From mark3575 at icloud.com Tue Jan 1 07:34:36 2019 From: mark3575 at icloud.com (Mark Wheeler) Date: Tue, 01 Jan 2019 12:34:36 GMT Subject: [Elecraft] =?utf-8?q?How_to_Isolate_2nd_Transceiver_in_two_Radio_?= =?utf-8?q?Base_Station_=28WU6R_/_Mark=29?= Message-ID: I see lots shack photos with two transceiver setups, especially two Elecraft K3S radios; how do you isolate the 2nd transceiver or SDR receiver (SDR Play, for example) so that you do not damage one transceiver while transmitting with the other?? I am assuming there is a way to use both radios at the same time. Can I safely use an antenna switch to switch between multiple transceivers using one antenna, or will I risk damaging the non-transmitting radio on the other side of the antenna switch? If there is a way to do this can anyone explain their setup? Thanks. Mark WU6R From dick at elecraft.com Tue Jan 1 07:46:41 2019 From: dick at elecraft.com (Dick Dievendorff) Date: Tue, 1 Jan 2019 04:46:41 -0800 Subject: [Elecraft] How to Isolate 2nd Transceiver in two Radio Base Station (WU6R / Mark) In-Reply-To: References: Message-ID: <9EB6F46B-3CBA-4EE3-9C7E-F0CF6D6FC14A@elecraft.com> I just googled ?bandpass filter so2r? and found a number of useful discussions and product references on this topic. 73 de Dick, K6KR > On Jan 1, 2019, at 04:34, Mark Wheeler via Elecraft wrote: > > > I see lots shack photos with two transceiver setups, especially two Elecraft K3S radios; how do you isolate the 2nd transceiver or SDR receiver (SDR Play, for example) so that you do not damage one transceiver while transmitting with the other? I am assuming there is a way to use both radios at the same time. > > Can I safely use an antenna switch to switch between multiple transceivers using one antenna, or will I risk damaging the non-transmitting radio on the other side of the antenna switch? > > If there is a way to do this can anyone explain their setup? > > Thanks. > > Mark > WU6R > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to dick at elecraft.com From roger at mulzer.de Tue Jan 1 09:45:46 2019 From: roger at mulzer.de (Roger) Date: Tue, 1 Jan 2019 15:45:46 +0100 Subject: [Elecraft] =?utf-8?q?How_to_Isolate_2nd_Transceiver_in_two_Radio_?= =?utf-8?q?Base_Station_=28WU6R_/_Mark=29?= Message-ID: <000101d4a1e0$ae100a20$0a301e60$@mulzer.de> Mark, it mainly depends on the "between port isolation" of the switch that you are going to use and the output power. There are some minor things to pay attention too like a poor quality (= poor shielded) interconnection cable. A 10 ft coax with poor shielding can pick up enough energy (especially under high power conditions) to put your receiver/s on risk. The higher the frequency and the higher the power you are running the higher will be the picked up power with all other variables constant. A typical laboratory grade switch will have an isolation of 100 dB or more. That?s how good the shielding of your cable has to be in order to take advantage of the switch?s isolation. A typical ham radio coax switch (DAIWA, Ameritron, MFJ, ALPHA Delta and alike) has about 60 dB at best and sometimes only 40 dB at 28 MHz. With one kilowatt on the port in use you have 100 mW (S 9+93!!) leaking thru to the unused ports. How much it is exactly depends on the length of the cable connected to the unused port and the termination (radio on or off etc.) If 2 radios to one antenna (or vice versa) is all you need then a two-way coax switch could provide some extra relief as you can terminate the unused port with 50 ohms and get another few dB of isolation. Multiport switches for 3,4,5 or more ports with isolation more than 80 dB are hard to get and EXPENSIVE! Roger/DL5RBW From mark3575 at icloud.com Tue Jan 1 10:24:43 2019 From: mark3575 at icloud.com (Mark Wheeler) Date: Tue, 01 Jan 2019 15:24:43 GMT Subject: [Elecraft] =?utf-8?q?How_to_Isolate_2nd_Transceiver_in_two_Radio_?= =?utf-8?q?Base_Station_=28WU6R_/_Mark=29?= Message-ID: Don, Thank you. Mark On Jan 01, 2019, at 10:14 AM, Don Wilhelm wrote: Mark, The assumption that "there is a way to use both radios at the same time" is the real base of the problem. A lot depends on the power level you are running - the problem get worse as the power is increased. If you can reduce the pickup on the antenna used by the non-transmitting radio, that will help a lot. A horizontal antenna on one and a vertical on the other radio may be sufficient at lower powers. Physical separation between the antennas will help as well, as well as good common mode chokes on the feedline - use one at each end of the feedline to choke off RF that is picked up on the non-transmit feedline. If you do not have to listen to the non-transmit radio(s) during transmitting, the problem becomes one of only protecting the other radio(s) front end. There are devices to accomplish that, or you could simplify things by adding a relay that is activated to short the input of the non-transmit radio when transmitting by the other radio. That relay (or relays) can be activated by the transmitting radio's amp keying output. As you can imagine, this can get complicated with only 2 radios, but you also mentioned the inclusion of SDRplay, which may mean more than 2 receivers, and the situation becomes even more complex. 73, Don W3FPR On 1/1/2019 7:34 AM, Mark Wheeler via Elecraft wrote: I see lots shack photos with two transceiver setups, especially two Elecraft K3S radios; how do you isolate the 2nd transceiver or SDR receiver (SDR Play, for example) so that you do not damage one transceiver while transmitting with the other?? I am assuming there is a way to use both radios at the same time. Can I safely use an antenna switch to switch between multiple transceivers using one antenna, or will I risk damaging the non-transmitting radio on the other side of the antenna switch? From mark3575 at icloud.com Tue Jan 1 10:25:12 2019 From: mark3575 at icloud.com (Mark Wheeler) Date: Tue, 01 Jan 2019 15:25:12 GMT Subject: [Elecraft] =?utf-8?q?How_to_Isolate_2nd_Transceiver_in_two_Radio_?= =?utf-8?q?Base_Station_=28WU6R_/_Mark=29?= Message-ID: <156ba9db-18c7-497e-83ad-82de67839a9a@me.com> Dick, Thanks. Mark On Jan 01, 2019, at 07:46 AM, Dick Dievendorff wrote: I just googled ?bandpass filter so2r? and found a number of useful discussions and product references on this topic. 73 de Dick, K6KR On Jan 1, 2019, at 04:34, Mark Wheeler via Elecraft wrote: I see lots shack photos with two transceiver setups, especially two Elecraft K3S radios; how do you isolate the 2nd transceiver or SDR receiver (SDR Play, for example) so that you do not damage one transceiver while transmitting with the other? I am assuming there is a way to use both radios at the same time. Can I safely use an antenna switch to switch between multiple transceivers using one antenna, or will I risk damaging the non-transmitting radio on the other side of the antenna switch? If there is a way to do this can anyone explain their setup? Thanks. Mark WU6R ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to dick at elecraft.com From backhoeken at yahoo.com Tue Jan 1 10:14:07 2019 From: backhoeken at yahoo.com (Ken B) Date: Tue, 1 Jan 2019 15:14:07 +0000 (UTC) Subject: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable In-Reply-To: References: <1545953928645-0.post@n2.nabble.com> <1545969652283-0.post@n2.nabble.com> <1344707825.11000086.1545970485653@mail.yahoo.com> <034ef04f-279c-dde7-2693-c2070069f7da@embarqmail.com> <1460664980.6695972.1546139625375@mail.yahoo.com> <60ec3635-37a4-69ee-baee-cee364e44f35@embarqmail.com> <1756441410.11829241.1546168363203@mail.yahoo.com> <0daf25f3-1b0f-b579-afb6-c84bd7df188c@embarqmail.com> <892485748.11993683.1546206904612@mail.yahoo.com> <1DB7A12F-5144-4AC8-BF36-D114020F99AF@me.com> <750452451.11973383.1546208558451@mail.yahoo.com> <60B6913C-20D6-4961-9A28-C00068A490C1@me.com> <1559098418.12018570.1546215230479@mail.yahoo.com> <973FA780-872D-4DB6-905C-BE1AA68B3A66@me.com> <688759338.12042193.1546223413599@mail.yahoo.com> Message-ID: <1437136692.12573999.1546355647342@mail.yahoo.com> Thank you Jack Will do it all today. Sunday after church and evening we preparing for the charity meal. We served?581 people and was to wiped to do anything yesterday. Thank you Ken KC1ICN From: Jack Brindle To: Ken B Cc: "elecraft at mailman.qth.net" Sent: Sunday, December 30, 2018 9:53 PM Subject: Re: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable Let?s take a step back and make sure the KAT500 and KPA500 work properly with RF sensing for a tune. Unplug the mini-phone plug from the KAT500. This will leave the KAT powered from the 7600, but requesting a tune from the 7600 won?t cause the KAT to respond. Next key the radio and make sure everything works properly. After that, change bands on the radio and re-key. Both the Kat and KPA will sense the new band and both should change. The KAT will further require a tune and should break the key line causing the KPA to drop out of transmit.? Try this test and let me know what happens. Oh, and before I forget, there is actually no soldering involved in assembling either the KPA500 or the KAT500. They are both no-solder kits. But there are a lot of mechanical tasks such as screwing in small screws and tightening nuts. Having just assembled one of each of these, I can?t say I blame you for buying it factory-built. 73!Jack, W6FB On Dec 30, 2018, at 6:30 PM, Ken B wrote: Thank you - I followed Fig 3 on page 10 which is specific to ICOM. Yes all cables ohm'd out with no shorts ? From: Jack Brindle To: Ken B Cc: "elecraft at mailman.qth.net" Sent: Sunday, December 30, 2018 8:28 PM Subject: Re: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable Great! Thanks for the detail. Table 2 on page 8 of the KAT500 manual should have given you the exact connections you needed to make for the Molex to KAT500 cable. Note that the plug o the KAt500 end is stereo with tip, ring and sleeve. Please recheck these connections to make sure that pin 4 of the Molex does indeed go to the sleeve of the mini-phone plug. It would be best to ohm out the cable to make sure the signals go to the right places and there are no shorts between pins. Table 3 on that same page shows the Key-line connections, which I suspect are correct at the point. In any case be sure to check that cable as well. 73!Jack, W6FB On Dec 30, 2018, at 4:13 PM, Ken B wrote: Good evening??The Icom IC-7600 KAT500, and KPA500 are each?grounded to a single terminal strip with a #10 cable directly to a ground rod 15 ft away. The rod is?12 ft deep.?Both the KAP and KTA were factory built as my soldering skills have diminished since the Army training. The IC7600 - In the back of the?7600 is a 4 conductor molex connector. The Icom made cable?splits into 2 connections on the KAT, the first is plugged into?DC power, and the second is plugged into the Tuner connection?? - In the back of the 7600 is also a 7 conductor DIM connection (Acc2).?I made a cable to connect pin 3?to the KAT PTT RLY The KAT??- Other than mentioned above ant1 goes out to the antenna- XMTR is connected via a 2 ft piece of LMR400 to the output of the KAP- The unlabeled connector above the PTT RLY goes to the PA Key of the KAP The KAP - Other than what is mentioned above the only other connection is a piece of LMR400 from Ant1 on the 7600 to input on the KAP. From: Jack Brindle To: "backhoeken at yahoo.com" Cc: "elecraft at mailman.qth.net" Sent: Sunday, December 30, 2018 5:31 PM Subject: Re: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable Yeah, but we really want to get the problem solved so you can enjoy your KPA500 and KAT500 as much as we enjoy ours.That connection list will be most helpful in this effort. My thinking on the ground issue is that the power-plug ground is completing a circuit that should not exist and thus disruptingoperations on band change. The question would be what is connected to ground that should not be, and where?Are the KPA and KATs kits or did they come assembled? 73!Jack, W6FB On Dec 30, 2018, at 2:22 PM, Ken B wrote: Please allow me to clairify.? ?Everyone deserves time off.? I work 60 to 70 hrs per week and appricate the down time? Sent from Yahoo Mail on Android On Sun, Dec 30, 2018 at 5:07 PM, Jack Brindle wrote: The folks in Watsonville are taking a well deserved rest, but some of us are still around. This sounds a lot like a grounding issue in your setup with ground being completed through the wall power ground pin. Tell me exactly all of the cables/connections going to the KPA500 (and from where). While you are at it you might as well do the same for the KAT500. I?ll try to decipher what is going on from this information and hopefully get a good solution for you quickly. 73! Jack, W6FB Elecraft Engineering > On Dec 30, 2018, at 1:55 PM, Ken B via Elecraft wrote: > > Thanks for the suggestion > Sorry for the delay the wife and I went out. The only way I can get it all to work properly is to:- Remove AC power from the AMP (simply turning it off dowes not work) - On the radio (icom 7600) select the band (ensure auto tuner on Radio is off) - On Radio select AM and depress PTT - While holding PTT, hit the tune button on the KAT500 - Let if get to 1.2 and stop - Let go PTT and select SSB on Radio- Plug in AC power to KPA and power on - On KPA select the proper band- On the KPA select operate from Standby? > All works until I change bands then it is start from the top Cleared all memory > Wish Elecraft was open on Monday. > ThanksKen > >? ? ? From: Don Wilhelm > To: "backhoeken at yahoo.com" ; "elecraft at mailman.qth.net" > Sent: Sunday, December 30, 2018 8:39 AM > Subject: Re: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable > > Ken, > > If that Send cable is the only one you have connected between your Icom > and the KAT500, you need to feed a bit of RF to initiate a TUNE > > The KAT500 will first look for a saved L/C combination for that antenna > and frequency and will switch to that rather than doing a TUNE.? > Secondly, it will compute the SWR and if it is below 1.5, it will go > into bypass - no tuning is necessary. > > Is it possible that either one of those conditions exist? > > 73, > Don W3FPR > > On 12/30/2018 6:12 AM, Ken B wrote: >> Yes? from the 7600 accessory 1 pin 3 to the kat500 >> >> Sent from Yahoo Mail on Android >> >> >>? ? On Sun, Dec 30, 2018 at 4:52 AM, Don Wilhelm >>? ? wrote: >>? ? Ken, >> >>? ? Do you have the cable wired first to the KAT500 and then on to the >>? ? KPA500? >>? ? The KAT500 must interrupt the keying of the KPA500 when it needs >>? ? to tune. >> >>? ? 73, >>? ? Don W3FPR >> >>? ? On 12/29/2018 10:13 PM, Ken B wrote: >>? ? > Thank you Don. >>? ? > The pin 3 (send) did the trick perfectly. Now it works at 300 to >>? ? 400 >>? ? > watts out with 20 in. The problem i have now is when i switch bands >>? ? > the kat will not tune unless i remove all AC power from the amp. >>? ? > >>? ? > >>? ? > Sent from Yahoo Mail on Android >>? ? > >>? ? >? ? > >> >> >>? ? > >>? ? >? ? On Thu, Dec 27, 2018 at 11:36 PM, Don Wilhelm >>? ? >? ? > wrote: >>? ? >? ? Ken, >>? ? > >>? ? >? ? Look at your Icom 7600 documentation.? I believe the >>? ? 'keyword' may be >>? ? >? ? "Send" or Keyout or something of that nature (PTT should be an >>? ? >? ? input to >>? ? >? ? the transceiver, not an output, but some manufacturers mix >>? ? them up >>? ? >? ? causing confusion - check the documentation). >>? ? >? ? Connect that output from your transceiver first to the KAT500 >>? ? AMP KEY >>? ? >? ? connector and from the other KAT500 AMP KEY connector to the >>? ? KPA500. >>? ? >? ? That allows the KAT500 to disable the amplifier keying if the >>? ? KAT500 >>? ? >? ? needs to tune. >>? ? > >>? ? >? ? You should then be "good to go" with the basic cabling. When >>? ? you get >>? ? >? ? the proper cable, it will integrate better with your Icom, >>? ? but the >>? ? >? ? basic >>? ? >? ? cabling will get you on the air with your new toys. >>? ? > >>? ? >? ? 73, >>? ? >? ? Don W3FPR >>? ? > >>? ? >? ? On 12/27/2018 11:14 PM, Ken B via Elecraft wrote: >>? ? >? ? > Just received my the kap500 and found out it was missing the >>? ? >? ? accessory cable which goes from the icom 7600 to the kat500. >>? ? >? ? Elecraft is sending one but it might take a week. In the mean >>? ? time >>? ? >? ? does anyone have the accessory pin outs to rca plug so i can make >>? ? >? ? one and use my new toy. >>? ? >? ? > Thank youKenKc1icn >>? ? > >> > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jackbrindle at me.com From donwilh at embarqmail.com Tue Jan 1 10:14:28 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Tue, 1 Jan 2019 10:14:28 -0500 Subject: [Elecraft] How to Isolate 2nd Transceiver in two Radio Base Station (WU6R / Mark) In-Reply-To: References: Message-ID: <68aac708-425b-4663-10e8-11379fff7b24@embarqmail.com> Mark, The assumption that "there is a way to use both radios at the same time" is the real base of the problem. A lot depends on the power level you are running - the problem get worse as the power is increased. If you can reduce the pickup on the antenna used by the non-transmitting radio, that will help a lot. A horizontal antenna on one and a vertical on the other radio may be sufficient at lower powers. Physical separation between the antennas will help as well, as well as good common mode chokes on the feedline - use one at each end of the feedline to choke off RF that is picked up on the non-transmit feedline. If you do not have to listen to the non-transmit radio(s) during transmitting, the problem becomes one of only protecting the other radio(s) front end. There are devices to accomplish that, or you could simplify things by adding a relay that is activated to short the input of the non-transmit radio when transmitting by the other radio. That relay (or relays) can be activated by the transmitting radio's amp keying output. As you can imagine, this can get complicated with only 2 radios, but you also mentioned the inclusion of SDRplay, which may mean more than 2 receivers, and the situation becomes even more complex. 73, Don W3FPR On 1/1/2019 7:34 AM, Mark Wheeler via Elecraft wrote: > > I see lots shack photos with two transceiver setups, especially two > Elecraft K3S radios; how do you isolate the 2nd transceiver or SDR > receiver (SDR Play, for example) so that you do not damage one > transceiver while transmitting with the other?? I am assuming there is a > way to use both radios at the same time. > > Can I safely use an antenna switch to switch between multiple > transceivers using one antenna, or will I risk damaging the > non-transmitting radio on the other side of the antenna switch? From backhoeken at yahoo.com Tue Jan 1 10:45:10 2019 From: backhoeken at yahoo.com (Ken B) Date: Tue, 1 Jan 2019 15:45:10 +0000 (UTC) Subject: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable In-Reply-To: <973FA780-872D-4DB6-905C-BE1AA68B3A66@me.com> References: <1545953928645-0.post@n2.nabble.com> <1545969652283-0.post@n2.nabble.com> <1344707825.11000086.1545970485653@mail.yahoo.com> <034ef04f-279c-dde7-2693-c2070069f7da@embarqmail.com> <1460664980.6695972.1546139625375@mail.yahoo.com> <60ec3635-37a4-69ee-baee-cee364e44f35@embarqmail.com> <1756441410.11829241.1546168363203@mail.yahoo.com> <0daf25f3-1b0f-b579-afb6-c84bd7df188c@embarqmail.com> <892485748.11993683.1546206904612@mail.yahoo.com> <1DB7A12F-5144-4AC8-BF36-D114020F99AF@me.com> <750452451.11973383.1546208558451@mail.yahoo.com> <60B6913C-20D6-4961-9A28-C00068A490C1@me.com> <1559098418.12018570.1546215230479@mail.yahoo.com> <973FA780-872D-4DB6-905C-BE1AA68B3A66@me.com> Message-ID: <1895252491.12559417.1546357510230@mail.yahoo.com> Good morning Jack To make things easier to read replies prefaced the KB>>> Table 2 on page 8 of the KAT500 manual should have given you the exact connections you needed to make for the Molex to KAT500 cable. Note that the plug o the KAt500 end is stereo with tip, ring and sleeve. Please recheck these connections to make sure that pin 4 of the Molex does indeed go to the sleeve of the mini-phone plug. It would be best to ohm out the cable to make sure the signals go to the right places and there are no shorts between pins.KB>>> Ohm'd out each connector and confirm operation Table 3 on that same page shows the Key-line connections, which I suspect are correct at the point. In any case be sure to check that cable as well.KB>>> Confirmed and Ohm'd each as well. KB>>> One note - Took the KPA entirely out of the mix and all works as it should with the KAT working properly when I change bands Thank you Ken From: Jack Brindle To: Ken B Cc: "elecraft at mailman.qth.net" Sent: Sunday, December 30, 2018 8:28 PM Subject: Re: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable Great! Thanks for the detail. Table 2 on page 8 of the KAT500 manual should have given you the exact connections you needed to make for the Molex to KAT500 cable. Note that the plug o the KAt500 end is stereo with tip, ring and sleeve. Please recheck these connections to make sure that pin 4 of the Molex does indeed go to the sleeve of the mini-phone plug. It would be best to ohm out the cable to make sure the signals go to the right places and there are no shorts between pins. Table 3 on that same page shows the Key-line connections, which I suspect are correct at the point. In any case be sure to check that cable as well. 73!Jack, W6FB On Dec 30, 2018, at 4:13 PM, Ken B wrote: Good evening??The Icom IC-7600 KAT500, and KPA500 are each?grounded to a single terminal strip with a #10 cable directly to a ground rod 15 ft away. The rod is?12 ft deep.?Both the KAP and KTA were factory built as my soldering skills have diminished since the Army training. The IC7600 - In the back of the?7600 is a 4 conductor molex connector. The Icom made cable?splits into 2 connections on the KAT, the first is plugged into?DC power, and the second is plugged into the Tuner connection?? - In the back of the 7600 is also a 7 conductor DIM connection (Acc2).?I made a cable to connect pin 3?to the KAT PTT RLY The KAT??- Other than mentioned above ant1 goes out to the antenna- XMTR is connected via a 2 ft piece of LMR400 to the output of the KAP- The unlabeled connector above the PTT RLY goes to the PA Key of the KAP The KAP - Other than what is mentioned above the only other connection is a piece of LMR400 from Ant1 on the 7600 to input on the KAP. From: Jack Brindle To: "backhoeken at yahoo.com" Cc: "elecraft at mailman.qth.net" Sent: Sunday, December 30, 2018 5:31 PM Subject: Re: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable Yeah, but we really want to get the problem solved so you can enjoy your KPA500 and KAT500 as much as we enjoy ours.That connection list will be most helpful in this effort. My thinking on the ground issue is that the power-plug ground is completing a circuit that should not exist and thus disruptingoperations on band change. The question would be what is connected to ground that should not be, and where?Are the KPA and KATs kits or did they come assembled? 73!Jack, W6FB On Dec 30, 2018, at 2:22 PM, Ken B wrote: Please allow me to clairify.? ?Everyone deserves time off.? I work 60 to 70 hrs per week and appricate the down time? Sent from Yahoo Mail on Android On Sun, Dec 30, 2018 at 5:07 PM, Jack Brindle wrote: The folks in Watsonville are taking a well deserved rest, but some of us are still around. This sounds a lot like a grounding issue in your setup with ground being completed through the wall power ground pin. Tell me exactly all of the cables/connections going to the KPA500 (and from where). While you are at it you might as well do the same for the KAT500. I?ll try to decipher what is going on from this information and hopefully get a good solution for you quickly. 73! Jack, W6FB Elecraft Engineering > On Dec 30, 2018, at 1:55 PM, Ken B via Elecraft wrote: > > Thanks for the suggestion > Sorry for the delay the wife and I went out. The only way I can get it all to work properly is to:- Remove AC power from the AMP (simply turning it off dowes not work) - On the radio (icom 7600) select the band (ensure auto tuner on Radio is off) - On Radio select AM and depress PTT - While holding PTT, hit the tune button on the KAT500 - Let if get to 1.2 and stop - Let go PTT and select SSB on Radio- Plug in AC power to KPA and power on - On KPA select the proper band- On the KPA select operate from Standby? > All works until I change bands then it is start from the top Cleared all memory > Wish Elecraft was open on Monday. > ThanksKen > >? ? ? From: Don Wilhelm > To: "backhoeken at yahoo.com" ; "elecraft at mailman.qth.net" > Sent: Sunday, December 30, 2018 8:39 AM > Subject: Re: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable > > Ken, > > If that Send cable is the only one you have connected between your Icom > and the KAT500, you need to feed a bit of RF to initiate a TUNE > > The KAT500 will first look for a saved L/C combination for that antenna > and frequency and will switch to that rather than doing a TUNE.? > Secondly, it will compute the SWR and if it is below 1.5, it will go > into bypass - no tuning is necessary. > > Is it possible that either one of those conditions exist? > > 73, > Don W3FPR > > On 12/30/2018 6:12 AM, Ken B wrote: >> Yes? from the 7600 accessory 1 pin 3 to the kat500 >> >> Sent from Yahoo Mail on Android >> >> >>? ? On Sun, Dec 30, 2018 at 4:52 AM, Don Wilhelm >>? ? wrote: >>? ? Ken, >> >>? ? Do you have the cable wired first to the KAT500 and then on to the >>? ? KPA500? >>? ? The KAT500 must interrupt the keying of the KPA500 when it needs >>? ? to tune. >> >>? ? 73, >>? ? Don W3FPR >> >>? ? On 12/29/2018 10:13 PM, Ken B wrote: >>? ? > Thank you Don. >>? ? > The pin 3 (send) did the trick perfectly. Now it works at 300 to >>? ? 400 >>? ? > watts out with 20 in. The problem i have now is when i switch bands >>? ? > the kat will not tune unless i remove all AC power from the amp. >>? ? > >>? ? > >>? ? > Sent from Yahoo Mail on Android >>? ? > >>? ? >? ? > >> >> >>? ? > >>? ? >? ? On Thu, Dec 27, 2018 at 11:36 PM, Don Wilhelm >>? ? >? ? > wrote: >>? ? >? ? Ken, >>? ? > >>? ? >? ? Look at your Icom 7600 documentation.? I believe the >>? ? 'keyword' may be >>? ? >? ? "Send" or Keyout or something of that nature (PTT should be an >>? ? >? ? input to >>? ? >? ? the transceiver, not an output, but some manufacturers mix >>? ? them up >>? ? >? ? causing confusion - check the documentation). >>? ? >? ? Connect that output from your transceiver first to the KAT500 >>? ? AMP KEY >>? ? >? ? connector and from the other KAT500 AMP KEY connector to the >>? ? KPA500. >>? ? >? ? That allows the KAT500 to disable the amplifier keying if the >>? ? KAT500 >>? ? >? ? needs to tune. >>? ? > >>? ? >? ? You should then be "good to go" with the basic cabling. When >>? ? you get >>? ? >? ? the proper cable, it will integrate better with your Icom, >>? ? but the >>? ? >? ? basic >>? ? >? ? cabling will get you on the air with your new toys. >>? ? > >>? ? >? ? 73, >>? ? >? ? Don W3FPR >>? ? > >>? ? >? ? On 12/27/2018 11:14 PM, Ken B via Elecraft wrote: >>? ? >? ? > Just received my the kap500 and found out it was missing the >>? ? >? ? accessory cable which goes from the icom 7600 to the kat500. >>? ? >? ? Elecraft is sending one but it might take a week. In the mean >>? ? time >>? ? >? ? does anyone have the accessory pin outs to rca plug so i can make >>? ? >? ? one and use my new toy. >>? ? >? ? > Thank youKenKc1icn >>? ? > >> > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jackbrindle at me.com From jasimmons at pinewooddata.com Tue Jan 1 12:17:47 2019 From: jasimmons at pinewooddata.com (John Simmons) Date: Tue, 1 Jan 2019 11:17:47 -0600 Subject: [Elecraft] Watsonville CA Message-ID: While surfing the Internet looking at historical info on ham radio, Sideband Engineers became Linear Systems making the SB36 transceiver. Guess what? Linear Systems was at 220 Airport boulevard, Watsonville, CA! Coincidence? -John NI0K From john at kk9a.com Tue Jan 1 12:27:41 2019 From: john at kk9a.com (john at kk9a.com) Date: Tue, 1 Jan 2019 12:27:41 -0500 Subject: [Elecraft] How to Isolate 2nd Transceiver in two Radio Base Station (WU6R / Mark) Message-ID: <002a01d4a1f7$4d50c500$e7f24f00$@com> Two transceivers is a typical contesting setup. I do not believe that you are contester so it would probably have little value to you. Typically a two radio station on operator setup (SO2R) has one transceiver on one band and the other on a different band with filters to protect the receivers. With super human operating skills very high run rates are possible: https://www.youtube.com/watch?v=bIW1Z1uFbRw&t=259s John KK9A Mark Wheeler mark3575 at icloud.com I see lots shack photos with two transceiver setups, especially two Elecraft K3S radios; how do you isolate the 2nd transceiver or SDR receiver (SDR Play, for example) so that you do not damage one transceiver while transmitting with the other? I am assuming there is a way to use both radios at the same time. Can I safely use an antenna switch to switch between multiple transceivers using one antenna, or will I risk damaging the non-transmitting radio on the other side of the antenna switch? If there is a way to do this can anyone explain their setup? Thanks. Mark WU6R From rmcgraw at blomand.net Tue Jan 1 13:22:35 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Tue, 1 Jan 2019 12:22:35 -0600 Subject: [Elecraft] How to Isolate 2nd Transceiver in two Radio Base Station (WU6R / Mark) In-Reply-To: <002a01d4a1f7$4d50c500$e7f24f00$@com> References: <002a01d4a1f7$4d50c500$e7f24f00$@com> Message-ID: Think Field Day where it is normal to run several transceivers at the same time. Antenna separation and orientation is a key factor plus good quality band pass filters for each radio. Bob, K4TAX Sent from my iPhone > On Jan 1, 2019, at 11:27 AM, wrote: > > Two transceivers is a typical contesting setup. I do not believe that you > are contester so it would probably have little value to you. Typically a two > radio station on operator setup (SO2R) has one transceiver on one band and > the other on a different band with filters to protect the receivers. With > super human operating skills very high run rates are possible: > https://www.youtube.com/watch?v=bIW1Z1uFbRw&t=259s > > John KK9A > > > > Mark Wheeler mark3575 at icloud.com > > I see lots shack photos with two transceiver setups, especially two Elecraft > K3S radios; how do you isolate the 2nd transceiver or SDR receiver (SDR > Play, for example) so that you do not damage one transceiver while > transmitting with the other? I am assuming there is a way to use both > radios at the same time. > > Can I safely use an antenna switch to switch between multiple transceivers > using one antenna, or will I risk damaging the non-transmitting radio on the > other side of the antenna switch? > > If there is a way to do this can anyone explain their setup? > > Thanks. > > Mark > WU6R > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From w6png at yahoo.com Tue Jan 1 13:23:36 2019 From: w6png at yahoo.com (Paul Gacek) Date: Tue, 1 Jan 2019 10:23:36 -0800 Subject: [Elecraft] How to Isolate 2nd Transceiver in two Radio Base Station (WU6R / Mark) In-Reply-To: <002a01d4a1f7$4d50c500$e7f24f00$@com> References: <002a01d4a1f7$4d50c500$e7f24f00$@com> Message-ID: <8E3EEE36-1D25-4BC7-9015-A900980F6EAC@yahoo.com> Mark The MFJ 1708-SDR will isolate a second rig/recover (designed more for SDR devices like the SDPplay) while the main rig transmits. https://www.hamradio.com/detail.cfm?pid=H0-016017 This is not a classic SO2R setup. Paul W6PNG/M0SN > On Jan 1, 2019, at 9:27 AM, wrote: > > Two transceivers is a typical contesting setup. I do not believe that you > are contester so it would probably have little value to you. Typically a two > radio station on operator setup (SO2R) has one transceiver on one band and > the other on a different band with filters to protect the receivers. With > super human operating skills very high run rates are possible: > https://www.youtube.com/watch?v=bIW1Z1uFbRw&t=259s > > John KK9A > > > > Mark Wheeler mark3575 at icloud.com > > I see lots shack photos with two transceiver setups, especially two Elecraft > K3S radios; how do you isolate the 2nd transceiver or SDR receiver (SDR > Play, for example) so that you do not damage one transceiver while > transmitting with the other? I am assuming there is a way to use both > radios at the same time. > > Can I safely use an antenna switch to switch between multiple transceivers > using one antenna, or will I risk damaging the non-transmitting radio on the > other side of the antenna switch? > > If there is a way to do this can anyone explain their setup? > > Thanks. > > Mark > WU6R > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w6png at yahoo.com From backhoeken at yahoo.com Tue Jan 1 12:53:47 2019 From: backhoeken at yahoo.com (Ken B) Date: Tue, 1 Jan 2019 17:53:47 +0000 (UTC) Subject: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable In-Reply-To: References: <1545953928645-0.post@n2.nabble.com> <1545969652283-0.post@n2.nabble.com> <1344707825.11000086.1545970485653@mail.yahoo.com> <034ef04f-279c-dde7-2693-c2070069f7da@embarqmail.com> <1460664980.6695972.1546139625375@mail.yahoo.com> <60ec3635-37a4-69ee-baee-cee364e44f35@embarqmail.com> <1756441410.11829241.1546168363203@mail.yahoo.com> <0daf25f3-1b0f-b579-afb6-c84bd7df188c@embarqmail.com> <892485748.11993683.1546206904612@mail.yahoo.com> <1DB7A12F-5144-4AC8-BF36-D114020F99AF@me.com> <750452451.11973383.1546208558451@mail.yahoo.com> <60B6913C-20D6-4961-9A28-C00068A490C1@me.com> <1559098418.12018570.1546215230479@mail.yahoo.com> <973FA780-872D-4DB6-905C-BE1AA68B3A66@me.com> <688759338.12042193.1546223413599@mail.yahoo.com> Message-ID: <1180772415.12608822.1546365227763@mail.yahoo.com> To make it easier to read replies prefaced with KB>>>? ?Unplug the mini-phone plug from the KAT500. This will leave the KAT powered from the 7600, but requesting a tune from the 7600 won?t cause the KAT to respond. KB>>> Worked as planned Next key the radio and make sure everything works properly. KB>>> Worked as planned? After that, change bands on the radio and re-key. Both the Kat and KPA will sense the new band and both should change. KB>>> Did not work as planned, KPA did not sense me changing from 80 mtr to 20 The KAT will further require a tune and should break the key line causing the KPA to drop out of transmit.?KB>>> Did not occur - kept output of 480 Watts From: Jack Brindle To: Ken B Cc: "elecraft at mailman.qth.net" Sent: Sunday, December 30, 2018 9:53 PM Subject: Re: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable Let?s take a step back and make sure the KAT500 and KPA500 work properly with RF sensing for a tune. Unplug the mini-phone plug from the KAT500. This will leave the KAT powered from the 7600, but requesting a tune from the 7600 won?t cause the KAT to respond. Next key the radio and make sure everything works properly. After that, change bands on the radio and re-key. Both the Kat and KPA will sense the new band and both should change. The KAT will further require a tune and should break the key line causing the KPA to drop out of transmit.? Try this test and let me know what happens. Oh, and before I forget, there is actually no soldering involved in assembling either the KPA500 or the KAT500. They are both no-solder kits. But there are a lot of mechanical tasks such as screwing in small screws and tightening nuts. Having just assembled one of each of these, I can?t say I blame you for buying it factory-built. 73!Jack, W6FB On Dec 30, 2018, at 6:30 PM, Ken B wrote: Thank you - I followed Fig 3 on page 10 which is specific to ICOM. Yes all cables ohm'd out with no shorts ? From: Jack Brindle To: Ken B Cc: "elecraft at mailman.qth.net" Sent: Sunday, December 30, 2018 8:28 PM Subject: Re: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable Great! Thanks for the detail. Table 2 on page 8 of the KAT500 manual should have given you the exact connections you needed to make for the Molex to KAT500 cable. Note that the plug o the KAt500 end is stereo with tip, ring and sleeve. Please recheck these connections to make sure that pin 4 of the Molex does indeed go to the sleeve of the mini-phone plug. It would be best to ohm out the cable to make sure the signals go to the right places and there are no shorts between pins. Table 3 on that same page shows the Key-line connections, which I suspect are correct at the point. In any case be sure to check that cable as well. 73!Jack, W6FB On Dec 30, 2018, at 4:13 PM, Ken B wrote: Good evening??The Icom IC-7600 KAT500, and KPA500 are each?grounded to a single terminal strip with a #10 cable directly to a ground rod 15 ft away. The rod is?12 ft deep.?Both the KAP and KTA were factory built as my soldering skills have diminished since the Army training. The IC7600 - In the back of the?7600 is a 4 conductor molex connector. The Icom made cable?splits into 2 connections on the KAT, the first is plugged into?DC power, and the second is plugged into the Tuner connection?? - In the back of the 7600 is also a 7 conductor DIM connection (Acc2).?I made a cable to connect pin 3?to the KAT PTT RLY The KAT??- Other than mentioned above ant1 goes out to the antenna- XMTR is connected via a 2 ft piece of LMR400 to the output of the KAP- The unlabeled connector above the PTT RLY goes to the PA Key of the KAP The KAP - Other than what is mentioned above the only other connection is a piece of LMR400 from Ant1 on the 7600 to input on the KAP. From: Jack Brindle To: "backhoeken at yahoo.com" Cc: "elecraft at mailman.qth.net" Sent: Sunday, December 30, 2018 5:31 PM Subject: Re: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable Yeah, but we really want to get the problem solved so you can enjoy your KPA500 and KAT500 as much as we enjoy ours.That connection list will be most helpful in this effort. My thinking on the ground issue is that the power-plug ground is completing a circuit that should not exist and thus disruptingoperations on band change. The question would be what is connected to ground that should not be, and where?Are the KPA and KATs kits or did they come assembled? 73!Jack, W6FB On Dec 30, 2018, at 2:22 PM, Ken B wrote: Please allow me to clairify.? ?Everyone deserves time off.? I work 60 to 70 hrs per week and appricate the down time? Sent from Yahoo Mail on Android On Sun, Dec 30, 2018 at 5:07 PM, Jack Brindle wrote: The folks in Watsonville are taking a well deserved rest, but some of us are still around. This sounds a lot like a grounding issue in your setup with ground being completed through the wall power ground pin. Tell me exactly all of the cables/connections going to the KPA500 (and from where). While you are at it you might as well do the same for the KAT500. I?ll try to decipher what is going on from this information and hopefully get a good solution for you quickly. 73! Jack, W6FB Elecraft Engineering > On Dec 30, 2018, at 1:55 PM, Ken B via Elecraft wrote: > > Thanks for the suggestion > Sorry for the delay the wife and I went out. The only way I can get it all to work properly is to:- Remove AC power from the AMP (simply turning it off dowes not work) - On the radio (icom 7600) select the band (ensure auto tuner on Radio is off) - On Radio select AM and depress PTT - While holding PTT, hit the tune button on the KAT500 - Let if get to 1.2 and stop - Let go PTT and select SSB on Radio- Plug in AC power to KPA and power on - On KPA select the proper band- On the KPA select operate from Standby? > All works until I change bands then it is start from the top Cleared all memory > Wish Elecraft was open on Monday. > ThanksKen > >? ? ? From: Don Wilhelm > To: "backhoeken at yahoo.com" ; "elecraft at mailman.qth.net" > Sent: Sunday, December 30, 2018 8:39 AM > Subject: Re: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable > > Ken, > > If that Send cable is the only one you have connected between your Icom > and the KAT500, you need to feed a bit of RF to initiate a TUNE > > The KAT500 will first look for a saved L/C combination for that antenna > and frequency and will switch to that rather than doing a TUNE.? > Secondly, it will compute the SWR and if it is below 1.5, it will go > into bypass - no tuning is necessary. > > Is it possible that either one of those conditions exist? > > 73, > Don W3FPR > > On 12/30/2018 6:12 AM, Ken B wrote: >> Yes? from the 7600 accessory 1 pin 3 to the kat500 >> >> Sent from Yahoo Mail on Android >> >> >>? ? On Sun, Dec 30, 2018 at 4:52 AM, Don Wilhelm >>? ? wrote: >>? ? Ken, >> >>? ? Do you have the cable wired first to the KAT500 and then on to the >>? ? KPA500? >>? ? The KAT500 must interrupt the keying of the KPA500 when it needs >>? ? to tune. >> >>? ? 73, >>? ? Don W3FPR >> >>? ? On 12/29/2018 10:13 PM, Ken B wrote: >>? ? > Thank you Don. >>? ? > The pin 3 (send) did the trick perfectly. Now it works at 300 to >>? ? 400 >>? ? > watts out with 20 in. The problem i have now is when i switch bands >>? ? > the kat will not tune unless i remove all AC power from the amp. >>? ? > >>? ? > >>? ? > Sent from Yahoo Mail on Android >>? ? > >>? ? >? ? > >> >> >>? ? > >>? ? >? ? On Thu, Dec 27, 2018 at 11:36 PM, Don Wilhelm >>? ? >? ? > wrote: >>? ? >? ? Ken, >>? ? > >>? ? >? ? Look at your Icom 7600 documentation.? I believe the >>? ? 'keyword' may be >>? ? >? ? "Send" or Keyout or something of that nature (PTT should be an >>? ? >? ? input to >>? ? >? ? the transceiver, not an output, but some manufacturers mix >>? ? them up >>? ? >? ? causing confusion - check the documentation). >>? ? >? ? Connect that output from your transceiver first to the KAT500 >>? ? AMP KEY >>? ? >? ? connector and from the other KAT500 AMP KEY connector to the >>? ? KPA500. >>? ? >? ? That allows the KAT500 to disable the amplifier keying if the >>? ? KAT500 >>? ? >? ? needs to tune. >>? ? > >>? ? >? ? You should then be "good to go" with the basic cabling. When >>? ? you get >>? ? >? ? the proper cable, it will integrate better with your Icom, >>? ? but the >>? ? >? ? basic >>? ? >? ? cabling will get you on the air with your new toys. >>? ? > >>? ? >? ? 73, >>? ? >? ? Don W3FPR >>? ? > >>? ? >? ? On 12/27/2018 11:14 PM, Ken B via Elecraft wrote: >>? ? >? ? > Just received my the kap500 and found out it was missing the >>? ? >? ? accessory cable which goes from the icom 7600 to the kat500. >>? ? >? ? Elecraft is sending one but it might take a week. In the mean >>? ? time >>? ? >? ? does anyone have the accessory pin outs to rca plug so i can make >>? ? >? ? one and use my new toy. >>? ? >? ? > Thank youKenKc1icn >>? ? > >> > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jackbrindle at me.com From bobk8rl at aol.com Tue Jan 1 14:12:42 2019 From: bobk8rl at aol.com (bobk8rl at aol.com) Date: Tue, 1 Jan 2019 19:12:42 +0000 (UTC) Subject: [Elecraft] [FS] KX3 References: <1474444514.11474760.1546369962758.ref@mail.yahoo.com> Message-ID: <1474444514.11474760.1546369962758@mail.yahoo.com> ?For sale KX3-F (SN 5520) in very good condition with the following: KXFL3, KXAT3, KXBC3, KX3-2M-AT, KXPD3, MH3, XG50 (assembled), KXUSB cable, KX3-PCKT accessory cable set, PAE-Kx31 heatsink, SideKX panels and cover, orange Pelican 1200 padded case, The Nifty! Mini-Manual for KX3 Plus Options, The Elecraft KX3 book (marked) by Fred Cady - KE7X, power cable 18AWG with right angle plug (E850524).?Payment via PayPal.? CONUS only.? $1400 shipped.?If interested, please contact me offline via email of BobK8RL at AOL.?BobK8RL? From bobk8rl at aol.com Tue Jan 1 14:44:38 2019 From: bobk8rl at aol.com (bobk8rl at aol.com) Date: Tue, 1 Jan 2019 19:44:38 +0000 (UTC) Subject: [Elecraft] [FS] PX3 References: <779273446.11508443.1546371878712.ref@mail.yahoo.com> Message-ID: <779273446.11508443.1546371878712@mail.yahoo.com> ?For sale PX3-F (SN 0920) in very good condition with Rev A6 manual, KXUSB cable, KX3-PX3 cable set, SideKX panels and cover, and coaxial DC power Y-cable.? Payment via PayPal.? CONUS only.? $400 shipped.? If interested, please contact me offline via email of BobK8RL at AOL.? From mark3575 at icloud.com Tue Jan 1 14:56:31 2019 From: mark3575 at icloud.com (Mark Wheeler) Date: Tue, 1 Jan 2019 14:56:31 -0500 Subject: [Elecraft] How to Isolate 2nd Transceiver in two Radio Base Station (WU6R / Mark) In-Reply-To: References: <002a01d4a1f7$4d50c500$e7f24f00$@com> Message-ID: <501DFE27-EFE3-4C07-8EBD-977952833361@icloud.com> Thanks Bob. Mark > On Jan 1, 2019, at 1:22 PM, Bob McGraw K4TAX wrote: > > Think Field Day where it is normal to run several transceivers at the same time. Antenna separation and orientation is a key factor plus good quality band pass filters for each radio. > > Bob, K4TAX > > > Sent from my iPhone > >> On Jan 1, 2019, at 11:27 AM, wrote: >> >> Two transceivers is a typical contesting setup. I do not believe that you >> are contester so it would probably have little value to you. Typically a two >> radio station on operator setup (SO2R) has one transceiver on one band and >> the other on a different band with filters to protect the receivers. With >> super human operating skills very high run rates are possible: >> https://www.youtube.com/watch?v=bIW1Z1uFbRw&t=259s >> >> John KK9A >> >> >> >> Mark Wheeler mark3575 at icloud.com >> >> I see lots shack photos with two transceiver setups, especially two Elecraft >> K3S radios; how do you isolate the 2nd transceiver or SDR receiver (SDR >> Play, for example) so that you do not damage one transceiver while >> transmitting with the other? I am assuming there is a way to use both >> radios at the same time. >> >> Can I safely use an antenna switch to switch between multiple transceivers >> using one antenna, or will I risk damaging the non-transmitting radio on the >> other side of the antenna switch? >> >> If there is a way to do this can anyone explain their setup? >> >> Thanks. >> >> Mark >> WU6R >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to rmcgraw at blomand.net >> > > From donwilh at embarqmail.com Tue Jan 1 14:58:12 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Tue, 1 Jan 2019 14:58:12 -0500 Subject: [Elecraft] [FS] KX3 In-Reply-To: <1474444514.11474760.1546369962758@mail.yahoo.com> References: <1474444514.11474760.1546369962758.ref@mail.yahoo.com> <1474444514.11474760.1546369962758@mail.yahoo.com> Message-ID: I fail to understand why some hams restrict shipping to CONUS only. Hawaii and Alaska are US states, and Puerto Rico is a US Possession (whose people are US citizens). Shipping (particularly by USPS Flat Rate) is no different than shipping to a neighboring state. Why restrict your market by specifying CONUS which excludes HI, AK and Peurto Rico. 73, Don W3FPR On 1/1/2019 2:12 PM, Bob via Elecraft wrote: ? CONUS only. From eric at elecraft.com Tue Jan 1 15:38:28 2019 From: eric at elecraft.com (Eric Swartz - WA6HHQ, Elecraft) Date: Tue, 1 Jan 2019 12:38:28 -0800 Subject: [Elecraft] Watsonville CA In-Reply-To: References: Message-ID: That's one exit north from our factory. No relationship, but I was aware of them while they were in business here. 73, Eric elecraft.com _..._ > On Jan 1, 2019, at 9:17 AM, John Simmons wrote: > > While surfing the Internet looking at historical info on ham radio, Sideband Engineers became Linear Systems making the SB36 transceiver. Guess what? Linear Systems was at 220 Airport boulevard, Watsonville, CA! Coincidence? > > -John NI0K > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to eric.swartz at elecraft.com From pincon at erols.com Tue Jan 1 16:11:49 2019 From: pincon at erols.com (Charlie T) Date: Tue, 1 Jan 2019 16:11:49 -0500 Subject: [Elecraft] [FS] KX3 In-Reply-To: References: <1474444514.11474760.1546369962758.ref@mail.yahoo.com> <1474444514.11474760.1546369962758@mail.yahoo.com> Message-ID: <003d01d4a216$9fe08a20$dfa19e60$@erols.com> Yes, that's true for a post card or letter, but Priority Mail rates as well as Parcel Post, or whatever it's called nowadays, increase with distance. And very obviously with UPS or FedEx Ground. By offering CONUS shipping, you are NOT saying you won't ship outside that range, it's just that it'll cost more. Don't get me started on shipping to Canada !!! 73, Charlie k3ICH -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Don Wilhelm Sent: Tuesday, January 01, 2019 2:58 PM To: elecraft at mailman.qth.net Subject: Re: [Elecraft] [FS] KX3 I fail to understand why some hams restrict shipping to CONUS only. Hawaii and Alaska are US states, and Puerto Rico is a US Possession (whose people are US citizens). Shipping (particularly by USPS Flat Rate) is no different than shipping to a neighboring state. Why restrict your market by specifying CONUS which excludes HI, AK and Peurto Rico. 73, Don W3FPR On 1/1/2019 2:12 PM, Bob via Elecraft wrote: CONUS only. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to pincon at erols.com From donwilh at embarqmail.com Tue Jan 1 16:28:03 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Tue, 1 Jan 2019 16:28:03 -0500 Subject: [Elecraft] [FS] KX3 In-Reply-To: <003d01d4a216$9fe08a20$dfa19e60$@erols.com> References: <1474444514.11474760.1546369962758.ref@mail.yahoo.com> <1474444514.11474760.1546369962758@mail.yahoo.com> <003d01d4a216$9fe08a20$dfa19e60$@erols.com> Message-ID: <443f9d4b-9db4-7a63-ac62-c689620fd5f6@embarqmail.com> Charlie, If it fits into a USPS Flat Rate box (and a KX3 will nicely), the price is the same no matter what the distance - if it fits, it ships. Shipping to (or from) Canada (or any other non-US country) should always use USPS - both UPS and FedEx collect "brokerage fees" at the destination. I am not sure about DHL. Yes, I have done a LOT of shipping via USPS Priority mail. It is wise to weigh the package and consult the USPS postage calculator to determine the best method - Flat Rate or regular Priority. Flat Rate must use the right box, but regular Priority will go in a box up to 12 x 12 x 12 inches with no increase in price. Greater than 12 inches in any dimension will incur an additional fee. 73, Don W3FPR On 1/1/2019 4:11 PM, Charlie T wrote: > Yes, that's true for a post card or letter, but Priority Mail rates as well as Parcel Post, or whatever it's called nowadays, increase with distance. > > And very obviously with UPS or FedEx Ground. > By offering CONUS shipping, you are NOT saying you won't ship outside that range, it's just that it'll cost more. > > Don't get me started on shipping to Canada !!! > From W2xj at w2xj.net Tue Jan 1 16:50:29 2019 From: W2xj at w2xj.net (W2xj) Date: Tue, 1 Jan 2019 16:50:29 -0500 Subject: [Elecraft] [FS] KX3 In-Reply-To: <003d01d4a216$9fe08a20$dfa19e60$@erols.com> References: <1474444514.11474760.1546369962758.ref@mail.yahoo.com> <1474444514.11474760.1546369962758@mail.yahoo.com> <003d01d4a216$9fe08a20$dfa19e60$@erols.com> Message-ID: <6A8D37C2-11DC-4577-85E9-E6BB8E6DF8F9@w2xj.net> Sounds phobic to me. I ship to Canada all the time. No different than shipping anywhere else. Sent from my iPad > On Jan 1, 2019, at 4:11 PM, Charlie T wrote: > > Yes, that's true for a post card or letter, but Priority Mail rates as well as Parcel Post, or whatever it's called nowadays, increase with distance. > > And very obviously with UPS or FedEx Ground. > By offering CONUS shipping, you are NOT saying you won't ship outside that range, it's just that it'll cost more. > > Don't get me started on shipping to Canada !!! > > 73, Charlie k3ICH > > > > > > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net On Behalf Of Don Wilhelm > Sent: Tuesday, January 01, 2019 2:58 PM > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] [FS] KX3 > > I fail to understand why some hams restrict shipping to CONUS only. > > Hawaii and Alaska are US states, and Puerto Rico is a US Possession (whose people are US citizens). > > Shipping (particularly by USPS Flat Rate) is no different than shipping to a neighboring state. > > Why restrict your market by specifying CONUS which excludes HI, AK and Peurto Rico. > > 73, > Don W3FPR > > On 1/1/2019 2:12 PM, Bob via Elecraft wrote: > CONUS only. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message delivered to pincon at erols.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w2xj at w2xj.net > From k9yeq at live.com Tue Jan 1 18:58:09 2019 From: k9yeq at live.com (Bill Johnson) Date: Tue, 1 Jan 2019 23:58:09 +0000 Subject: [Elecraft] [FS] KX3 In-Reply-To: References: <1474444514.11474760.1546369962758.ref@mail.yahoo.com> <1474444514.11474760.1546369962758@mail.yahoo.com> Message-ID: Great comment, Don. Good for all to know. Should be sent US only! 73, Bill K9YEQ https://wrj-tech.com/ -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Don Wilhelm Sent: Tuesday, January 1, 2019 1:58 PM To: elecraft at mailman.qth.net Subject: Re: [Elecraft] [FS] KX3 I fail to understand why some hams restrict shipping to CONUS only. Hawaii and Alaska are US states, and Puerto Rico is a US Possession (whose people are US citizens). Shipping (particularly by USPS Flat Rate) is no different than shipping to a neighboring state. Why restrict your market by specifying CONUS which excludes HI, AK and Peurto Rico. 73, Don W3FPR On 1/1/2019 2:12 PM, Bob via Elecraft wrote: ? CONUS only. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com From dm4im at t-online.de Tue Jan 1 19:38:45 2019 From: dm4im at t-online.de (Martin) Date: Wed, 2 Jan 2019 01:38:45 +0100 Subject: [Elecraft] NAP3 & CW-Skimmer Message-ID: <0203d2bc-45d2-fb19-8ce1-97ae0e0d4f6a@t-online.de> Elecrafters, has anyone ever managed to tie NAP3 via virtual audio cable to CW-Skimmer? I'm not talking about the serial connection, this works. My equipment: K3, Win7 32bit, E-MU 0202 USB-Soundcard, NAP3 5.6 , CW-Skimmer 2.1 . Various virtual audio cables, none works. I'm not talking about the serial connection, this works. HNY to all. -- Ohne CW ist es nur CB.. 73, Martin DM4iM From bobk8rl at aol.com Tue Jan 1 20:49:50 2019 From: bobk8rl at aol.com (bobk8rl at aol.com) Date: Wed, 2 Jan 2019 01:49:50 +0000 (UTC) Subject: [Elecraft] [FS] PX3 [SOLD] References: <1677055671.11595653.1546393790416.ref@mail.yahoo.com> Message-ID: <1677055671.11595653.1546393790416@mail.yahoo.com> ?The PX3 has been sold.?BobK8RL? From dave at nk7z.net Tue Jan 1 21:44:57 2019 From: dave at nk7z.net (Dave Cole (NK7Z)) Date: Tue, 1 Jan 2019 18:44:57 -0800 Subject: [Elecraft] [FS] KX3 In-Reply-To: References: <1474444514.11474760.1546369962758.ref@mail.yahoo.com> <1474444514.11474760.1546369962758@mail.yahoo.com> Message-ID: <4bce7ae8-b7c9-494f-b194-f319341ea071@nk7z.net> Hi Bill, I suspect it is because they are not aware of this... Keep posting it, it will change minds... 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Contest ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 1/1/19 3:58 PM, Bill Johnson wrote: > Great comment, Don. Good for all to know. Should be sent US only! > > 73, > Bill > K9YEQ > > https://wrj-tech.com/ > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net On Behalf Of Don Wilhelm > Sent: Tuesday, January 1, 2019 1:58 PM > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] [FS] KX3 > > I fail to understand why some hams restrict shipping to CONUS only. > > Hawaii and Alaska are US states, and Puerto Rico is a US Possession (whose people are US citizens). > > Shipping (particularly by USPS Flat Rate) is no different than shipping to a neighboring state. > > Why restrict your market by specifying CONUS which excludes HI, AK and Peurto Rico. > > 73, > Don W3FPR > > On 1/1/2019 2:12 PM, Bob via Elecraft wrote: > ? CONUS only. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to dave at nk7z.net > From n8vz at qth.com Tue Jan 1 22:19:52 2019 From: n8vz at qth.com (=?utf-8?Q?Carl_J=C3=B3n_Denbow?=) Date: Tue, 1 Jan 2019 22:19:52 -0500 Subject: [Elecraft] [FS] KX3 In-Reply-To: References: <1474444514.11474760.1546369962758.ref@mail.yahoo.com> <1474444514.11474760.1546369962758@mail.yahoo.com> Message-ID: <9F83B8A4-E6A8-4B10-98F0-62C07388E5A2@qth.com> I used to think the same way. I would say simply, ?price includes shipping to any US address.? Then I sold a Kenwood rig to a ham in Hawai?i and the shipping via USPS was astronomical. It was too big for a flat rate box. And, I?m not actually sure the flat rate to Hawai?i is the same as to CONUS. At any rate, to be safe I now say ?price includes shipping to CONUS.? I?ll negotiate individually with any Alaskan, Puerto Rican, or Hawai?ian potential buyer. 73, Carl Sent from my iPhone =========================== Carl J?n Denbow, N8VZ 17 Coventry Lane Athens, Ohio 45701-3718 carl at n8vz.com www.n8vz.com EM89wh IRLP 4533 Echolink 116070 PSK and JT65 Forever! =========================== > On Jan 1, 2019, at 6:58 PM, Bill Johnson wrote: > > Great comment, Don. Good for all to know. Should be sent US only! > > 73, > Bill > K9YEQ > > https://wrj-tech.com/ > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net On Behalf Of Don Wilhelm > Sent: Tuesday, January 1, 2019 1:58 PM > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] [FS] KX3 > > I fail to understand why some hams restrict shipping to CONUS only. > > Hawaii and Alaska are US states, and Puerto Rico is a US Possession (whose people are US citizens). > > Shipping (particularly by USPS Flat Rate) is no different than shipping to a neighboring state. > > Why restrict your market by specifying CONUS which excludes HI, AK and Peurto Rico. > > 73, > Don W3FPR > > On 1/1/2019 2:12 PM, Bob via Elecraft wrote: > CONUS only. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to n8vz at qth.com From bobk8rl at aol.com Tue Jan 1 22:27:58 2019 From: bobk8rl at aol.com (bobk8rl at aol.com) Date: Wed, 2 Jan 2019 03:27:58 +0000 (UTC) Subject: [Elecraft] {FS] KX3 [Withdrawn] References: <373058177.11630610.1546399678018.ref@mail.yahoo.com> Message-ID: <373058177.11630610.1546399678018@mail.yahoo.com> ?My?KX3 is?no longer for sale via this forum.? Bob, K8RL? From W2xj at w2xj.net Tue Jan 1 23:01:29 2019 From: W2xj at w2xj.net (W2xj) Date: Tue, 1 Jan 2019 23:01:29 -0500 Subject: [Elecraft] [FS] KX3 In-Reply-To: <9F83B8A4-E6A8-4B10-98F0-62C07388E5A2@qth.com> References: <1474444514.11474760.1546369962758.ref@mail.yahoo.com> <1474444514.11474760.1546369962758@mail.yahoo.com> <9F83B8A4-E6A8-4B10-98F0-62C07388E5A2@qth.com> Message-ID: It seems easier to quote price without any shipping. Negotiate that separately. Some of us do not like USPS for some valid reasons. Others might be biased against UPS or FEDEX UMMV. Sent from my iPad > On Jan 1, 2019, at 10:19 PM, Carl J?n Denbow wrote: > > I used to think the same way. I would say simply, ?price includes shipping to any US address.? Then I sold a Kenwood rig to a ham in Hawai?i and the shipping via USPS was astronomical. It was too big for a flat rate box. And, I?m not actually sure the flat rate to Hawai?i is the same as to CONUS. At any rate, to be safe I now say ?price includes shipping to CONUS.? I?ll negotiate individually with any Alaskan, Puerto Rican, or Hawai?ian potential buyer. > > 73, > > Carl > > Sent from my iPhone > =========================== > Carl J?n Denbow, N8VZ > 17 Coventry Lane > Athens, Ohio 45701-3718 > > carl at n8vz.com > www.n8vz.com > EM89wh > > IRLP 4533 Echolink 116070 > > PSK and JT65 Forever! > =========================== > >> On Jan 1, 2019, at 6:58 PM, Bill Johnson wrote: >> >> Great comment, Don. Good for all to know. Should be sent US only! >> >> 73, >> Bill >> K9YEQ >> >> https://wrj-tech.com/ >> >> -----Original Message----- >> From: elecraft-bounces at mailman.qth.net On Behalf Of Don Wilhelm >> Sent: Tuesday, January 1, 2019 1:58 PM >> To: elecraft at mailman.qth.net >> Subject: Re: [Elecraft] [FS] KX3 >> >> I fail to understand why some hams restrict shipping to CONUS only. >> >> Hawaii and Alaska are US states, and Puerto Rico is a US Possession (whose people are US citizens). >> >> Shipping (particularly by USPS Flat Rate) is no different than shipping to a neighboring state. >> >> Why restrict your market by specifying CONUS which excludes HI, AK and Peurto Rico. >> >> 73, >> Don W3FPR >> >> On 1/1/2019 2:12 PM, Bob via Elecraft wrote: >> CONUS only. >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to n8vz at qth.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w2xj at w2xj.net From rmcgraw at blomand.net Tue Jan 1 23:06:41 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Tue, 1 Jan 2019 22:06:41 -0600 Subject: [Elecraft] [FS] KX3 In-Reply-To: <9F83B8A4-E6A8-4B10-98F0-62C07388E5A2@qth.com> References: <1474444514.11474760.1546369962758.ref@mail.yahoo.com> <1474444514.11474760.1546369962758@mail.yahoo.com> <9F83B8A4-E6A8-4B10-98F0-62C07388E5A2@qth.com> Message-ID: <388dcdec-10d8-cfb0-3a5e-741f5a835f3e@blomand.net> I always sell for a price and state that the buyer pays packing and shipping charges. ? I don't recall ever loosing a sale due to those terms. ? I use a commercial packing service and can always quote the packing and shipping charges once the destination is known. In general I find USPS Priority is less expensive and faster than UPS ground or Fed-X ground.?? I shipped my K3S to Elecraft via USPS Priority.? It took 3 days from the time I dropped it at the Post Office on a Wednesday and? was delivered on Friday.??? Once repaired, it was shipped? to me via UPS ground which took 9 days, of which it sat in a UPS distribution center for 3 days.?? I'm not bashing UPS, just stating the facts. I sold my Collins 32S1 transmitter to a fellow in Australia.?? He paid $425 for the item and the shipping and packing charges was $375, for a total of $800 USD.??? Expensive transmitter!? But I guess he wanted it real bad. 73 Bob, K4TAX From gliderboy1955 at yahoo.com Tue Jan 1 23:11:20 2019 From: gliderboy1955 at yahoo.com (eric norris) Date: Wed, 2 Jan 2019 04:11:20 +0000 (UTC) Subject: [Elecraft] Thanks, Elecraft! References: <1111985833.4892677.1546402280957.ref@mail.yahoo.com> Message-ID: <1111985833.4892677.1546402280957@mail.yahoo.com> I wanted to use a vintage rig for SKN, and with my Heathkits out of action, I turned to my trusty K2--little used since the KX3 and KX2 came out. What a joy this radio is to use!? I had forgotten what a gem it is.? Thanks, Elecraft! 73 es HNY, Eric WD6DBM Sent from Yahoo Mail on Android From W2xj at w2xj.net Tue Jan 1 23:23:27 2019 From: W2xj at w2xj.net (W2xj) Date: Tue, 1 Jan 2019 23:23:27 -0500 Subject: [Elecraft] [FS] KX3 In-Reply-To: <388dcdec-10d8-cfb0-3a5e-741f5a835f3e@blomand.net> References: <1474444514.11474760.1546369962758.ref@mail.yahoo.com> <1474444514.11474760.1546369962758@mail.yahoo.com> <9F83B8A4-E6A8-4B10-98F0-62C07388E5A2@qth.com> <388dcdec-10d8-cfb0-3a5e-741f5a835f3e@blomand.net> Message-ID: <0A31D9F4-42D4-436B-A895-F5A8CE9C380C@w2xj.net> The problem with USPS if you live in an apartment is that they drop the box at the door. Many packages are stolen. Sent from my iPad > On Jan 1, 2019, at 11:06 PM, Bob McGraw K4TAX wrote: > > I always sell for a price and state that the buyer pays packing and shipping charges. I don't recall ever loosing a sale due to those terms. I use a commercial packing service and can always quote the packing and shipping charges once the destination is known. > > In general I find USPS Priority is less expensive and faster than UPS ground or Fed-X ground. I shipped my K3S to Elecraft via USPS Priority. It took 3 days from the time I dropped it at the Post Office on a Wednesday and was delivered on Friday. Once repaired, it was shipped to me via UPS ground which took 9 days, of which it sat in a UPS distribution center for 3 days. I'm not bashing UPS, just stating the facts. > > I sold my Collins 32S1 transmitter to a fellow in Australia. He paid $425 for the item and the shipping and packing charges was $375, for a total of $800 USD. Expensive transmitter! But I guess he wanted it real bad. > > 73 > > Bob, K4TAX > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w2xj at w2xj.net From gliderboy1955 at yahoo.com Tue Jan 1 23:23:38 2019 From: gliderboy1955 at yahoo.com (eric norris) Date: Wed, 2 Jan 2019 04:23:38 +0000 (UTC) Subject: [Elecraft] ELECAN DUMMY LOAD References: <1298013203.4896985.1546403018302.ref@mail.yahoo.com> Message-ID: <1298013203.4896985.1546403018302@mail.yahoo.com> Now that Elecraft has a full line of high-power amplifiers, why not produce a high-power dummy load?? A one-gallon paint can, with a precision resistor take-off for accurate power measurement, snazzy graphics maybe with pictures of Eric and Wayne :-).? You know, like the Heathkit Cantenna, only filled with a gallon of Mojo. 73 Eric WD6DBM Sent from Yahoo Mail on Android From wa8jxm at gmail.com Tue Jan 1 23:42:14 2019 From: wa8jxm at gmail.com (Ken) Date: Tue, 1 Jan 2019 23:42:14 -0500 Subject: [Elecraft] Ideas for an FT8 Radio In-Reply-To: References: <1768811326.10637320.1546118162298.ref@mail.yahoo.com> <1768811326.10637320.1546118162298@mail.yahoo.com> Message-ID: Geesh, how much power are people running?? I've always thought 50 watts was excessive for digital modes! As for the concept of a dedicated FT8 radio, what's going to happen when FT9 becomes the latest craze?? How many people operate Olivia (or even JT-65) now? Ken WA8JXM On 12/29/18 5:23 PM, Rick Bates (WA6NHC) wrote: > 50-70 watts out is fine, that will provide adequate drive for most amps to run their full rated power out. If you don?t want that much, turn it down. From lee.buller at gmail.com Tue Jan 1 23:50:53 2019 From: lee.buller at gmail.com (Leroy Buller) Date: Tue, 1 Jan 2019 22:50:53 -0600 Subject: [Elecraft] ELECAN DUMMY LOAD In-Reply-To: <1298013203.4896985.1546403018302@mail.yahoo.com> References: <1298013203.4896985.1546403018302.ref@mail.yahoo.com> <1298013203.4896985.1546403018302@mail.yahoo.com> Message-ID: Ohhhh. mojo. I'll take a case. On Tue, Jan 1, 2019, 10:34 PM eric norris via Elecraft < elecraft at mailman.qth.net wrote: > Now that Elecraft has a full line of high-power amplifiers, why not > produce a high-power dummy load? A one-gallon paint can, with a precision > resistor take-off for accurate power measurement, snazzy graphics maybe > with pictures of Eric and Wayne :-). You know, like the Heathkit Cantenna, > only filled with a gallon of Mojo. > 73 Eric WD6DBM > > Sent from Yahoo Mail on Android > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to lee.buller at gmail.com From wa6nhc at gmail.com Tue Jan 1 23:56:53 2019 From: wa6nhc at gmail.com (Rick Bates (WA6NHC)) Date: Tue, 1 Jan 2019 20:56:53 -0800 Subject: [Elecraft] Ideas for an FT8 Radio In-Reply-To: References: <1768811326.10637320.1546118162298.ref@mail.yahoo.com> <1768811326.10637320.1546118162298@mail.yahoo.com> Message-ID: <54E40D59-C141-4CF1-A0B2-E7A82BF03DBF@gmail.com> You run the amount of power required to make the contact, up to the legal limit. If you wish to operate QRP, that?s your choice. I remind you that RTTY is also digital and full legal limit is common; FT8 is semi-automated RTTY with complex pattern but improved reception. High power is also common. On some bands (160M) its nearly a requirement. There is no difference between antenna gain, when possible or amp gain of equal dB raise. Many folks can?t use improved antennas (no space or budget), so power is an answer. The true issue is when folks don?t run clean power. 73, Rick wa6nhc Spiel Czech happens > On Jan 1, 2019, at 8:42 PM, Ken wrote: > > Geesh, how much power are people running? I've always thought 50 watts was excessive for digital modes! > > As for the concept of a dedicated FT8 radio, what's going to happen when FT9 becomes the latest craze? How many people operate Olivia (or even JT-65) now? > > Ken WA8JXM > > >> On 12/29/18 5:23 PM, Rick Bates (WA6NHC) wrote: >> 50-70 watts out is fine, that will provide adequate drive for most amps to run their full rated power out. If you don?t want that much, turn it down. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wa6nhc at gmail.com From k9ma at sdellington.us Tue Jan 1 23:58:56 2019 From: k9ma at sdellington.us (K9MA) Date: Tue, 1 Jan 2019 22:58:56 -0600 Subject: [Elecraft] [FS] KX3 In-Reply-To: <388dcdec-10d8-cfb0-3a5e-741f5a835f3e@blomand.net> References: <1474444514.11474760.1546369962758.ref@mail.yahoo.com> <1474444514.11474760.1546369962758@mail.yahoo.com> <9F83B8A4-E6A8-4B10-98F0-62C07388E5A2@qth.com> <388dcdec-10d8-cfb0-3a5e-741f5a835f3e@blomand.net> Message-ID: <9c1499f0-e455-0342-a9b5-2757087baa75@sdellington.us> On 1/1/2019 22:06, Bob McGraw K4TAX wrote: > I always sell for a price and state that the buyer pays packing and > shipping charges. ? I don't recall ever losing a sale due to those terms. I've recently been selling lots of stuff for the widow of a SK. While I've been trying to negotiate the prices exclusive of shipping, many potential buyers insist on a price with shipping, so I have to repeatedly calculate shipping costs for them. This takes a lot of time, and often I never hear from them again. (And I'm getting nothing out of it except work.) I'm thinking of posting the weight and dimensions of the box, and a not telling them to figure it out themselves. So, please realize that many sellers aren't in it for the money, and don't owe you shipping services. 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us From k9ma at sdellington.us Wed Jan 2 00:07:16 2019 From: k9ma at sdellington.us (K9MA) Date: Tue, 1 Jan 2019 23:07:16 -0600 Subject: [Elecraft] [FS] KX3 In-Reply-To: <9c1499f0-e455-0342-a9b5-2757087baa75@sdellington.us> References: <1474444514.11474760.1546369962758.ref@mail.yahoo.com> <1474444514.11474760.1546369962758@mail.yahoo.com> <9F83B8A4-E6A8-4B10-98F0-62C07388E5A2@qth.com> <388dcdec-10d8-cfb0-3a5e-741f5a835f3e@blomand.net> <9c1499f0-e455-0342-a9b5-2757087baa75@sdellington.us> Message-ID: Correction:? "and a note telling them..." On 1/1/2019 22:58, K9MA wrote: > On 1/1/2019 22:06, Bob McGraw K4TAX wrote: >> I always sell for a price and state that the buyer pays packing and >> shipping charges. ? I don't recall ever losing a sale due to those >> terms. > > I've recently been selling lots of stuff for the widow of a SK. While > I've been trying to negotiate the prices exclusive of shipping, many > potential buyers insist on a price with shipping, so I have to > repeatedly calculate shipping costs for them. This takes a lot of > time, and often I never hear from them again. (And I'm getting nothing > out of it except work.) I'm thinking of posting the weight and > dimensions of the box, and a note telling them to figure it out > themselves. So, please realize that many sellers aren't in it for the > money, and don't owe you shipping services. > > 73, > > Scott K9MA > -- Scott K9MA k9ma at sdellington.us From ericrosenberg.dc at gmail.com Wed Jan 2 01:21:54 2019 From: ericrosenberg.dc at gmail.com (Eric Rosenberg) Date: Wed, 02 Jan 2019 06:21:54 +0000 Subject: [Elecraft] For Sale K3S/P3 In-Reply-To: <<1546037973670-0.post@n2.nabble.com>> References: <<1546037973670-0.post@n2.nabble.com>> Message-ID: Is your P3 still available? 73, Eric W3DQ From ericrosenberg.dc at gmail.com Wed Jan 2 01:31:35 2019 From: ericrosenberg.dc at gmail.com (Eric Rosenberg) Date: Wed, 02 Jan 2019 06:31:35 +0000 Subject: [Elecraft] Oops.. did again. Message-ID: Sorry about muis-posting again. The emails in digest form are killing me! Eric W3DQ From la9nea at gmail.com Wed Jan 2 01:40:35 2019 From: la9nea at gmail.com (Viggo Magnus Nilsen Nilsen) Date: Wed, 2 Jan 2019 06:40:35 +0000 Subject: [Elecraft] (no subject) Message-ID: From frantz at pwpconsult.com Wed Jan 2 01:56:50 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Tue, 1 Jan 2019 22:56:50 -0800 Subject: [Elecraft] Ideas for an FT8 Radio In-Reply-To: Message-ID: The short answer for issues of obsolescence is the same for computers as it is for RF components: modularization. I replaced the synthesizers in my K3 when better ones came out. I would expect to do the same for the computer, whether it is integrated into the radio package or separate. I think the best route towards a FT8 radio is to have a radio that will do FT8 and any other mode its computer can handle. Running a single-board Linux computer seems attractive. It seems like the radio will need a keyboard, display, pointing device, audio, and RS-232 interfaces. Raspberry PIs have USB for keyboard, pointing device, and RS-232; HDMI for display; and built-in audio. For future flexibility, just using USB and HDMI may be attractive. Or just USB if there are usable USB displays. Using only one or two interfaces makes swapping computers simple, at least until the interfaces are no longer supported. USB seem to have a lifespan on par with radios, so obsolescence seems a low risk. HDMI is higher risk, as display interfaces are caught up in the whole Digital Rights Management arms race. 73 Bill AE6JV On 1/1/19 at 8:42 PM, wa8jxm at gmail.com (Ken) wrote: >As for the concept of a dedicated FT8 radio, what's going to >happen when FT9 becomes the latest craze?? How many people >operate Olivia (or even JT-65) now? ------------------------------------------------------------------------ Bill Frantz |"Insofar as the propositions of mathematics refer to 408-356-8506 | reality, they are not certain; and insofar they are www.pwpconsult.com | certain, they do not refer to reality.? -- Einstein From kl7uw at acsalaska.net Wed Jan 2 04:25:49 2019 From: kl7uw at acsalaska.net (Edward R Cole) Date: Wed, 02 Jan 2019 00:25:49 -0900 Subject: [Elecraft] [FS] PX3 Message-ID: <201901020925.x029PoRu024569@mail42c28.carrierzone.com> I would have bought the PX3. But get the list by digest so not fast enough with my offer. I LIVE IN ALASKA so I am well aware of USPS rates for shipping in/out of AK. Flat-rate Priority Mail to anywhere in the USA is the same. Parcel Post is by zone and can be expensive for large/heavy items and takes about 12-16 days delivery, depending on destination. USPS/UPS/FedEx all take 3-days (min) for delivery to AK (even though listed as 2-day delivery). UPS/Fedex are typically twice as expensive for the same package, so if it fits a flat-rate box its much cheaper. All my mail is sent to the PO where I have a PO Box (no home delivery) so much more secure than UPS/FedEx that drop the box on my front porch and scoot. Unless I order signature required. I ship 15 to 20 items per year to US and International locations so I am not talking theory! 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: dubususa at gmail.com From ws6x.ars at gmail.com Wed Jan 2 06:59:28 2019 From: ws6x.ars at gmail.com (Jim - WS6X) Date: Wed, 2 Jan 2019 06:59:28 -0500 Subject: [Elecraft] OT CONUS Message-ID: <000001d4a292$9d991fd0$d8cb5f70$@gmail.com> While we're making things perfectly clear... Why does CONUS exclude AK? I had not heard that AK slid off the North American continental plates. You could try "lower 48" or "contiguous 48" if that's what you intend. HNY! Jim - WS6X From wes_n7ws at triconet.org Wed Jan 2 07:39:34 2019 From: wes_n7ws at triconet.org (Wes Stewart) Date: Wed, 2 Jan 2019 05:39:34 -0700 Subject: [Elecraft] Ideas for an FT8 Radio In-Reply-To: References: <1768811326.10637320.1546118162298.ref@mail.yahoo.com> <1768811326.10637320.1546118162298@mail.yahoo.com> Message-ID: <8943e0c4-1826-58ad-83b5-9ea14634a2f7@triconet.org> You were wrong, but it's a common misconception. Wes? N7WS On 1/1/2019 9:42 PM, Ken wrote: > Geesh, how much power are people running?? I've always thought 50 watts was > excessive for digital modes! From n6lrv at outlook.com Wed Jan 2 09:40:15 2019 From: n6lrv at outlook.com (n6lrv at outlook.com) Date: Wed, 2 Jan 2019 14:40:15 +0000 Subject: [Elecraft] OT CONUS In-Reply-To: <000001d4a292$9d991fd0$d8cb5f70$@gmail.com> References: <000001d4a292$9d991fd0$d8cb5f70$@gmail.com> Message-ID: https://en.wiktionary.org/wiki/CONUS> Contiguous not continental. CONUS - Wiktionary (chiefly military) Acronym of The contiguous United States; the 48 states excluding Alaska and Hawaii en.wiktionary.org ________________________________ From: elecraft-bounces at mailman.qth.net on behalf of Jim - WS6X Sent: Wednesday, January 2, 2019 3:59 AM To: elecraft at mailman.qth.net Subject: [Elecraft] OT CONUS While we're making things perfectly clear... Why does CONUS exclude AK? I had not heard that AK slid off the North American continental plates. You could try "lower 48" or "contiguous 48" if that's what you intend. HNY! Jim - WS6X ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to n6lrv at outlook.com From wunder at wunderwood.org Wed Jan 2 11:05:20 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Wed, 2 Jan 2019 08:05:20 -0800 Subject: [Elecraft] OT CONUS In-Reply-To: References: <000001d4a292$9d991fd0$d8cb5f70$@gmail.com> Message-ID: The U.S. Board on Geographic Names defines ?conterminous United States?. Conterminous United States: The 48 States and the District of Columbia, that is, the United States prior to January 3, 1959 (Alaska Statehood) wholly filling an unbroken block of territory and excluding Alaska and Hawaii. Although the official reference applies the term "conterminous," many use the word "contiguous," which is almost synonymous and better known. https://www.usgs.gov/faqs/what-constitutes-united-states-what-are-official-definitions wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 2, 2019, at 6:40 AM, n6lrv at outlook.com wrote: > > https://en.wiktionary.org/wiki/CONUS> Contiguous not continental. > CONUS - Wiktionary > (chiefly military) Acronym of The contiguous United States; the 48 states excluding Alaska and Hawaii > en.wiktionary.org > > > > > ________________________________ > From: elecraft-bounces at mailman.qth.net on behalf of Jim - WS6X > Sent: Wednesday, January 2, 2019 3:59 AM > To: elecraft at mailman.qth.net > Subject: [Elecraft] OT CONUS > > While we're making things perfectly clear... > Why does CONUS exclude AK? I had not heard that AK slid off the North > American continental plates. You could try "lower 48" or "contiguous 48" if > that's what you intend. > HNY! > Jim - WS6X > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to n6lrv at outlook.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From wa6nhc at gmail.com Wed Jan 2 12:36:21 2019 From: wa6nhc at gmail.com (Rick Bates (WA6NHC)) Date: Wed, 2 Jan 2019 09:36:21 -0800 Subject: [Elecraft] [FS] PX3 In-Reply-To: <201901020925.x029PoRu024569@mail42c28.carrierzone.com> References: <201901020925.x029PoRu024569@mail42c28.carrierzone.com> Message-ID: And if large/heavy enough, transport to HI is via shipping (actual ships); which bundle loads for efficiency and the arrival time can often be measured in weeks (and still not cheap); a place where no overnight UPS/USPS service exists to/from the mainland. Rick WA6NHC Smell Czech correction happen > On Jan 2, 2019, at 1:25 AM, Edward R Cole wrote: > > I would have bought the PX3. But get the list by digest so not fast enough with my offer. > > I LIVE IN ALASKA so I am well aware of USPS rates for shipping in/out of AK. Flat-rate Priority Mail to anywhere in the USA is the same. > Parcel Post is by zone and can be expensive for large/heavy items and takes about 12-16 days delivery, depending on destination. > > USPS/UPS/FedEx all take 3-days (min) for delivery to AK (even though listed as 2-day delivery). UPS/Fedex are typically twice as expensive for the same package, so if it fits a flat-rate box its much cheaper. All my mail is sent to the PO where I have a PO Box (no home delivery) so much more secure than UPS/FedEx that drop the box on my front porch and scoot. Unless I order signature required. > > I ship 15 to 20 items per year to US and International locations so I am not talking theory! > > 73, Ed - KL7UW > http://www.kl7uw.com > Dubus-NA Business mail: > dubususa at gmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wa6nhc at gmail.com From elecraftcovers at gmail.com Wed Jan 2 12:40:45 2019 From: elecraftcovers at gmail.com (Rose) Date: Wed, 2 Jan 2019 10:40:45 -0700 Subject: [Elecraft] OT: USPS mailing Message-ID: I've been making Elecraft cases and covers for eleven years. All of the hundreds I've made have been sent via USPS Priority Mail. To date, not a single one has gone astray ? a remarkable record. I live "in the country" and have no mail delivery, so all of my USPS business is transacted in town at the Post Office. I purchase task-specific sizes of cartons from U-Line. usually 50 at a time. Cover orders are sent in padded envelopes, again purchased specifically from U-Line for the task. The Post Office provides a delivery date on each Priority Mail receipt, and these ? so far ? have proved highly accurate. Priority mail will reach anywhere in the US within a maximum of three days. An exception ? an order to Turkey took -five- days! (:-) I will -not- use any other service. Fed-Ex is an awful organization, IMO. 88 ! Rose - N7HKW ElecraftCovers at gmail.com 1-406-560-3738 From gthornton at thorntonmostullaw.com Wed Jan 2 13:00:32 2019 From: gthornton at thorntonmostullaw.com (George Thornton) Date: Wed, 2 Jan 2019 18:00:32 +0000 Subject: [Elecraft] OT: USPS mailing In-Reply-To: References: Message-ID: I am one of Rose's satisfied customers. I do need to report an unfavorable experience with USPS. I mailed a simple envelope on a Friday and sent it priority mail. The letter was going from Seattle to a town in central Colorado. The letter did not get there until the following Thursday. Although I paid close to $10 to expedite the letter I fail to see how I gained any expedition at all. Simple first class mail would have been just as fast. Please note this comment has nothing to do with Rose or her business. The package I got from her arrived timely. -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Rose Sent: Wednesday, January 2, 2019 9:41 AM To: Elecraft Reflector Subject: [Elecraft] OT: USPS mailing I've been making Elecraft cases and covers for eleven years. All of the hundreds I've made have been sent via USPS Priority Mail. To date, not a single one has gone astray ? a remarkable record. I live "in the country" and have no mail delivery, so all of my USPS business is transacted in town at the Post Office. I purchase task-specific sizes of cartons from U-Line. usually 50 at a time. Cover orders are sent in padded envelopes, again purchased specifically from U-Line for the task. The Post Office provides a delivery date on each Priority Mail receipt, and these ? so far ? have proved highly accurate. Priority mail will reach anywhere in the US within a maximum of three days. An exception ? an order to Turkey took -five- days! (:-) I will -not- use any other service. Fed-Ex is an awful organization, IMO. 88 ! Rose - N7HKW ElecraftCovers at gmail.com 1-406-560-3738 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to gthornton at thorntonmostullaw.com From donovanf at starpower.net Wed Jan 2 13:50:43 2019 From: donovanf at starpower.net (donovanf at starpower.net) Date: Wed, 2 Jan 2019 13:50:43 -0500 (EST) Subject: [Elecraft] OT: USPS mailing In-Reply-To: Message-ID: <436778548.6395052.1546455043271.JavaMail.root@starpower.net> Hi George, If you paid for Priority Mail Express, you're due a refund from the Post Office. If you used Priority Mail you did NOT pay for expedited service, there's no delivery time guarantee and no promise that it will be delivered faster than First Class. The only benefits of Priority Mail are package tracking and $50 insurance. Perhaps your postmaster mislead you... 73 Frank W3LPL ----- Original Message ----- From: "George Thornton" To: "Rose" , "Elecraft Reflector" Sent: Wednesday, January 2, 2019 6:00:32 PM Subject: Re: [Elecraft] OT: USPS mailing I am one of Rose's satisfied customers. I do need to report an unfavorable experience with USPS. I mailed a simple envelope on a Friday and sent it priority mail. The letter was going from Seattle to a town in central Colorado. The letter did not get there until the following Thursday. Although I paid close to $10 to expedite the letter I fail to see how I gained any expedition at all. Simple first class mail would have been just as fast. Please note this comment has nothing to do with Rose or her business. The package I got from her arrived timely. -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Rose Sent: Wednesday, January 2, 2019 9:41 AM To: Elecraft Reflector Subject: [Elecraft] OT: USPS mailing I've been making Elecraft cases and covers for eleven years. All of the hundreds I've made have been sent via USPS Priority Mail. To date, not a single one has gone astray ? a remarkable record. I live "in the country" and have no mail delivery, so all of my USPS business is transacted in town at the Post Office. I purchase task-specific sizes of cartons from U-Line. usually 50 at a time. Cover orders are sent in padded envelopes, again purchased specifically from U-Line for the task. The Post Office provides a delivery date on each Priority Mail receipt, and these ? so far ? have proved highly accurate. Priority mail will reach anywhere in the US within a maximum of three days. An exception ? an order to Turkey took -five- days! (:-) I will -not- use any other service. Fed-Ex is an awful organization, IMO. 88 ! Rose - N7HKW ElecraftCovers at gmail.com 1-406-560-3738 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to gthornton at thorntonmostullaw.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to donovanf at starpower.net From k2vco.vic at gmail.com Wed Jan 2 14:03:04 2019 From: k2vco.vic at gmail.com (Victor Rosenthal 4X6GP) Date: Wed, 2 Jan 2019 21:03:04 +0200 Subject: [Elecraft] OT: USPS mailing In-Reply-To: References: Message-ID: <1aa1494a-1bfd-d36c-29bc-f988b534fcc7@gmail.com> 1. In the US, USPS priority mail is great. If you are sending something outside of the country it is out of USPS' control at the foreign airport. This is where the fun begins. In Israel, our postal service adds at least 2 weeks to get a package through customs, and you don't know where it is or what's going on for most of that time. Sometimes things get lost, and sometimes there are complications with customs. UPS does it in half a day without problems, but the cost can be astronomical. I bought a big Johnson Matchbox from a guy in MN. UPS charged more than $450 to ship it. 2. There is no good reason for Americans to not sell things to foreigners if the foreigner agrees to pay the actual shipping in advance by Paypal or bank transfer. All the risk is on the buyer. The only thing the American has to do is fill out a customs form when he sends it. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 02/01/2019 19:40, Rose wrote: > I've been making Elecraft cases and covers for eleven years. All > of the hundreds I've made have been sent via USPS Priority Mail. > To date, not a single one has gone astray ? a remarkable record. > I live "in the country" and have no mail delivery, so all of my USPS > business is transacted in town at the Post Office. > > I purchase task-specific sizes of cartons from U-Line. usually 50 > at a time. Cover orders are sent in padded envelopes, again > purchased specifically from U-Line for the task. > > The Post Office provides a delivery date on each Priority Mail > receipt, and these ? so far ? have proved highly accurate. Priority > mail will reach anywhere in the US within a maximum of three days. > An exception ? an order to Turkey took -five- days! (:-) > > I will -not- use any other service. Fed-Ex is an awful organization, IMO. > > 88 ! > Rose - N7HKW > ElecraftCovers at gmail.com > 1-406-560-3738 From W2xj at w2xj.net Wed Jan 2 14:21:25 2019 From: W2xj at w2xj.net (W2xj) Date: Wed, 2 Jan 2019 14:21:25 -0500 Subject: [Elecraft] OT: USPS mailing In-Reply-To: <1aa1494a-1bfd-d36c-29bc-f988b534fcc7@gmail.com> References: <1aa1494a-1bfd-d36c-29bc-f988b534fcc7@gmail.com> Message-ID: <54EF7162-B14D-4310-A25F-57003A746068@w2xj.net> I can?t speak for other countries but shipping to Canada tracks through customs and all the way to delivery. Sent from my iPad > On Jan 2, 2019, at 2:03 PM, Victor Rosenthal 4X6GP wrote: > > 1. In the US, USPS priority mail is great. If you are sending something outside of the country it is out of USPS' control at the foreign airport. This is where the fun begins. In Israel, our postal service adds at least 2 weeks to get a package through customs, and you don't know where it is or what's going on for most of that time. Sometimes things get lost, and sometimes there are complications with customs. UPS does it in half a day without problems, but the cost can be astronomical. I bought a big Johnson Matchbox from a guy in MN. UPS charged more than $450 to ship it. > > 2. There is no good reason for Americans to not sell things to foreigners if the foreigner agrees to pay the actual shipping in advance by Paypal or bank transfer. All the risk is on the buyer. The only thing the American has to do is fill out a customs form when he sends it. > > 73, > Victor, 4X6GP > Rehovot, Israel > Formerly K2VCO > CWops no. 5 > http://www.qsl.net/k2vco/ >> On 02/01/2019 19:40, Rose wrote: >> I've been making Elecraft cases and covers for eleven years. All >> of the hundreds I've made have been sent via USPS Priority Mail. >> To date, not a single one has gone astray ? a remarkable record. >> I live "in the country" and have no mail delivery, so all of my USPS >> business is transacted in town at the Post Office. >> I purchase task-specific sizes of cartons from U-Line. usually 50 >> at a time. Cover orders are sent in padded envelopes, again >> purchased specifically from U-Line for the task. >> The Post Office provides a delivery date on each Priority Mail >> receipt, and these ? so far ? have proved highly accurate. Priority >> mail will reach anywhere in the US within a maximum of three days. >> An exception ? an order to Turkey took -five- days! (:-) >> I will -not- use any other service. Fed-Ex is an awful organization, IMO. >> 88 ! >> Rose - N7HKW >> ElecraftCovers at gmail.com >> 1-406-560-3738 > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w2xj at w2xj.net From cyaffey at gmail.com Wed Jan 2 14:13:54 2019 From: cyaffey at gmail.com (Carl Yaffey) Date: Wed, 2 Jan 2019 14:13:54 -0500 Subject: [Elecraft] Ideas for an FT8 Radio In-Reply-To: <54E40D59-C141-4CF1-A0B2-E7A82BF03DBF@gmail.com> References: <1768811326.10637320.1546118162298.ref@mail.yahoo.com> <1768811326.10637320.1546118162298@mail.yahoo.com> <54E40D59-C141-4CF1-A0B2-E7A82BF03DBF@gmail.com> Message-ID: <18609602-1803-4570-916C-9AD36269BA27@gmail.com> Rick, Thanks for this. Some people seem to think FT8 is a low power mode. It?s a weak signal mode. 73, K8NU > On Jan 1, 2019, at 11:56 PM, Rick Bates (WA6NHC) wrote: > > You run the amount of power required to make the contact, up to the legal limit. If you wish to operate QRP, that?s your choice. > > I remind you that RTTY is also digital and full legal limit is common; FT8 is semi-automated RTTY with complex pattern but improved reception. High power is also common. On some bands (160M) its nearly a requirement. > > There is no difference between antenna gain, when possible or amp gain of equal dB raise. Many folks can?t use improved antennas (no space or budget), so power is an answer. > > The true issue is when folks don?t run clean power. > > 73, > Rick wa6nhc > > Spiel Czech happens Carl Yaffey K8NU Recording studio. cyaffeyNO_SPAM at gmail.com 614 268 6353, Columbus OH http://www.carl-yaffey.com http://www.grassahol.com http://www.bluesswing.com Https://www.columbusfolkmusicsociety.org http://www.timbrewolves.carl-yaffey.com http://www.columbusshotokankarate.com From marklgoldberg at gmail.com Wed Jan 2 14:25:21 2019 From: marklgoldberg at gmail.com (Mark Goldberg) Date: Wed, 2 Jan 2019 12:25:21 -0700 Subject: [Elecraft] OT: USPS mailing In-Reply-To: <1aa1494a-1bfd-d36c-29bc-f988b534fcc7@gmail.com> References: <1aa1494a-1bfd-d36c-29bc-f988b534fcc7@gmail.com> Message-ID: Actually, there are issues with USPS Priority Mail if you use Paypal and sell to someone you don't know and hope to use the Seller Protections. If you read the fine print, Paypal does not accept the proof of delivery unless a specific signature is obtained, which is not available with Priority Mail. I still use it, but there is a risk the buyer can claim they did not receive the product and ask for a charge back from Paypal. I have never had anything lost or any customer claim it was not received. Once, a UK customer was not home and did not pay the Customs fee in time. The box was dutifully sent back to me. I received it two months later and reshipped it to the customer. About three months after the order, they finally got it! Now I make sure they have the tracking number and remind them when it gets to their country so they are looking for it. Another time a clearly marked package to a foreign country got mistakenly sent to a US post office because the automatic reader picked up part of the address that looked like a zip code. I tracked that down with the help of a small town postmaster and it finally made it to the destination. So, I have had some "incidents" but eventually every package got to it's destination. On a big order I did not want to risk, I shipped via DHL. It was way more expensive and they had some issues with customs too, but it finally arrived. 73, Mark W7MLG On Wed, Jan 2, 2019 at 12:03 PM Victor Rosenthal 4X6GP wrote: > 1. In the US, USPS priority mail is great. If you are sending something > outside of the country it is out of USPS' control at the foreign > airport. This is where the fun begins. In Israel, our postal service > adds at least 2 weeks to get a package through customs, and you don't > know where it is or what's going on for most of that time. Sometimes > things get lost, and sometimes there are complications with customs. UPS > does it in half a day without problems, but the cost can be > astronomical. I bought a big Johnson Matchbox from a guy in MN. UPS > charged more than $450 to ship it. > > 2. There is no good reason for Americans to not sell things to > foreigners if the foreigner agrees to pay the actual shipping in advance > by Paypal or bank transfer. All the risk is on the buyer. The only thing > the American has to do is fill out a customs form when he sends it. > > 73, > Victor, 4X6GP > Rehovot, Israel > Formerly K2VCO > CWops no. 5 > http://www.qsl.net/k2vco/ > On 02/01/2019 19:40, Rose wrote: > > I've been making Elecraft cases and covers for eleven years. All > > of the hundreds I've made have been sent via USPS Priority Mail. > > To date, not a single one has gone astray ? a remarkable record. > > I live "in the country" and have no mail delivery, so all of my USPS > > business is transacted in town at the Post Office. > > > > I purchase task-specific sizes of cartons from U-Line. usually 50 > > at a time. Cover orders are sent in padded envelopes, again > > purchased specifically from U-Line for the task. > > > > The Post Office provides a delivery date on each Priority Mail > > receipt, and these ? so far ? have proved highly accurate. Priority > > mail will reach anywhere in the US within a maximum of three days. > > An exception ? an order to Turkey took -five- days! (:-) > > > > I will -not- use any other service. Fed-Ex is an awful organization, > IMO. > > > > 88 ! > > Rose - N7HKW > > ElecraftCovers at gmail.com > > 1-406-560-3738 > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to marklgoldberg at gmail.com From backhoeken at yahoo.com Wed Jan 2 14:38:06 2019 From: backhoeken at yahoo.com (Ken B) Date: Wed, 2 Jan 2019 19:38:06 +0000 (UTC) Subject: [Elecraft] OT: USPS mailing In-Reply-To: References: Message-ID: <799117975.13137641.1546457886702@mail.yahoo.com> I am completely satisifed with anything shipped from Elecraft.? Sent from Yahoo Mail on? -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Rose Sent: Wednesday, January 2, 2019 9:41 AM To: Elecraft Reflector Subject: [Elecraft] OT: USPS mailing I've been making Elecraft cases and covers for eleven years.? All of the hundreds I've made have been sent via USPS Priority Mail. To date, not a single one has gone astray ? a remarkable record. I live "in the country" and have no mail delivery, so all of my USPS business is transacted in town at the Post Office. I purchase task-specific sizes of cartons from U-Line. usually 50 at a time.? Cover orders are sent in padded envelopes, again purchased specifically from U-Line for the task. The Post Office provides a delivery date on each Priority Mail receipt, and these ? so far ? have proved highly accurate.? Priority mail will reach anywhere in the US within a maximum of three days. An exception ? an order to Turkey took -five- days! (:-) I will -not- use any other service.? Fed-Ex is an awful organization, IMO. 88 ! Rose - N7HKW ElecraftCovers at gmail.com 1-406-560-3738 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to gthornton at thorntonmostullaw.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to backhoeken at yahoo.com From donwilh at embarqmail.com Wed Jan 2 15:15:22 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 2 Jan 2019 15:15:22 -0500 Subject: [Elecraft] OT: USPS mailing In-Reply-To: <799117975.13137641.1546457886702@mail.yahoo.com> References: <799117975.13137641.1546457886702@mail.yahoo.com> Message-ID: Elecraft normally uses UPS except for small lightweight items - they have a corporate account with good rates. For small parts orders, I normally request First Class Mail or if it exceeds 13 Oz. USPS Priority Mail. Either one normally reaches me in 3 days or less. 73, Don W3FPR On 1/2/2019 2:38 PM, Ken B via Elecraft wrote: > I am completely satisifed with anything shipped from Elecraft. > > Sent from Yahoo Mail on From k1whs at metrocast.net Wed Jan 2 16:06:46 2019 From: k1whs at metrocast.net (David Olean) Date: Wed, 2 Jan 2019 21:06:46 +0000 Subject: [Elecraft] P3 parts falling off Message-ID: <91dfe2ad-18b8-61ce-7b2c-72b85c484f02@metrocast.net> I went up to my remote ham shack to take out the ham gear for the winter, and turn off the heat.? I had a K3 with P3 panadaptor there for my ten meter station, and when I started disconnecting things, I heard something rattling around inside the P3. (?)? When I got home and opened it up I found an RJ-11 receptacle rolling around inside the box. The whole assembly had fallen off the front panel PC board. I am not sure how this would happen. The thing is surface mount soldered to the board.? I think this connector is only used for testing.? I am not sure what to do at this point. My hands are a bit shaky to try to fix it myself.? Or maybe I just leave it alone? Dave K1WHS From edauer at law.du.edu Wed Jan 2 17:17:46 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Wed, 2 Jan 2019 22:17:46 +0000 Subject: [Elecraft] Mods Notices Message-ID: I learned in conversation with Support today that a number of modifications have been issued, and parts are available, since the time a few years ago when I first assembled the KPA500. I did not know about them until now. Maybe I wasn't paying attention - but what should I have been paying attention to? None of them appear on the "mods" page on the web site for the KPA, though I do see a couple (not all) for the K3. How do we stay current on these as they come along? Some, like the updates to the K3 when the K3s came out, are the subject of posts on the reflector. But I don't recall seeing anything for the KPA500 - or the KPA1500, for that matter. Help? Ted, KN1CBR From n8vz at qth.com Wed Jan 2 17:56:25 2019 From: n8vz at qth.com (Carl J. Denbow) Date: Wed, 2 Jan 2019 17:56:25 -0500 Subject: [Elecraft] Ideas for an FT8 Radio In-Reply-To: <18609602-1803-4570-916C-9AD36269BA27@gmail.com> References: <1768811326.10637320.1546118162298.ref@mail.yahoo.com> <1768811326.10637320.1546118162298@mail.yahoo.com> <54E40D59-C141-4CF1-A0B2-E7A82BF03DBF@gmail.com> <18609602-1803-4570-916C-9AD36269BA27@gmail.com> Message-ID: While it's legal to run maximum power on FT8, or any other weak signal mode, it's certainly not in the spirit of the weak signal mode ethos? Most weak-signal mode enthusiasts pride themselves on the worldwide contacts they can make with low wattage.? Many feel that 100 watts is QRO on these modes. Personally, I usually run about 35 watts, but I've had QSOs with stations in far-flung regions running power in the milliwatt range with a dipole up 20 feet.? That's the real attraction of these modes to many. And, until the advent of FT8, you heard very few stations running more than 100 watts on these modes.? FT8 seems to have attracted a whole different crowd.? Some of these, I think, view FT8 as a "the new RTTY" and operate according to the accepted operating procedures of that mode.? I view this trend as very unfortunate. 73, Carl ====================================== *Carl J?n Denbow, N8VZ* 17 Coventry Lane Athens, Ohio 45701-3718 carl at n8vz.com www.n8vz.com EM89wh IRLP 4533 Echolink 116070 PSK and JT65 Forever! ====================================== From kc4atu at hotmail.com Wed Jan 2 18:01:45 2019 From: kc4atu at hotmail.com (Bill Rowlett) Date: Wed, 2 Jan 2019 23:01:45 +0000 Subject: [Elecraft] Ideas for an FT8 Radio In-Reply-To: References: <1768811326.10637320.1546118162298.ref@mail.yahoo.com> <1768811326.10637320.1546118162298@mail.yahoo.com> <54E40D59-C141-4CF1-A0B2-E7A82BF03DBF@gmail.com> <18609602-1803-4570-916C-9AD36269BA27@gmail.com> Message-ID: Dito Carl, well said. I agree 100% Bill KC4IM > On Jan 2, 2019, at 5:56 PM, Carl J. Denbow wrote: > > While it's legal to run maximum power on FT8, or any other weak signal mode, it's certainly not in the spirit of the weak signal mode ethos Most weak-signal mode enthusiasts pride themselves on the worldwide contacts they can make with low wattage. Many feel that 100 watts is QRO on these modes. Personally, I usually run about 35 watts, but I've had QSOs with stations in far-flung regions running power in the milliwatt range with a dipole up 20 feet. That's the real attraction of these modes to many. And, until the advent of FT8, you heard very few stations running more than 100 watts on these modes. FT8 seems to have attracted a whole different crowd. Some of these, I think, view FT8 as a "the new RTTY" and operate according to the accepted operating procedures of that mode. I view this trend as very unfortunate. > > 73, > > Carl > > ====================================== > *Carl J?n Denbow, N8VZ* > 17 Coventry Lane Athens, Ohio 45701-3718 > carl at n8vz.com > www.n8vz.com > > EM89wh > IRLP 4533 Echolink 116070 > > PSK and JT65 Forever! > ====================================== > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to kc4atu at hotmail.com From donwilh at embarqmail.com Wed Jan 2 17:05:22 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 2 Jan 2019 17:05:22 -0500 Subject: [Elecraft] P3 parts falling off In-Reply-To: <91dfe2ad-18b8-61ce-7b2c-72b85c484f02@metrocast.net> References: <91dfe2ad-18b8-61ce-7b2c-72b85c484f02@metrocast.net> Message-ID: <0e5cafd0-7e20-bf57-adc3-d72d98c1d45a@embarqmail.com> David, That jack is used only for factory testing. Your P3 should work normally without it. Hang onto the jack and if you ever send the P3 to Elecraft for repair, include it and the P3 will come back with it installed. 73, Don W3FPR On 1/2/2019 4:06 PM, David Olean wrote: > I went up to my remote ham shack to take out the ham gear for the > winter, and turn off the heat.? I had a K3 with P3 panadaptor there for > my ten meter station, and when I started disconnecting things, I heard > something rattling around inside the P3. (?)? When I got home and opened > it up I found an RJ-11 receptacle rolling around inside the box. The > whole assembly had fallen off the front panel PC board. I am not sure > how this would happen. The thing is surface mount soldered to the > board.? I think this connector is only used for testing.? I am not sure > what to do at this point. My hands are a bit shaky to try to fix it > myself.? Or maybe I just leave it alone? > From jim at audiosystemsgroup.com Wed Jan 2 18:19:11 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Wed, 2 Jan 2019 15:19:11 -0800 Subject: [Elecraft] Ideas for an FT8 Radio In-Reply-To: References: <1768811326.10637320.1546118162298.ref@mail.yahoo.com> <1768811326.10637320.1546118162298@mail.yahoo.com> <54E40D59-C141-4CF1-A0B2-E7A82BF03DBF@gmail.com> <18609602-1803-4570-916C-9AD36269BA27@gmail.com> Message-ID: <1f409eb4-8fb4-586f-6da7-fecacc711042@audiosystemsgroup.com> On 1/2/2019 2:56 PM, Carl J. Denbow wrote: > While it's legal to run maximum power on FT8, or any other weak signal > mode, it's certainly not in the spirit of the weak signal mode ethos > Most weak-signal mode enthusiasts pride themselves on the worldwide > contacts they can make with low wattage. You are confusing "weak signal" with QRP. "Weak signal" means signals are weak thanks to the mode of propagation and/or because it's a difficult path. WSJT-X modes like FT8, JT65, and JT9 are designed for that sort of communications -- long distances on 160M (4,000 miles and up); E-skip, long distance tropo and moonbounce on 6M, and so on. These modes are also useful if the station on the other end has a lot of receive noise, and most of us do nowadays. The moderate power levels you are espousing ARE appropriate on the HF bands with decent antennas and moderate noise levels. BUT -- when I'm trying to work 6,000+ miles on 160M, I run legal limit into very good antennas, because that's a difficult path. AND -- even with that, I often get much weaker signal reports than I transmit, often in the range of -20 to -24, which means that I'm certainly not using too much power! Last night on 160M, I tried for most of an hour to work an SV2, who was 6,600 miles from my QTH near San Francisco. For most of that time his signal was weaker than -20. 73, Jim K9YC From frantz at pwpconsult.com Wed Jan 2 18:43:35 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Wed, 2 Jan 2019 15:43:35 -0800 Subject: [Elecraft] Ideas for an FT8 Radio In-Reply-To: Message-ID: I thought I would look through the high power QSOs in my log for Los Gatos, CA to find what I do, instead of what I think I do. I found that I use high power for: The Elecraft SSB net: I frequently need a relay to reach Chicago. DXpeditions: Minimizing the time for my QSO lets others make their QSOs Contests: Particularly when entering the contest to work DXCCs FT8: I have a number of Rx -24 DB contacts. My only 3W QSO has -17dB from @800W. At the other end of the power spectrum, I have a QSO with a V3 at 1.4W and 5W contacts around the world. (Many of these were back when there were sun spots.) All my contacts from New Hampshire were with 10W or less, most 5 or less. These contacts include a useful number of DXCCs. I do play QRP as well as QRO. I also admit that when I got my amp, I was a kid in a candy store. I used it, perhaps at times when I didn't strictly need it. It is obvious from this data that I clearly think that all's fair in love and DX. Also, I should take a careful look at my transmit antennas. I also act as if I believe that using enough power to make the QSO is a valid way for a ham to operate. I will close with the thought that working EME is certainly a weak signal mode, and that it frequently takes a kilowatt to play in that league. 73 Bill AE6JV On 1/2/19 at 2:56 PM, n8vz at qth.com (Carl J. Denbow) wrote: >While it's legal to run maximum power on FT8, or any other weak >signal mode, it's certainly not in the spirit of the weak >signal mode ethos? Most weak-signal mode enthusiasts pride >themselves on the worldwide contacts they can make with low >wattage.? Many feel that 100 watts is QRO on these modes. >Personally, I usually run about 35 watts, but I've had QSOs >with stations in far-flung regions running power in the >milliwatt range with a dipole up 20 feet.? That's the real >attraction of these modes to many. And, until the advent of >FT8, you heard very few stations running more than 100 watts on >these modes.? FT8 seems to have attracted a whole different >crowd.? Some of these, I think, view FT8 as a "the new RTTY" >and operate according to the accepted operating procedures of >that mode.? I view this trend as very unfortunate. ----------------------------------------------------------------------- Bill Frantz | I don't have high-speed | Periwinkle (408)356-8506 | internet. I have DSL. | 16345 Englewood Ave www.pwpconsult.com | | Los Gatos, CA 95032 From sashangus at yahoo.com Wed Jan 2 18:56:20 2019 From: sashangus at yahoo.com (Robert Brown) Date: Wed, 2 Jan 2019 18:56:20 -0500 Subject: [Elecraft] P3 parts falling off Message-ID: David: I experienced the same thing when I bought an otherwise good condition P3 used. Elecraft can provide you with the replacement part no. I?ve never gotten around to fixing mine (otherwise works great). Bob Brown, N1CVX Sent from my iPad From ed at w0yk.com Wed Jan 2 19:08:30 2019 From: ed at w0yk.com (ed at w0yk.com) Date: Wed, 2 Jan 2019 16:08:30 -0800 Subject: [Elecraft] Ideas for an FT8 Radio In-Reply-To: <1f409eb4-8fb4-586f-6da7-fecacc711042@audiosystemsgroup.com> References: <1768811326.10637320.1546118162298.ref@mail.yahoo.com> <1768811326.10637320.1546118162298@mail.yahoo.com> <54E40D59-C141-4CF1-A0B2-E7A82BF03DBF@gmail.com> <18609602-1803-4570-916C-9AD36269BA27@gmail.com> <1f409eb4-8fb4-586f-6da7-fecacc711042@audiosystemsgroup.com> Message-ID: <045f01d4a2f8$75e6dc00$61b49400$@w0yk.com> +1 Thanks for clarifying this common myth. Another common myth is that QRPers must use compromised antennas. Many times QRP and marginal antennas and marginal locations are common but its not a requirement. There are a number of QRP enthusiasts who use big antenna farms. The JT and FT modes simply allow another level of participants to operate because decoding is reliable at many times lower signal levels than CW and SSB. Power is only one of many factors that contribute to signal strength. If FT8 combined with one's QTH, antennas and path require more than QRP, even 1500 watts, so be it. The FCC got this right many decades ago when they set the amateur rule that we use only as much power as necessary for reliable communication ... up to a maximum of 1500 watts. Ed W0YK -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Jim Brown Sent: Wednesday, 02 January, 2019 15:19 To: elecraft at mailman.qth.net Subject: Re: [Elecraft] Ideas for an FT8 Radio On 1/2/2019 2:56 PM, Carl J. Denbow wrote: > While it's legal to run maximum power on FT8, or any other weak signal > mode, it's certainly not in the spirit of the weak signal mode ethos > Most weak-signal mode enthusiasts pride themselves on the worldwide > contacts they can make with low wattage. You are confusing "weak signal" with QRP. "Weak signal" means signals are weak thanks to the mode of propagation and/or because it's a difficult path. WSJT-X modes like FT8, JT65, and JT9 are designed for that sort of communications -- long distances on 160M (4,000 miles and up); E-skip, long distance tropo and moonbounce on 6M, and so on. These modes are also useful if the station on the other end has a lot of receive noise, and most of us do nowadays. The moderate power levels you are espousing ARE appropriate on the HF bands with decent antennas and moderate noise levels. BUT -- when I'm trying to work 6,000+ miles on 160M, I run legal limit into very good antennas, because that's a difficult path. AND -- even with that, I often get much weaker signal reports than I transmit, often in the range of -20 to -24, which means that I'm certainly not using too much power! Last night on 160M, I tried for most of an hour to work an SV2, who was 6,600 miles from my QTH near San Francisco. For most of that time his signal was weaker than -20. 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ed at w0yk.com From dave at nk7z.net Wed Jan 2 19:25:07 2019 From: dave at nk7z.net (Dave Cole (NK7Z)) Date: Wed, 2 Jan 2019 16:25:07 -0800 Subject: [Elecraft] P3 parts falling off In-Reply-To: References: Message-ID: <200a0f15-d25b-8a1b-7a97-57a1bba53658@nk7z.net> We now know "what" is falling off, the next question is why is a part dropping off? I must have missed that, can someone refresh my memory please? 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Contest ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 1/2/19 3:56 PM, Robert Brown via Elecraft wrote: > David: > > I experienced the same thing when I bought an otherwise good condition P3 used. Elecraft can provide you with the replacement part no. > > I?ve never gotten around to fixing mine (otherwise works great). > > Bob Brown, N1CVX > > Sent from my iPad > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to dave at nk7z.net > From jthorpe at liberty.edu Wed Jan 2 19:42:44 2019 From: jthorpe at liberty.edu (Thorpe, Jeffrey) Date: Thu, 3 Jan 2019 00:42:44 +0000 Subject: [Elecraft] KX3 and RPi DRAWS hat? Message-ID: <3B5FB43F-335F-4D9C-87D9-E6FAC0B2C076@liberty.edu> I?ve been looking at one of Northwest Digital Radio?s DRAWS hats with my KX3. However, it uses 2 DIN-6 connectors. Has anybody tried one of these? Looks like it would require cobbling. Jeff - KG7HDZ From n6cl at sbcglobal.net Wed Jan 2 19:50:59 2019 From: n6cl at sbcglobal.net (Joe Lynch) Date: Thu, 3 Jan 2019 00:50:59 +0000 (UTC) Subject: [Elecraft] KX3 and RPi DRAWS hat? In-Reply-To: <3B5FB43F-335F-4D9C-87D9-E6FAC0B2C076@liberty.edu> References: <3B5FB43F-335F-4D9C-87D9-E6FAC0B2C076@liberty.edu> Message-ID: <930525578.12144511.1546476659604@mail.yahoo.com> Me too, Jeff. I think it holds lots of promise for FT8. I have a steep learning curve, however. 73, Joe Lynch, N6CL On ?Wednesday?, ?January? ?2?, ?2019? ?07?:?46?:?18? ?PM? ?EST, Thorpe, Jeffrey wrote: I?ve been looking at one of Northwest Digital Radio?s DRAWS hats with my KX3. However, it uses 2 DIN-6 connectors. Has anybody tried one of these? Looks like it would require cobbling. Jeff - KG7HDZ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to n6cl at sbcglobal.net From tmyers1031 at sbcglobal.net Wed Jan 2 20:41:56 2019 From: tmyers1031 at sbcglobal.net (Terry) Date: Wed, 2 Jan 2019 19:41:56 -0600 Subject: [Elecraft] RPi logging software? Message-ID: <52327a9f-7370-7f61-2158-6f93e631ed02@sbcglobal.net> I have been trying to get CQRlog to run on RPi, no-joy.? Using Raspbian Stretch OS and would like to keep it.? CQRlog does not seem to like Debian OS.? This is my first venture into Linux OS so it may well be the Operator. Hope to get other Ham programs to run as well.? If you have CQRlog running on Raspbian, please share the process. Is there another logging Linux program that does work well under Stretch? I do have plenty of WIN machines around but that is not the way I want to go for this project. Thanks for the constructive help in advance. Regards, Terry, KQ5U From n0nb at n0nb.us Wed Jan 2 21:07:32 2019 From: n0nb at n0nb.us (Nate Bargmann) Date: Wed, 2 Jan 2019 20:07:32 -0600 Subject: [Elecraft] RPi logging software? In-Reply-To: <52327a9f-7370-7f61-2158-6f93e631ed02@sbcglobal.net> References: <52327a9f-7370-7f61-2158-6f93e631ed02@sbcglobal.net> Message-ID: <20190103020732.3vzt7payppdrfmxo@n0nb.us> * On 2019 02 Jan 19:53 -0600, Terry wrote: > I have been trying to get CQRlog to run on RPi, no-joy.? Using Raspbian > Stretch OS and would like to keep it.? CQRlog does not seem to like Debian > OS.? This is my first venture into Linux OS so it may well be the Operator. > Hope to get other Ham programs to run as well.? If you have CQRlog running > on Raspbian, please share the process. I see from its download page, that CQRlog is only for the RPi3. As far as I know, it is not in the Debian/Raspbian repositories. If your Pi is older, you may want to ask on the CQRlog forum: https://cqrlog.com/forum/4 and see if someone has built a version for the Pi 1 and 2 versions. > Is there another logging Linux program that does work well under > Stretch? There is the classic xlog which is in the repositories and klog which requires the Qt libraries. HTH, 73, Nate, N0NB -- "The optimist proclaims that we live in the best of all possible worlds. The pessimist fears this is true." Web: http://www.n0nb.us GPG key: D55A8819 GitHub: N0NB From nv4c.ian at gmail.com Wed Jan 2 21:09:32 2019 From: nv4c.ian at gmail.com (Ian Kahn) Date: Wed, 2 Jan 2019 21:09:32 -0500 Subject: [Elecraft] RPi logging software? In-Reply-To: <52327a9f-7370-7f61-2158-6f93e631ed02@sbcglobal.net> References: <52327a9f-7370-7f61-2158-6f93e631ed02@sbcglobal.net> Message-ID: Terry, The RPi uses an ARM processor, not an x86/x64 processor. Make sure there's a version of CQRLog compiled for that processor. 73 de, Ian, NV4C On Wed, Jan 2, 2019, 8:52 PM Terry I have been trying to get CQRlog to run on RPi, no-joy. Using Raspbian > Stretch OS and would like to keep it. CQRlog does not seem to like > Debian OS. This is my first venture into Linux OS so it may well be the > Operator. Hope to get other Ham programs to run as well. If you have > CQRlog running on Raspbian, please share the process. > > Is there another logging Linux program that does work well under Stretch? > > I do have plenty of WIN machines around but that is not the way I want > to go for this project. > > Thanks for the constructive help in advance. > > Regards, > > Terry, KQ5U > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nv4c.ian at gmail.com From neilz at techie.com Wed Jan 2 21:34:40 2019 From: neilz at techie.com (Neil Zampella) Date: Wed, 2 Jan 2019 21:34:40 -0500 Subject: [Elecraft] Ideas for an FT8 Radio In-Reply-To: References: <1768811326.10637320.1546118162298.ref@mail.yahoo.com> <1768811326.10637320.1546118162298@mail.yahoo.com> <54E40D59-C141-4CF1-A0B2-E7A82BF03DBF@gmail.com> <18609602-1803-4570-916C-9AD36269BA27@gmail.com> Message-ID: <2c659184-d690-5a85-3a7d-511faa5b160e@techie.com> Carl, you tell that to Joe Taylor, who himself has said he uses the power it takes to make the contact, especially on EME and Meteor Scatter. It is not a low power mode.? For some people using 500w from California results in a - 19 report from? Israel.??? That is a weak signal. You use what it takes to make the contact. Neil, KN3ILZ On 1/2/2019 5:56 PM, Carl J. Denbow wrote: > While it's legal to run maximum power on FT8, or any other weak signal > mode, it's certainly not in the spirit of the weak signal mode ethos? > Most weak-signal mode enthusiasts pride themselves on the worldwide > contacts they can make with low wattage.? Many feel that 100 watts is > QRO on these modes. Personally, I usually run about 35 watts, but I've > had QSOs with stations in far-flung regions running power in the > milliwatt range with a dipole up 20 feet. That's the real attraction > of these modes to many. And, until the advent of FT8, you heard very > few stations running more than 100 watts on these modes.? FT8 seems to > have attracted a whole different crowd.? Some of these, I think, view > FT8 as a "the new RTTY" and operate according to the accepted > operating procedures of that mode.? I view this trend as very > unfortunate. > > 73, > > Carl > > ====================================== > *Carl J?n Denbow, N8VZ* > 17 Coventry Lane Athens, Ohio 45701-3718 > carl at n8vz.com > www.n8vz.com > > EM89wh > IRLP 4533 Echolink 116070 > > PSK and JT65 Forever! > ====================================== > --- This email has been checked for viruses by AVG. https://www.avg.com From phystad at mac.com Wed Jan 2 22:07:35 2019 From: phystad at mac.com (Phil Hystad) Date: Wed, 2 Jan 2019 19:07:35 -0800 Subject: [Elecraft] Elecraft Web Storefront Problem Message-ID: It is a problem with me or do others have trouble ordering online. Actually, the problem is that the postage due calculation has got to be way off. I wanted to get the little MINI KX2 Ground Banana Plug for $7.95 and the postage due was $16 and change. Didn?t seem to matter how I selected things. This banana plug is small enough to be shipped in a regular 45 cent postage stamp. I can see extra charges for preparing that mailing but hopefully not more than double the price of the item I am hoping to buy. Does anyone else have this problem? 73, phil, K7PEH From matt.vk2rq at gmail.com Wed Jan 2 22:12:54 2019 From: matt.vk2rq at gmail.com (Matt Maguire) Date: Thu, 3 Jan 2019 03:12:54 +0000 Subject: [Elecraft] Elecraft Web Storefront Problem In-Reply-To: References: Message-ID: Email them as parts _at_ elecraft.com, and they'll help you. I needed some small parts shipped to Australia, and they arranged to do it in a cost-effective way. The postage quoted on the website is obviously based on some general rules and does not take the details into account. 73, Matt VK2RQ ?On 3/1/19, 2:08 pm, "elecraft-bounces at mailman.qth.net on behalf of Phil Hystad via Elecraft" wrote: It is a problem with me or do others have trouble ordering online. Actually, the problem is that the postage due calculation has got to be way off. I wanted to get the little MINI KX2 Ground Banana Plug for $7.95 and the postage due was $16 and change. Didn?t seem to matter how I selected things. This banana plug is small enough to be shipped in a regular 45 cent postage stamp. I can see extra charges for preparing that mailing but hopefully not more than double the price of the item I am hoping to buy. Does anyone else have this problem? 73, phil, K7PEH ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to matt.vk2rq at gmail.com From donwilh at embarqmail.com Wed Jan 2 22:19:37 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 2 Jan 2019 22:19:37 -0500 Subject: [Elecraft] Elecraft Web Storefront Problem In-Reply-To: References: Message-ID: <7b49f90e-0bfe-62ca-4b15-caf4414e4641@embarqmail.com> Phil, Did you select 1st class mail shipping, or USPS Priority Mail. Yes, UPS for even small items starts at $16. If you cannot select on the website, contact sales 831-763-4211 and order by phone. 73, Don W3FPR On 1/2/2019 10:07 PM, Phil Hystad via Elecraft wrote: > It is a problem with me or do others have trouble ordering online. Actually, the problem is that the postage due calculation has got to be way off. > > I wanted to get the little MINI KX2 Ground Banana Plug for $7.95 and the postage due was $16 and change. Didn?t seem to matter how I selected things. This banana plug is small enough to be shipped in a regular 45 cent postage stamp. I can see extra charges for preparing that mailing but hopefully not more than double the price of the item I am hoping to buy. > > Does anyone else have this problem? > > 73, phil, K7PEH > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com > From phystad at mac.com Wed Jan 2 22:42:26 2019 From: phystad at mac.com (Phil Hystad) Date: Wed, 2 Jan 2019 19:42:26 -0800 Subject: [Elecraft] Elecraft Web Storefront Problem In-Reply-To: <7b49f90e-0bfe-62ca-4b15-caf4414e4641@embarqmail.com> References: <7b49f90e-0bfe-62ca-4b15-caf4414e4641@embarqmail.com> Message-ID: <2B2123E2-5FAB-454F-99D2-8305D446314C@mac.com> Don, USPS Priority Mail is: $16.98 (this is what is selected) UPS Ground is: $19.03 UPS Next Day Air is: $73.68 I just shipped a few boxes by UPS ground and all of the boxes were bigger and heavier than the KX2 Ground Mini Banana Plug and those three shipments were all cheaper than the UPS Ground noted above. Plus two of those UPS shipments to Phoenix AZ from my QTH in Kirkland, WA were cheaper than the USPS Priority Mail. Yes, I will call tomorrow and order via phone. So far, I am not liking the new web site. 73, phil, K7PEH > On Jan 2, 2019, at 7:19 PM, Don Wilhelm wrote: > > Phil, > > Did you select 1st class mail shipping, or USPS Priority Mail. > Yes, UPS for even small items starts at $16. > > If you cannot select on the website, contact sales 831-763-4211 and order by phone. > > 73, > Don W3FPR > > On 1/2/2019 10:07 PM, Phil Hystad via Elecraft wrote: >> It is a problem with me or do others have trouble ordering online. Actually, the problem is that the postage due calculation has got to be way off. >> I wanted to get the little MINI KX2 Ground Banana Plug for $7.95 and the postage due was $16 and change. Didn?t seem to matter how I selected things. This banana plug is small enough to be shipped in a regular 45 cent postage stamp. I can see extra charges for preparing that mailing but hopefully not more than double the price of the item I am hoping to buy. >> Does anyone else have this problem? >> 73, phil, K7PEH >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donwilh at embarqmail.com From w1go at icloud.com Wed Jan 2 22:52:58 2019 From: w1go at icloud.com (W1GO (Joe)) Date: Wed, 2 Jan 2019 22:52:58 -0500 Subject: [Elecraft] Elecraft Web Storefront Problem In-Reply-To: References: Message-ID: <28F39CA5-8E44-4682-9875-DE00A2DD8840@icloud.com> I agree. I bought a small item on the ?old? website and the shipping to NY was about $4. I tried to purchase the same item on the new website and the lowest shipping was over $17 (for a $20+ item).; I didn?t buy it. I recently purchased a KXPD3 and the shipping was the same $17+. Same with an MH3 mic. I did some experimentation with a few small items and got the same $17+ as the lowest shipping. I questioned this and was told it wasn?t a mistake. In the case of the mic I was told the box size and weight were the reasons (?). Net result is that I have not purchased some items. Guess I?ll just have to wait and possibly consolidate in the future ... perhaps. Not sure why the change to the website impacted shipping rates so much. Joe W1GO > On Jan 2, 2019, at 22:07, Phil Hystad via Elecraft wrote: > > It is a problem with me or do others have trouble ordering online. Actually, the problem is that the postage due calculation has got to be way off. > > I wanted to get the little MINI KX2 Ground Banana Plug for $7.95 and the postage due was $16 and change. Didn?t seem to matter how I selected things. This banana plug is small enough to be shipped in a regular 45 cent postage stamp. I can see extra charges for preparing that mailing but hopefully not more than double the price of the item I am hoping to buy. > > Does anyone else have this problem? > > 73, phil, K7PEH > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w1go at icloud.com From xtr348165 at xtra.co.nz Wed Jan 2 23:05:16 2019 From: xtr348165 at xtra.co.nz (paulb) Date: Wed, 2 Jan 2019 21:05:16 -0700 (MST) Subject: [Elecraft] K3 minor parts Message-ID: <1546488316444-0.post@n2.nabble.com> Hi Folks HNY from ZL, Just a quick post about small minor parts for my K3. Now nearly 10 years old and has broken audio/rf knobs. No big deal been like this for a while. Checked today to replace....with shipping to ZL it's a lost cause. Guess this relates to inventory and stock control. Plan B is look for a near enough replacement. Be interested what others have managed to source. Reply off list no problem. cheers Paul zl1ajy -- Sent from: http://elecraft.365791.n2.nabble.com/ From donwilh at embarqmail.com Thu Jan 3 00:12:11 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Thu, 3 Jan 2019 00:12:11 -0500 Subject: [Elecraft] Elecraft Web Storefront Problem In-Reply-To: <2B2123E2-5FAB-454F-99D2-8305D446314C@mac.com> References: <7b49f90e-0bfe-62ca-4b15-caf4414e4641@embarqmail.com> <2B2123E2-5FAB-454F-99D2-8305D446314C@mac.com> Message-ID: Yes, I can believe that USPS Priority is $16.98. But if the weight is less than 13 oz (which should be true for your plug), it can go 1st class mail. Is that not a shipping choice? 73, Don W3FPR On 1/2/2019 10:42 PM, Phil Hystad wrote: > Don, > > USPS Priority Mail is: $16.98 (this is what is selected) > > UPS Ground is: $19.03 > > UPS Next Day Air is: $73.68 > From phystad at mac.com Thu Jan 3 00:35:20 2019 From: phystad at mac.com (Phil Hystad) Date: Wed, 2 Jan 2019 21:35:20 -0800 Subject: [Elecraft] Elecraft Web Storefront Problem In-Reply-To: References: <7b49f90e-0bfe-62ca-4b15-caf4414e4641@embarqmail.com> <2B2123E2-5FAB-454F-99D2-8305D446314C@mac.com> Message-ID: <47F079CA-09FF-49C8-96CE-CC13AFDD1CB9@mac.com> Those options I listed, USPS, UPS Ground, and UPS Next Day Air were all that were listed and available for shipping. I have bought small parts from Elecraft before, like back when a hardware fix or two were still being issued for the K3. These were shipped in heavy brown paper envelopes (small) and by regular US mail. This Banana Plug is ridiculously small and should not demand a shipping cost twice the cost of the plug. 73, phil > On Jan 2, 2019, at 9:12 PM, Don Wilhelm wrote: > > Yes, > > I can believe that USPS Priority is $16.98. > But if the weight is less than 13 oz (which should be true for your plug), it can go 1st class mail. > Is that not a shipping choice? > > 73, > Don W3FPR > > On 1/2/2019 10:42 PM, Phil Hystad wrote: >> Don, >> >> USPS Priority Mail is: $16.98 (this is what is selected) >> >> UPS Ground is: $19.03 >> >> UPS Next Day Air is: $73.68 >> > From bjahnke at gmail.com Thu Jan 3 02:20:21 2019 From: bjahnke at gmail.com (Bart Jahnke) Date: Thu, 3 Jan 2019 02:20:21 -0500 Subject: [Elecraft] Wanted: KXV3 transverter interface Message-ID: Folks, I just obtained a basic K3 / 10 that does not include the transverter interface. While I can obtain a new KXV3 B version, anyone out there have a used B or A version that they want to part with? Also, anyone have a spare KIO3B USB interface? 73 & HNY Bart W9JJ From vr2xmc at yahoo.com.hk Thu Jan 3 02:41:57 2019 From: vr2xmc at yahoo.com.hk (vr2xmc) Date: Thu, 3 Jan 2019 15:41:57 +0800 Subject: [Elecraft] Mods Notices In-Reply-To: References: Message-ID: <5E544D71-4ED2-4C58-A320-0AE037047DC2@yahoo.com.hk> A simple email to support with yr kpa500 SN, they will give u very good guidances ??? iPhone ?? > Dauer, Edward ? 2019?1?3? 06:17 ??? > > I learned in conversation with Support today that a number of modifications have been issued, and parts are available, since the time a few years ago when I first assembled the KPA500. I did not know about them until now. Maybe I wasn't paying attention - but what should I have been paying attention to? None of them appear on the "mods" page on the web site for the KPA, though I do see a couple (not all) for the K3. How do we stay current on these as they come along? Some, like the updates to the K3 when the K3s came out, are the subject of posts on the reflector. But I don't recall seeing anything for the KPA500 - or the KPA1500, for that matter. Help? > > Ted, KN1CBR > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to vr2xmc at yahoo.com.hk From rthorne at rthorne.net Thu Jan 3 06:34:58 2019 From: rthorne at rthorne.net (Richard Thorne) Date: Thu, 3 Jan 2019 05:34:58 -0600 Subject: [Elecraft] Elecraft Web Storefront Problem In-Reply-To: References: Message-ID: I ran into this problem a few weeks ago.? I was ordering the 4-40 thumbscrews so I could attach my KX2 to a desk stand. Click on quick order.? Then go a couple paragraphs down and you'll see 'Parts Order Here' in blue.? Click on that link and place your order.? The shipping charges should be accurate and reasonable.? I did a quick test and it calculated the shipping to be $5 I'm now kicking myself for not ordering an extra banana plug for my kx2 when I ordered the thumb screws. Rich - N5ZC On 1/2/2019 9:07 PM, Phil Hystad via Elecraft wrote: > It is a problem with me or do others have trouble ordering online. Actually, the problem is that the postage due calculation has got to be way off. > > I wanted to get the little MINI KX2 Ground Banana Plug for $7.95 and the postage due was $16 and change. Didn?t seem to matter how I selected things. This banana plug is small enough to be shipped in a regular 45 cent postage stamp. I can see extra charges for preparing that mailing but hopefully not more than double the price of the item I am hoping to buy. > > Does anyone else have this problem? > > 73, phil, K7PEH > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rthorne at rthorne.net From brian.waterworth at gmail.com Thu Jan 3 07:54:55 2019 From: brian.waterworth at gmail.com (Brian Waterworth) Date: Thu, 3 Jan 2019 07:54:55 -0500 Subject: [Elecraft] RPi logging software? In-Reply-To: References: <52327a9f-7370-7f61-2158-6f93e631ed02@sbcglobal.net> Message-ID: I have CQRlog running on a couple of RPI's. All of the RPIs I have CQRLog running on are indeed RPI 3's connected to my KX3. I was able to get CQRLog 2.2 to install on Jessie in 2017. But when CQRLog v2.3 came out, I was not able to install on Raspbian Jessie. Switched to Raspbian Stretch and back in business. The trick with installing CQRLog is to ensure its dependencies are loaded first. This is not well documented for those of us who are casual Linux ops. A great tip was provided in one of the CQRLog forums to use a program called gdebi (sudo apt-get install gdebi) to install the cqrlog_2.3.0-1_armhf.deb file. Gdebi resolves the dependencies for you and loads them prior to the install; a brilliant little utility as an alternative to dpkg. I would say that my biggest issues with the install of CQRLog were not with CQRLog itself, but with MySQL on which CQRLog depends. Once you resolve that dependency (hopefully gdebi will do that for you), the rest just worked. CQRLog integrates well with wsjtx, fldigi, and qrz.com. It has direct upload buttons to eQSL.cc and LOTW. Although, CQRLog doesn't play nice with the latest OpenSSL on Stretch. This nuisance thwarts your ability to upload an encrypted LOTW log file direct from CQRLog. You can still get CQRLog to do the heavy lifting of creating and encrypting an LOTW log file from those QSOs that you made since the last upload. After that, I have to use TQSL on the RPI to upload the file (allow duplicates), CQRLog produces, to LOTW. A minor inconvenience at this point that I am willing to live with. Looks like there is a CQRLog beta version in the works to succeed v2.3. The CQRLog forums had some chatter about this from last month and the beta is now available. This is great news. I will be watching and will install once it goes GA. regards, Brian VE3IBW From lee.buller at gmail.com Thu Jan 3 08:20:48 2019 From: lee.buller at gmail.com (Leroy Buller) Date: Thu, 3 Jan 2019 07:20:48 -0600 Subject: [Elecraft] K3 Standard internal Noise Message-ID: I am trying to trace down a noise on 40 meters, but it seems to follow the VFO. On the P3, the noise is a gradual jump that is 6 khz wide. After the vfo is not used for a while, the noise disappears. Anyone have a direction to travel? Only on 40 mtrs it seems. Lee From nr4c at widomaker.com Thu Jan 3 08:42:21 2019 From: nr4c at widomaker.com (Nr4c) Date: Thu, 3 Jan 2019 08:42:21 -0500 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: References: Message-ID: <9C4363C4-E308-4862-8A6F-81BE8A4038A4@widomaker.com> I?m all ears. I see it on other bands. What type of power supply are you using? Switcher? Linear? Brand and model? Sent from my iPhone ...nr4c. bill > On Jan 3, 2019, at 8:20 AM, Leroy Buller wrote: > > I am trying to trace down a noise on 40 meters, but it seems to follow the > VFO. On the P3, the noise is a gradual jump that is 6 khz wide. After the > vfo is not used for a while, the noise disappears. Anyone have a > direction to travel? Only on 40 mtrs it seems. > > Lee > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From nr4c at widomaker.com Thu Jan 3 08:47:47 2019 From: nr4c at widomaker.com (Nr4c) Date: Thu, 3 Jan 2019 08:47:47 -0500 Subject: [Elecraft] K3 minor parts In-Reply-To: <1546488316444-0.post@n2.nabble.com> References: <1546488316444-0.post@n2.nabble.com> Message-ID: Call Elecraft about the knobs. This is a common problem and they replace free. Sent from my iPhone ...nr4c. bill > On Jan 2, 2019, at 11:05 PM, paulb wrote: > > > Hi Folks > > HNY from ZL, > > Just a quick post about small minor parts for my K3. > Now nearly 10 years old and has broken audio/rf > knobs. No big deal been like this for a while. > > Checked today to replace....with shipping to ZL > it's a lost cause. Guess this relates to > inventory and stock control. > > Plan B is look for a near enough replacement. > > Be interested what others have managed to source. > > Reply off list no problem. > > cheers > > Paul > zl1ajy > > > > > > > > > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From raysills3 at verizon.net Thu Jan 3 08:44:58 2019 From: raysills3 at verizon.net (Raymond Sills) Date: Thu, 3 Jan 2019 08:44:58 -0500 Subject: [Elecraft] Postage Message-ID: <16813f5b915-2961-cd3@webjas-vae088.srv.aolmail.net> Hi Gang: Currently, a postage stamp for a 1 oz. letter is 50?... due to increase to 55? after Sunday January 27th, 2019. So, stock up on "forever stamps". :) 73 de Ray K2ULR KX3 #211 From kd4iz at frawg.org Thu Jan 3 10:12:54 2019 From: kd4iz at frawg.org (kd4iz at frawg.org) Date: Thu, 3 Jan 2019 10:12:54 -0500 Subject: [Elecraft] KX3 and RPi DRAWS hat? In-Reply-To: <930525578.12144511.1546476659604@mail.yahoo.com> References: <3B5FB43F-335F-4D9C-87D9-E6FAC0B2C076@liberty.edu> <930525578.12144511.1546476659604@mail.yahoo.com> Message-ID: <00b401d4a376$cde98a50$69bc9ef0$@frawg.org> Jeff and Joe, I am one of the DRAWS hat "early adopters". Yes, it will take some harness wiring but it was easy. The miniDIN6 cable wiring is pin to pin "IKYA standard". All that was needed was adapting the audio I/O wiring and either configuring flrig to key the radio model of choice or use the keying signal available on the miniDIN6 (they are wired to specific RPi GPIO pins). The flip side of the coin is that the implementation of the OS (Compass/Raspbian Stretch) and adapted software (including FT8 and JS8) is still being cobbled together and tested. I have Direwolf/Xastir APRS @1200 baud working reliably on all platforms (IC-7000, FT-817, and E KX3 with 2M card). 9600 baud APRS would be nigh on impossible with the KX3 (discriminator access). Digimodes with fldigi work fine with some tuning. Still working out some details for wsjt-x (but it does work). I am not a JS8 fan so you are on your own there. It is a true "swiss army knife" device - and like a swiss army knife, you can pretty much only use one blade at a time. I mounted the Pi and DRAWS in a SmartiPi Touch frame and adapted the case back with an 12V barrel connector, ON/OFF switch, and access port to the DIN and GPS SMA connector. Here are some photos of my "holiday project": https://www.dropbox.com/sh/4ayvgn1atzaihot/AAC8ElL148w9VjgfkyeODlAUa?dl=0 The keyboard you see is a wireless micro keyboard that came with my first RPi. The whole station using the KX3 or FT-817 fits in a Rigid "briefcase toolbox" or a medium sized Osprey daypack. By the way, the GPS is fast, accurate, and provides a PPS source for the RPi clock which is notoriously bad. Now the Pi tracks the Meinberg provided time on my main workstation here in the office. NW Digital wants to have their consumer ready unit - the OS Image, a custom metal case, and the second run of boards ready this month. It?s a fun project. KD4IZ Jack Spitznagel FM19oo -----Original Message----- From: Joe Lynch Sent: Wednesday, January 2, 2019 19:51 To: Thorpe, Jeffrey ; Subject: Re: [Elecraft] KX3 and RPi DRAWS hat? Me too, Jeff. I think it holds lots of promise for FT8. I have a steep learning curve, however. 73, Joe Lynch, N6CL On ?Wednesday?, ?January? ?2?, ?2019? ?07?:?46?:?18? ?PM? ?EST, Thorpe, Jeffrey wrote: I?ve been looking at one of Northwest Digital Radio?s DRAWS hats with my KX3. However, it uses 2 DIN-6 connectors. Has anybody tried one of these? Looks like it would require cobbling. Jeff - KG7HDZ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to n6cl at sbcglobal.net From k1whs at metrocast.net Thu Jan 3 11:33:19 2019 From: k1whs at metrocast.net (David Olean) Date: Thu, 3 Jan 2019 16:33:19 +0000 Subject: [Elecraft] P3 parts falling off In-Reply-To: <200a0f15-d25b-8a1b-7a97-57a1bba53658@nk7z.net> References: <200a0f15-d25b-8a1b-7a97-57a1bba53658@nk7z.net> Message-ID: Hello Dave, "Why?" is the big question. I have no idea why it fell off. There is nothing that sticks out to invite damage. That RJ-11 receptacle is hidden underneath the P3. There are six surface mount solder connections to the board, and there are two small metal inserts in the plastic housing that help attach it to the PC board as well.? I do transport the P3 up to the shack at some point, but I always wrap it in bubble wrap or a blanket.? When I disconnected the P3 from all the cables to remove it,? I was surprised to hear something rolling around inside. It was the RJ-11 jack. All six solder tabs look perfectly straight. It is as it just fell off! I would think that if something poked the connector from the outside hard enough to break it, then those small pins would all be bent.? My theory on what transpired? must therefore involve aliens from another galaxy near M-86 in Virgo. Dave K1WHS On 1/3/2019 12:25 AM, Dave Cole (NK7Z) wrote: > We now know "what" is falling off, the next question is why is a part > dropping off? > > I must have missed that, can someone refresh my memory please? > > 73s and thanks, > Dave (NK7Z) > https://www.nk7z.net > Award Manager, 30MDG Grid Contest > ARRL Technical Specialist > ARRL Volunteer Examiner > ARRL OOC for Oregon > > On 1/2/19 3:56 PM, Robert Brown via Elecraft wrote: >> David: >> >> I experienced the same thing when I bought an otherwise good >> condition P3 used.? Elecraft can provide you with the replacement >> part no. >> >> I?ve never gotten around to fixing mine (otherwise works great). >> >> Bob Brown, N1CVX >> >> Sent from my iPad >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to dave at nk7z.net >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k1whs at metrocast.net From huntinhmb at coastside.net Thu Jan 3 12:37:43 2019 From: huntinhmb at coastside.net (Brian Hunt) Date: Thu, 3 Jan 2019 09:37:43 -0800 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: References: Message-ID: I've seen that. Does putting your hand on top of the P3 change it any? Mine did. Anyway it seems to be related to the BNC cable to the K3. I put a new cable in and jiggled it some and it went away. If it comes back l'll build my own cable with quality connectors and double shielded cable. YMMV 73, Brian, K0DTJ > On Jan 3, 2019, at 05:20, Leroy Buller wrote: > > I am trying to trace down a noise on 40 meters, but it seems to follow the > VFO. On the P3, the noise is a gradual jump that is 6 khz wide. After the > vfo is not used for a while, the noise disappears. From c-hawley at illinois.edu Thu Jan 3 12:42:07 2019 From: c-hawley at illinois.edu (hawley, charles j jr) Date: Thu, 3 Jan 2019 17:42:07 +0000 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: References: , Message-ID: The coax cable supplied with the P3 at some period in time was known to be faulty. Chuck Jack KE9UW Sent from my iPhone, cjack > On Jan 3, 2019, at 11:38 AM, Brian Hunt wrote: > > I've seen that. Does putting your hand on top of the P3 change it any? Mine did. Anyway it seems to be related to the BNC cable to the K3. I put a new cable in and jiggled it some and it went away. If it comes back l'll build my own cable with quality connectors and double shielded cable. YMMV > > 73, > Brian, K0DTJ > >> On Jan 3, 2019, at 05:20, Leroy Buller wrote: >> >> I am trying to trace down a noise on 40 meters, but it seems to follow the >> VFO. On the P3, the noise is a gradual jump that is 6 khz wide. After the >> vfo is not used for a while, the noise disappears. > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to c-hawley at illinois.edu From kl7uw at acsalaska.net Thu Jan 3 12:55:19 2019 From: kl7uw at acsalaska.net (Edward R Cole) Date: Thu, 03 Jan 2019 08:55:19 -0900 Subject: [Elecraft] Ideas for an FT8 Radio Message-ID: <201901031755.x03HtLE3006103@mail40c28.carrierzone.com> I've been using JT since its advent in early 2000's (I began with JT44 in 2003 using my HB psk-31 computer interface). I only had 110w on 2m using a MOT repeater PA so lucky to get 80w to antennas. But I was using four 10-element yagis, which was considered minimum for CW eme in 1998 if using 600w. JT modes allowed me to make contacts with a 10-dB weaker signal. I was at about the bare minimum of ERP for doing eme back then. About 2007 I started running 600w with an 8877 powered by HVPS of an old Swan HF amp that ran 2500v at 400ma. About 2011 I upgraded to a 4kV 750ma PS to run 1500w, which produced a big signal using my array on JT65. It took 55w drive to reach that. Just finishing a new sspa from W6PQL that will run about 1200w that requires 2w drive and using a 50v PS. I installed a 30w 10-dB attenuator so my 20w 2m transverter could run full power. But the main issue is that one uses the RF power needed to make the contact. I understand that FT8 is less sensitive than JT65, about -24 vs -28 dB. I may try it on 6m where I have 1kW and two 7-element yagis (not quite yet QRV - rotator issues). 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: dubususa at gmail.com From dave at nk7z.net Thu Jan 3 13:02:41 2019 From: dave at nk7z.net (Dave Cole (NK7Z)) Date: Thu, 3 Jan 2019 10:02:41 -0800 Subject: [Elecraft] P3 parts falling off In-Reply-To: References: <200a0f15-d25b-8a1b-7a97-57a1bba53658@nk7z.net> Message-ID: <5fb40dea-72b0-7ee6-9fee-01568c5e2d80@nk7z.net> I was wondering as I think there have been two of these now... Thanks for the update! 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Contest ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 1/3/19 8:33 AM, David Olean wrote: > > Hello Dave, > > "Why?" is the big question. I have no idea why it fell off. There is > nothing that sticks out to invite damage. That RJ-11 receptacle is > hidden underneath the P3. There are six surface mount solder connections > to the board, and there are two small metal inserts in the plastic > housing that help attach it to the PC board as well.? I do transport the > P3 up to the shack at some point, but I always wrap it in bubble wrap or > a blanket.? When I disconnected the P3 from all the cables to remove > it,? I was surprised to hear something rolling around inside. It was the > RJ-11 jack. All six solder tabs look perfectly straight. It is as it > just fell off! I would think that if something poked the connector from > the outside hard enough to break it, then those small pins would all be > bent.? My theory on what transpired? must therefore involve aliens from > another galaxy near M-86 in Virgo. > > Dave K1WHS > > On 1/3/2019 12:25 AM, Dave Cole (NK7Z) wrote: >> We now know "what" is falling off, the next question is why is a part >> dropping off? >> >> I must have missed that, can someone refresh my memory please? >> >> 73s and thanks, >> Dave (NK7Z) >> https://www.nk7z.net >> Award Manager, 30MDG Grid Contest >> ARRL Technical Specialist >> ARRL Volunteer Examiner >> ARRL OOC for Oregon >> >> On 1/2/19 3:56 PM, Robert Brown via Elecraft wrote: >>> David: >>> >>> I experienced the same thing when I bought an otherwise good >>> condition P3 used.? Elecraft can provide you with the replacement >>> part no. >>> >>> I?ve never gotten around to fixing mine (otherwise works great). >>> >>> Bob Brown, N1CVX >>> >>> Sent from my iPad >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to dave at nk7z.net >>> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to k1whs at metrocast.net From neilz at techie.com Thu Jan 3 13:04:04 2019 From: neilz at techie.com (Neil Zampella) Date: Thu, 3 Jan 2019 13:04:04 -0500 Subject: [Elecraft] KX3 and RPi DRAWS hat? In-Reply-To: <3B5FB43F-335F-4D9C-87D9-E6FAC0B2C076@liberty.edu> References: <3B5FB43F-335F-4D9C-87D9-E6FAC0B2C076@liberty.edu> Message-ID: FWIW .. I just run the Raspbean .deb of WSJT-X v2.0, the KXUSB for CAT control,? and a cheap USB soundcard with my KX3.?? The hat does me no good, as I'd have to find an adapter cable to use the DIN connectors.?? The USB soundcard just cost me $9.00 or so. Neil, KN3ILZ On 1/2/2019 7:42 PM, Thorpe, Jeffrey wrote: > I?ve been looking at one of Northwest Digital Radio?s DRAWS hats with my KX3. However, it uses 2 DIN-6 connectors. Has anybody tried one of these? Looks like it would require cobbling. > > Jeff - KG7HDZ --- This email has been checked for viruses by AVG. https://www.avg.com From donovanf at starpower.net Thu Jan 3 12:56:22 2019 From: donovanf at starpower.net (donovanf at starpower.net) Date: Thu, 3 Jan 2019 12:56:22 -0500 (EST) Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: Message-ID: <1521428608.8874843.1546538182707.JavaMail.root@starpower.net> I own several P3s and all were supplied with cables that are very susceptible to external RFI because of their very poor quality BNC connectors. I replaced the cables and my P3s have never had an RFI problem again. The Elecraft supplied cables went in the trash bin. 73 Frank W3LPL ----- Original Message ----- From: "charles j jr hawley" To: "Brian Hunt" Cc: elecraft at mailman.qth.net Sent: Thursday, January 3, 2019 5:42:07 PM Subject: Re: [Elecraft] K3 Standard internal Noise The coax cable supplied with the P3 at some period in time was known to be faulty. Chuck Jack KE9UW Sent from my iPhone, cjack > On Jan 3, 2019, at 11:38 AM, Brian Hunt wrote: > > I've seen that. Does putting your hand on top of the P3 change it any? Mine did. Anyway it seems to be related to the BNC cable to the K3. I put a new cable in and jiggled it some and it went away. If it comes back l'll build my own cable with quality connectors and double shielded cable. YMMV > > 73, > Brian, K0DTJ > >> On Jan 3, 2019, at 05:20, Leroy Buller wrote: >> >> I am trying to trace down a noise on 40 meters, but it seems to follow the >> VFO. On the P3, the noise is a gradual jump that is 6 khz wide. After the >> vfo is not used for a while, the noise disappears. > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to c-hawley at illinois.edu ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to donovanf at starpower.net From jim at audiosystemsgroup.com Thu Jan 3 14:49:26 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Thu, 3 Jan 2019 11:49:26 -0800 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: <1521428608.8874843.1546538182707.JavaMail.root@starpower.net> References: <1521428608.8874843.1546538182707.JavaMail.root@starpower.net> Message-ID: <910fdc21-d108-bb6f-4953-85fd75063ae0@audiosystemsgroup.com> I've had the same issue here. 73, Jim K9YC On 1/3/2019 9:56 AM, donovanf at starpower.net wrote: > I own several P3s and all were supplied with cables that are very > susceptible to external RFI because of their very poor quality BNC > connectors. I replaced the cables and my P3s have never had an RFI > problem again. The Elecraft supplied cables went in the trash bin. From radiok4ia at gmail.com Thu Jan 3 14:53:15 2019 From: radiok4ia at gmail.com (Buck) Date: Thu, 3 Jan 2019 14:53:15 -0500 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: <910fdc21-d108-bb6f-4953-85fd75063ae0@audiosystemsgroup.com> References: <1521428608.8874843.1546538182707.JavaMail.root@starpower.net> <910fdc21-d108-bb6f-4953-85fd75063ae0@audiosystemsgroup.com> Message-ID: <2f1462f9-6220-4a17-d653-3e374e1d079b@Gmail.com> Where did you find "quality" cables? Buck, k4ia Honor Roll 8BDXCC EasyWayHamBooks.com On 1/3/2019 2:49 PM, Jim Brown wrote: > I've had the same issue here. > > 73, Jim K9YC > > On 1/3/2019 9:56 AM, donovanf at starpower.net wrote: >> I own several P3s and all were supplied with cables that are very >> susceptible to external RFI because of their very poor quality BNC >> connectors. I replaced the cables and my P3s have never had an RFI >> problem again. The Elecraft supplied cables went in the trash bin. > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to radiok4ia at gmail.com From elecraftcovers at gmail.com Thu Jan 3 15:01:41 2019 From: elecraftcovers at gmail.com (Rose) Date: Thu, 3 Jan 2019 13:01:41 -0700 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: <2f1462f9-6220-4a17-d653-3e374e1d079b@Gmail.com> References: <1521428608.8874843.1546538182707.JavaMail.root@starpower.net> <910fdc21-d108-bb6f-4953-85fd75063ae0@audiosystemsgroup.com> <2f1462f9-6220-4a17-d653-3e374e1d079b@Gmail.com> Message-ID: Google "Pasternak".... (I think) On Thu, Jan 3, 2019, 12:58 Buck Where did you find "quality" cables? > > Buck, k4ia > Honor Roll > 8BDXCC > EasyWayHamBooks.com > > On 1/3/2019 2:49 PM, Jim Brown wrote: > > I've had the same issue here. > > > > 73, Jim K9YC > > > > On 1/3/2019 9:56 AM, donovanf at starpower.net wrote: > >> I own several P3s and all were supplied with cables that are very > >> susceptible to external RFI because of their very poor quality BNC > >> connectors. I replaced the cables and my P3s have never had an RFI > >> problem again. The Elecraft supplied cables went in the trash bin. > > > > > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to radiok4ia at gmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to elecraftcovers at gmail.com > From mbower at bbunch.org Thu Jan 3 15:09:55 2019 From: mbower at bbunch.org (Michael Bower) Date: Thu, 3 Jan 2019 15:09:55 -0500 Subject: [Elecraft] Suggested prices? Message-ID: Hi, gang, We are in the process of downsizing for a future (not scheduled). Can anyone give me suggestions for prices on the below rigs if I decide to sell them instead of moving them? I am the original owner and builder of all three rigs. I am very careful in building but I have also had these rigs checked by someone with a LOT more experience than me. 1) 2-band K1 with: Internal battery Internal antenna tuner stand. 2) 2-band KX1 with: unbuilt internal antenna tuner. 3) K2 with: SSB module Internal battery Unbuilt antenna tuner. Thanks in advance. Michael N4NMR Ashburn VA From rmcgraw at blomand.net Thu Jan 3 15:22:53 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Thu, 3 Jan 2019 14:22:53 -0600 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: <2f1462f9-6220-4a17-d653-3e374e1d079b@Gmail.com> References: <1521428608.8874843.1546538182707.JavaMail.root@starpower.net> <910fdc21-d108-bb6f-4953-85fd75063ae0@audiosystemsgroup.com> <2f1462f9-6220-4a17-d653-3e374e1d079b@Gmail.com> Message-ID: <43f03218-0300-61c7-771d-c20c642975f6@blomand.net> DX Engineering has the following: https://www.dxengineering.com/parts/dxe-8xdb002 73 Bob, K4TAX On 1/3/2019 1:53 PM, Buck wrote: > Where did you find "quality" cables? > > Buck, k4ia > Honor Roll > 8BDXCC > EasyWayHamBooks.com > From donwilh at embarqmail.com Thu Jan 3 16:01:58 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Thu, 3 Jan 2019 16:01:58 -0500 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: <43f03218-0300-61c7-771d-c20c642975f6@blomand.net> References: <1521428608.8874843.1546538182707.JavaMail.root@starpower.net> <910fdc21-d108-bb6f-4953-85fd75063ae0@audiosystemsgroup.com> <2f1462f9-6220-4a17-d653-3e374e1d079b@Gmail.com> <43f03218-0300-61c7-771d-c20c642975f6@blomand.net> Message-ID: The quality of the coax is usually good, but it is the connectors that give trouble. If you cut off the connectors and use Amphenol connectors you will usually have a 'quality' cable. 73, Don W3FPR On 1/3/2019 3:22 PM, Bob McGraw K4TAX wrote: > DX Engineering has the following: > > https://www.dxengineering.com/parts/dxe-8xdb002 > > 73 > > Bob, K4TAX > > > > On 1/3/2019 1:53 PM, Buck wrote: >> Where did you find "quality" cables? From rmcgraw at blomand.net Thu Jan 3 16:29:52 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Thu, 3 Jan 2019 15:29:52 -0600 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: References: <1521428608.8874843.1546538182707.JavaMail.root@starpower.net> <910fdc21-d108-bb6f-4953-85fd75063ae0@audiosystemsgroup.com> <2f1462f9-6220-4a17-d653-3e374e1d079b@Gmail.com> <43f03218-0300-61c7-771d-c20c642975f6@blomand.net> Message-ID: That's why I say "in most installations, more connectors usually equal more problems".?? Mechanical-electro connectors are the weak link in most all systems. I've never burned any coax, but I sure have fried a few connectors to the point of having them flash over internally. With low level signals, oxidation of contacts restrict or prevent the flow of current.? For that reason, it is good practice to "exercise" connectors to provide wiping action of the contacts. And then there are those "look good" connectors found at many hamfests.? Buyer beware, they aren't usually as they appear but simply "good looking" not necessarily "good performing".? Stick with major known brands. 73 Bob, K4TAX On 1/3/2019 3:01 PM, Don Wilhelm wrote: > The quality of the coax is usually good, but it is the connectors that > give trouble.? If you cut off the connectors and use Amphenol > connectors you will usually have a 'quality' cable. > > 73, > Don W3FPR > > On 1/3/2019 3:22 PM, Bob McGraw K4TAX wrote: >> DX Engineering has the following: >> >> https://www.dxengineering.com/parts/dxe-8xdb002 >> >> 73 >> >> Bob, K4TAX >> >> >> >> On 1/3/2019 1:53 PM, Buck wrote: >>> Where did you find "quality" cables? > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From KY5G at montac.com Thu Jan 3 16:09:12 2019 From: KY5G at montac.com (Clay Autery) Date: Thu, 3 Jan 2019 15:09:12 -0600 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: References: <1521428608.8874843.1546538182707.JavaMail.root@starpower.net> <910fdc21-d108-bb6f-4953-85fd75063ae0@audiosystemsgroup.com> <2f1462f9-6220-4a17-d653-3e374e1d079b@Gmail.com> Message-ID: Better yet...? learn to make your own using Times Microwave materials or other quality cable stock and connectors. ______________________ Clay Autery, KY5G (318) 518-1389 On 03-Jan-19 14:01, Rose wrote: > Google "Pasternak".... (I think) > > On Thu, Jan 3, 2019, 12:58 Buck >> Where did you find "quality" cables? >> >> Buck, k4ia >> Honor Roll >> 8BDXCC >> EasyWayHamBooks.com >> >> On 1/3/2019 2:49 PM, Jim Brown wrote: >>> I've had the same issue here. >>> >>> 73, Jim K9YC >>> >>> On 1/3/2019 9:56 AM, donovanf at starpower.net wrote: >>>> I own several P3s and all were supplied with cables that are very >>>> susceptible to external RFI because of their very poor quality BNC >>>> connectors. I replaced the cables and my P3s have never had an RFI >>>> problem again. The Elecraft supplied cables went in the trash bin. >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to radiok4ia at gmail.com >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to elecraftcovers at gmail.com >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to ky5g at montac.com From K2TK at ptd.net Thu Jan 3 16:59:49 2019 From: K2TK at ptd.net (Bob) Date: Thu, 3 Jan 2019 16:59:49 -0500 Subject: [Elecraft] Elecraft Web Storefront Problem In-Reply-To: References: <7b49f90e-0bfe-62ca-4b15-caf4414e4641@embarqmail.com> <2B2123E2-5FAB-454F-99D2-8305D446314C@mac.com> Message-ID: <42ea1fa3-6165-6aaf-fb35-3aceebe63a19@ptd.net> And what is wrong with using Flat Rate Priority services? For a miniplug a small Flat Rate box is $7.20 or a Flat Rate Envelope is $6.70. Those are retail prices and there are discounts even for commercial mailers. Agree that 1st class mail may be even better at times. Priority Mail does have free boxes and envelopes to factor in. I have walked away from making a purchase when only high priced UPS was available for delivery. I purchased a KPA1500 almost as soon as available and got the free shipping. My request was for mail shipping. To Elecraft's credit they honored my request. Three days cross country rather than five "working" days with UPS. I have a POB and admit to being firmly in the USPS camp 73, Bob K2TK ex KN2TKR (1956) & K2TKR On 1/3/2019 12:12 AM, Don Wilhelm wrote: > Yes, > > I can believe that USPS Priority is $16.98. > But if the weight is less than 13 oz (which should be true for your plug), it > can go 1st class mail. > Is that not a shipping choice? > > 73, > Don W3FPR > > On 1/2/2019 10:42 PM, Phil Hystad wrote: >> Don, >> >> USPS Priority Mail is:? $16.98?? (this is what is selected) >> >> UPS Ground is:? $19.03 >> >> UPS Next Day Air is:? $73.68 >> From k2ud at roadrunner.com Thu Jan 3 17:11:10 2019 From: k2ud at roadrunner.com (k2ud at roadrunner.com) Date: Thu, 3 Jan 2019 17:11:10 -0500 Subject: [Elecraft] Suggested prices? In-Reply-To: Message-ID: <20190103221110.OSW29.180284.root@dnvrco-web13> The K1 and KX1 are tough ones as they are unobtanium now, you may be surprised what they may bring. I forgot what I paid for mine, but I wouldn't by shy asking 75% of the original price for the rig and tuner. Now if you only had the paddle! 72 Howard Kraus, K2UD ---- Michael Bower wrote: > Hi, gang, > > We are in the process of downsizing for a future (not scheduled). Can > anyone give me suggestions for prices on the below rigs if I decide to sell > them instead of moving them? I am the original owner and builder of all > three rigs. I am very careful in building but I have also had these rigs > checked by someone with a LOT more experience than me. > > 1) 2-band K1 with: > > Internal battery > Internal antenna tuner > stand. > > 2) 2-band KX1 with: > > unbuilt internal antenna tuner. > > 3) K2 with: > > SSB module > Internal battery > Unbuilt antenna tuner. > > Thanks in advance. > > Michael N4NMR > Ashburn VA > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k2ud at roadrunner.com From djwilcox01 at gmail.com Thu Jan 3 17:23:01 2019 From: djwilcox01 at gmail.com (djwilcox01 at gmail.com) Date: Thu, 3 Jan 2019 17:23:01 -0500 Subject: [Elecraft] Elecraft Web Storefront Problem In-Reply-To: <42ea1fa3-6165-6aaf-fb35-3aceebe63a19@ptd.net> References: <7b49f90e-0bfe-62ca-4b15-caf4414e4641@embarqmail.com> <2B2123E2-5FAB-454F-99D2-8305D446314C@mac.com> <42ea1fa3-6165-6aaf-fb35-3aceebe63a19@ptd.net> Message-ID: <2B8E3699-1912-4B2F-B847-F28C785E3CF1@gmail.com> I think you guys forget the labor issue. I?m sure that a quality company like Elecraft pay their employees a decent wage with benefits. It takes time to package things and check the records for shipping and do it right the first time. Time costs money and time is money. I?m not complaining but I recognize that companies have to pay a decent wage to have great employees there to do a good job. I think even MFJ has a minimum of $12 shipping and that held me off until the next ham fest for certain items. Some of the larger companies have an automated shipping system that hardly a person touches ever the package. But you?ve got to be in the mega product and megabuck arena to have that kind of equipment. And if you have a time you can call the company direct and talk with a service rep and they might cut you a deal. I have done that a few times also David J. Wilcox K8WPE?s iPhone > On Jan 3, 2019, at 4:59 PM, Bob via Elecraft wrote: > > And what is wrong with using Flat Rate Priority services? > > For a miniplug a small Flat Rate box is $7.20 or a Flat Rate Envelope is $6.70. Those are retail prices and there are discounts even for commercial mailers. > > Agree that 1st class mail may be even better at times. Priority Mail does have free boxes and envelopes to factor in. > > I have walked away from making a purchase when only high priced UPS was available for delivery. > > I purchased a KPA1500 almost as soon as available and got the free shipping. My request was for mail shipping. To Elecraft's credit they honored my request. Three days cross country rather than five "working" days with UPS. I have a POB and admit to being firmly in the USPS camp > > 73, > Bob > K2TK ex KN2TKR (1956) & K2TKR > > >> On 1/3/2019 12:12 AM, Don Wilhelm wrote: >> Yes, >> I can believe that USPS Priority is $16.98. >> But if the weight is less than 13 oz (which should be true for your plug), it can go 1st class mail. >> Is that not a shipping choice? >> 73, >> Don W3FPR >>> On 1/2/2019 10:42 PM, Phil Hystad wrote: >>> Don, >>> >>> USPS Priority Mail is: $16.98 (this is what is selected) >>> >>> UPS Ground is: $19.03 >>> >>> UPS Next Day Air is: $73.68 >>> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to djwilcox01 at gmail.com From jim at audiosystemsgroup.com Thu Jan 3 17:31:19 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Thu, 3 Jan 2019 14:31:19 -0800 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: References: <1521428608.8874843.1546538182707.JavaMail.root@starpower.net> <910fdc21-d108-bb6f-4953-85fd75063ae0@audiosystemsgroup.com> <2f1462f9-6220-4a17-d653-3e374e1d079b@Gmail.com> <43f03218-0300-61c7-771d-c20c642975f6@blomand.net> Message-ID: <69543446-59cd-6df7-a995-bd70d760bce5@audiosystemsgroup.com> While there's a lot of coax around with poor quality shields, cheap connectors, and poorly installed connectors, cause FAR more problems. My rules are to NEVER play cheap with connectors and adapters, to ALWAYS look first at connectors (and adapters), and to build my own cables when possible. I've always had a strong suspicion that someone at Elecraft was playing cheap when the vendor for those cables was chosen. Poor quality coax shields will show up as excessive coupling of shield current to the inside of the coax, degrading isolation between antennas and increasing RX noise. 73, Jim K9YC On 1/3/2019 1:29 PM, Bob McGraw K4TAX wrote: > That's why I say "in most installations, more connectors usually equal > more problems".?? Mechanical-electro connectors are the weak link in > most all systems. From djwilcox01 at gmail.com Thu Jan 3 17:41:35 2019 From: djwilcox01 at gmail.com (djwilcox01 at gmail.com) Date: Thu, 3 Jan 2019 17:41:35 -0500 Subject: [Elecraft] Suggested prices? In-Reply-To: <20190103221110.OSW29.180284.root@dnvrco-web13> References: <20190103221110.OSW29.180284.root@dnvrco-web13> Message-ID: <85624811-E2CC-4D04-BBA1-28DB5D2B7895@gmail.com> Really, it?s whatever the market will bear. If you follow eBay for certain items you will get an idea of what they are going for there. There are many sites you can just put a price on it with your description and if no one buys at that price you are out nothing. I think QRZ will work that way. Or so you can just put a minimum price on it on eBay and if no one comes up to that price it doesn?t sell. There are costs to doing this but it does work. Also if you were keeping the items but want your relatives to have a better way of selling them when the time comes there are many companies that auction off ham radio equipment for a fee and they will buy the whole shack for one price or piece out things that are of higher value. Just start looking around. I know in some of the ham radio magazines there are estate sellers that advertise regularly and have a good reputation. There is one in Electric Radio Magazine that has been in business for many years. A query to them might even give you a good idea of a value since that is what they do. In our area our local radio club (cherryland amateur radio club ) will sell items from an estate. We have a few gentlemen that do this and spend a lot of time researching the value of each item, and packaging and shipping it to the seller if necessary. We split it 50-50 with the heirs of the estate, usually the widow. David J. Wilcox K8WPE?s iPhone > On Jan 3, 2019, at 5:11 PM, wrote: > > The K1 and KX1 are tough ones as they are unobtanium now, you may be surprised what they may bring. > > I forgot what I paid for mine, but I wouldn't by shy asking 75% of the original price for the rig and tuner. Now if you only had the paddle! > > 72 > > Howard Kraus, K2UD > > > ---- Michael Bower wrote: >> Hi, gang, >> >> We are in the process of downsizing for a future (not scheduled). Can >> anyone give me suggestions for prices on the below rigs if I decide to sell >> them instead of moving them? I am the original owner and builder of all >> three rigs. I am very careful in building but I have also had these rigs >> checked by someone with a LOT more experience than me. >> >> 1) 2-band K1 with: >> >> Internal battery >> Internal antenna tuner >> stand. >> >> 2) 2-band KX1 with: >> >> unbuilt internal antenna tuner. >> >> 3) K2 with: >> >> SSB module >> Internal battery >> Unbuilt antenna tuner. >> >> Thanks in advance. >> >> Michael N4NMR >> Ashburn VA >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to k2ud at roadrunner.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to djwilcox01 at gmail.com From rv6amark at yahoo.com Thu Jan 3 17:35:01 2019 From: rv6amark at yahoo.com (rv6amark) Date: Thu, 03 Jan 2019 14:35:01 -0800 Subject: [Elecraft] P3 parts falling off Message-ID: Re: "It?is as it just fell off!" It probably did.? It is likely the surface mount? joints were solder starved during original board processing.? They can sometimes make surprisingly? good electrical contact, at least in low current applications. Without a careful close examination with a good light and magnifying glass, it is all just guessing. Mark KE6BB null From donwilh at embarqmail.com Thu Jan 3 19:25:57 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Thu, 3 Jan 2019 19:25:57 -0500 Subject: [Elecraft] Suggested prices? In-Reply-To: <85624811-E2CC-4D04-BBA1-28DB5D2B7895@gmail.com> References: <20190103221110.OSW29.180284.root@dnvrco-web13> <85624811-E2CC-4D04-BBA1-28DB5D2B7895@gmail.com> Message-ID: <795a73d1-31c2-c54b-b110-a2e353bb8996@embarqmail.com> David, While you quote a 50-50 split with the estate, most individual hams will do that for a greater share to the survivors - giving all but the expenses incurred to the survivors. Yes, it is a lot of work, but "hams helping hams" predominates, and as long as expenses are covered, many hams are willing to give their time and effort to the family of an SK for no profit. I trust the ham who has volunteered to evaluate my ham gear at my demise will not want a 50-50 deal. However, if there is no personal relationship between the SK's family and the person or group setting the value and selling the gear is a fair equation. 73, Don W3FPR On 1/3/2019 5:41 PM, djwilcox01 at gmail.com wrote: > Really, it?s whatever the market will bear. If you follow eBay for certain items you will get an idea of what they are going for there. > > There are many sites you can just put a price on it with your description and if no one buys at that price you are out nothing. I think QRZ will work that way. > > Or so you can just put a minimum price on it on eBay and if no one comes up to that price it doesn?t sell. There are costs to doing this but it does work. > > Also if you were keeping the items but want your relatives to have a better way of selling them when the time comes there are many companies that auction off ham radio equipment for a fee and they will buy the whole shack for one price or piece out things that are of higher value. Just start looking around. I know in some of the ham radio magazines there are estate sellers that advertise regularly and have a good reputation. There is one in Electric Radio Magazine that has been in business for many years. A query to them might even give you a good idea of a value since that is what they do. > > In our area our local radio club (cherryland amateur radio club ) will sell items from an estate. We have a few gentlemen that do this and spend a lot of time researching the value of each item, and packaging and shipping it to the seller if necessary. We split it 50-50 with the heirs of the estate, usually the widow. > > David J. Wilcox K8WPE?s iPhone > >> On Jan 3, 2019, at 5:11 PM, wrote: >> >> The K1 and KX1 are tough ones as they are unobtanium now, you may be surprised what they may bring. >> >> I forgot what I paid for mine, but I wouldn't by shy asking 75% of the original price for the rig and tuner. Now if you only had the paddle! >> >> 72 >> >> Howard Kraus, K2UD >> >> >> ---- Michael Bower wrote: >>> Hi, gang, >>> >>> We are in the process of downsizing for a future (not scheduled). Can >>> anyone give me suggestions for prices on the below rigs if I decide to sell >>> them instead of moving them? I am the original owner and builder of all >>> three rigs. I am very careful in building but I have also had these rigs >>> checked by someone with a LOT more experience than me. >>> >>> 1) 2-band K1 with: >>> >>> Internal battery >>> Internal antenna tuner >>> stand. >>> >>> 2) 2-band KX1 with: >>> >>> unbuilt internal antenna tuner. >>> >>> 3) K2 with: >>> >>> SSB module >>> Internal battery >>> Unbuilt antenna tuner. >>> >>> Thanks in advance. >>> >>> Michael N4NMR >>> Ashburn VA >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to k2ud at roadrunner.com >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to djwilcox01 at gmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com > From k9ma at sdellington.us Thu Jan 3 19:49:46 2019 From: k9ma at sdellington.us (K9MA) Date: Thu, 3 Jan 2019 18:49:46 -0600 Subject: [Elecraft] Suggested prices? In-Reply-To: <795a73d1-31c2-c54b-b110-a2e353bb8996@embarqmail.com> References: <20190103221110.OSW29.180284.root@dnvrco-web13> <85624811-E2CC-4D04-BBA1-28DB5D2B7895@gmail.com> <795a73d1-31c2-c54b-b110-a2e353bb8996@embarqmail.com> Message-ID: On 1/3/2019 18:25, Don Wilhelm wrote: > While you quote a 50-50 split with the estate, most individual hams > will do that for a greater share to the survivors - giving all but the > expenses incurred to the survivors. > > Yes, it is a lot of work, but "hams helping hams" predominates, and as > long as expenses are covered, many hams are willing to give their time > and effort to the family of an SK for no profit. I've been doing just that lately for the widow of a SK friend. It's a lot of work, but it's what we do. He would have done the same for me. 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us From slrowe at wisc.edu Thu Jan 3 19:54:32 2019 From: slrowe at wisc.edu (SAMUEL L ROWE) Date: Fri, 4 Jan 2019 00:54:32 +0000 Subject: [Elecraft] Suggested prices? In-Reply-To: References: <20190103221110.OSW29.180284.root@dnvrco-web13> <85624811-E2CC-4D04-BBA1-28DB5D2B7895@gmail.com> <795a73d1-31c2-c54b-b110-a2e353bb8996@embarqmail.com>, Message-ID: I am sure he would have. No doubt whatsoever. Sam, KG9NG ________________________________ From: elecraft-bounces at mailman.qth.net on behalf of K9MA Sent: Thursday, January 3, 2019 6:49 PM To: elecraft at mailman.qth.net Subject: Re: [Elecraft] Suggested prices? On 1/3/2019 18:25, Don Wilhelm wrote: > While you quote a 50-50 split with the estate, most individual hams > will do that for a greater share to the survivors - giving all but the > expenses incurred to the survivors. > > Yes, it is a lot of work, but "hams helping hams" predominates, and as > long as expenses are covered, many hams are willing to give their time > and effort to the family of an SK for no profit. I've been doing just that lately for the widow of a SK friend. It's a lot of work, but it's what we do. He would have done the same for me. 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to kg9ng at arrl.net From jim at audiosystemsgroup.com Thu Jan 3 20:17:22 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Thu, 3 Jan 2019 17:17:22 -0800 Subject: [Elecraft] Suggested prices? In-Reply-To: <795a73d1-31c2-c54b-b110-a2e353bb8996@embarqmail.com> References: <20190103221110.OSW29.180284.root@dnvrco-web13> <85624811-E2CC-4D04-BBA1-28DB5D2B7895@gmail.com> <795a73d1-31c2-c54b-b110-a2e353bb8996@embarqmail.com> Message-ID: On 1/3/2019 4:25 PM, Don Wilhelm wrote: > While you quote a 50-50 split with the estate, most individual hams > will do that for a greater share to the survivors - giving all but the > expenses incurred to the survivors. When I helped a neighbor ham's widow dispose of his stuff about ten years ago, she got EVERYTHING except what I had to pay for shipping. I did all the packing. Buyers picked up the antennas and power amps. I bought all of the hard line. Ditto for a few years ago when a neighbor ham moved out of his house and moved onto a sailboat! In fact, with the widow, I categorized his huge junkbox, coax, hardline, and antennas. I coordinated more than dozen or so of his friends to take down his antennas and his towers. At least three guys did the climbing, with lots of help on the ground. And when we had sold as much as we could, several of us helped her drag what was left to several ham swap meets. I took a bunch of the stuff I wanted, and paid her what anyone else would have paid for it. This is the ham radio that I grew up in, and I hope my XYL be treated that way too. 73, Jim K9YC From rocketnj at gmail.com Thu Jan 3 20:40:14 2019 From: rocketnj at gmail.com (Dave) Date: Thu, 3 Jan 2019 20:40:14 -0500 Subject: [Elecraft] Suggested prices? In-Reply-To: References: <20190103221110.OSW29.180284.root@dnvrco-web13> <85624811-E2CC-4D04-BBA1-28DB5D2B7895@gmail.com> <795a73d1-31c2-c54b-b110-a2e353bb8996@embarqmail.com> Message-ID: Jim I am sure the widows of the hams you helped appreciate the effort. Great job! Dave wo2x Sent from my waxed string and tin cans. > On Jan 3, 2019, at 8:17 PM, Jim Brown wrote: > >> On 1/3/2019 4:25 PM, Don Wilhelm wrote: >> While you quote a 50-50 split with the estate, most individual hams will do that for a greater share to the survivors - giving all but the expenses incurred to the survivors. > > When I helped a neighbor ham's widow dispose of his stuff about ten years ago, she got EVERYTHING except what I had to pay for shipping. I did all the packing. Buyers picked up the antennas and power amps. I bought all of the hard line. Ditto for a few years ago when a neighbor ham moved out of his house and moved onto a sailboat! In fact, with the widow, I categorized his huge junkbox, coax, hardline, and antennas. I coordinated more than dozen or so of his friends to take down his antennas and his towers. At least three guys did the climbing, with lots of help on the ground. And when we had sold as much as we could, several of us helped her drag what was left to several ham swap meets. > > I took a bunch of the stuff I wanted, and paid her what anyone else would have paid for it. > > This is the ham radio that I grew up in, and I hope my XYL be treated that way too. > > 73, Jim K9YC > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rocketnj at gmail.com From barrylazar2 at gmail.com Thu Jan 3 20:51:00 2019 From: barrylazar2 at gmail.com (Barry) Date: Fri, 04 Jan 2019 01:51:00 +0000 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: <2f1462f9-6220-4a17-d653-3e374e1d079b@gmail.com> References: <1521428608.8874843.1546538182707.JavaMail.root@starpower.net> <910fdc21-d108-bb6f-4953-85fd75063ae0@audiosystemsgroup.com> <2f1462f9-6220-4a17-d653-3e374e1d079b@gmail.com> Message-ID: Try The RF Connection. Just tell Joel you want Amphenol connectors. He will make your cables to order for a reasonable price. 73, Barry K3NDM ------ Original Message ------ From: "Buck" To: elecraft at mailman.qth.net Sent: 1/3/2019 2:53:15 PM Subject: Re: [Elecraft] K3 Standard internal Noise >Where did you find "quality" cables? > >Buck, k4ia >Honor Roll >8BDXCC >EasyWayHamBooks.com > >On 1/3/2019 2:49 PM, Jim Brown wrote: >>I've had the same issue here. >> >>73, Jim K9YC >> >>On 1/3/2019 9:56 AM, donovanf at starpower.net wrote: >>>I own several P3s and all were supplied with cables that are very >>>susceptible to external RFI because of their very poor quality BNC >>>connectors. I replaced the cables and my P3s have never had an RFI >>>problem again. The Elecraft supplied cables went in the trash bin. >> >> >>______________________________________________________________ >>Elecraft mailing list >>Home: http://mailman.qth.net/mailman/listinfo/elecraft >>Help: http://mailman.qth.net/mmfaq.htm >>Post: mailto:Elecraft at mailman.qth.net >> >>This list hosted by: http://www.qsl.net >>Please help support this email list: http://www.qsl.net/donate.html >>Message delivered to radiok4ia at gmail.com >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft at mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html >Message delivered to barrylazar2 at gmail.com From K2TK at ptd.net Thu Jan 3 20:52:56 2019 From: K2TK at ptd.net (Bob) Date: Thu, 3 Jan 2019 20:52:56 -0500 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: <2f1462f9-6220-4a17-d653-3e374e1d079b@Gmail.com> References: <1521428608.8874843.1546538182707.JavaMail.root@starpower.net> <910fdc21-d108-bb6f-4953-85fd75063ae0@audiosystemsgroup.com> <2f1462f9-6220-4a17-d653-3e374e1d079b@Gmail.com> Message-ID: <7de005a2-9de7-e2c4-537c-3af6b7f3ca63@ptd.net> I've had good luck with these people: http://www.l-com.com/ Have bought coax jumpers, Ethernet and D types from them. No issues or failures. 73, Bob K2TK On 1/3/2019 2:53 PM, Buck wrote: > Where did you find "quality" cables? > > Buck, k4ia > Honor Roll > 8BDXCC > EasyWayHamBooks.com > > On 1/3/2019 2:49 PM, Jim Brown wrote: >> I've had the same issue here. >> >> 73, Jim K9YC >> >> On 1/3/2019 9:56 AM, donovanf at starpower.net wrote: >>> I own several P3s and all were supplied with cables that are very >>> susceptible to external RFI because of their very poor quality BNC >>> connectors. I replaced the cables and my P3s have never had an RFI >>> problem again. The Elecraft supplied cables went in the trash bin. >> > From donwilh at embarqmail.com Thu Jan 3 15:58:54 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Thu, 3 Jan 2019 15:58:54 -0500 Subject: [Elecraft] Suggested prices? In-Reply-To: References: Message-ID: Michael, It all depends on a lot of things. My personal "rule of thumb" is that I will pay up to 2/3 of the new price for a used transceiver. Since these are assembled kits, a lot has to do with how well it was built and the level of any upgrades. For instance on the K2, what is the serial number. Those below SN 3000 which have not been upgraded with ALL the relevant A to B mod kits and the IF crystal set upgraded will be worth less than a SN above 3000. 73, Don W3FPR On 1/3/2019 3:09 PM, Michael Bower wrote: > Hi, gang, > > We are in the process of downsizing for a future (not scheduled). Can > anyone give me suggestions for prices on the below rigs if I decide to sell > them instead of moving them? I am the original owner and builder of all > three rigs. I am very careful in building but I have also had these rigs > checked by someone with a LOT more experience than me. > > 1) 2-band K1 with: > > Internal battery > Internal antenna tuner > stand. > > 2) 2-band KX1 with: > > unbuilt internal antenna tuner. > > 3) K2 with: > > SSB module > Internal battery > Unbuilt antenna tuner. > > Thanks in advance. > From djwilcox01 at gmail.com Thu Jan 3 21:08:02 2019 From: djwilcox01 at gmail.com (David J. Wilcox) Date: Thu, 3 Jan 2019 21:08:02 -0500 Subject: [Elecraft] Suggested prices? In-Reply-To: References: <20190103221110.OSW29.180284.root@dnvrco-web13> <85624811-E2CC-4D04-BBA1-28DB5D2B7895@gmail.com> <795a73d1-31c2-c54b-b110-a2e353bb8996@embarqmail.com> Message-ID: I think I should have NOT mentioned the 50:50 sale agreement out club had with a recent widow, but I thought it had bearing on the method of disposing a deceased hams equipment. I listed it as one of the options so the ham in question could recommend to his heirs the ways to dispose of his equipment. The facts are that hams widow wanted the club to have ALL the proceeds from the sale. She just wanted the stuff out of the house. The person in charge talked her into accepting 50% and the club did subtract the shipping costs from the club's profit. Have you ever shipped an Alpha amp across the company..... our group had UPS do it and they did the packing too, thus having a guarantee and insurance on the amp. In the past our club had a few men who took on small estate sales for nothing and one of my friends used to charge 15%. He felt that covered hauling it to many swaps across Michigan until the goods were finally sold. We are not selfish or mean spirited in situations like this. These were the facts as told to me. The most recent ones in my memory were donations to the club of a single rig and that was the wish of the decedent himself. We are still using those rigs in our club station and field day. Dave K8WPE Virus-free. www.avg.com <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Thu, Jan 3, 2019 at 8:42 PM Dave wrote: > Jim > > I am sure the widows of the hams you helped appreciate the effort. Great > job! > > Dave wo2x > > Sent from my waxed string and tin cans. > > > On Jan 3, 2019, at 8:17 PM, Jim Brown wrote: > > > >> On 1/3/2019 4:25 PM, Don Wilhelm wrote: > >> While you quote a 50-50 split with the estate, most individual hams > will do that for a greater share to the survivors - giving all but the > expenses incurred to the survivors. > > > > When I helped a neighbor ham's widow dispose of his stuff about ten > years ago, she got EVERYTHING except what I had to pay for shipping. I did > all the packing. Buyers picked up the antennas and power amps. I bought all > of the hard line. Ditto for a few years ago when a neighbor ham moved out > of his house and moved onto a sailboat! In fact, with the widow, I > categorized his huge junkbox, coax, hardline, and antennas. I coordinated > more than dozen or so of his friends to take down his antennas and his > towers. At least three guys did the climbing, with lots of help on the > ground. And when we had sold as much as we could, several of us helped her > drag what was left to several ham swap meets. > > > > I took a bunch of the stuff I wanted, and paid her what anyone else > would have paid for it. > > > > This is the ham radio that I grew up in, and I hope my XYL be treated > that way too. > > > > 73, Jim K9YC > > > > > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to rocketnj at gmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to djwilcox01 at gmail.com > From k9ma at sdellington.us Thu Jan 3 21:08:37 2019 From: k9ma at sdellington.us (K9MA) Date: Thu, 3 Jan 2019 20:08:37 -0600 Subject: [Elecraft] Suggested prices? In-Reply-To: References: <20190103221110.OSW29.180284.root@dnvrco-web13> <85624811-E2CC-4D04-BBA1-28DB5D2B7895@gmail.com> <795a73d1-31c2-c54b-b110-a2e353bb8996@embarqmail.com> Message-ID: <2dd8253b-02d5-0043-e50d-70790c928d8f@sdellington.us> About 15 years ago I was standing on a roof with my now SK friend helping take down an antenna for an elderly ham, now surely a SK, and I said to him, "Don, there won't be any young hams around when our time comes!" I just hope there's someone left to help MY widow! 73, Scott K9MA On 1/3/2019 19:40, Dave wrote: > Jim > > I am sure the widows of the hams you helped appreciate the effort. Great job! > > Dave wo2x > > Sent from my waxed string and tin cans. > >> On Jan 3, 2019, at 8:17 PM, Jim Brown wrote: >> >>> On 1/3/2019 4:25 PM, Don Wilhelm wrote: >>> While you quote a 50-50 split with the estate, most individual hams will do that for a greater share to the survivors - giving all but the expenses incurred to the survivors. >> When I helped a neighbor ham's widow dispose of his stuff about ten years ago, she got EVERYTHING except what I had to pay for shipping. I did all the packing. Buyers picked up the antennas and power amps. I bought all of the hard line. Ditto for a few years ago when a neighbor ham moved out of his house and moved onto a sailboat! In fact, with the widow, I categorized his huge junkbox, coax, hardline, and antennas. I coordinated more than dozen or so of his friends to take down his antennas and his towers. At least three guys did the climbing, with lots of help on the ground. And when we had sold as much as we could, several of us helped her drag what was left to several ham swap meets. >> >> I took a bunch of the stuff I wanted, and paid her what anyone else would have paid for it. >> >> This is the ham radio that I grew up in, and I hope my XYL be treated that way too. >> >> 73, Jim K9YC >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to rocketnj at gmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9ma at sdellington.us -- Scott K9MA k9ma at sdellington.us From ab4iq at comcast.net Thu Jan 3 21:22:41 2019 From: ab4iq at comcast.net (AB4IQ) Date: Thu, 3 Jan 2019 20:22:41 -0600 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: References: <1521428608.8874843.1546538182707.JavaMail.root@starpower.net> <910fdc21-d108-bb6f-4953-85fd75063ae0@audiosystemsgroup.com> <2f1462f9-6220-4a17-d653-3e374e1d079b@gmail.com> Message-ID: <00ba01d4a3d4$5f5be840$1e13b8c0$@comcast.net> R&L makes real good jumpers using Amphenol connecters with 214U. Ed.. AB4IQ -----Original Message----- From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Barry Sent: Thursday, January 3, 2019 7:51 PM To: Buck ; elecraft at mailman.qth.net Subject: Re: [Elecraft] K3 Standard internal Noise Try The RF Connection. Just tell Joel you want Amphenol connectors. He will make your cables to order for a reasonable price. 73, Barry K3NDM ------ Original Message ------ From: "Buck" To: elecraft at mailman.qth.net Sent: 1/3/2019 2:53:15 PM Subject: Re: [Elecraft] K3 Standard internal Noise >Where did you find "quality" cables? > >Buck, k4ia >Honor Roll >8BDXCC >EasyWayHamBooks.com > >On 1/3/2019 2:49 PM, Jim Brown wrote: >>I've had the same issue here. >> >>73, Jim K9YC >> >>On 1/3/2019 9:56 AM, donovanf at starpower.net wrote: >>>I own several P3s and all were supplied with cables that are very >>>susceptible to external RFI because of their very poor quality BNC >>>connectors. I replaced the cables and my P3s have never had an RFI >>>problem again. The Elecraft supplied cables went in the trash bin. >> >> >>______________________________________________________________ >>Elecraft mailing list >>Home: http://mailman.qth.net/mailman/listinfo/elecraft >>Help: http://mailman.qth.net/mmfaq.htm >>Post: mailto:Elecraft at mailman.qth.net >> >>This list hosted by: http://www.qsl.net Please help support this email >>list: http://www.qsl.net/donate.html Message delivered to >>radiok4ia at gmail.com >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft at mailman.qth.net > >This list hosted by: http://www.qsl.net Please help support this email >list: http://www.qsl.net/donate.html Message delivered to >barrylazar2 at gmail.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ab4iq at comcast.net From frantz at pwpconsult.com Thu Jan 3 22:07:57 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Thu, 3 Jan 2019 19:07:57 -0800 Subject: [Elecraft] Suggested prices? In-Reply-To: Message-ID: A widow approached our club wanting help in disposing of her SK husband's Collins and Drake equipment. I said I would test them to see how well they worked. I brought them up using a Variac and tried them into dummy loads and on the air. She handled the sales via ebay etc. Believe me, the chance to play with that equipment was more than enough compensation. She insisted I take some of the pieces, so I have a Schurr paddle connected to my K3 and a Collins phone patch waiting to be connected. I'm happy and would do it again. I think she is happy too. 73 Bill AE6JV On 1/3/19 at 5:17 PM, jim at audiosystemsgroup.com (Jim Brown) wrote: >When I helped a neighbor ham's widow dispose of his stuff about >ten years ago, she got EVERYTHING except what I had to pay for >shipping. I did all the packing. Buyers picked up the antennas >and power amps. I bought all of the hard line. Ditto for a few >years ago when a neighbor ham moved out of his house and moved >onto a sailboat! In fact, with the widow, I categorized his >huge junkbox, coax, hardline, and antennas. I coordinated more >than dozen or so of his friends to take down his antennas and >his towers. At least three guys did the climbing, with lots of >help on the ground. And when we had sold as much as we could, >several of us helped her drag what was left to several ham swap meets. > >I took a bunch of the stuff I wanted, and paid her what anyone >else would have paid for it. > >This is the ham radio that I grew up in, and I hope my XYL be treated that way too. ----------------------------------------------------------------------- Bill Frantz |The nice thing about standards| Periwinkle (408)356-8506 |is there are so many to choose| 16345 Englewood Ave www.pwpconsult.com |from. - Andrew Tanenbaum | Los Gatos, CA 95032 From edauer at law.du.edu Thu Jan 3 22:10:45 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Fri, 4 Jan 2019 03:10:45 +0000 Subject: [Elecraft] Huzzah! for Elecraft Support Message-ID: <3EE79B5E-FF98-4DD8-8275-8052266F296D@law.du.edu> I know this gets monotonous after 1,000 others of similar tenor; but it?s worth saying again. Cody at Support (a new contact for me) replied to my inquiry about update mods in a single day. A brief e-mail exchange later and all of the parts I need for all of the mods since my purchase date are on their way. The schematic arrived yesterday. I cannot recall any consumer-product company in any field that ever did as well. Thanks, Cody; and thanks, Elecraft management for creating this extraordinary corporate culture. Ted, KN1CBR From jthorpe at liberty.edu Thu Jan 3 22:16:51 2019 From: jthorpe at liberty.edu (Thorpe, Jeffrey) Date: Fri, 4 Jan 2019 03:16:51 +0000 Subject: [Elecraft] KX3 and RPi DRAWS hat? In-Reply-To: <00b401d4a376$cde98a50$69bc9ef0$@frawg.org> References: <3B5FB43F-335F-4D9C-87D9-E6FAC0B2C076@liberty.edu> <930525578.12144511.1546476659604@mail.yahoo.com>, <00b401d4a376$cde98a50$69bc9ef0$@frawg.org> Message-ID: <611C53CC-EFA9-47EF-8CAE-089D7FBA2F16@liberty.edu> Thanks for the info. I will likely wait a bit. While I would certainly like to use a Linux-based system, it seems that for the time being anyway, for portable digital ops I?m still better off using my Windows 8.1 tablet. (I REALLY hate saying that!) Jeff - KG7HDZ > On Jan 3, 2019, at 8:14 AM, "kd4iz at frawg.org" wrote: > > Jeff and Joe, > > I am one of the DRAWS hat "early adopters". Yes, it will take some harness wiring but it was easy. The miniDIN6 cable wiring is pin to pin "IKYA standard". All that was needed was adapting the audio I/O wiring and either configuring flrig to key the radio model of choice or use the keying signal available on the miniDIN6 (they are wired to specific RPi GPIO pins). > > The flip side of the coin is that the implementation of the OS (Compass/Raspbian Stretch) and adapted software (including FT8 and JS8) is still being cobbled together and tested. I have Direwolf/Xastir APRS @1200 baud working reliably on all platforms (IC-7000, FT-817, and E KX3 with 2M card). 9600 baud APRS would be nigh on impossible with the KX3 (discriminator access). Digimodes with fldigi work fine with some tuning. Still working out some details for wsjt-x (but it does work). I am not a JS8 fan so you are on your own there. > > It is a true "swiss army knife" device - and like a swiss army knife, you can pretty much only use one blade at a time. I mounted the Pi and DRAWS in a SmartiPi Touch frame and adapted the case back with an 12V barrel connector, ON/OFF switch, and access port to the DIN and GPS SMA connector. Here are some photos of my "holiday project": > https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.dropbox.com%2Fsh%2F4ayvgn1atzaihot%2FAAC8ElL148w9VjgfkyeODlAUa%3Fdl%3D0&data=02%7C01%7CJthorpe%40liberty.edu%7C5e170995673c4c90947208d6718e21ec%7Cbaf8218eb3024465a9934a39c97251b2%7C0%7C0%7C636821252599379853&sdata=UzPo8rQZcOzGut%2BJuG74PnmpPYLYOobiYpstzefMDl8%3D&reserved=0 > The keyboard you see is a wireless micro keyboard that came with my first RPi. The whole station using the KX3 or FT-817 fits in a Rigid "briefcase toolbox" or a medium sized Osprey daypack. > > By the way, the GPS is fast, accurate, and provides a PPS source for the RPi clock which is notoriously bad. Now the Pi tracks the Meinberg provided time on my main workstation here in the office. > > NW Digital wants to have their consumer ready unit - the OS Image, a custom metal case, and the second run of boards ready this month. It?s a fun project. > > KD4IZ > Jack Spitznagel > FM19oo > > > > -----Original Message----- > From: Joe Lynch > Sent: Wednesday, January 2, 2019 19:51 > To: Thorpe, Jeffrey ; Subject: Re: [Elecraft] KX3 and RPi DRAWS hat? > > Me too, Jeff. > I think it holds lots of promise for FT8. I have a steep learning curve, however. > 73, > Joe Lynch, N6CL > On ?Wednesday?, ?January? ?2?, ?2019? ?07?:?46?:?18? ?PM? ?EST, Thorpe, Jeffrey wrote: > > I?ve been looking at one of Northwest Digital Radio?s DRAWS hats with my KX3. However, it uses 2 DIN-6 connectors. Has anybody tried one of these? Looks like it would require cobbling. > > Jeff - KG7HDZ > ______________________________________________________________ > Elecraft mailing list > Home: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7CJthorpe%40liberty.edu%7C5e170995673c4c90947208d6718e21ec%7Cbaf8218eb3024465a9934a39c97251b2%7C0%7C0%7C636821252599379853&sdata=vaLFlTwfOA2OuLrNVrY0GJBSsDGeJOE5NCLgycVXTrU%3D&reserved=0 > Help: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7CJthorpe%40liberty.edu%7C5e170995673c4c90947208d6718e21ec%7Cbaf8218eb3024465a9934a39c97251b2%7C0%7C0%7C636821252599379853&sdata=x9DB8TPj%2BFlWk9olBFaJdiHEEil%2FK4Ue42mu%2F5RxiLE%3D&reserved=0 > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net&data=02%7C01%7CJthorpe%40liberty.edu%7C5e170995673c4c90947208d6718e21ec%7Cbaf8218eb3024465a9934a39c97251b2%7C0%7C0%7C636821252599379853&sdata=WjUfkHluGLABbp%2BzHkUUeb827zX05rVEI7Trg9tfFwg%3D&reserved=0 > Please help support this email list: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7CJthorpe%40liberty.edu%7C5e170995673c4c90947208d6718e21ec%7Cbaf8218eb3024465a9934a39c97251b2%7C0%7C0%7C636821252599379853&sdata=sJxkdRkFBuvt84Z0z6TXa4Yk%2FbvWEoN2NVIWm%2F2L2Wk%3D&reserved=0 Message delivered to n6cl at sbcglobal.net > > ______________________________________________________________ > Elecraft mailing list > Home: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7CJthorpe%40liberty.edu%7C5e170995673c4c90947208d6718e21ec%7Cbaf8218eb3024465a9934a39c97251b2%7C0%7C0%7C636821252599379853&sdata=vaLFlTwfOA2OuLrNVrY0GJBSsDGeJOE5NCLgycVXTrU%3D&reserved=0 > Help: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7CJthorpe%40liberty.edu%7C5e170995673c4c90947208d6718e21ec%7Cbaf8218eb3024465a9934a39c97251b2%7C0%7C0%7C636821252599389858&sdata=vcZvdHQMORnkmS9YsQByh3yh2qvhTzbQuwZ3CDffWQg%3D&reserved=0 > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net&data=02%7C01%7CJthorpe%40liberty.edu%7C5e170995673c4c90947208d6718e21ec%7Cbaf8218eb3024465a9934a39c97251b2%7C0%7C0%7C636821252599389858&sdata=%2BrI7DHv5f%2FEe9nzYLGvRRZAyTvGy9VC%2BpdWBgyh0i3s%3D&reserved=0 > Please help support this email list: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7CJthorpe%40liberty.edu%7C5e170995673c4c90947208d6718e21ec%7Cbaf8218eb3024465a9934a39c97251b2%7C0%7C0%7C636821252599389858&sdata=J4tp9IObZvKjyVPIMYAJCu8B2kWhFvfGmXN20lbxPhk%3D&reserved=0 > Message delivered to jthorpe at liberty.edu From doug at kj0f.com Thu Jan 3 22:20:02 2019 From: doug at kj0f.com (Doug Person) Date: Thu, 3 Jan 2019 20:20:02 -0700 Subject: [Elecraft] Things for sale Message-ID: <1a093ea4-f789-2e40-ada1-96f77f5229a3@kj0f.com> I have the following extras that I would like to sell: ??? KX3 Encoder Upgrade for older KX3's or replacement for newer models Part # KX3VFOMDKT $50 shipped 1st CLASS USPS CONUS ??? K3S to P3 Cable Part # CBL3Y $25 Shipped 1st CLASS USPS CONUS ??? Powerwerx 30 amp power supply as sold by Elecraft model SS30DV $85 Shipped USPS Priority Mail CONUS Contact me off-list if interested. tnx & 73, Doug -- KJ0F From nm5ps at arrl.net Thu Jan 3 22:23:47 2019 From: nm5ps at arrl.net (Pete Spotts) Date: Thu, 03 Jan 2019 20:23:47 -0700 Subject: [Elecraft] K1 noise blanker assembly question Message-ID: <24ef47a772e8fe8c943ee1f32e669f2b8ee691fb.camel@arrl.net> Hi folks, This may be an trivia question for Super Don. ;-) In the sequence of Revs to the KBN1 board, does Rev C include Rev Cr, or is Cr its own board revision? My board is Rev Cr, and toward the end of assembly there are a couple of capacitors that for Rev C require special installation. I don't want to misread either the instructions or the Rev number and muck things up. Oh yes, Happy New Year to all Elecrafters, whether on this list server or not! With best regards, Pete -- Peter N. Spotts -- NM5PS ARRL Public Information Coordinator, New Mexico Section http://www.nm5ps.net Email: nm5ps at arrl.net | Skype: pspotts AMSAT #40612 | CalQRP #67 | G-QRP #13202 | NAQCC #2446 | NEQRP #714 Polar Bear #348 | QCWA #34679 | QRP-ARCI #4174 | SKCC #4853S From dave at nk7z.net Thu Jan 3 22:42:29 2019 From: dave at nk7z.net (Dave Cole (NK7Z)) Date: Thu, 3 Jan 2019 19:42:29 -0800 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: References: <1521428608.8874843.1546538182707.JavaMail.root@starpower.net> <910fdc21-d108-bb6f-4953-85fd75063ae0@audiosystemsgroup.com> <2f1462f9-6220-4a17-d653-3e374e1d079b@Gmail.com> <43f03218-0300-61c7-771d-c20c642975f6@blomand.net> Message-ID: <6c46cb84-f900-9ac8-d80a-3a79baf15647@nk7z.net> Bottom line... We all spent thousands on our setups, why cheap out on a connector... 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Contest ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 1/3/19 1:29 PM, Bob McGraw K4TAX wrote: > That's why I say "in most installations, more connectors usually equal > more problems".?? Mechanical-electro connectors are the weak link in > most all systems. > > I've never burned any coax, but I sure have fried a few connectors to > the point of having them flash over internally. With low level signals, > oxidation of contacts restrict or prevent the flow of current.? For that > reason, it is good practice to "exercise" connectors to provide wiping > action of the contacts. > > And then there are those "look good" connectors found at many hamfests. > Buyer beware, they aren't usually as they appear but simply "good > looking" not necessarily "good performing".? Stick with major known brands. > > 73 > > Bob, K4TAX > > > On 1/3/2019 3:01 PM, Don Wilhelm wrote: >> The quality of the coax is usually good, but it is the connectors that >> give trouble.? If you cut off the connectors and use Amphenol >> connectors you will usually have a 'quality' cable. >> >> 73, >> Don W3FPR >> >> On 1/3/2019 3:22 PM, Bob McGraw K4TAX wrote: >>> DX Engineering has the following: >>> >>> https://www.dxengineering.com/parts/dxe-8xdb002 >>> >>> 73 >>> >>> Bob, K4TAX >>> >>> >>> >>> On 1/3/2019 1:53 PM, Buck wrote: >>>> Where did you find "quality" cables? >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to rmcgraw at blomand.net >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to dave at nk7z.net From rv6amark at yahoo.com Thu Jan 3 22:46:17 2019 From: rv6amark at yahoo.com (Mark) Date: Thu, 03 Jan 2019 19:46:17 -0800 Subject: [Elecraft] Huzzah! for Elecraft Support Message-ID: Re:? "I know this gets monotonous...thanks, Elecraft management for creating this extraordinary corporate culture". Nope!? It just can't be stated often enough because it is so true.? I am still kicking myself for not buying and building a K1 back when it was introduced.? It wasn't until the KX3 came along that I made the leap (retirement gift to me)?and discovered that you get a lot of "unadvertised" features with Elecraft gear, including the wonderful support you mentioned. Thank you, Eric and Wayne...as well as everyone at Elecraft. MarkKE6BB(Enjoying the Kool-Aid!) null From ve3uvt at gmail.com Thu Jan 3 23:03:28 2019 From: ve3uvt at gmail.com (Chris) Date: Thu, 3 Jan 2019 23:03:28 -0500 Subject: [Elecraft] Huzzah! for Elecraft Support In-Reply-To: <20190104034722.C482D149B683@mailman.qth.net> References: <20190104034722.C482D149B683@mailman.qth.net> Message-ID: Elecraft will help you as long as you own their product regardless of whether you bought new from them or second hand. It is very uncommon these days. Best, Chris AD1AD On Thursday, January 3, 2019, Mark via Elecraft wrote: > Re: "I know this gets monotonous...thanks, Elecraft management for > creating this extraordinary corporate culture". > > Nope! It just can't be stated often enough because it is so true. I am > still kicking myself for not buying and building a K1 back when it was > introduced. It wasn't until the KX3 came along that I made the leap > (retirement gift to me) and discovered that you get a lot of "unadvertised" > features with Elecraft gear, including the wonderful support you mentioned. > > Thank you, Eric and Wayne...as well as everyone at Elecraft. > > MarkKE6BB(Enjoying the Kool-Aid!) > > > null > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to ve3uvt at gmail.com From W2xj at w2xj.net Thu Jan 3 23:35:09 2019 From: W2xj at w2xj.net (W2xj) Date: Thu, 3 Jan 2019 23:35:09 -0500 Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: <00ba01d4a3d4$5f5be840$1e13b8c0$@comcast.net> References: <1521428608.8874843.1546538182707.JavaMail.root@starpower.net> <910fdc21-d108-bb6f-4953-85fd75063ae0@audiosystemsgroup.com> <2f1462f9-6220-4a17-d653-3e374e1d079b@gmail.com> <00ba01d4a3d4$5f5be840$1e13b8c0$@comcast.net> Message-ID: I use RG188 double shielded jumpers. The shields are silver plated and connectors are gold plated where possible. I get them from Pasternack. Sent from my iPad > On Jan 3, 2019, at 9:22 PM, AB4IQ wrote: > > R&L makes real good jumpers using Amphenol connecters with 214U. > > Ed.. AB4IQ > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net > [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Barry > Sent: Thursday, January 3, 2019 7:51 PM > To: Buck ; elecraft at mailman.qth.net > Subject: Re: [Elecraft] K3 Standard internal Noise > > Try The RF Connection. Just tell Joel you want Amphenol connectors. He will > make your cables to order for a reasonable price. > > 73, > Barry > K3NDM > > ------ Original Message ------ > From: "Buck" > To: elecraft at mailman.qth.net > Sent: 1/3/2019 2:53:15 PM > Subject: Re: [Elecraft] K3 Standard internal Noise > >> Where did you find "quality" cables? >> >> Buck, k4ia >> Honor Roll >> 8BDXCC >> EasyWayHamBooks.com >> >>> On 1/3/2019 2:49 PM, Jim Brown wrote: >>> I've had the same issue here. >>> >>> 73, Jim K9YC >>> >>>> On 1/3/2019 9:56 AM, donovanf at starpower.net wrote: >>>> I own several P3s and all were supplied with cables that are very >>>> susceptible to external RFI because of their very poor quality BNC >>>> connectors. I replaced the cables and my P3s have never had an RFI >>>> problem again. The Elecraft supplied cables went in the trash bin. >>> >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net Please help support this email >>> list: http://www.qsl.net/donate.html Message delivered to >>> radiok4ia at gmail.com >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net Please help support this email >> list: http://www.qsl.net/donate.html Message delivered to >> barrylazar2 at gmail.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message > delivered to ab4iq at comcast.net > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w2xj at w2xj.net > From donovanf at starpower.net Thu Jan 3 23:26:28 2019 From: donovanf at starpower.net (donovanf at starpower.net) Date: Thu, 3 Jan 2019 23:26:28 -0500 (EST) Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: <6c46cb84-f900-9ac8-d80a-3a79baf15647@nk7z.net> Message-ID: <817367628.9937592.1546575988433.JavaMail.root@starpower.net> There's enormous variance in the quality and reliability of RF connectors; typically caused by inferior materials, manufacturing and installation methods. Hams should never try to save a few dollars on hamfest or cheap import connectors or cables. This is absolutely one of the worst places to economize in your station. The BNC connector probably has the widest quality variance of any RF connector commonly used by hams. Why is this? In part because the axial alignment and mating force of the male and female connector bodies is critically important to reliable connector performance. The spring force of the BNC bayonette and the manufacturing tolerances of the connector must establish and maintain excellent axial connector alignment and mating force throughout its life. Hams experienced in using BNC connectors will often recognize a poor quality BNC connector when the force required to engage the bayonette is unusually low and the axial alignment of the connector bodies is not firmly established and maintained after engaging the connector. If you can easily manipulate the axial a lignment of a BNC connector to its mate you probably have an unreliable BNC connector. This is exactly what was wrong with BNC cable assemblies delivered by Elecraft with some P3s. 73 Frank W3LPL ----- Original Message ----- From: "Dave Cole (NK7Z)" To: elecraft at mailman.qth.net Sent: Friday, January 4, 2019 3:42:29 AM Subject: Re: [Elecraft] K3 Standard internal Noise Bottom line... We all spent thousands on our setups, why cheap out on a connector... 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Contest ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 1/3/19 1:29 PM, Bob McGraw K4TAX wrote: > That's why I say "in most installations, more connectors usually equal > more problems". Mechanical-electro connectors are the weak link in > most all systems. > > I've never burned any coax, but I sure have fried a few connectors to > the point of having them flash over internally. With low level signals, > oxidation of contacts restrict or prevent the flow of current. For that > reason, it is good practice to "exercise" connectors to provide wiping > action of the contacts. > > And then there are those "look good" connectors found at many hamfests. > Buyer beware, they aren't usually as they appear but simply "good > looking" not necessarily "good performing". Stick with major known brands. > > 73 > > Bob, K4TAX > > > On 1/3/2019 3:01 PM, Don Wilhelm wrote: >> The quality of the coax is usually good, but it is the connectors that >> give trouble. If you cut off the connectors and use Amphenol >> connectors you will usually have a 'quality' cable. >> >> 73, >> Don W3FPR >> >> On 1/3/2019 3:22 PM, Bob McGraw K4TAX wrote: >>> DX Engineering has the following: >>> >>> https://www.dxengineering.com/parts/dxe-8xdb002 >>> >>> 73 >>> >>> Bob, K4TAX >>> >>> >>> >>> On 1/3/2019 1:53 PM, Buck wrote: >>>> Where did you find "quality" cables? >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to rmcgraw at blomand.net >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to dave at nk7z.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to donovanf at starpower.net From donovanf at starpower.net Fri Jan 4 00:13:09 2019 From: donovanf at starpower.net (donovanf at starpower.net) Date: Fri, 4 Jan 2019 00:13:09 -0500 (EST) Subject: [Elecraft] K3 Standard internal Noise In-Reply-To: <2f1462f9-6220-4a17-d653-3e374e1d079b@Gmail.com> Message-ID: <1075094124.9999328.1546578789757.JavaMail.root@starpower.net> Hi Buck, RF Connection, DX Engineering and Pasternack are excellent sources for BNC and other high quality high reliability RF cable assemblies. I'm sure there are many others. Avoid hamfest and consumer grade cable assemblies, their quality and reliability varies enormously. 73 Frank W3LPL ----- Original Message ----- From: "Buck" To: elecraft at mailman.qth.net Sent: Thursday, January 3, 2019 7:53:15 PM Subject: Re: [Elecraft] K3 Standard internal Noise Where did you find "quality" cables? Buck, k4ia Honor Roll 8BDXCC EasyWayHamBooks.com On 1/3/2019 2:49 PM, Jim Brown wrote: > I've had the same issue here. > > 73, Jim K9YC > > On 1/3/2019 9:56 AM, donovanf at starpower.net wrote: >> I own several P3s and all were supplied with cables that are very >> susceptible to external RFI because of their very poor quality BNC >> connectors. I replaced the cables and my P3s have never had an RFI >> problem again. The Elecraft supplied cables went in the trash bin. > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to radiok4ia at gmail.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to donovanf at starpower.net From edauer at law.du.edu Fri Jan 4 00:18:02 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Fri, 4 Jan 2019 05:18:02 +0000 Subject: [Elecraft] Suggested Prices? - an additional option Message-ID: There is another way to dispose of our equipment when we go SK, for those who would find this both attractive and feasible. Contributing it to a charitable organization like a school or a club or an international organization that could actually USE the equipment. Some hams would rather see that happen than see their stuff sold for a song into someone else's excess collection. I know it's not for everyone, but for those who want to think about it there is, in most states, a slick way to do it. I can't give legal advice on a reflector, but I can suggest looking into what is typically called a Memorandum Disposition of Personal Property. It's a way of making charitable bequests of stuff just like ham equipment without having to designate it in a will, or have it go through probate, or other hassles of the sort. It's worth inquiring about, for those so inclined. Ted, KN1CBR Edward A. Dauer, LL.B. M.P.H. Dean Emeritus and Professor Emeritus of Law University of Denver From johnn1jm at gmail.com Fri Jan 4 00:57:43 2019 From: johnn1jm at gmail.com (John_N1JM) Date: Thu, 3 Jan 2019 22:57:43 -0700 (MST) Subject: [Elecraft] KPA500 Hum Message-ID: <1546581463323-0.post@n2.nabble.com> I don't use my KPA500 a lot, but I just noticed with only the back switch on I can hear a hum coming from the amp. It disappears of course when I turn the switch off. Is this normal? 73, John N1JM -- Sent from: http://elecraft.365791.n2.nabble.com/ From dl2ydp at darc.de Fri Jan 4 05:07:10 2019 From: dl2ydp at darc.de (Roger) Date: Fri, 4 Jan 2019 03:07:10 -0700 (MST) Subject: [Elecraft] K3S/100-F for sale Message-ID: <1546596430237-0.post@n2.nabble.com> K3-100 factory assembled Filter: FM(13kHz), AM(6kHz) and SSB(2,8kHz) TCXO 0,5ppm KTCX03-1 KDVR3 DIGITAL VOICE RECORDER KBPF3A GENERAL COVERAGE RX BAND-PASS FILTERS I ask for offers 73, Roger DL2YDP -- Sent from: http://elecraft.365791.n2.nabble.com/ From johndaws85 at gmail.com Fri Jan 4 07:52:02 2019 From: johndaws85 at gmail.com (John Daws) Date: Fri, 4 Jan 2019 12:52:02 -0000 Subject: [Elecraft] FW: New customer message on December 14, 2018 at 02:22 AM In-Reply-To: <000001d4a425$ec4f4430$c4edcc90$@gmail.com> References: <5c13846d1ba35_4a3fc7352d46008963f@shopify.com>, <000601d4a424$795ea250$6c1be6f0$@gmail.com> <000001d4a425$ec4f4430$c4edcc90$@gmail.com> Message-ID: <000001d4a42c$4a588ae0$df09a0a0$@gmail.com> Just to copy you in to an enquiry sent to Waters and Stanton in the UK I intend to buy the K2/100 kit but need to be sure about precisely what I need for CW only use Any advice welcome - and needed1 Best John M6KET/2E0XET From: John Daws Sent: 04 January 2019 12:06 To: sales at wsplc.com Subject: FW: New customer message on December 14, 2018 at 02:22 AM FAO Glynn Sent this to Peter Waters but have been advised to forward it to you in the meantime. Would appreciate your thought on exactly what I need to specify on this kit order- and some quotes Many thanks John From: John Daws > Sent: 04 January 2019 11:56 To: 'Peter Waters' > Subject: RE: New customer message on December 14, 2018 at 02:22 AM Peter - have considered all advice and now feel ready to make a definite order; I have also found someone I trust to build the kit. I would like to order a K2/100 kit. For CW use only. 1.I don't think therefore I need the SSB adapter? 2.I don't need the 160/60 metre modules. 3.Are the audio filter options needed - would they enhance CW operation?? 4.I would need to ask you about the High performance noise blanker?? 5.I would not need the Hand Mic and I don't know what the 'Elecraft Logo hat is??!! 6.My understanding is that the ATU KAT100 would have to be an external unit for the K2/100. A price on this would also be needed. 7.SOME IDEA OF PRICE BASED ON THIS WOULD BE APPRECIATED. Please feel free to phone me or respond by e-mail so I can move this forward. I appreciate that the kits have to be ordered from the USA. Thanks for your help Best John M6KET/2E0XET From: Peter Waters > Sent: 14 December 2018 22:46 To: Madelyn Gomez >; John Daws > Subject: Re: New customer message on December 14, 2018 at 02:22 AM Hi John, I just picked up on your email that Elecraft copied me in on. I built myself a K2 around 12 years ago and enjoyed it a lot. However, it is a component level kit and also requires coils to be wound. We do actually import the kits to order but I am not aware of any UK builder that currently offers a build service. It is quite a few hours work and would only really be economical if you could find somebody who could build it as a a hobby project rather than a commercial operation. The KX3 is actually very close to the K2 in terms of power output and has a lot more features. An amplifier would be a better route to go. The kit versions are quite easy to build and require no special skills or test equipment. It is totally solder less. I will be happy to give you any additional advice you may need. Regards, Peter Waters G3OJV. _____ From: Madelyn Gomez > Sent: Friday, December 14, 2018 9:56:26 PM To: John Daws; Peter Waters Subject: Re: New customer message on December 14, 2018 at 02:22 AM Hi John, We still have the K2 kit but we sell it as full soldier kit only. The radio operators here in the US that would rather not build, purchase the kit and have it shipped directly to a builder then on to themselves. Perhaps Waters and Stanton can provide you a list of folks they feel are good builders? Madelyn Gomez Elecraft Sales 125 Westridge Drive, Watsonville, CA. 831-763-4211 On Fri, Dec 14, 2018 at 2:22 AM Elecraft (Shopify) > wrote: You received a new message from your online store's contact form. Name: John Daws Email: johndaws85 at gmail.com Phone: 00441527893645 Body: Just an enquiry from UK customer. Have currently got and enjoy a KX3 but with my 2E0 license now I can use 50 watts.* I am CW only and likely to remain so! I tried a K2/100 yesterday at a dealers and love it to bits- its simplicity and ease of operation- but have no way of knowing the quality of the build inside the chassis: it appears to work! Waters and Stanton in the UK have been very helpful but they no longer import K2's. Is it posible to order a BUILT K2/100 from you and if so how much would it cost me? I would be more reassured if you were able to do the build but the costs and shipping might be prohibitive? I would appreciate any advice . best wishes John M6KET/2E0XET * Have also considered the KXPA100 as a preamp for the KX3 but the K2/100 really does interest me as a 'new' rig and the K3 is out of my price bracket. From rmcgraw at blomand.net Fri Jan 4 08:47:10 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Fri, 4 Jan 2019 07:47:10 -0600 Subject: [Elecraft] KPA500 Hum In-Reply-To: <1546581463323-0.post@n2.nabble.com> References: <1546581463323-0.post@n2.nabble.com> Message-ID: Yes it is normal to hear a slight hum when the Mains switch is on.? Also the left side may be slightly warm.??? When the Mains switch is on, the low voltage power supply is on.??? This supply is for the logic and processing. See the IMPORTANT section on page 14 of the manual for further details. Wonderful amp.?? Love mine. 73 Bob, K4TAX From johnn1jm at gmail.com Fri Jan 4 09:14:10 2019 From: johnn1jm at gmail.com (John_N1JM) Date: Fri, 4 Jan 2019 07:14:10 -0700 (MST) Subject: [Elecraft] KPA500 Hum In-Reply-To: References: <1546581463323-0.post@n2.nabble.com> Message-ID: <1546611250992-0.post@n2.nabble.com> Thanks Bob. Yes great amp. 73, John N1JM Bob McGraw - K4TAX wrote > Yes it is normal to hear a slight hum when the Mains switch is on.? Also > the left side may be slightly warm.??? When the Mains switch is on, the > low voltage power supply is on.??? This supply is for the logic and > processing. > > See the IMPORTANT section on page 14 of the manual for further details. > > Wonderful amp.?? Love mine. > > 73 > > > > > > > > Bob, K4TAX > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: > Elecraft at .qth > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to > lists+1215531472858-365791 at .nabble -- Sent from: http://elecraft.365791.n2.nabble.com/ From donwilh at embarqmail.com Fri Jan 4 09:47:36 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Fri, 4 Jan 2019 09:47:36 -0500 Subject: [Elecraft] K1 noise blanker assembly question In-Reply-To: <24ef47a772e8fe8c943ee1f32e669f2b8ee691fb.camel@arrl.net> References: <24ef47a772e8fe8c943ee1f32e669f2b8ee691fb.camel@arrl.net> Message-ID: Pete, Rev Cr should be the same as Rev C. If you have the two extra capacitors, install them as indicated in the instructions. The Rev D board had thru-holes for those capacitors, but I don't think the Rev D board was ever released. I have never seen one. 73, Don W3FPR On 1/3/2019 10:23 PM, Pete Spotts wrote: > Hi folks, > > This may be an trivia question for Super Don. ;-) In the sequence of > Revs to the KBN1 board, does Rev C include Rev Cr, or is Cr its own > board revision? My board is Rev Cr, and toward the end of assembly > there are a couple of capacitors that for Rev C require special > installation. I don't want to misread either the instructions or the > Rev number and muck things up. > > Oh yes, Happy New Year to all Elecrafters, whether on this list server > or not! > > With best regards, > > Pete > From ae0mm at protonmail.com Fri Jan 4 10:27:11 2019 From: ae0mm at protonmail.com (AE0MM) Date: Fri, 04 Jan 2019 15:27:11 +0000 Subject: [Elecraft] KPA500 Hum In-Reply-To: <1546611250992-0.post@n2.nabble.com> References: <1546581463323-0.post@n2.nabble.com> <1546611250992-0.post@n2.nabble.com> Message-ID: <_lpMJKx7OJEw6XS2kFQ06fq3KDRWG65HVkQT3QoerKVYqgfWLvaGxrBZm3-41pNeDk2IyDdiA51iqd7R9ppH7XUiewCs9s5soPIk57EhqP4=@protonmail.com> John, When my KPA500 hums, I assume it is a power quality problem. It only hums when a curling iron or coffee maker, both of which are on different circuits, are in operation. --mark/ae0mm ??????? Original Message ??????? On Friday, January 4, 2019 8:14 AM, John_N1JM wrote: > Thanks Bob. Yes great amp. > 73, John N1JM > > Bob McGraw - K4TAX wrote > > > Yes it is normal to hear a slight hum when the Mains switch is on.? Also > > the left side may be slightly warm.??? When the Mains switch is on, the > > low voltage power supply is on.??? This supply is for the logic and > > processing. > > See the IMPORTANT section on page 14 of the manual for further details. > > Wonderful amp.?? Love mine. > > 73 > > Bob, K4TAX > > > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto: > > > Elecraft at .qth > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to > > > lists+1215531472858-365791 at .nabble > > -- > > Sent from: http://elecraft.365791.n2.nabble.com/ > > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to ae0mm at protonmail.com From no9e at arrl.net Fri Jan 4 13:28:14 2019 From: no9e at arrl.net (no9e at arrl.net) Date: Fri, 4 Jan 2019 11:28:14 -0700 (MST) Subject: [Elecraft] Thanks, Elecraft! Message-ID: <627229687.170967.1546626494363.JavaMail.administrator@n2.nabble.com> I compared K2 and KX3 side by side. K2 had smoother receive and transmit audio. KX3 works but you enjoy K2. Ignacy, NO9E I wanted to use a vintage rig for SKN, and with my Heathkits out of action, I turned to my trusty K2--little used since the KX3 and KX2 came out. What a joy this radio is to use!? I had forgotten what a gem it is.? Thanks, Elecraft! 73 es HNY, Eric WD6DBM Sent from Yahoo Mail on Android ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to lists+1215531472858-365791 at n2.nabble.com Quoted from: http://elecraft.365791.n2.nabble.com/Thanks-Elecraft-tp7647593.html _____________________________________ Sent from http://elecraft.365791.n2.nabble.com From k9ma at sdellington.us Fri Jan 4 11:51:18 2019 From: k9ma at sdellington.us (K9MA) Date: Fri, 4 Jan 2019 10:51:18 -0600 Subject: [Elecraft] For Sale: KX1 Message-ID: Slightly modified, no ATU, with KXPD1 paddle. $275 plus shipping KX1 Details 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us From rmcgraw at blomand.net Fri Jan 4 13:52:58 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Fri, 4 Jan 2019 12:52:58 -0600 Subject: [Elecraft] KPA500 Hum In-Reply-To: <_lpMJKx7OJEw6XS2kFQ06fq3KDRWG65HVkQT3QoerKVYqgfWLvaGxrBZm3-41pNeDk2IyDdiA51iqd7R9ppH7XUiewCs9s5soPIk57EhqP4=@protonmail.com> References: <1546581463323-0.post@n2.nabble.com> <1546611250992-0.post@n2.nabble.com> <_lpMJKx7OJEw6XS2kFQ06fq3KDRWG65HVkQT3QoerKVYqgfWLvaGxrBZm3-41pNeDk2IyDdiA51iqd7R9ppH7XUiewCs9s5soPIk57EhqP4=@protonmail.com> Message-ID: Mark et al: Your description raises a bit of concern.? Not with the amplifier but with your power distribution in your home / QTH. First I'll presume you are running the amp on 120V and not 240V.?? Thus being so, as the coffee maker comes on or curling iron comes on the Neutral current changes.? The fact they are on separate circuits is one point but they thus share the same neutral.?? If your Neutral is "floating" due to poor conductivity or corroded connections this will cause distortion of the 60 Hz sine wave.?? This distortion is always higher in frequency and is multiples of the 60 Hz signal.?? These distortion products can cause a transformer to "talk" a bit. If not yourself qualified, I would obtain a qualified electrician or consult with your power company about the issue.?? Conclusion: Something isn't right and should be corrected.???? I'm sure others may have further ideas or experiences with this phenomenon. 73 Bob, K4TAX On 1/4/2019 9:27 AM, AE0MM via Elecraft wrote: > John, > > When my KPA500 hums, I assume it is a power quality problem. > It only hums when a curling iron or coffee maker, both of which are on different circuits, are in operation. > > > --mark/ae0mm > > > ??????? Original Message ??????? > On Friday, January 4, 2019 8:14 AM, John_N1JM wrote: > >> Thanks Bob. Yes great amp. >> 73, John N1JM >> >> Bob McGraw - K4TAX wrote >> >>> Yes it is normal to hear a slight hum when the Mains switch is on.? Also >>> the left side may be slightly warm.??? When the Mains switch is on, the >>> low voltage power supply is on.??? This supply is for the logic and >>> processing. >>> See the IMPORTANT section on page 14 of the manual for further details. >>> Wonderful amp.?? Love mine. >>> 73 >>> Bob, K4TAX >>> >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto: >>> Elecraft at .qth >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to >>> lists+1215531472858-365791 at .nabble >> -- >> >> Sent from: http://elecraft.365791.n2.nabble.com/ >> >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to ae0mm at protonmail.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From donwilh at embarqmail.com Fri Jan 4 14:06:53 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Fri, 4 Jan 2019 14:06:53 -0500 Subject: [Elecraft] FW: New customer message on December 14, 2018 at 02:22 AM In-Reply-To: <000001d4a42c$4a588ae0$df09a0a0$@gmail.com> References: <5c13846d1ba35_4a3fc7352d46008963f@shopify.com> <000601d4a424$795ea250$6c1be6f0$@gmail.com> <000001d4a425$ec4f4430$c4edcc90$@gmail.com> <000001d4a42c$4a588ae0$df09a0a0$@gmail.com> Message-ID: <14e9f6e7-3ce1-b18b-dc22-71a04249c5b8@embarqmail.com> John, If you want only CW, the basic K2 and KPA100 will do that for you. If you need a tuner, the KAT100 is a good wide range autotuner. The basic K2 covers 80 thru 10 meters except for 60 meters. To add 60 meters, the K60XV kit is in order and to add 160 meters and the receive antenna connection you will want the K160RX. 73, Don W3FPR On 1/4/2019 7:52 AM, John Daws wrote: > Just to copy you in to an enquiry sent to Waters and Stanton in the UK > > > > I intend to buy the K2/100 kit but need to be sure about precisely what I > need for CW only use > > > > Any advice welcome - and needed1 > > > > Best > > > > John M6KET/2E0XET > > > > From: John Daws > Sent: 04 January 2019 12:06 > To: sales at wsplc.com > Subject: FW: New customer message on December 14, 2018 at 02:22 AM > > > > FAO Glynn > > > > Sent this to Peter Waters but have been advised to forward it to you in the > meantime. > > > > Would appreciate your thought on exactly what I need to specify on this kit > order- and some quotes > > > > Many thanks > > > > John > > > > From: John Daws > > Sent: 04 January 2019 11:56 > To: 'Peter Waters' > > Subject: RE: New customer message on December 14, 2018 at 02:22 AM > > > > Peter - have considered all advice and now feel ready to make a definite > order; I have also found someone I trust to build the kit. > > > > I would like to order a K2/100 kit. For CW use only. > > > > 1.I don't think therefore I need the SSB adapter? > > > > 2.I don't need the 160/60 metre modules. > > > > 3.Are the audio filter options needed - would they enhance CW operation?? > > > > 4.I would need to ask you about the High performance noise blanker?? > > > > 5.I would not need the Hand Mic and I don't know what the 'Elecraft Logo hat > is??!! > > > > 6.My understanding is that the ATU KAT100 would have to be an external unit > for the K2/100. > > A price on this would also be needed. > > > > 7.SOME IDEA OF PRICE BASED ON THIS WOULD BE APPRECIATED. > > > > Please feel free to phone me or respond by e-mail so I can move this > forward. > > I appreciate that the kits have to be ordered from the USA. > > > > Thanks for your help > > > > Best > > > > John > > > > M6KET/2E0XET > > > > > > > > From: Peter Waters > > > Sent: 14 December 2018 22:46 > To: Madelyn Gomez >; > John Daws > > Subject: Re: New customer message on December 14, 2018 at 02:22 AM > > > > Hi John, > > > > I just picked up on your email that Elecraft copied me in on. I built myself > a K2 around 12 years ago and enjoyed it a lot. However, it is a component > level kit and also requires coils to be wound. > > > > We do actually import the kits to order but I am not aware of any UK builder > that currently offers a build service. It is quite a few hours work and > would only really be economical if you could find somebody who could build > it as a a hobby project rather than a commercial operation. > > > > The KX3 is actually very close to the K2 in terms of power output and has a > lot more features. An amplifier would be a better route to go. The kit > versions are quite easy to build and require no special skills or test > equipment. It is totally solder less. > > > > I will be happy to give you any additional advice you may need. > > > > > > Regards, > > > > > > > > Peter Waters G3OJV. > > _____ > > From: Madelyn Gomez > > Sent: Friday, December 14, 2018 9:56:26 PM > To: John Daws; Peter Waters > Subject: Re: New customer message on December 14, 2018 at 02:22 AM > > > > Hi John, > > > > We still have the K2 kit but we sell it as full soldier kit only. > > > > The radio operators here in the US that would rather not build, purchase > the kit and have it shipped directly to a builder then on to themselves. > > > > Perhaps Waters and Stanton can provide you a list of folks they feel are > good builders? > > > > Madelyn Gomez > > Elecraft Sales > > 125 Westridge Drive, Watsonville, CA. > 831-763-4211 > > > > > > On Fri, Dec 14, 2018 at 2:22 AM Elecraft (Shopify) > wrote: > > > > > > > > > > > > You received a new message from your online store's contact form. > > > > > > > Name: > > John Daws > > Email: > > johndaws85 at gmail.com > > Phone: > > 00441527893645 > > Body: > > Just an enquiry from UK customer. > > Have currently got and enjoy a KX3 but with my 2E0 license now I can use 50 > watts.* > > I am CW only and likely to remain so! > > I tried a K2/100 yesterday at a dealers and love it to bits- its simplicity > and ease of operation- but have no way of knowing the quality of the build > inside the chassis: it appears to work! > > Waters and Stanton in the UK have been very helpful but they no longer > import K2's. > > Is it posible to order a BUILT K2/100 from you and if so how much would it > cost me? I would be more reassured if you were able to do the build but the > costs and shipping might be prohibitive? > > I would appreciate any advice . > > best wishes > > John M6KET/2E0XET > > * Have also considered the KXPA100 as a preamp for the KX3 but the K2/100 > really does interest me as a 'new' rig and the K3 is out of my price > bracket. > > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com > From richarddnnr2 at gmail.com Fri Jan 4 14:36:53 2019 From: richarddnnr2 at gmail.com (Richard Donner) Date: Fri, 4 Jan 2019 11:36:53 -0800 Subject: [Elecraft] kx3 mod request and stuff Message-ID: Here is something I would like. A 30 watt kx3. Same size and output 30 watts. Maybe this could be a modification. While I am dreaming how about a compact easily managed highly efficient SOTA antenna. thanks Richard From richarddnnr2 at gmail.com Fri Jan 4 14:43:22 2019 From: richarddnnr2 at gmail.com (Richard Donner) Date: Fri, 4 Jan 2019 11:43:22 -0800 Subject: [Elecraft] kx3 modification request and stuff Message-ID: Here is something I would like. A 30 watt kx3. Same size and output 30 watts. Maybe this could be a modification. While I am dreaming how about a compact easily managed highly efficient SOTA antenna. thanks Richard From jim at audiosystemsgroup.com Fri Jan 4 14:45:04 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Fri, 4 Jan 2019 11:45:04 -0800 Subject: [Elecraft] KPA500 Hum In-Reply-To: References: <1546581463323-0.post@n2.nabble.com> <1546611250992-0.post@n2.nabble.com> <_lpMJKx7OJEw6XS2kFQ06fq3KDRWG65HVkQT3QoerKVYqgfWLvaGxrBZm3-41pNeDk2IyDdiA51iqd7R9ppH7XUiewCs9s5soPIk57EhqP4=@protonmail.com> Message-ID: <0d2ece10-f3b3-b536-24ce-783b4140ce42@audiosystemsgroup.com> On 1/4/2019 10:52 AM, Bob McGraw K4TAX wrote: > Mark et al: > > Your description raises a bit of concern.? Not with the amplifier but > with your power distribution in your home / QTH. > > Yes. This is the symptom of one or more mis-wired outlets, or of an > extra bond between neutral and ground somewhere in your home. This > used to be common practice at large appliances. I would start by > buying and using a good outlet tester, which will check the wiring at > every outlet in your home. > > > First I'll presume you are running the amp on 120V and not 240V. Thus > being so, as the coffee maker comes on or curling iron comes on the > Neutral current changes.? The fact they are on separate circuits is > one point but they thus share the same neutral.?? If your Neutral is > "floating" due to poor conductivity or corroded connections this will > cause distortion of the 60 Hz sine wave. I think you mean neutral coming from the power company, not within the home. > This distortion is always higher in frequency and is multiples of the > 60 Hz signal. There is ALWAYS significant distortion of the AC power waveform that it is NOT the result of any sort of wiring problem. Rather, it is caused by all the rectifier-filter power supplies in virtually every piece of electronics in our homes and businesses. Line current flows mostly at the positive and negative peaks of the AC cycle to recharge the filter capacitors, resulting IR drop only during those peaks.? The peaks are rounded off, and the current is a series of pulses. There's a discussion of this beginning with slide 55 of this talk on Power, Grounding, and Bonding for Ham Radio. http://k9yc.com/GroundingAndAudio.pdf 73, Jim K9YC From donwilh at embarqmail.com Fri Jan 4 14:56:35 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Fri, 4 Jan 2019 14:56:35 -0500 Subject: [Elecraft] kx3 mod request and stuff In-Reply-To: References: Message-ID: Richard, Can't figure out if you are trolling or not. If you can figure out how to dissipate the heat in the small KX3 enclosure, it could work, but you would have to carry a heavy battery to power it. The KXPA100 is one solution, you can throttle the power back to 30 watts, but you still need a large battery for portable unless you have access to AC power where you can use a power supply such as the SS30DV resold by Elecraft. For your SOTA antenna, Elecraft has the AX1 antenna - collapses to 6 inches and works on 20, 17 and 15 meters. 73, Don W3FPR On 1/4/2019 2:36 PM, Richard Donner wrote: > Here is something I would like. > A 30 watt kx3. Same size and output 30 watts. > Maybe this could be a modification. > While I am dreaming how about a compact easily managed highly efficient > SOTA antenna. From doug at kj0f.com Fri Jan 4 15:13:51 2019 From: doug at kj0f.com (Doug Person) Date: Fri, 4 Jan 2019 13:13:51 -0700 Subject: [Elecraft] Things for sale In-Reply-To: <1a093ea4-f789-2e40-ada1-96f77f5229a3@kj0f.com> References: <1a093ea4-f789-2e40-ada1-96f77f5229a3@kj0f.com> Message-ID: <5ab3e4ae-67c5-57ca-f687-244f18d03aee@kj0f.com> Power supply and encoder are spoken for. Still have the cable - it's brand new - never used. Doug -- KJ0F On 1/3/2019 8:20 PM, Doug Person wrote: > I have the following extras that I would like to sell: > > > ??? KX3 Encoder Upgrade for older KX3's or replacement for newer > models Part # KX3VFOMDKT $50 shipped 1st CLASS USPS CONUS > > ??? K3S to P3 Cable Part # CBL3Y $25 Shipped 1st CLASS USPS CONUS > > ??? Powerwerx 30 amp power supply as sold by Elecraft model SS30DV $85 > Shipped USPS Priority Mail CONUS > > > Contact me off-list if interested. > > tnx & 73, Doug -- KJ0F > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to doug at kj0f.com From mike.harris at horizon.co.fk Fri Jan 4 15:39:42 2019 From: mike.harris at horizon.co.fk (Mike Harris) Date: Fri, 4 Jan 2019 17:39:42 -0300 Subject: [Elecraft] FW: New customer message on December 14, 2018 at 02:22 AM In-Reply-To: <14e9f6e7-3ce1-b18b-dc22-71a04249c5b8@embarqmail.com> References: <5c13846d1ba35_4a3fc7352d46008963f@shopify.com> <000601d4a424$795ea250$6c1be6f0$@gmail.com> <000001d4a425$ec4f4430$c4edcc90$@gmail.com> <000001d4a42c$4a588ae0$df09a0a0$@gmail.com> <14e9f6e7-3ce1-b18b-dc22-71a04249c5b8@embarqmail.com> Message-ID: <6df94f2f-291e-173e-5f19-0961e107e360@horizon.co.fk> John, The KAF2 audio filter makes the audio much nicer, the always in line LPF cuts out the hf hiss should you ever listen to SSB. Noise blanker if your environment requires it. These things can be retrofitted if you plan to upgrade it by stealth. Once you have an idea what you're aiming for, go onto the Elecraft site and download the respective manuals. My K2 is #01400 vintage mid year 2000. Regards, Mike VP8NO On 04/01/2019 16:06, Don Wilhelm wrote: > John, > > If you want only CW, the basic K2 and KPA100 will do that for you. > If you need a tuner, the KAT100 is a good wide range autotuner. > > The basic K2 covers 80 thru 10 meters except for 60 meters. > To add 60 meters, the K60XV kit is in order and to add 160 meters and > the receive antenna connection you will want the K160RX. > > 73, > Don W3FPR > > On 1/4/2019 7:52 AM, John Daws wrote: >> Just to copy you in to an enquiry sent to Waters and Stanton in the UK >> >> >> I intend to buy the K2/100 kit but need to be sure about precisely what I >> need for CW only use >> >> >> Any advice welcome - and needed1 >> >> >> Best >> >> >> John M6KET/2E0XET >> >> >> From: John Daws >> Sent: 04 January 2019 12:06 >> To: sales at wsplc.com >> Subject: FW: New customer message on December 14, 2018 at 02:22 AM >> >> >> FAO Glynn >> >> >> Sent this to Peter Waters but have been advised to forward it to you >> in the >> meantime. >> >> >> Would appreciate your thought on exactly what I need to specify on >> this kit >> order- and some quotes >> >> >> Many thanks >> >> >> John >> >> >> From: John Daws > >> Sent: 04 January 2019 11:56 >> To: 'Peter Waters' > > >> Subject: RE: New customer message on December 14, 2018 at 02:22 AM >> >> >> Peter - have considered all advice and now feel ready to make a definite >> order; I have also found someone I trust to build the kit. >> >> >> I would like to order a K2/100 kit. For CW use only. >> >> >> 1.I don't think therefore I need the SSB adapter? >> >> >> 2.I don't need the 160/60 metre modules. >> >> >> 3.Are the audio filter options needed - would they enhance CW operation?? >> >> >> 4.I would need to ask you about the High performance noise blanker?? >> >> >> 5.I would not need the Hand Mic and I don't know what the 'Elecraft >> Logo hat >> is??!! >> >> >> 6.My understanding is that the ATU KAT100 would have to be an external >> unit >> for the K2/100. >> >> A price on this would also be needed. >> >> >> 7.SOME IDEA OF PRICE BASED ON THIS WOULD BE APPRECIATED. >> >> >> Please feel free to phone me or respond by e-mail so I can move this >> forward. >> >> I appreciate that the kits have to be ordered from the USA. >> >> >> Thanks for your help >> >> >> Best >> >> >> John >> >> >> M6KET/2E0XET >> >> >> >> >> From: Peter Waters > > >> >> Sent: 14 December 2018 22:46 >> To: Madelyn Gomez >; >> John Daws > >> Subject: Re: New customer message on December 14, 2018 at 02:22 AM >> >> >> Hi John, >> >> >> I just picked up on your email that Elecraft copied me in on. I built >> myself >> a K2 around 12 years ago and enjoyed it a lot. However, it is a component >> level kit and also requires coils to be wound. >> >> >> We do actually import the kits to order but I am not aware of any UK >> builder >> that currently offers a build service. It is quite a few hours work and >> would only really be economical if you could find somebody who could >> build >> it as a a hobby project rather than a commercial operation. >> >> >> The KX3 is actually very close to the K2 in terms of power output and >> has a >> lot more features. An amplifier would be a better route to go. The kit >> versions are quite easy to build and require no special skills or test >> equipment. It is totally solder less. >> >> >> I will be happy to give you any additional advice you may need. >> >> >> >> Regards, >> >> >> >> >> Peter Waters G3OJV. >> >> ?? _____ >> >> From: Madelyn Gomez > >> Sent: Friday, December 14, 2018 9:56:26 PM >> To: John Daws; Peter Waters >> Subject: Re: New customer message on December 14, 2018 at 02:22 AM >> >> >> Hi John, >> >> >> We still have the K2 kit but we sell it as full soldier kit only. >> >> >> The radio operators here in the US that would rather not build,? purchase >> the kit and have it shipped directly to a builder then on to themselves. >> >> >> Perhaps Waters and Stanton can provide you a list of folks they feel are >> good builders? >> >> >> Madelyn Gomez >> >> Elecraft Sales >> >> 125 Westridge Drive, Watsonville, CA. >> 831-763-4211 >> >> >> >> On Fri, Dec 14, 2018 at 2:22 AM Elecraft (Shopify) > > wrote: >> >> >> >> >> >> >> >> >> >> >> You received a new message from your online store's contact form. >> >> >> >> >> >> Name: >> >> John Daws >> >> Email: >> >> johndaws85 at gmail.com >> >> Phone: >> >> 00441527893645 >> >> Body: >> >> Just an enquiry from? UK customer. >> Have currently got and enjoy a KX3 but with my 2E0 license now I can >> use 50 >> watts.* >> I am CW only and likely to remain so! >> I tried a K2/100? yesterday at a dealers and love it to bits- its >> simplicity >> and ease of operation- but have no way of knowing the quality of the >> build >> inside? the chassis: it appears to work! >> Waters and Stanton in the UK have been very helpful but they no longer >> import K2's. >> Is it posible to order a BUILT K2/100 from you and if so how much >> would it >> cost me? I would be more reassured if you were able to do the build >> but the >> costs and shipping might be prohibitive? >> I would appreciate any advice . >> best wishes >> John M6KET/2E0XET >> * Have also considered the KXPA100 as a preamp for the KX3 but the K2/100 >> really does interest me as a 'new' rig and the K3 is out of my price >> bracket. >> >> >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donwilh at embarqmail.com >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to mike.harris at horizon.co.fk > From ww3s at zoominternet.net Fri Jan 4 15:45:22 2019 From: ww3s at zoominternet.net (Jamie WW3S) Date: Fri, 4 Jan 2019 15:45:22 -0500 (EST) Subject: [Elecraft] K3 KEY OUT, hi or low on TX? In-Reply-To: <1991548966.1118525237.1546634707606.JavaMail.zimbra@zoominternet.net> Message-ID: <133489489.1118526646.1546634722116.JavaMail.zimbra@zoominternet.net> Does the KEY OUT jack go HI or LO during transmit? From donovanf at starpower.net Fri Jan 4 16:00:12 2019 From: donovanf at starpower.net (donovanf at starpower.net) Date: Fri, 4 Jan 2019 16:00:12 -0500 (EST) Subject: [Elecraft] K3 KEY OUT, hi or low on TX? In-Reply-To: <133489489.1118526646.1546634722116.JavaMail.zimbra@zoominternet.net> Message-ID: <256836840.11525356.1546635612409.JavaMail.root@starpower.net> Hi Jamie, Neither... KEY OUT is connected to an IRF630 power MOSFET which has "on/off" states, not "HI/LO" states. During receive its in the off state, sinking less than 50 microamps from the load connected to KEY OUT. During transmit its capable of sinking ("grounding") up to 200 volts at up to 5 amps continuous from the load connected to KEY OUT. 73 Frank W3LPL ----- Original Message ----- From: "Jamie WW3S" To: elecraft at mailman.qth.net Sent: Friday, January 4, 2019 8:45:22 PM Subject: [Elecraft] K3 KEY OUT, hi or low on TX? Does the KEY OUT jack go HI or LO during transmit? ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to donovanf at starpower.net From donwilh at embarqmail.com Fri Jan 4 16:08:47 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Fri, 4 Jan 2019 16:08:47 -0500 Subject: [Elecraft] K3 KEY OUT, hi or low on TX? In-Reply-To: <133489489.1118526646.1546634722116.JavaMail.zimbra@zoominternet.net> References: <133489489.1118526646.1546634722116.JavaMail.zimbra@zoominternet.net> Message-ID: <68e13878-8b0c-9244-d722-3d0f9d51125c@embarqmail.com> Jamie, It will short the active wire to ground. The KeyOut does not source any voltage, it is like a switch, it is either open or closed. Any voltage is sourced by the amplifier or other external device. It will only work with a positive voltage. The voltage and current listed in the specifications are the greatest that the FET can handle. 73, Don W3FPR On 1/4/2019 3:45 PM, Jamie WW3S wrote: > Does the KEY OUT jack go HI or LO during transmit? From backhoeken at yahoo.com Fri Jan 4 18:40:10 2019 From: backhoeken at yahoo.com (Ken B) Date: Fri, 4 Jan 2019 23:40:10 +0000 (UTC) Subject: [Elecraft] Elecraft service commendation References: <2059889409.14580468.1546645210564.ref@mail.yahoo.com> Message-ID: <2059889409.14580468.1546645210564@mail.yahoo.com> Good evening all I am truly amazed at the quality of Customer Service I just received. It takes a lot to impress?me,?Doug and crew did a fantastic job helping to trouble shoot a potential newby configuration issue. The Disney company does fantastic customer service trainings for all their staff on customer service, and sells it externally, Doug could teach them a lesson. Thank youKen BurstallKC1ICN From neilz at techie.com Fri Jan 4 09:17:16 2019 From: neilz at techie.com (Neil Zampella) Date: Fri, 4 Jan 2019 09:17:16 -0500 Subject: [Elecraft] Suggested prices? In-Reply-To: References: Message-ID: <4216d17c-4e27-50ab-1b58-bc21b4d3f9e0@techie.com> Michael, If I were still living in Ashburn, I'd be down to your house with a check for around $800.00 in about a half hour for the K2.? New it costs about $1,000.00, the tuner an additional $220.?? You didn't give the Serial Number of the rig and I'm guessing its a KAT2 tuner? As someone else said, a K1 and KX1 may bring close to original pricing or more. Neil, KN3ILZ On 1/3/2019 3:09 PM, Michael Bower wrote: > Hi, gang, > > We are in the process of downsizing for a future (not scheduled). Can > anyone give me suggestions for prices on the below rigs if I decide to sell > them instead of moving them? I am the original owner and builder of all > three rigs. I am very careful in building but I have also had these rigs > checked by someone with a LOT more experience than me. > > 1) 2-band K1 with: > > Internal battery > Internal antenna tuner > stand. > > 2) 2-band KX1 with: > > unbuilt internal antenna tuner. > > 3) K2 with: > > SSB module > Internal battery > Unbuilt antenna tuner. > > Thanks in advance. > > Michael N4NMR > Ashburn VA > --- This email has been checked for viruses by AVG. https://www.avg.com From nk9g at icloud.com Fri Jan 4 21:11:03 2019 From: nk9g at icloud.com (Rick McGaver) Date: Fri, 4 Jan 2019 19:11:03 -0700 Subject: [Elecraft] KX3 hookup to HF Packer Amp Message-ID: A friend has a KX3 and want to use a HF Packer Amp. The cable that goes to the PTT on the Amp, what is on the other end and it goes where. I see no docs on this anywhere. Any guidance would be appreciated. Rick. NK 9G Sent from my iPad From wunder at wunderwood.org Fri Jan 4 21:19:13 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Fri, 4 Jan 2019 18:19:13 -0800 Subject: [Elecraft] KX3 hookup to HF Packer Amp In-Reply-To: References: Message-ID: <579C106E-9A35-4B74-8E16-9ADFD0BBFA82@wunderwood.org> You want the ACC2 jack. From page 5 of the KX3 manual: "Keyline Out and GPIO (ACC2) The 2.5-mm stereo ACC2 jack provides a keyline output (ring contact) and a general-purpose 3-volt logic signal (tip contact). The keyline output goes low during transmit, and can be used for transmit/receive switching of linear amplifiers and transverters. For keyline voltage and current limits, see Specifications.? wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 4, 2019, at 6:11 PM, Rick McGaver via Elecraft wrote: > > A friend has a KX3 and want to use a HF Packer Amp. The cable that goes to the PTT on the Amp, what is on the other end and it goes where. I see no docs on this anywhere. Any guidance would be appreciated. > Rick. NK 9G > > Sent from my iPad > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From ww3s at zoominternet.net Fri Jan 4 21:40:01 2019 From: ww3s at zoominternet.net (Jamie WW3S) Date: Fri, 4 Jan 2019 21:40:01 -0500 Subject: [Elecraft] display PA temp? Message-ID: <22D4F9D1997D43A998794AA7359036E4@ww3s> I seem to recall there is a way to display the PA temp but cant find the setting to do that..... From rmcgraw at blomand.net Fri Jan 4 21:49:50 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Fri, 4 Jan 2019 20:49:50 -0600 Subject: [Elecraft] display PA temp? In-Reply-To: <22D4F9D1997D43A998794AA7359036E4@ww3s> References: <22D4F9D1997D43A998794AA7359036E4@ww3s> Message-ID: <0e5146dc-4315-3e71-4776-b250a359269b@blomand.net> What amp? With mine I just press TEMP on the front of the amp. 73 Bob, K4TAX On 1/4/2019 8:40 PM, Jamie WW3S wrote: > I seem to recall there is a way to display the PA temp but cant find the setting to do that..... > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From gliderboy1955 at yahoo.com Fri Jan 4 21:52:24 2019 From: gliderboy1955 at yahoo.com (eric norris) Date: Sat, 5 Jan 2019 02:52:24 +0000 (UTC) Subject: [Elecraft] [K1] keying output mod possible? References: <1499055935.6508458.1546656744675.ref@mail.yahoo.com> Message-ID: <1499055935.6508458.1546656744675@mail.yahoo.com> Is there a way to simply mod a K1 to provide a keying output for a KXPA100 or KPA500 amp? I built every option into my four-band K1 if that makes a difference. Thanks and 73 Eric WD6DBM Sent from Yahoo Mail on Android From ww3s at zoominternet.net Fri Jan 4 21:52:39 2019 From: ww3s at zoominternet.net (WW3S) Date: Fri, 4 Jan 2019 21:52:39 -0500 Subject: [Elecraft] display PA temp? In-Reply-To: <0e5146dc-4315-3e71-4776-b250a359269b@blomand.net> References: <22D4F9D1997D43A998794AA7359036E4@ww3s> <0e5146dc-4315-3e71-4776-b250a359269b@blomand.net> Message-ID: I?m sorry.....this is for a K3.... Sent from my iPad > On Jan 4, 2019, at 9:49 PM, Bob McGraw K4TAX wrote: > > What amp? > > With mine I just press TEMP on the front of the amp. > > 73 > > Bob, K4TAX > > >> On 1/4/2019 8:40 PM, Jamie WW3S wrote: >> I seem to recall there is a way to display the PA temp but cant find the setting to do that..... >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to rmcgraw at blomand.net >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to ww3s at zoominternet.net From ed at w0yk.com Fri Jan 4 22:03:28 2019 From: ed at w0yk.com (ed at w0yk.com) Date: Fri, 4 Jan 2019 19:03:28 -0800 Subject: [Elecraft] display PA temp? In-Reply-To: <22D4F9D1997D43A998794AA7359036E4@ww3s> References: <22D4F9D1997D43A998794AA7359036E4@ww3s> Message-ID: <0a9201d4a4a3$3bd05300$b370f900$@w0yk.com> TAP the DISP button and rotate VFO-B to select what you want, in this case PA 36C. Ed W0YK/P49X -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Jamie WW3S Sent: Friday, 04 January, 2019 18:40 To: elecraft at mailman.qth.net Subject: [Elecraft] display PA temp? I seem to recall there is a way to display the PA temp but cant find the setting to do that..... ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ed at w0yk.com From edauer at law.du.edu Fri Jan 4 22:13:58 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Sat, 5 Jan 2019 03:13:58 +0000 Subject: [Elecraft] New Customer Message - re K2 Message-ID: <52F0C0C6-85EC-43F5-8803-7D1BB3BB2197@law.du.edu> Hello John ? If I may add my thoughts to those you have already received - - - The KAF2 is a must-have addition from my point of view. Like you, I am almost entirely CW. I have three K2s, and every one of them has a KAF2. The audio filter adds real value to the K2 CW experience. I also have the KNB2 noise blanker in each but haven?t found it to be very effective with the kinds of noise I encounter. If something is to be left out, this would be it. The KAT2 tuner is also worth adding, but you might want to think about spending just a bit more and getting the KAT-100-1 external ATU . . . . just in case you ever add the 100W amp. I believe it is not possible to have the amp and the KAT2 in the rig at the same time. The KAT-100-1 solves that problem. You might also consider the KIO2 interface . . . works very well with logging programs such as N1MM, among other things. But this is not, in my view, essential. And if you get the amp someday, you'll get an interface. In addition to the K2s I have a KX3 and a K3. The KX3 has more bells and whistles than the K2 does, no doubt about it; but when I want to go low power the K2 is my choice. Much more comfortable ? and fun ? than the KX3, though that too is a matter of completely subjective opinion. Finally, I didn?t see your reasons for not wanting to build your own. I enjoyed the builds so much, I may buy yet another just for the fun of doing it. Ted, KN1CBR From: John Daws > Sent: 04 January 2019 11:56 To: 'Peter Waters' > Subject: RE: New customer message on December 14, 2018 at 02:22 AM Peter - have considered all advice and now feel ready to make a definite order; I have also found someone I trust to build the kit. I would like to order a K2/100 kit. For CW use only. 1.I don't think therefore I need the SSB adapter? 2.I don't need the 160/60 metre modules. 3.Are the audio filter options needed - would they enhance CW operation?? 4.I would need to ask you about the High performance noise blanker?? 5.I would not need the Hand Mic and I don't know what the 'Elecraft Logo hat is??!! 6.My understanding is that the ATU KAT100 would have to be an external unit for the K2/100. A price on this would also be needed. 7.SOME IDEA OF PRICE BASED ON THIS WOULD BE APPRECIATED. Please feel free to phone me or respond by e-mail so I can move this forward. I appreciate that the kits have to be ordered from the USA. Thanks for your help Best John M6KET/2E0XET I would appreciate any advice . best wishes John M6KET/2E0XET From norrislawfirm2 at gmail.com Fri Jan 4 22:42:50 2019 From: norrislawfirm2 at gmail.com (Eric Norris) Date: Fri, 4 Jan 2019 19:42:50 -0800 Subject: [Elecraft] KPA100 in EC2 Enclosure? Message-ID: Is it possible to build a KPA100 into an EC2 enclosure (I have one), and use all external connections between the K2 and the KPA100/EC2? In other words, make it plug and play? My K2 is serial #6000+, and has all the options including KDSP2 and KIO2. I removed the KBT2 just as it started to leak. :-) Would it be necessary to drill the EC2? 73 Eric WD6DBM From donwilh at embarqmail.com Fri Jan 4 23:15:12 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Fri, 4 Jan 2019 23:15:12 -0500 Subject: [Elecraft] KPA100 in EC2 Enclosure? In-Reply-To: References: Message-ID: <9d7dfb23-985b-a77f-da5b-87ba21837163@embarqmail.com> Eric, Yes, it is possible to mount the KPA100 in an EC2 enclosure - If you already have the enclosure. Just mount it instead of the EC2 enclosure top cover. You will need to add a BNC connector to the lower rear panel of the EC2 so you can attach the coax from the K2 to the input coax of the KPA100. If you also want to add the KAT100, you will have to contact Elecraft sales to see if they have any of the E100142 - KAT100-2 Front panel and the E100143 - KAT100-2 rear panels left. If they have them, order those panels and the KAT100-1. You will also need E620012, x2 - 2 pin male, 0.156" spacing Male headers and E620040 - connector 10 pin (5x2) male connector 0.1" spacing. Make up the control cable shown in the KAT100 manual and you will be good to go. You need that control cable whether or not you have the KAT100. 73, Don W3FPR On 1/4/2019 10:42 PM, Eric Norris wrote: > Is it possible to build a KPA100 into an EC2 enclosure (I have one), and > use all external connections between the K2 and the KPA100/EC2? In other > words, make it plug and play? My K2 is serial #6000+, and has all the > options including KDSP2 and KIO2. I removed the KBT2 just as it started to > leak. :-) From norrislawfirm2 at gmail.com Fri Jan 4 23:29:24 2019 From: norrislawfirm2 at gmail.com (Eric Norris) Date: Fri, 4 Jan 2019 20:29:24 -0800 Subject: [Elecraft] FW: New customer message on December 14, 2018 at 02:22 AM In-Reply-To: <000001d4a42c$4a588ae0$df09a0a0$@gmail.com> References: <5c13846d1ba35_4a3fc7352d46008963f@shopify.com> <000601d4a424$795ea250$6c1be6f0$@gmail.com> <000001d4a425$ec4f4430$c4edcc90$@gmail.com> <000001d4a42c$4a588ae0$df09a0a0$@gmail.com> Message-ID: If I could throw in a few thoughts: Building my K2 was by far the most fun building experience in my 45 years of hamming, including many Heathkits. The KAF2 filter is superb imho. My K2 has a KDSP2 instead, but I use an external KAF2 on my old Heathkits, and it turns their wide receivers from useless to really good on CW. There are several ways to get an amp keying signal out of a K2, the 160m board requires one wire to a connector, period. If the other methods are as easy, perhaps Don W3FPR can mention them, but it is something to consider for future growth, like a KXPA100. On the noise blanker--my K2 NB was useless. I even sent it back to Don for testing, where it passed with no problems. I found a mod on the web, and PRESTO, it works great on my local noise. Other friend's stock KNB2 work fine for them. It just depends, but there are multiple easy mods out there to help make it work for you. I built multiple versions. The KIO2 gives you a lot of flexibility as others have mentioned. The KX3 does everything better, except at being a K2. I can't put my finger on it. For a CW guy they are just special. They sound great and you can listen to them ad infinitum. I'm looking at my K2 sitting on top of my covered K3S right now. I can't stop looking. The K2 is the Sophia Loren of radios. Before the KX3 and KX2, I would haul my K2 to parks while the XYL painted. Having the KAT2 gives you great flexibility for a wire in a tree, or the new Elecraft ultra-portable QRP vertical. Have fun! 73 Eric WD6DBM On Fri, Jan 4, 2019, 4:57 AM John Daws Just to copy you in to an enquiry sent to Waters and Stanton in the UK > > > > I intend to buy the K2/100 kit but need to be sure about precisely what I > need for CW only use > > > > Any advice welcome > From macymonkeys at charter.net Fri Jan 4 23:44:42 2019 From: macymonkeys at charter.net (Macy monkeys) Date: Fri, 4 Jan 2019 20:44:42 -0800 Subject: [Elecraft] FW: New customer message on December 14, 2018 at 02:22 AM In-Reply-To: References: <5c13846d1ba35_4a3fc7352d46008963f@shopify.com> <000601d4a424$795ea250$6c1be6f0$@gmail.com> <000001d4a425$ec4f4430$c4edcc90$@gmail.com> <000001d4a42c$4a588ae0$df09a0a0$@gmail.com> Message-ID: <6DAFDB1F-991D-487F-8305-758EBA809B31@charter.net> When you listen to the K2's receiver it's like there's nothing between the antenna and your headphones but signal. John K7FD > On Jan 4, 2019, at 8:29 PM, Eric Norris wrote: > > If I could throw in a few thoughts: > > Building my K2 was by far the most fun building experience in my 45 years > of hamming, including many Heathkits. > > The KAF2 filter is superb imho. My K2 has a KDSP2 instead, but I use an > external KAF2 on my old Heathkits, and it turns their wide receivers from > useless to really good on CW. > > There are several ways to get an amp keying signal out of a K2, the 160m > board requires one wire to a connector, period. If the other methods are > as easy, perhaps Don W3FPR can mention them, but it is something to > consider for future growth, like a KXPA100. > > On the noise blanker--my K2 NB was useless. I even sent it back to Don for > testing, where it passed with no problems. I found a mod on the web, and > PRESTO, it works great on my local noise. Other friend's stock KNB2 work > fine for them. It just depends, but there are multiple easy mods out there > to help make it work for you. I built multiple versions. > > The KIO2 gives you a lot of flexibility as others have mentioned. > > The KX3 does everything better, except at being a K2. I can't put my > finger on it. For a CW guy they are just special. They sound great and > you can listen to them ad infinitum. I'm looking at my K2 sitting on top > of my covered K3S right now. I can't stop looking. The K2 is the Sophia > Loren of radios. > > Before the KX3 and KX2, I would haul my K2 to parks while the XYL painted. > Having the KAT2 gives you great flexibility for a wire in a tree, or the > new Elecraft ultra-portable QRP vertical. > > Have fun! > > 73 Eric WD6DBM > >> On Fri, Jan 4, 2019, 4:57 AM John Daws > >> Just to copy you in to an enquiry sent to Waters and Stanton in the UK >> >> >> >> I intend to buy the K2/100 kit but need to be sure about precisely what I >> need for CW only use >> >> >> >> Any advice welcome >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to macymonkeys at charter.net From mspmail2 at gmail.com Sat Jan 5 06:07:37 2019 From: mspmail2 at gmail.com (Mike Parkes) Date: Sat, 5 Jan 2019 03:07:37 -0800 Subject: [Elecraft] KX3 - PF1 shortcut interrupting transmitting Message-ID: Well this is a strange one. I set one of the Programmable Function switches PF1 to turn the illumination of the display on and off which works fine as a shortcut (I like to keep the display of the KX3 off most of the time in the shack and was delighted to find I can set PF1 or PF2 to easily do that with one step). Well, apparently it *also *ends any transmitting of the KX3 while using external programs like WSJT-X or fldigi. The switch doesn't work as a shortcut to a menu item while the rig is keyed. Is there a solution to this or is it some sort of limitation of the PF1 switches that they cease to work as shortcuts while the rig is transmitting? Thanks, Mike AB7RU From n2ry at yahoo.com Sat Jan 5 08:44:34 2019 From: n2ry at yahoo.com (Rich Yost) Date: Sat, 5 Jan 2019 13:44:34 +0000 (UTC) Subject: [Elecraft] Tech Support --- kpa1500 KUDOS References: <344994338.6610277.1546695874581.ref@mail.yahoo.com> Message-ID: <344994338.6610277.1546695874581@mail.yahoo.com> Well, I saw the email Thursday night about the Important firmware update for the kpa1500 v2.0 So I applied it after updating the utility program first when I got home from work on Friday. Going well, till it failed and then hung. Yes - I freaked out, I know what bad things happen when firmware updates go bad (aka iPhone) well, sent a email to support - WITHIN 5 mins someone called to have me power off the from the back switch on the PS wait 5 mins and should be fine. Sorry -- didn't remember his name, but the point was that I got a call within 5 minutes !!!!!? Fantastic support ....... So? i followed what he said to do and tried it 10 mins later Still issues - just showed loading , but the utility showing loading but nothing worked yet and the fans were screaming. Another email to support ......... 5 minutes later again, Cody called and walked me off the edge and explained the force load procedure on page 29 ( yea - I know ..... RTFM. I did remember seeing, but didn't remember it at the time well, back in business less than 5 mins later on the air all done happy happy joy joy So, big NY kudos to tech support, first tech and to Cody. that's top notch support ..... Cody made mention he wanted to make sure i got thru this for the weekend, that right there ...... yea So, to Elecraft Support/Engineers? thank you from n2ry ..... just spent 45 mins on 80m AM Richn2ry From pincon at erols.com Sat Jan 5 09:29:31 2019 From: pincon at erols.com (Charlie T) Date: Sat, 5 Jan 2019 09:29:31 -0500 Subject: [Elecraft] Tech Support --- kpa1500 KUDOS In-Reply-To: <344994338.6610277.1546695874581@mail.yahoo.com> References: <344994338.6610277.1546695874581.ref@mail.yahoo.com> <344994338.6610277.1546695874581@mail.yahoo.com> Message-ID: <002e01d4a503$1634a1e0$429de5a0$@erols.com> Everything "man-made" can have unforeseen problems no matter how much Beta testing is done. That said, your minus minute follow-up call reminds me of an old TV commercial about a frustrated Maytag repair guy who was bored because he didn't have enough to do. They were obviously touting the reliability of their brand because of the lack or repair work. Now, I am NOT saying Elecraft techs are just sitting around all day drinking coffee, but you can bet if they WERE flooded by service calls, they "probably" couldn't have responded so fast. {Before anyone gets their panties in a twist by reading into this something I did not intend, this IS meant to compliment Elecraft on their reliable equipment and of course their gold medal tech support.} 73, Charlie k3ICH -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Rich Yost via Elecraft Sent: Saturday, January 05, 2019 8:45 AM To: elecraft at mailman.qth.net Subject: [Elecraft] Tech Support --- kpa1500 KUDOS Well, I saw the email Thursday night about the Important firmware update for the kpa1500 v2.0 So I applied it after updating the utility program first when I got home from work on Friday. Going well, till it failed and then hung. Yes - I freaked out, I know what bad things happen when firmware updates go bad (aka iPhone) well, sent a email to support - WITHIN 5 mins someone called to have me power off the from the back switch on the PS wait 5 mins and should be fine. Sorry -- didn't remember his name, but the point was that I got a call within 5 minutes !!!!! Fantastic support ....... So i followed what he said to do and tried it 10 mins later Still issues - just showed loading , but the utility showing loading but nothing worked yet and the fans were screaming. Another email to support ......... 5 minutes later again, Cody called and walked me off the edge and explained the force load procedure on page 29 ( yea - I know ..... RTFM. I did remember seeing, but didn't remember it at the time well, back in business less than 5 mins later on the air all done happy happy joy joy So, big NY kudos to tech support, first tech and to Cody. that's top notch support ..... Cody made mention he wanted to make sure i got thru this for the weekend, that right there ...... yea So, to Elecraft Support/Engineers thank you from n2ry ..... just spent 45 mins on 80m AM Richn2ry ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to pincon at erols.com From donwilh at embarqmail.com Sat Jan 5 10:20:01 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sat, 5 Jan 2019 10:20:01 -0500 Subject: [Elecraft] Tech Support --- kpa1500 KUDOS In-Reply-To: <002e01d4a503$1634a1e0$429de5a0$@erols.com> References: <344994338.6610277.1546695874581.ref@mail.yahoo.com> <344994338.6610277.1546695874581@mail.yahoo.com> <002e01d4a503$1634a1e0$429de5a0$@erols.com> Message-ID: <54a48895-c434-b525-7210-a7762961825f@embarqmail.com> Charlie, Actually, they were swamped with support emails and phone calls yesterday - and have been since before Christmas. Running with only a skeleton staff over the holidays has extracted a toll for the backlog. But with the new and important firmware upgrade for the KPA1500, they were paying close attention to problems with that upgrade, and moving those to a high priority. Right now, support is short-staffed since David became an SK. Yes, I know for sure, I also work in support for the classic gear and try to answer any operating questions for the more recent gear. So if you sent an email to support, be patient, you will get an answer. 73, Don W3FPR On 1/5/2019 9:29 AM, Charlie T wrote: > Everything "man-made" can have unforeseen problems no matter how much Beta testing is done. > > That said, your minus minute follow-up call reminds me of an old TV commercial about a frustrated Maytag repair guy who was bored because he didn't have enough to do. > They were obviously touting the reliability of their brand because of the lack or repair work. > Now, I am NOT saying Elecraft techs are just sitting around all day drinking coffee, but you can bet if they WERE flooded by service calls, they "probably" couldn't have responded so fast. > > {Before anyone gets their panties in a twist by reading into this something I did not intend, this IS meant to compliment Elecraft on their reliable equipment and of course their gold medal tech support.} > > 73, Charlie k3ICH From pfizenmayer at q.com Sat Jan 5 14:02:45 2019 From: pfizenmayer at q.com (HP) Date: Sat, 5 Jan 2019 14:02:45 -0500 (EST) Subject: [Elecraft] K3 power amp 2SC2782 Message-ID: <1022248607.161765861.1546714965531.JavaMail.zimbra@q.com> Anyone know if the Toshiba 2SC2782 transistors used in the K3 power amp have internal matching (mos cap and wirebonds ) ? Or did the K3 power amp ever use Motorola MRF247 transistors ? Hank K7HP From wilton.paul at gmail.com Sat Jan 5 14:34:56 2019 From: wilton.paul at gmail.com (Paul Wilton) Date: Sat, 5 Jan 2019 19:34:56 +0000 Subject: [Elecraft] KPA100 failure Message-ID: <02B104C7-9675-4C68-A75C-90C3739DEB31@gmail.com> I was using my KPA100/KAT100 combination today to check out some changes to my OCFD antenna. Previously I have had problems with the balun heating up and the SWR increasing over an extended transmit on 7MHz (eg 50w on an FT8 over). I have made an improvement to my OCFD antenna by adding another choke to reduce the common mode current. So in order to test it out, I planned to run 100w CW for 15-30seconds watching the SWR meter on the KAT100 to see if I was going to get the SWR increase. This was done with a ?cold? PA. So I started the test and unlikely previously, the SWR remained good. However at about the 30s mark, I saw some smoke coming from the KPA100 and then it went dead. It also melted my fuseholder in the PA supply (although didn?t actually blow the fuse). I have opened up the KPA100 only to find that the two 22R power resistors around the two final transistors (R38 and R39) have both unsoldered themselves from the board and were lying in the bottom of the case! Clearly it is an easy job just to put them in again but before doing so I want to try and understand what is happening So a few questions: a) I am hoping that my two finals are still OK. Is there a simple test I can do perform applying power? Using a DMM in resistance mode, I measure approx 2M between collector and emitter and 11.2R between base and emitter (other than the missing 22R resistors I haven?t disconnected anything else). b) Any idea what could have caused that much heat that the two resistors unsoldered themselves? It can?t be a DC failure since there is a capacitor blocking the path in the event of a PA transistor shorting to ground. I am concerned that there is some sort of oscillation going on ie the PA is starting to hoot. c) Any advice on how to proceed? 73 Paul M1CNK From donwilh at embarqmail.com Sat Jan 5 15:12:21 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sat, 5 Jan 2019 15:12:21 -0500 Subject: [Elecraft] KPA100 failure In-Reply-To: <02B104C7-9675-4C68-A75C-90C3739DEB31@gmail.com> References: <02B104C7-9675-4C68-A75C-90C3739DEB31@gmail.com> Message-ID: <0384a108-d24d-927f-cb95-2d72e276eadf@embarqmail.com> Paul, I have three possible guesses. First is that the KPA100 was developing the full power output that it is capable of (often 180 watts) because the wattmeter diodes D16 and D17 have been damaged by static (wind, rain, snow, or nearby lightning). If those diodes are damaged the MCU thinks there is no power output and drives to it full power capability. If left to continue, the PA transistors in the base K2 will eventually destroy themselves. The PA transistors in the KPA100 are quite hardy and seldom need to be replaced (I have only replaced 1 set in the last 14 years of repairing K2s). The 2nd possibility is that there is some oscillation. That can happen more frequently on 40 meters, and the KPA100 tries to transmit at about 8 MHz. Be certain your KPA100 is at the latest level. If you have blue toroid cores at RFC1 and L16 it is the latest. If not the latest, upgrade it with the KPA100UPKT. Thirdly, were the PA transistors tight? If not, the PA transistors will heat the board around the transistors and not be thermally coupled to the heatsink. Are the thermal pads properly in place? After initial assembly (and anytime afterwards if the thermal pads are changed) you must re-tighten the screws after about 10 hours of operation at high power. A 4th possibility is that you have a problem in the T/R switch. After you get it up and running, do the Diode Voltage checks in the manual. If you have an older manual but have the latest upgrade installed, use the chart in the KPA100UPKT instructions rather than what is in your manual. Note well, the KPA100 is rated for only 10 seconds of keydown power at 100 watts, so you did exceed its maximum rating. If you melted the fuseholder without blowing the fuse, you may have had bad contact from the wire to the fuse. That would also result in a low voltage to the KPA100 and cause it to draw greater than the normal amount of current because the K2 controls try to keep the power constant - less voltage requires more current for the same power. Hopefully some of that information will answer your question. Do all initial testing into a dummy load and not an antenna and bypass the KAT100 by connecting the dummy load (and perhaps a wattmeter) directly to the KPA100 - remove the coax between the KPA100 RF out and the KAT100 RF IN jacks. 73,, Don W3FPR On 1/5/2019 2:34 PM, Paul Wilton wrote: > I was using my KPA100/KAT100 combination today to check out some changes to my OCFD antenna. Previously I have had problems with the balun heating up and the SWR increasing over an extended transmit on 7MHz (eg 50w on an FT8 over). I have made an improvement to my OCFD antenna by adding another choke to reduce the common mode current. So in order to test it out, I planned to run 100w CW for 15-30seconds watching the SWR meter on the KAT100 to see if I was going to get the SWR increase. This was done with a ?cold? PA. > > So I started the test and unlikely previously, the SWR remained good. However at about the 30s mark, I saw some smoke coming from the KPA100 and then it went dead. It also melted my fuseholder in the PA supply (although didn?t actually blow the fuse). > > I have opened up the KPA100 only to find that the two 22R power resistors around the two final transistors (R38 and R39) have both unsoldered themselves from the board and were lying in the bottom of the case! > > Clearly it is an easy job just to put them in again but before doing so I want to try and understand what is happening > > So a few questions: > a) I am hoping that my two finals are still OK. Is there a simple test I can do perform applying power? Using a DMM in resistance mode, I measure approx 2M between collector and emitter and 11.2R between base and emitter (other than the missing 22R resistors I haven?t disconnected anything else). > b) Any idea what could have caused that much heat that the two resistors unsoldered themselves? It can?t be a DC failure since there is a capacitor blocking the path in the event of a PA transistor shorting to ground. I am concerned that there is some sort of oscillation going on ie the PA is starting to hoot. > c) Any advice on how to proceed? > > From wilton.paul at gmail.com Sat Jan 5 15:55:54 2019 From: wilton.paul at gmail.com (Paul Wilton) Date: Sat, 5 Jan 2019 20:55:54 +0000 Subject: [Elecraft] KPA100 failure In-Reply-To: <0384a108-d24d-927f-cb95-2d72e276eadf@embarqmail.com> References: <02B104C7-9675-4C68-A75C-90C3739DEB31@gmail.com> <0384a108-d24d-927f-cb95-2d72e276eadf@embarqmail.com> Message-ID: Don Thanks for the helpful pointers. Although I didn?t build the KPA100, I did have to fix a few items before it worked. It has got all the updates. I have checked D16 and D17 - they are OK. I?ll check for oscillations - should be easy to spot at 8MHz on an SDR The PA transistors do appear to be tight. However, I have a spare pair of pads so I?ll replace them since I?ll take to undo the heatsink to put the resistors back. I?ll also check out the T/R switch when I recommission everything - I was aware of the changes to the manual thanks. Hopefully I will be able to do these over the next couple of evenings. And I?ll pay attention to the 10s max power spec! Thanks again 73 Paul M1CNK > On 5 Jan 2019, at 20:12, Don Wilhelm wrote: > > Paul, > > I have three possible guesses. > First is that the KPA100 was developing the full power output that it is capable of (often 180 watts) because the wattmeter diodes D16 and D17 have been damaged by static (wind, rain, snow, or nearby lightning). > If those diodes are damaged the MCU thinks there is no power output and drives to it full power capability. If left to continue, the PA transistors in the base K2 will eventually destroy themselves. The PA transistors in the KPA100 are quite hardy and seldom need to be replaced (I have only replaced 1 set in the last 14 years of repairing K2s). > > The 2nd possibility is that there is some oscillation. That can happen more frequently on 40 meters, and the KPA100 tries to transmit at about 8 MHz. Be certain your KPA100 is at the latest level. If you have blue toroid cores at RFC1 and L16 it is the latest. If not the latest, upgrade it with the KPA100UPKT. > > Thirdly, were the PA transistors tight? If not, the PA transistors will heat the board around the transistors and not be thermally coupled to the heatsink. Are the thermal pads properly in place? > After initial assembly (and anytime afterwards if the thermal pads are changed) you must re-tighten the screws after about 10 hours of operation at high power. > > A 4th possibility is that you have a problem in the T/R switch. After you get it up and running, do the Diode Voltage checks in the manual. If you have an older manual but have the latest upgrade installed, use the chart in the KPA100UPKT instructions rather than what is in your manual. > > Note well, the KPA100 is rated for only 10 seconds of keydown power at 100 watts, so you did exceed its maximum rating. > > If you melted the fuseholder without blowing the fuse, you may have had bad contact from the wire to the fuse. That would also result in a low voltage to the KPA100 and cause it to draw greater than the normal amount of current because the K2 controls try to keep the power constant - less voltage requires more current for the same power. > > Hopefully some of that information will answer your question. > Do all initial testing into a dummy load and not an antenna and bypass the KAT100 by connecting the dummy load (and perhaps a wattmeter) directly to the KPA100 - remove the coax between the KPA100 RF out and the KAT100 RF IN jacks. > > 73,, > Don W3FPR > > > > On 1/5/2019 2:34 PM, Paul Wilton wrote: >> I was using my KPA100/KAT100 combination today to check out some changes to my OCFD antenna. Previously I have had problems with the balun heating up and the SWR increasing over an extended transmit on 7MHz (eg 50w on an FT8 over). I have made an improvement to my OCFD antenna by adding another choke to reduce the common mode current. So in order to test it out, I planned to run 100w CW for 15-30seconds watching the SWR meter on the KAT100 to see if I was going to get the SWR increase. This was done with a ?cold? PA. >> So I started the test and unlikely previously, the SWR remained good. However at about the 30s mark, I saw some smoke coming from the KPA100 and then it went dead. It also melted my fuseholder in the PA supply (although didn?t actually blow the fuse). >> I have opened up the KPA100 only to find that the two 22R power resistors around the two final transistors (R38 and R39) have both unsoldered themselves from the board and were lying in the bottom of the case! >> Clearly it is an easy job just to put them in again but before doing so I want to try and understand what is happening >> So a few questions: >> a) I am hoping that my two finals are still OK. Is there a simple test I can do perform applying power? Using a DMM in resistance mode, I measure approx 2M between collector and emitter and 11.2R between base and emitter (other than the missing 22R resistors I haven?t disconnected anything else). >> b) Any idea what could have caused that much heat that the two resistors unsoldered themselves? It can?t be a DC failure since there is a capacitor blocking the path in the event of a PA transistor shorting to ground. I am concerned that there is some sort of oscillation going on ie the PA is starting to hoot. >> c) Any advice on how to proceed? From donwilh at embarqmail.com Sat Jan 5 16:11:49 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sat, 5 Jan 2019 16:11:49 -0500 Subject: [Elecraft] KPA100 failure In-Reply-To: References: <02B104C7-9675-4C68-A75C-90C3739DEB31@gmail.com> <0384a108-d24d-927f-cb95-2d72e276eadf@embarqmail.com> Message-ID: <26f6bfc3-9892-6ab1-f98c-1f29e5a4c805@embarqmail.com> Paul, Sometimes it is just better to replace D16 and D17 than to trust them to an ohmmeter reading. They can be "half bad" - OK at DC, but not at RF.? They are 1N5711 diodes. If you have the latest updates, the oscillation is not a concern unless you have a T/R switch problem. If your thermal pads look OK, reuse them.? they already have conformed to the slight contours of the heatsink and PA transistor surfaces.? Just be sure to put then back the same way they were - they usually stick to the heatsink, so re=positioning them is not a problem. Measure those 22 ohm resistors to make certain they have not changed value due to overheating. 73, Don W3FPR On 1/5/2019 3:55 PM, Paul Wilton wrote: > Don > Thanks for the helpful pointers. > > Although I didn?t build the KPA100, I did have to fix a few items > before it worked. ?It has got all the updates. > > I have checked D16 and D17 - they are OK. > > I?ll check for oscillations - should be easy to spot at 8MHz on an SDR > > The PA transistors do appear to be tight. ?However, I have a spare > pair of pads so I?ll replace them since I?ll take to undo the heatsink > to put the resistors back. ?I?ll also check out the T/R switch when I > recommission everything - I was aware of the changes to the manual thanks. > > Hopefully I will be able to do these over the next couple of evenings. > ?And I?ll pay attention to the 10s max power spec! > > Thanks again > > 73 > > Paul > M1CNK > > > > > >> On 5 Jan 2019, at 20:12, Don Wilhelm > > wrote: >> >> Paul, >> >> I have three possible guesses. >> First is that the KPA100 was developing the full power output that it >> is capable of (often 180 watts) because the wattmeter diodes D16 and >> D17 have been damaged by static (wind, rain, snow, or nearby lightning). >> If those diodes are damaged the MCU thinks there is no power output >> and drives to it full power capability. ?If left to continue, the PA >> transistors in the base K2 will eventually destroy themselves. ?The >> PA transistors in the KPA100 are quite hardy and seldom need to be >> replaced (I have only replaced 1 set in the last 14 years of >> repairing K2s). >> >> The 2nd possibility is that there is some oscillation. ?That can >> happen more frequently on 40 meters, and the KPA100 tries to transmit >> at about 8 MHz. ?Be certain your KPA100 is at the latest level. ?If >> you have blue toroid cores at RFC1 and L16 it is the latest. ?If not >> the latest, upgrade it with the KPA100UPKT. >> >> Thirdly, were the PA transistors tight? ?If not, the PA transistors >> will heat the board around the transistors and not be thermally >> ?coupled to the heatsink. ?Are the thermal pads properly in place? >> After initial assembly (and anytime afterwards if the thermal pads >> are changed) you must re-tighten the screws after about 10 hours of >> operation at high power. >> >> A 4th possibility is that you have a problem in the T/R switch. >> ?After you get it up and running, do the Diode Voltage checks in the >> manual. If you have an older manual but have the latest upgrade >> installed, use the chart in the KPA100UPKT instructions rather than >> what is in your manual. >> >> Note well, the KPA100 is rated for only 10 seconds of keydown power >> at 100 watts, so you did exceed its maximum rating. >> >> If you melted the fuseholder without blowing the fuse, you may have >> had bad contact from the wire to the fuse. ?That would also result in >> a low voltage to the KPA100 and cause it to draw greater than the >> normal amount of current because the K2 controls try to keep the >> power constant - less voltage requires more current for the same power. >> >> Hopefully some of that information will answer your question. >> Do all initial testing into a dummy load and not an antenna and >> bypass the KAT100 by connecting the dummy load (and perhaps a >> wattmeter) directly to the KPA100 - remove the coax between the >> KPA100 RF out and the KAT100 RF IN jacks. >> >> 73,, >> Don W3FPR >> >> >> >> On 1/5/2019 2:34 PM, Paul Wilton wrote: >>> I was using my KPA100/KAT100 combination today to check out some >>> changes to my OCFD antenna. ?Previously I have had problems with the >>> balun heating up and the SWR increasing over an extended transmit on >>> 7MHz (eg 50w on an FT8 over). ??I have made an improvement to my >>> OCFD antenna by adding another choke to reduce the common mode >>> current. ?So in order to test it out, I planned to run 100w CW for >>> 15-30seconds watching the SWR meter on the KAT100 to see if I was >>> going to get the SWR increase. ?This was done with a ?cold? PA. >>> So I started the test and unlikely previously, the SWR remained >>> good. ?However at about the 30s mark, I saw some smoke coming from >>> the KPA100 and then it went dead. ?It also melted my fuseholder in >>> the PA supply (although didn?t actually blow the fuse). >>> I have opened up the KPA100 only to find that the two 22R power >>> resistors around the two final transistors (R38 and R39) have both >>> unsoldered themselves from the board and were lying in the bottom of >>> the case! >>> Clearly it is an easy job just to put them in again but before doing >>> so I want to try and understand what is happening >>> So a few questions: >>> a) I am hoping that my two finals are still OK. ?Is there a simple >>> test I can do perform applying power? ?Using a DMM in resistance >>> mode, I measure approx 2M between collector and emitter and 11.2R >>> between base and emitter (other than the missing 22R resistors I >>> haven?t disconnected anything else). >>> b) Any idea what could have caused that much heat that the two >>> resistors unsoldered themselves? ?It can?t be a DC failure since >>> there is a capacitor blocking the path in the event of a PA >>> transistor shorting to ground. ?I am concerned that there is some >>> sort of oscillation going on ie the PA is starting to hoot. >>> c) Any advice on how to proceed? > From rfriess at usa.net Sat Jan 5 16:23:51 2019 From: rfriess at usa.net (Robert Friess) Date: Sat, 5 Jan 2019 13:23:51 -0800 Subject: [Elecraft] K3 power amp 2SC2782 In-Reply-To: <1022248607.161765861.1546714965531.JavaMail.zimbra@q.com> References: <1022248607.161765861.1546714965531.JavaMail.zimbra@q.com> Message-ID: Hank, The 2SC2782 is not internally matched and is the only part ever used in the KPA3. The KPA3A uses MOSFETs. 73, Bob, N6CM On Sat, Jan 5, 2019 at 11:04 AM HP wrote: > Anyone know if the Toshiba 2SC2782 transistors used in the K3 power amp > have internal matching (mos cap and wirebonds ) ? > > Or did the K3 power amp ever use Motorola MRF247 transistors ? > > > Hank K7HP > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rfriess at usa.net > From a.durbin at msn.com Sat Jan 5 17:02:35 2019 From: a.durbin at msn.com (Andy Durbin) Date: Sat, 5 Jan 2019 22:02:35 +0000 Subject: [Elecraft] KPA500 PA transistor screws Message-ID: >From "KPA100 failure" topic - "Thirdly, were the PA transistors tight? If not, the PA transistors will?heat the board around the transistors and not be thermally coupled to the heatsink. Are the thermal pads properly in place? After initial assembly (and anytime afterwards if the thermal pads are changed) you must re-tighten the screws after about 10 hours of operation at high power." Does the KPA500 need similar attention after the first 10 hours of use? How long is the factory burn-in of KPA500 PA modules and is the security of the mounting screws checked after burn-in? Andy, k3wyc From k9ma at sdellington.us Sat Jan 5 17:16:34 2019 From: k9ma at sdellington.us (K9MA) Date: Sat, 5 Jan 2019 16:16:34 -0600 Subject: [Elecraft] K3 power amp 2SC2782 In-Reply-To: References: <1022248607.161765861.1546714965531.JavaMail.zimbra@q.com> Message-ID: <1f632024-9cc5-43b8-f3d3-507e49ae03a9@sdellington.us> I've always felt that the KPA3 in my K3 was marginal.? For example, I've never been able to get more than about 80 W out of it on 15 meters. (And that's at about 14.5 V) Is the KPA3A any better? 73, Scott K9MA On 1/5/2019 15:23, Robert Friess wrote: > Hank, > > The 2SC2782 is not internally matched and is the only part ever used in the > KPA3. The KPA3A uses MOSFETs. > > 73, > Bob, N6CM > > On Sat, Jan 5, 2019 at 11:04 AM HP wrote: > >> Anyone know if the Toshiba 2SC2782 transistors used in the K3 power amp >> have internal matching (mos cap and wirebonds ) ? >> >> Or did the K3 power amp ever use Motorola MRF247 transistors ? >> >> >> Hank K7HP >> >> ______________________________________________________________ >> -- Scott K9MA k9ma at sdellington.us From donwilh at embarqmail.com Sat Jan 5 17:15:36 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sat, 5 Jan 2019 17:15:36 -0500 Subject: [Elecraft] KPA500 PA transistor screws In-Reply-To: References: Message-ID: <45b982cb-894a-e015-a51c-1d13cea1c1df@embarqmail.com> Andy, No, the KPA500 is a different design than the KPA100. 73, Don W3FPR On 1/5/2019 5:02 PM, Andy Durbin wrote: >>From "KPA100 failure" topic - > > "Thirdly, were the PA transistors tight? If not, the PA transistors will?heat the board around the transistors and not be thermally coupled to the heatsink. Are the thermal pads properly in place? After initial assembly (and anytime afterwards if the thermal pads are changed) you must re-tighten the screws after about 10 hours of operation at high power." > > Does the KPA500 need similar attention after the first 10 hours of use? How long is the factory burn-in of KPA500 PA modules and is the security of the mounting screws checked after burn-in? > > Andy, k3wyc > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com > From ab2tc at arrl.net Sat Jan 5 17:38:22 2019 From: ab2tc at arrl.net (ab2tc) Date: Sat, 5 Jan 2019 15:38:22 -0700 (MST) Subject: [Elecraft] K3 power amp 2SC2782 In-Reply-To: <1f632024-9cc5-43b8-f3d3-507e49ae03a9@sdellington.us> References: <1022248607.161765861.1546714965531.JavaMail.zimbra@q.com> <1f632024-9cc5-43b8-f3d3-507e49ae03a9@sdellington.us> Message-ID: <1546727902560-0.post@n2.nabble.com> Hi, How are you measuring your actual output and in which mode are you testing it? I have a K3S and a K3 souped up to near K3S but still with the original transmitter chain. I have no problem achieving 100W with either one of them into a factory calibrated LP100A, testing it in FM mode. Overall I think the original KPA3 with bipolars is at least as good a transmitter as the new FET-based KPA3A. The transmitter chain in the K3S has been "recalled" twice in order to improve the 3rd order IMD. The original KPA3 has remained unmodified as far as I know. Heve you done the wattmeter calibration based on a wattmeter you trust, such as the LP100A (by Telepost.inc) and have you done the TX gain calibration? A properly functioning K3 or K3S should have no problem achieving 100W provided the power supply is making 13.8V or more *at the transceiver*. AB2TC - Knut K9MA wrote > I've always felt that the KPA3 in my K3 was marginal.? For example, I've > never been able to get more than about 80 W out of it on 15 meters. (And > that's at about 14.5 V) Is the KPA3A any better? > > 73, > Scott K9MA > > On 1/5/2019 15:23, Robert Friess wrote: >> Hank, > -- Sent from: http://elecraft.365791.n2.nabble.com/ From nr4c at widomaker.com Sat Jan 5 17:48:53 2019 From: nr4c at widomaker.com (Nr4c) Date: Sat, 5 Jan 2019 17:48:53 -0500 Subject: [Elecraft] KPA500 Hum In-Reply-To: <1546581463323-0.post@n2.nabble.com> References: <1546581463323-0.post@n2.nabble.com> Message-ID: <9309905C-000A-4B7E-88D8-C84D6B6B8D3B@widomaker.com> Prob. The front switch is a ?soft switch?. Wakes up the amp from a nap. Sent from my iPhone ...nr4c. bill > On Jan 4, 2019, at 12:57 AM, John_N1JM wrote: > > I don't use my KPA500 a lot, but I just noticed with only the back switch on > I can hear a hum coming from the amp. It disappears of course when I turn > the switch off. Is this normal? > > 73, John N1JM > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From ab2tc at arrl.net Sat Jan 5 17:53:20 2019 From: ab2tc at arrl.net (ab2tc) Date: Sat, 5 Jan 2019 15:53:20 -0700 (MST) Subject: [Elecraft] K3 power amp 2SC2782 In-Reply-To: <1546727902560-0.post@n2.nabble.com> References: <1022248607.161765861.1546714965531.JavaMail.zimbra@q.com> <1f632024-9cc5-43b8-f3d3-507e49ae03a9@sdellington.us> <1546727902560-0.post@n2.nabble.com> Message-ID: <1546728800622-0.post@n2.nabble.com> Hi again, One thought: What is your firmware version? I now remember that there was one version that had a problem delivering full power on 15m only. This has long been fixed. Make sure you have the latest. AB2TC - Knut ab2tc wrote > Hi, > > How are you measuring your actual output and in which mode are you testing > it? I have a K3S and a K3 souped up to near K3S but still with the > original > -- Sent from: http://elecraft.365791.n2.nabble.com/ From acsewell at gmail.com Sat Jan 5 18:17:22 2019 From: acsewell at gmail.com (Alan Sewell N5NA) Date: Sat, 5 Jan 2019 17:17:22 -0600 Subject: [Elecraft] KPA1500 Required Update???? In-Reply-To: References: Message-ID: <6e829813-32fc-9c5d-b7cc-f04f54ba6a4d@gmail.com> Where was the email about the important/required KPA1500 update posted? The first I heard about it was Rich's KUDOS reflector post.? I've gone back through my reflector digests and emails and haven't found any announcement about the update. BTW, I just updated to version 2 with no problems. 73, Alan N5NA On 1/5/2019 4:02 PM, elecraft-request at mailman.qth.net wrote: > Message: 13 > Date: Sat, 5 Jan 2019 13:44:34 +0000 (UTC) > From: Rich Yost > To:elecraft at mailman.qth.net > Subject: [Elecraft] Tech Support --- kpa1500 KUDOS > Message-ID:<344994338.6610277.1546695874581 at mail.yahoo.com> > Content-Type: text/plain; charset=UTF-8 > > Well, I saw the email Thursday night about the Important firmware update for the > kpa1500 v2.0 > So I applied it after updating the utility program first when I got home from work on Friday. > > Going well, till it failed and then hung. > Yes - I freaked out, I know what bad things happen when firmware updates go > bad (aka iPhone) From rocketnj at gmail.com Sat Jan 5 18:29:22 2019 From: rocketnj at gmail.com (rocketnj at gmail.com) Date: Sat, 5 Jan 2019 18:29:22 -0500 Subject: [Elecraft] KPA1500 Required Update???? In-Reply-To: <6e829813-32fc-9c5d-b7cc-f04f54ba6a4d@gmail.com> References: <6e829813-32fc-9c5d-b7cc-f04f54ba6a4d@gmail.com> Message-ID: <005c01d4a54e$7db47e80$791d7b80$@gmail.com> It was sent to the email address I gave them when I ordered my amp. Check your spam filters. I forwarded the email to you. Dave wo2x -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Alan Sewell N5NA Sent: Saturday, January 5, 2019 6:17 PM To: elecraft at mailman.qth.net Subject: [Elecraft] KPA1500 Required Update???? Where was the email about the important/required KPA1500 update posted? The first I heard about it was Rich's KUDOS reflector post. I've gone back through my reflector digests and emails and haven't found any announcement about the update. BTW, I just updated to version 2 with no problems. 73, Alan N5NA On 1/5/2019 4:02 PM, elecraft-request at mailman.qth.net wrote: > Message: 13 > Date: Sat, 5 Jan 2019 13:44:34 +0000 (UTC) > From: Rich Yost > To:elecraft at mailman.qth.net > Subject: [Elecraft] Tech Support --- kpa1500 KUDOS > Message-ID:<344994338.6610277.1546695874581 at mail.yahoo.com> > Content-Type: text/plain; charset=UTF-8 > > Well, I saw the email Thursday night about the Important firmware > update for the > kpa1500 v2.0 > So I applied it after updating the utility program first when I got home from work on Friday. > > Going well, till it failed and then hung. > Yes - I freaked out, I know what bad things happen when firmware > updates go bad (aka iPhone) ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to rocketnj at gmail.com From wes_n7ws at triconet.org Sat Jan 5 19:16:10 2019 From: wes_n7ws at triconet.org (Wes Stewart) Date: Sat, 5 Jan 2019 17:16:10 -0700 Subject: [Elecraft] K3 power amp 2SC2782 In-Reply-To: <1f632024-9cc5-43b8-f3d3-507e49ae03a9@sdellington.us> References: <1022248607.161765861.1546714965531.JavaMail.zimbra@q.com> <1f632024-9cc5-43b8-f3d3-507e49ae03a9@sdellington.us> Message-ID: <7d485f3e-e988-c438-a3a4-1575e8d330a6@triconet.org> I have not observed a low power issue in my K3.? OTOH, in my experience the K3S PA has been a huge disappointment.? One reason for buying a K3S was a hope that the TX IMD would be improved with FETs.? This would no doubt have been true if Elecraft designed the radio for 50 VDC. Wes? N7WS On 1/5/2019 3:16 PM, K9MA wrote: > I've always felt that the KPA3 in my K3 was marginal.? For example, I've never > been able to get more than about 80 W out of it on 15 meters. (And that's at > about 14.5 V) Is the KPA3A any better? > > 73, > Scott K9MA > > On 1/5/2019 15:23, Robert Friess wrote: >> Hank, >> >> The 2SC2782 is not internally matched and is the only part ever used in the >> KPA3.? The KPA3A uses MOSFETs. >> >> 73, >> Bob, N6CM >> >> On Sat, Jan 5, 2019 at 11:04 AM HP wrote: >> >>> Anyone know if the Toshiba 2SC2782 transistors used in the K3 power amp >>> have internal matching (mos cap and wirebonds ) ? >>> >>> Or did the K3 power amp ever use Motorola MRF247 transistors ? >>> >>> >>> Hank K7HP >>> >>> ______________________________________________________________ >>> > From ab2tc at arrl.net Sat Jan 5 19:42:29 2019 From: ab2tc at arrl.net (ab2tc) Date: Sat, 5 Jan 2019 17:42:29 -0700 (MST) Subject: [Elecraft] K3 power amp 2SC2782 In-Reply-To: <7d485f3e-e988-c438-a3a4-1575e8d330a6@triconet.org> References: <1022248607.161765861.1546714965531.JavaMail.zimbra@q.com> <1f632024-9cc5-43b8-f3d3-507e49ae03a9@sdellington.us> <7d485f3e-e988-c438-a3a4-1575e8d330a6@triconet.org> Message-ID: <1546735349213-0.post@n2.nabble.com> Hi Wes, Agreed. In my view FETs are a mistake at the 14V level. The old K3 bipolar PA is much better (but still not good). Knut - AB2TC Wes Stewart-2 wrote > I have not observed a low power issue in my K3.? OTOH, in my experience > the K3S > PA has been a huge disappointment.? One reason for buying a K3S was a hope > that > the TX IMD would be improved with FETs.? This would no doubt have been > true if > Elecraft designed the radio for 50 VDC. > > Wes? N7WS > > On 1/5/2019 3:16 PM, K9MA wrote: >> I've always felt that the KPA3 in my K3 was marginal.? For example, I've >> never > -- Sent from: http://elecraft.365791.n2.nabble.com/ From sue.walt at dososaur.com Sat Jan 5 19:47:21 2019 From: sue.walt at dososaur.com (Walter J. Legowski) Date: Sun, 6 Jan 2019 00:47:21 +0000 Subject: [Elecraft] KPA1500 Required Update???? In-Reply-To: <005c01d4a54e$7db47e80$791d7b80$@gmail.com> References: <6e829813-32fc-9c5d-b7cc-f04f54ba6a4d@gmail.com> <005c01d4a54e$7db47e80$791d7b80$@gmail.com> Message-ID: I didn't get any notification either. And it's not in my spam box. Walt, WA1KKM On 1/5/19 11:29 PM, rocketnj at gmail.com wrote: > It was sent to the email address I gave them when I ordered my amp. > Check your spam filters. > > I forwarded the email to you. > > Dave wo2x > > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net On Behalf Of Alan Sewell N5NA > Sent: Saturday, January 5, 2019 6:17 PM > To: elecraft at mailman.qth.net > Subject: [Elecraft] KPA1500 Required Update???? > > Where was the email about the important/required KPA1500 update posted? > > The first I heard about it was Rich's KUDOS reflector post. I've gone back through my reflector digests and emails and haven't found any announcement about the update. > > BTW, I just updated to version 2 with no problems. > > 73, Alan N5NA > > On 1/5/2019 4:02 PM, elecraft-request at mailman.qth.net wrote: >> Message: 13 >> Date: Sat, 5 Jan 2019 13:44:34 +0000 (UTC) >> From: Rich Yost >> To:elecraft at mailman.qth.net >> Subject: [Elecraft] Tech Support --- kpa1500 KUDOS >> Message-ID:<344994338.6610277.1546695874581 at mail.yahoo.com> >> Content-Type: text/plain; charset=UTF-8 >> >> Well, I saw the email Thursday night about the Important firmware >> update for the >> kpa1500 v2.0 >> So I applied it after updating the utility program first when I got home from work on Friday. >> >> Going well, till it failed and then hung. >> Yes - I freaked out, I know what bad things happen when firmware >> updates go bad (aka iPhone) > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message delivered to rocketnj at gmail.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to sue.walt at dososaur.com > From n4zr at comcast.net Sat Jan 5 19:57:24 2019 From: n4zr at comcast.net (Pete) Date: Sat, 5 Jan 2019 19:57:24 -0500 Subject: [Elecraft] KPA1500 Required Update???? In-Reply-To: References: <6e829813-32fc-9c5d-b7cc-f04f54ba6a4d@gmail.com> <005c01d4a54e$7db47e80$791d7b80$@gmail.com> Message-ID: <410CF570-886D-4681-BC81-1997020E0D68@comcast.net> I got it and my amp won?t come until next week sometime 73, Pete N4ZR Sent from my iPhone > On Jan 5, 2019, at 7:47 PM, Walter J. Legowski wrote: > > I didn't get any notification either. And it's not in my spam box. > > Walt, WA1KKM > > >> On 1/5/19 11:29 PM, rocketnj at gmail.com wrote: >> It was sent to the email address I gave them when I ordered my amp. >> Check your spam filters. >> I forwarded the email to you. >> Dave wo2x >> -----Original Message----- >> From: elecraft-bounces at mailman.qth.net On Behalf Of Alan Sewell N5NA >> Sent: Saturday, January 5, 2019 6:17 PM >> To: elecraft at mailman.qth.net >> Subject: [Elecraft] KPA1500 Required Update???? >> Where was the email about the important/required KPA1500 update posted? >> The first I heard about it was Rich's KUDOS reflector post. I've gone back through my reflector digests and emails and haven't found any announcement about the update. >> BTW, I just updated to version 2 with no problems. >> 73, Alan N5NA >>> On 1/5/2019 4:02 PM, elecraft-request at mailman.qth.net wrote: >>> Message: 13 >>> Date: Sat, 5 Jan 2019 13:44:34 +0000 (UTC) >>> From: Rich Yost >>> To:elecraft at mailman.qth.net >>> Subject: [Elecraft] Tech Support --- kpa1500 KUDOS >>> Message-ID:<344994338.6610277.1546695874581 at mail.yahoo.com> >>> Content-Type: text/plain; charset=UTF-8 >>> >>> Well, I saw the email Thursday night about the Important firmware >>> update for the >>> kpa1500 v2.0 >>> So I applied it after updating the utility program first when I got home from work on Friday. >>> >>> Going well, till it failed and then hung. >>> Yes - I freaked out, I know what bad things happen when firmware >>> updates go bad (aka iPhone) >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html Message delivered to rocketnj at gmail.com >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to sue.walt at dososaur.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to n4zr at comcast.net From wa8hgx at gmail.com Sat Jan 5 20:06:52 2019 From: wa8hgx at gmail.com (BRUCE WW8II) Date: Sat, 5 Jan 2019 20:06:52 -0500 Subject: [Elecraft] KPA1500 Required Update???? In-Reply-To: <410CF570-886D-4681-BC81-1997020E0D68@comcast.net> References: <6e829813-32fc-9c5d-b7cc-f04f54ba6a4d@gmail.com> <005c01d4a54e$7db47e80$791d7b80$@gmail.com> <410CF570-886D-4681-BC81-1997020E0D68@comcast.net> Message-ID: I got mine already loaded it, .all is good.. .. The amp still works great 28 watts of drive from my K3s and 1500 peak out of the KPA 1500 on 160 meters Bruce WW8II Virus-free. www.avg.com <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Sat, Jan 5, 2019 at 7:59 PM Pete wrote: > I got it and my amp won?t come until next week sometime > > 73, Pete N4ZR > > Sent from my iPhone > > > On Jan 5, 2019, at 7:47 PM, Walter J. Legowski > wrote: > > > > I didn't get any notification either. And it's not in my spam box. > > > > Walt, WA1KKM > > > > > >> On 1/5/19 11:29 PM, rocketnj at gmail.com wrote: > >> It was sent to the email address I gave them when I ordered my amp. > >> Check your spam filters. > >> I forwarded the email to you. > >> Dave wo2x > >> -----Original Message----- > >> From: elecraft-bounces at mailman.qth.net < > elecraft-bounces at mailman.qth.net> On Behalf Of Alan Sewell N5NA > >> Sent: Saturday, January 5, 2019 6:17 PM > >> To: elecraft at mailman.qth.net > >> Subject: [Elecraft] KPA1500 Required Update???? > >> Where was the email about the important/required KPA1500 update posted? > >> The first I heard about it was Rich's KUDOS reflector post. I've gone > back through my reflector digests and emails and haven't found any > announcement about the update. > >> BTW, I just updated to version 2 with no problems. > >> 73, Alan N5NA > >>> On 1/5/2019 4:02 PM, elecraft-request at mailman.qth.net wrote: > >>> Message: 13 > >>> Date: Sat, 5 Jan 2019 13:44:34 +0000 (UTC) > >>> From: Rich Yost > >>> To:elecraft at mailman.qth.net > >>> Subject: [Elecraft] Tech Support --- kpa1500 KUDOS > >>> Message-ID:<344994338.6610277.1546695874581 at mail.yahoo.com> > >>> Content-Type: text/plain; charset=UTF-8 > >>> > >>> Well, I saw the email Thursday night about the Important firmware > >>> update for the > >>> kpa1500 v2.0 > >>> So I applied it after updating the utility program first when I got > home from work on Friday. > >>> > >>> Going well, till it failed and then hung. > >>> Yes - I freaked out, I know what bad things happen when firmware > >>> updates go bad (aka iPhone) > >> ______________________________________________________________ > >> Elecraft mailing list > >> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >> Help: http://mailman.qth.net/mmfaq.htm > >> Post: mailto:Elecraft at mailman.qth.net > >> This list hosted by: http://www.qsl.net > >> Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rocketnj at gmail.com > >> ______________________________________________________________ > >> Elecraft mailing list > >> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >> Help: http://mailman.qth.net/mmfaq.htm > >> Post: mailto:Elecraft at mailman.qth.net > >> This list hosted by: http://www.qsl.net > >> Please help support this email list: http://www.qsl.net/donate.html > >> Message delivered to sue.walt at dososaur.com > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to n4zr at comcast.net > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wa8hgx at gmail.com Virus-free. www.avg.com <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> From kevinr at coho.net Sat Jan 5 21:07:42 2019 From: kevinr at coho.net (kevinr) Date: Sat, 5 Jan 2019 18:07:42 -0800 Subject: [Elecraft] Elecraft CW Net Announcement Message-ID: <7a7192b1-c3ba-5c52-73e1-15564220c3a4@coho.net> Good Evening, ??? Hopefully I will be able to get on the air tomorrow.? The winds are starting to rise and the power keeps glitching every few minutes.? Mostly just brown out so? the clocks stay set.? The main power lines from Bonneville Dam are very exposed to this weather. A snow storm may or may not blow through.? It all depends on the snow line. ?? There was some strong auroral activity yesterday.? Not from sunspot #2732 but from the solar wind.? If you're in the far western Pacific you'll get to see an eclipse of the sun.? The SFU is up to 72, highest it has been a quite some time.? But we do have one more year left at the bottom of the cycle so be patient. Please join us tomorrow on: 14050 kHz at 2200z Sunday? (2 PM PST Sunday) ?7047 kHz at 0000z Monday? (4 PM PST Sunday) 73, ?? Kevin. KD5ONS - From edauer at law.du.edu Sat Jan 5 21:07:57 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Sun, 6 Jan 2019 02:07:57 +0000 Subject: [Elecraft] KPA1500 Utility and Firmware for Mac? Message-ID: <0431BA08-994B-4D1B-816A-3F729A2C6F91@law.du.edu> I just checked for the new Utility and F/W and could find nothing for Mac OS. The utility is from last June, and it won?t load the new F/W. Will there be a Mac version sometime soon, or am I missing something - again? Last Thursday the price of Apple shares dropped 8.8%. I thought it had to do with reports of consumers in China being uncertain about the effects of America?s trade policies on the Chinese economy, and so being reluctant to buy new $1,000 I-phones. Maybe not. The unavailability of a Mac Utility for the Elecraft KPA1500 is an equally plausible hypothesis. Ted, KN1CBR From dflem at yahoo.com Sat Jan 5 21:49:39 2019 From: dflem at yahoo.com (David Fleming) Date: Sun, 6 Jan 2019 02:49:39 +0000 (UTC) Subject: [Elecraft] KPA1500 Utility and Firmware for Mac? In-Reply-To: <0431BA08-994B-4D1B-816A-3F729A2C6F91@law.du.edu> References: <0431BA08-994B-4D1B-816A-3F729A2C6F91@law.du.edu> Message-ID: <21186264.13634975.1546742979880@mail.yahoo.com> Hi Ted, Just loaded 2.0 using the Mac Utility (v1.1.8.27). No problems at all. David, W4SMT ------------------- On Saturday, January 5, 2019, 9:10:26 PM EST, Dauer, Edward wrote: I just checked for the new Utility and F/W and could find nothing for Mac OS.? The utility is from last June, and it won?t load the new F/W.? Will there be a Mac version sometime soon, or am I missing something - again? Last Thursday the price of Apple shares dropped 8.8%.? I thought it had to do with reports of consumers in China being uncertain about the effects of America?s trade policies on the Chinese economy, and so being reluctant to buy new $1,000 I-phones.? Maybe not.? The unavailability of a Mac Utility for the Elecraft KPA1500 is an equally plausible hypothesis. Ted, KN1CBR From dflem at yahoo.com Sat Jan 5 21:54:44 2019 From: dflem at yahoo.com (David Fleming) Date: Sun, 6 Jan 2019 02:54:44 +0000 (UTC) Subject: [Elecraft] KPA1500 Utility and Firmware for Mac? In-Reply-To: <0431BA08-994B-4D1B-816A-3F729A2C6F91@law.du.edu> References: <0431BA08-994B-4D1B-816A-3F729A2C6F91@law.du.edu> Message-ID: <992513523.13680767.1546743284855@mail.yahoo.com> Oops.. Make that v1.18.6.27 Sorry about that. David, W4SMT ----------------------- On Saturday, January 5, 2019, 9:10:26 PM EST, Dauer, Edward wrote: I just checked for the new Utility and F/W and could find nothing for Mac OS.? The utility is from last June, and it won?t load the new F/W.? Will there be a Mac version sometime soon, or am I missing something - again? Last Thursday the price of Apple shares dropped 8.8%.? I thought it had to do with reports of consumers in China being uncertain about the effects of America?s trade policies on the Chinese economy, and so being reluctant to buy new $1,000 I-phones.? Maybe not.? The unavailability of a Mac Utility for the Elecraft KPA1500 is an equally plausible hypothesis. Ted, KN1CBR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to dflem at yahoo.com From edauer at law.du.edu Sat Jan 5 22:12:21 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Sun, 6 Jan 2019 03:12:21 +0000 Subject: [Elecraft] KPA1500 Utility and Firmware for Mac? In-Reply-To: <992513523.13680767.1546743284855@mail.yahoo.com> References: <0431BA08-994B-4D1B-816A-3F729A2C6F91@law.du.edu> <992513523.13680767.1546743284855@mail.yahoo.com> Message-ID: <8838743C-3B0D-431D-BE25-6E651563F860@law.du.edu> Hmmm . . . I think 18.6.27 is the old utility, from last summer. Elecraft's announcement said we have to use the new utility for the new F/W. The site lists a January 3 2019 utility for Windows but only the 6.27.18 for Mac. That utility reported that I have the latest F/W, which I don't . . . I'll try it again in the morning . . . Tnx, EAD From royord at gmail.com Sat Jan 5 22:35:09 2019 From: royord at gmail.com (Kevin F.) Date: Sat, 5 Jan 2019 20:35:09 -0700 (MST) Subject: [Elecraft] KX3 RX I/Q testing Message-ID: <1546745709079-0.post@n2.nabble.com> Does anyone know how to test the RX I/Q signal is coming out of the radio correctly. I used the elecraft cables trying to listen to the signal using my computer and didn't hear anything. I would like to be able to use this output in fldigi for the waterfall. And still be able to listen to CW signals, so that I can use the waterfall to tune the radio correctly. I'm remembering something about quadrature... not really sure. -- Sent from: http://elecraft.365791.n2.nabble.com/ From barrylazar2 at gmail.com Sat Jan 5 22:50:53 2019 From: barrylazar2 at gmail.com (Barry) Date: Sun, 06 Jan 2019 03:50:53 +0000 Subject: [Elecraft] KX3 RX I/Q testing In-Reply-To: <1546745709079-0.post@n2.nabble.com> References: <1546745709079-0.post@n2.nabble.com> Message-ID: Kevin, The I/Q output is an analog two channel audio signal, but one of the signals is 90 degrees delayed from the other, hence in quadrature. If you plug the output of the I/Q port, one channel at a time into your computer mic input, you will hear a wideband audio signal. There will not be anything magic to hear. FLDIG wants the receiver's filtered audio to drive it. It develops what it needs from a mono audio input, either line or mic in. 73, Barry K3NDM ------ Original Message ------ From: "Kevin F." To: elecraft at mailman.qth.net Sent: 1/5/2019 10:35:09 PM Subject: [Elecraft] KX3 RX I/Q testing >Does anyone know how to test the RX I/Q signal is coming out of the radio >correctly. I used the elecraft cables trying to listen to the signal using >my computer and didn't hear anything. I would like to be able to use this >output in fldigi for the waterfall. And still be able to listen to CW >signals, so that I can use the waterfall to tune the radio correctly. > >I'm remembering something about quadrature... not really sure. > > > >-- >Sent from: http://elecraft.365791.n2.nabble.com/ >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft at mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html >Message delivered to barrylazar2 at gmail.com From royord at gmail.com Sat Jan 5 23:42:36 2019 From: royord at gmail.com (Kevin F.) Date: Sat, 5 Jan 2019 21:42:36 -0700 (MST) Subject: [Elecraft] KX3 RX I/Q testing In-Reply-To: References: <1546745709079-0.post@n2.nabble.com> Message-ID: <1546749756256-0.post@n2.nabble.com> Thanks for the prompt reply, I guess the question that I would like to answer is, if I were to plug in to both sides of the RX I/Q port should I hear anything at all? If I shouldn't then great, if I should then I'm going to need to figure out what's going on with my radio such that I can't heard anything at all... -- Sent from: http://elecraft.365791.n2.nabble.com/ From wunder at wunderwood.org Sun Jan 6 00:26:09 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Sat, 5 Jan 2019 21:26:09 -0800 Subject: [Elecraft] KX3 RX I/Q testing In-Reply-To: <1546749756256-0.post@n2.nabble.com> References: <1546745709079-0.post@n2.nabble.com> <1546749756256-0.post@n2.nabble.com> Message-ID: <5A0953EB-F778-4A49-82EE-E3B1A23F03B0@wunderwood.org> The levels from the RX I/Q are very low, so you might not hear anything. Pages 26 and 27 in the manual talk about using that for computer-based SDR applications. Also, check the RX I/Q menu setting. If that is OFF, you won?t get any output from that jack. Finally, fldigi does not use I/Q signals for its waterfall. It uses the regular audio output from the PHONES jack. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 5, 2019, at 8:42 PM, Kevin F. wrote: > > Thanks for the prompt reply, I guess the question that I would like to answer > is, if I were to plug in to both sides of the RX I/Q port should I hear > anything at all? If I shouldn't then great, if I should then I'm going to > need to figure out what's going on with my radio such that I can't heard > anything at all... > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From roger at mulzer.de Sun Jan 6 03:29:28 2019 From: roger at mulzer.de (Roger) Date: Sun, 6 Jan 2019 09:29:28 +0100 Subject: [Elecraft] K3 power amp 2SC2782 In-Reply-To: <1546735349213-0.post@n2.nabble.com> References: <1022248607.161765861.1546714965531.JavaMail.zimbra@q.com> <1f632024-9cc5-43b8-f3d3-507e49ae03a9@sdellington.us> <7d485f3e-e988-c438-a3a4-1575e8d330a6@triconet.org> <1546735349213-0.post@n2.nabble.com> Message-ID: <007001d4a599$f0d09d90$d271d8b0$@mulzer.de> Examples of "14V" radios using RD100HHF1 final transistors and delivering good & stable results: ANAN 100,200 & 7000 series (w/o PureSignal) (3rd order IMD -30 dBc average (-36dB referred to one tone)); see AB4OJs test Kenwood TS 890S (3rd order IMD -32 dBc (-38 dB referred to one tone)) YAESU and ICOM are running the same transistors in some of their models. I am not promoting any brand but it is nothing "magic" or "bad" with MOSFETS being used at 14 V. Sure their advantage of having even better IMD characteristics at higher voltages cannot be used in a 14 V system. Roger/DL5RBW -----Original Message----- From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of ab2tc Sent: Sunday, January 06, 2019 1:42 AM To: elecraft at mailman.qth.net Subject: Re: [Elecraft] K3 power amp 2SC2782 Hi Wes, Agreed. In my view FETs are a mistake at the 14V level. The old K3 bipolar PA is much better (but still not good). Knut - AB2TC Wes Stewart-2 wrote > I have not observed a low power issue in my K3. OTOH, in my experience > the K3S PA has been a huge disappointment. One reason for buying a K3S > was a hope that the TX IMD would be improved with FETs. This would no > doubt have been true if Elecraft designed the radio for 50 VDC. > > Wes N7WS > > On 1/5/2019 3:16 PM, K9MA wrote: >> I've always felt that the KPA3 in my K3 was marginal. For example, >> I've never > -- Sent from: http://elecraft.365791.n2.nabble.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to roger at mulzer.de From johnae5x at gmail.com Sun Jan 6 07:06:16 2019 From: johnae5x at gmail.com (John Harper) Date: Sun, 6 Jan 2019 06:06:16 -0600 Subject: [Elecraft] KX3 RX I/Q testing Message-ID: Seems like an oscope would show them along with their 90d displacement from each other. John AE5X https://ae5x.blogspot.com >The levels from the RX I/Q are very low, so you might not hear anything. From btippett at alum.mit.edu Sun Jan 6 08:20:54 2019 From: btippett at alum.mit.edu (Bill W4ZV) Date: Sun, 6 Jan 2019 06:20:54 -0700 (MST) Subject: [Elecraft] FW: New customer message on December 14, 2018 at 02:22 AM In-Reply-To: <000001d4a42c$4a588ae0$df09a0a0$@gmail.com> References: <000001d4a42c$4a588ae0$df09a0a0$@gmail.com> Message-ID: <1546780854291-0.post@n2.nabble.com> "3.Are the audio filter options needed - would they enhance CW operation?? " JMHO but I have a contrarian opinion on the KAF2. I installed one but resold it after several months of use. I do a lot of weak signal work on 160 and have probably tried about every audio filter known to man. The ONLY one which actually helped me was the Audio Peak Filter (APF) first implemented in Yaesu's FT-1000D as an analog circuit. Elecraft, Icom and others have now made digital clones of APF in their newer rigs (e.g. K3, KX3, etc). Besides APF, I don't believe there is a better audio filter than your natural ear/brain combination. I've often fooled myself into thinking others helped but when I switched them off, I found there was no real S/N improvement to my ears. Another issue I disliked about the KAF2 was the RFI generated by the clock. If the clock was enabled, there was a "chuff chuff chuff" sound in the audio that was quite annoying (not to mention clock drift, the complexity of setting time, etc). Here are a few audio mods that I've made to my K2: 1. TF3MA's sidetone mod. This cleans up the sidetone to a more pure sinusoid, allowing better zero-beating by ear. Without it, I found it easy to zero beat on a spurious product. The improvement also does not fatigue my ears as much as before during extended operating. This one is definitely worth doing in my opinion. 2. TF3MA's LF audio cutoff mod. 3. JG1XLZ's KSB2 audio quality mod. (not needed for CW). I don't have time to find links for these but you should be able to find them in a keyword search. They are all free and simple to install once you have the parts. 73, Bill W4ZV -- Sent from: http://elecraft.365791.n2.nabble.com/ From monzi at netscape.net Sun Jan 6 08:44:16 2019 From: monzi at netscape.net (Rob Monsipapa) Date: Sun, 6 Jan 2019 13:44:16 +0000 (UTC) Subject: [Elecraft] Expert 1k-fa Solidae State AMP FS References: <775262561.13750371.1546782256507.ref@mail.yahoo.com> Message-ID: <775262561.13750371.1546782256507@mail.yahoo.com> I have two AMPs and this one is up for sale.?Expert 1K-FA Solid State AMP.? I am the 2nd owner.? I bought it at about?the same time I bought an OM-2000+ AMP.? I wasn't sure about the manual tune AMP but I'm getting there and the extra power of the OM is worth keeping.?For detailed information about the Expert 1K-FA AMP go here:http://www.expertlinears.com/pdfs/expert_1K_manual.pdf?Would prefer not to ship it if possible, local to Phoenix would be preferred.? Not interested in trades, cash only.?ThanksRob - AK7RMMesa AZ From f.belliveau at comcast.net Sun Jan 6 09:08:41 2019 From: f.belliveau at comcast.net (Francis Belliveau) Date: Sun, 6 Jan 2019 09:08:41 -0500 Subject: [Elecraft] KPA100 in EC2 Enclosure? In-Reply-To: <9d7dfb23-985b-a77f-da5b-87ba21837163@embarqmail.com> References: <9d7dfb23-985b-a77f-da5b-87ba21837163@embarqmail.com> Message-ID: <80F938DE-1896-4495-BF2A-8C4541EE1FF7@comcast.net> Eric, Don tells you what you need to do to make it possible, I want to expand on the utility of the result. Many of us like our QRP K2 setup. My K2 has the KAT installed for seamless QRP operations when that is what I want. I also have the KPA and KAT 100 pair installed in an EC2 so that when I want to operate QRO I reconnect cables, power up the amp and use the two boxes like they are one rig. Elecraft did a wonderful job and you will be very pleased with the result if you can get hold of that front panel like Don said. Fran > On Jan 4, 2019, at 23:15, Don Wilhelm wrote: > > Eric, > > Yes, it is possible to mount the KPA100 in an EC2 enclosure - If you already have the enclosure. Just mount it instead of the EC2 enclosure top cover. > > You will need to add a BNC connector to the lower rear panel of the EC2 so you can attach the coax from the K2 to the input coax of the KPA100. > > If you also want to add the KAT100, you will have to contact Elecraft sales to see if they have any of the E100142 - KAT100-2 Front panel and the E100143 - KAT100-2 rear panels left. If they have them, order those panels and the KAT100-1. You will also need E620012, x2 - 2 pin male, 0.156" spacing Male headers and E620040 - connector 10 pin (5x2) male connector 0.1" spacing. > > Make up the control cable shown in the KAT100 manual and you will be good to go. You need that control cable whether or not you have the KAT100. > > 73, > Don W3FPR > > On 1/4/2019 10:42 PM, Eric Norris wrote: >> Is it possible to build a KPA100 into an EC2 enclosure (I have one), and >> use all external connections between the K2 and the KPA100/EC2? In other >> words, make it plug and play? My K2 is serial #6000+, and has all the >> options including KDSP2 and KIO2. I removed the KBT2 just as it started to >> leak. :-) > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to f.belliveau at comcast.net From donwilh at embarqmail.com Sun Jan 6 09:26:46 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 6 Jan 2019 09:26:46 -0500 Subject: [Elecraft] FW: New customer message on December 14, 2018 at 02:22 AM In-Reply-To: <1546780854291-0.post@n2.nabble.com> References: <000001d4a42c$4a588ae0$df09a0a0$@gmail.com> <1546780854291-0.post@n2.nabble.com> Message-ID: <4cad81a0-2c78-efe6-87f5-e3820422924a@embarqmail.com> All, While Bill's comments are useful, I can say that the TF3MA sidetone mod is designed for the Rev A K2s (below SN 3000). Those K2s SN 3000 and above have improvements in the sidetone waveform shaping. If you have upgraded your K2 below SN 3000 with the A to B kit, then you have the same sidetone wave shaping as the newer K2s. I am not familiar with the TF3MA LP audio cutoff nor the JG1XLZ KSB2 audio quality mod, and cannot comment. 73, Don W3FPR On 1/6/2019 8:20 AM, Bill W4ZV wrote: > > Here are a few audio mods that I've made to my K2: > > 1. TF3MA's sidetone mod. This cleans up the sidetone to a more pure > sinusoid, allowing better zero-beating by ear. Without it, I found it easy > to zero beat on a spurious product. The improvement also does not fatigue > my ears as much as before during extended operating. This one is definitely > worth doing in my opinion. > > 2. TF3MA's LF audio cutoff mod. > > 3. JG1XLZ's KSB2 audio quality mod. (not needed for CW). > > I don't have time to find links for these but you should be able to find > them in a keyword search. They are all free and simple to install once you > have the parts. From donwilh at embarqmail.com Sun Jan 6 09:33:02 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 6 Jan 2019 09:33:02 -0500 Subject: [Elecraft] KX3 RX I/Q testing In-Reply-To: <1546745709079-0.post@n2.nabble.com> References: <1546745709079-0.post@n2.nabble.com> Message-ID: Kevin, The RX I/Q is at a low level, and is only usable for a panadapter like the KX3. It works for those applications because the signals are 90 degrees out of phase (which is what quadrature means). For Fldigi, and other soundcard data mode applications, use the Phones output to feed the soundcard Line In. 73, Don W3FPR On 1/5/2019 10:35 PM, Kevin F. wrote: > Does anyone know how to test the RX I/Q signal is coming out of the radio > correctly. I used the elecraft cables trying to listen to the signal using > my computer and didn't hear anything. I would like to be able to use this > output in fldigi for the waterfall. And still be able to listen to CW > signals, so that I can use the waterfall to tune the radio correctly. > > I'm remembering something about quadrature... not really sure. From btippett at alum.mit.edu Sun Jan 6 09:37:31 2019 From: btippett at alum.mit.edu (Bill W4ZV) Date: Sun, 6 Jan 2019 07:37:31 -0700 (MST) Subject: [Elecraft] TF3MA sidetone mod for K2 In-Reply-To: <4cad81a0-2c78-efe6-87f5-e3820422924a@embarqmail.com> References: <000001d4a42c$4a588ae0$df09a0a0$@gmail.com> <1546780854291-0.post@n2.nabble.com> <4cad81a0-2c78-efe6-87f5-e3820422924a@embarqmail.com> Message-ID: <1546785451505-0.post@n2.nabble.com> Don Wilhelm wrote > All, > > While Bill's comments are useful, I can say that the TF3MA sidetone mod > is designed for the Rev A K2s (below SN 3000). Those K2s SN 3000 and > above have improvements in the sidetone waveform shaping. If you have > upgraded your K2 below SN 3000 with the A to B kit, then you have the > same sidetone wave shaping as the newer K2s. > > I am not familiar with the TF3MA LP audio cutoff nor the JG1XLZ KSB2 > audio quality mod, and cannot comment. > > 73, > Don W3FPR > > On 1/6/2019 8:20 AM, Bill W4ZV wrote: >> >> Here are a few audio mods that I've made to my K2: >> >> 1. TF3MA's sidetone mod. This cleans up the sidetone to a more pure >> sinusoid, allowing better zero-beating by ear. Without it, I found it >> easy >> to zero beat on a spurious product. The improvement also does not >> fatigue >> my ears as much as before during extended operating. This one is >> definitely >> worth doing in my opinion. >> >> 2. TF3MA's LF audio cutoff mod. >> >> 3. JG1XLZ's KSB2 audio quality mod. (not needed for CW). >> >> I don't have time to find links for these but you should be able to find >> them in a keyword search. They are all free and simple to install once >> you >> have the parts. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: > Elecraft at .qth > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to > lists+1215531472858-365791 at .nabble Are you sure about that Don? Others with S/N above 3000 have noted the difference I did in #4119. Here's a thread from 2008, well past my 2004 vintage unit. http://elecraft.365791.n2.nabble.com/sidetone-mod-now-works-td395423.html 73, Bill W4ZV -- Sent from: http://elecraft.365791.n2.nabble.com/ From cqbilld at yahoo.com Sun Jan 6 09:53:43 2019 From: cqbilld at yahoo.com (Bill Davis) Date: Sun, 6 Jan 2019 14:53:43 +0000 (UTC) Subject: [Elecraft] Trouble downloading firmware update References: <2004532526.13752479.1546786423781.ref@mail.yahoo.com> Message-ID: <2004532526.13752479.1546786423781@mail.yahoo.com> "FtpFindFile completed with error 0x00002EE2: The operation timed out" Any ideas ?? A friend update his K3 no issues at the same time this morning. Bill K0AWU From rwnewbould at comcast.net Sun Jan 6 09:56:45 2019 From: rwnewbould at comcast.net (Rich) Date: Sun, 6 Jan 2019 09:56:45 -0500 Subject: [Elecraft] Diversity Question Message-ID: When using diversity receive and using headphones, are both receivers blended into both ears or is the Main in the L and Sub in the R My old ears cannot tell LOL Rich K3RWN From sue.walt at dososaur.com Sun Jan 6 10:00:31 2019 From: sue.walt at dososaur.com (Walter J. Legowski) Date: Sun, 6 Jan 2019 15:00:31 +0000 Subject: [Elecraft] KPA1500 Utility for Linux Message-ID: Now that I know about the need to update the firmware and the utility, I noticed that the Linux version of the utility is still from last June. It thinks that firmware version 1.87 is up-to-date, and knows nothing about version 2.0. Walt, WA1KKM From nr4c at widomaker.com Sun Jan 6 10:19:54 2019 From: nr4c at widomaker.com (Nr4c) Date: Sun, 6 Jan 2019 10:19:54 -0500 Subject: [Elecraft] Diversity Question In-Reply-To: References: Message-ID: <73F15DF9-14AC-4604-AD56-06B3D866F203@widomaker.com> Main L/Sub R Sent from my iPhone ...nr4c. bill > On Jan 6, 2019, at 9:56 AM, Rich wrote: > > When using diversity receive and using headphones, are both receivers blended into both ears or is the Main in the L and Sub in the R > > My old ears cannot tell LOL > > Rich > > K3RWN > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From dflem at yahoo.com Sun Jan 6 10:22:00 2019 From: dflem at yahoo.com (David Fleming) Date: Sun, 6 Jan 2019 15:22:00 +0000 (UTC) Subject: [Elecraft] KPA1500 Utility for Linux In-Reply-To: References: Message-ID: <1261403438.13797705.1546788120856@mail.yahoo.com> Hi Walt, There's no need to update the KPA1500 Utility to update the firmware. Click the "Copy New Files from Elecraft" button to download the new firmware to your computer, then click "Send Firmware to KPA1500". David, W4SMT ------- On Sunday, January 6, 2019, 10:01:21 AM EST, Walter J. Legowski wrote:? Now that I know about the need to update the firmware and the utility, I? noticed that the Linux version of the utility is still from last June. It thinks that firmware version 1.87 is up-to-date, and knows nothing about version 2.0. Walt, WA1KKM From tony.kaz at verizon.net Sun Jan 6 10:50:05 2019 From: tony.kaz at verizon.net (N2TK, Tony) Date: Sun, 6 Jan 2019 10:50:05 -0500 Subject: [Elecraft] KPA100 failure In-Reply-To: <26f6bfc3-9892-6ab1-f98c-1f29e5a4c805@embarqmail.com> References: <02B104C7-9675-4C68-A75C-90C3739DEB31@gmail.com> <0384a108-d24d-927f-cb95-2d72e276eadf@embarqmail.com> <26f6bfc3-9892-6ab1-f98c-1f29e5a4c805@embarqmail.com> Message-ID: <056a01d4a5d7$7e91e7f0$7bb5b7d0$@verizon.net> Don, You are correct about Schottky diodes such as the 1N5711. Don't just trust using an ohmmeter. They are not typical PN bipolar devices like diodes such as the 1N5811. We actually do some tests as if they are a FET. They are so cheap, that if you suspect an issue, just replace them. 73, N2TK, Tony -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Don Wilhelm Sent: Saturday, January 05, 2019 4:12 PM To: Paul Wilton Cc: Elecraft Discussion List Subject: Re: [Elecraft] KPA100 failure Paul, Sometimes it is just better to replace D16 and D17 than to trust them to an ohmmeter reading. They can be "half bad" - OK at DC, but not at RF. They are 1N5711 diodes. If you have the latest updates, the oscillation is not a concern unless you have a T/R switch problem. If your thermal pads look OK, reuse them. they already have conformed to the slight contours of the heatsink and PA transistor surfaces. Just be sure to put then back the same way they were - they usually stick to the heatsink, so re=positioning them is not a problem. Measure those 22 ohm resistors to make certain they have not changed value due to overheating. 73, Don W3FPR On 1/5/2019 3:55 PM, Paul Wilton wrote: > Don > Thanks for the helpful pointers. > > Although I didn?t build the KPA100, I did have to fix a few items > before it worked. It has got all the updates. > > I have checked D16 and D17 - they are OK. > > I?ll check for oscillations - should be easy to spot at 8MHz on an SDR > > The PA transistors do appear to be tight. However, I have a spare > pair of pads so I?ll replace them since I?ll take to undo the heatsink > to put the resistors back. I?ll also check out the T/R switch when I > recommission everything - I was aware of the changes to the manual thanks. > > Hopefully I will be able to do these over the next couple of evenings. > And I?ll pay attention to the 10s max power spec! > > Thanks again > > 73 > > Paul > M1CNK > > > > > >> On 5 Jan 2019, at 20:12, Don Wilhelm > > wrote: >> >> Paul, >> >> I have three possible guesses. >> First is that the KPA100 was developing the full power output that it >> is capable of (often 180 watts) because the wattmeter diodes D16 and >> D17 have been damaged by static (wind, rain, snow, or nearby lightning). >> If those diodes are damaged the MCU thinks there is no power output >> and drives to it full power capability. If left to continue, the PA >> transistors in the base K2 will eventually destroy themselves. The >> PA transistors in the KPA100 are quite hardy and seldom need to be >> replaced (I have only replaced 1 set in the last 14 years of >> repairing K2s). >> >> The 2nd possibility is that there is some oscillation. That can >> happen more frequently on 40 meters, and the KPA100 tries to transmit >> at about 8 MHz. Be certain your KPA100 is at the latest level. If >> you have blue toroid cores at RFC1 and L16 it is the latest. If not >> the latest, upgrade it with the KPA100UPKT. >> >> Thirdly, were the PA transistors tight? If not, the PA transistors >> will heat the board around the transistors and not be thermally >> coupled to the heatsink. Are the thermal pads properly in place? >> After initial assembly (and anytime afterwards if the thermal pads >> are changed) you must re-tighten the screws after about 10 hours of >> operation at high power. >> >> A 4th possibility is that you have a problem in the T/R switch. >> After you get it up and running, do the Diode Voltage checks in the >> manual. If you have an older manual but have the latest upgrade >> installed, use the chart in the KPA100UPKT instructions rather than >> what is in your manual. >> >> Note well, the KPA100 is rated for only 10 seconds of keydown power >> at 100 watts, so you did exceed its maximum rating. >> >> If you melted the fuseholder without blowing the fuse, you may have >> had bad contact from the wire to the fuse. That would also result in >> a low voltage to the KPA100 and cause it to draw greater than the >> normal amount of current because the K2 controls try to keep the >> power constant - less voltage requires more current for the same power. >> >> Hopefully some of that information will answer your question. >> Do all initial testing into a dummy load and not an antenna and >> bypass the KAT100 by connecting the dummy load (and perhaps a >> wattmeter) directly to the KPA100 - remove the coax between the >> KPA100 RF out and the KAT100 RF IN jacks. >> >> 73,, >> Don W3FPR >> >> >> >> On 1/5/2019 2:34 PM, Paul Wilton wrote: >>> I was using my KPA100/KAT100 combination today to check out some >>> changes to my OCFD antenna. Previously I have had problems with the >>> balun heating up and the SWR increasing over an extended transmit on >>> 7MHz (eg 50w on an FT8 over). I have made an improvement to my >>> OCFD antenna by adding another choke to reduce the common mode >>> current. So in order to test it out, I planned to run 100w CW for >>> 15-30seconds watching the SWR meter on the KAT100 to see if I was >>> going to get the SWR increase. This was done with a ?cold? PA. >>> So I started the test and unlikely previously, the SWR remained >>> good. However at about the 30s mark, I saw some smoke coming from >>> the KPA100 and then it went dead. It also melted my fuseholder in >>> the PA supply (although didn?t actually blow the fuse). >>> I have opened up the KPA100 only to find that the two 22R power >>> resistors around the two final transistors (R38 and R39) have both >>> unsoldered themselves from the board and were lying in the bottom of >>> the case! >>> Clearly it is an easy job just to put them in again but before doing >>> so I want to try and understand what is happening So a few >>> questions: >>> a) I am hoping that my two finals are still OK. Is there a simple >>> test I can do perform applying power? Using a DMM in resistance >>> mode, I measure approx 2M between collector and emitter and 11.2R >>> between base and emitter (other than the missing 22R resistors I >>> haven?t disconnected anything else). >>> b) Any idea what could have caused that much heat that the two >>> resistors unsoldered themselves? It can?t be a DC failure since >>> there is a capacitor blocking the path in the event of a PA >>> transistor shorting to ground. I am concerned that there is some >>> sort of oscillation going on ie the PA is starting to hoot. >>> c) Any advice on how to proceed? > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to tony.kaz at verizon.net From barrylazar2 at gmail.com Sun Jan 6 11:14:46 2019 From: barrylazar2 at gmail.com (Barry) Date: Sun, 06 Jan 2019 16:14:46 +0000 Subject: [Elecraft] KX3 RX I/Q testing In-Reply-To: <1546749756256-0.post@n2.nabble.com> References: <1546745709079-0.post@n2.nabble.com> <1546749756256-0.post@n2.nabble.com> Message-ID: See the note I just sent you. You may have not turned on I&Q output. That is my suspicion. 73, Barry K3NDM ------ Original Message ------ From: "Kevin F." To: elecraft at mailman.qth.net Sent: 1/5/2019 11:42:36 PM Subject: Re: [Elecraft] KX3 RX I/Q testing >Thanks for the prompt reply, I guess the question that I would like to answer >is, if I were to plug in to both sides of the RX I/Q port should I hear >anything at all? If I shouldn't then great, if I should then I'm going to >need to figure out what's going on with my radio such that I can't heard >anything at all... > > > >-- >Sent from: http://elecraft.365791.n2.nabble.com/ >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft at mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html >Message delivered to barrylazar2 at gmail.com From bob at hogbytes.com Sun Jan 6 11:21:23 2019 From: bob at hogbytes.com (Bob N3MNT) Date: Sun, 6 Jan 2019 09:21:23 -0700 (MST) Subject: [Elecraft] KX3 RX I/Q testing In-Reply-To: References: <1546745709079-0.post@n2.nabble.com> <1546749756256-0.post@n2.nabble.com> Message-ID: <1546791683539-0.post@n2.nabble.com> See Menu section of manual. RX I/Q needs to be turned on. RX I/Q OFF Set to ON to use the KX3?s RX I/Q jack with the Elecraft PX3 Panadapter, or with SDR (software-defined radio) applications (pg. 26). -- Sent from: http://elecraft.365791.n2.nabble.com/ From donwilh at embarqmail.com Sun Jan 6 11:21:29 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 6 Jan 2019 11:21:29 -0500 Subject: [Elecraft] Diversity Question In-Reply-To: References: Message-ID: Rich, It is main in the left and Sub in the right. Your brain figures it out and concentrates on the best signal. You do need diversity antennas - such as one horizontal and one vertical, there are other combinations but the antennas need to be separated in space or polarization. The non-transmit antenna connects to the AUX antenna input of the SubRX. 73, Don W3FPR On 1/6/2019 9:56 AM, Rich wrote: > When using diversity receive and using headphones, are both receivers > blended into both ears or is the Main in the L and Sub in the R > > My old ears cannot tell LOL From la9nea at gmail.com Sun Jan 6 11:59:53 2019 From: la9nea at gmail.com (Viggo Magnus Nilsen Nilsen) Date: Sun, 6 Jan 2019 17:59:53 +0100 Subject: [Elecraft] KAT 500 and open wire Message-ID: Hello Elecrafters, Do some of you using KAT500 with open wire,ladder line feed to ur wire antennas with balun (outside the tuner) ? working ok ? 73' LA9NEA Viggo M. From kengkopp at gmail.com Sun Jan 6 12:08:38 2019 From: kengkopp at gmail.com (Ken G Kopp) Date: Sun, 6 Jan 2019 10:08:38 -0700 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: References: Message-ID: Yes Viggo I use an open wire CF Zepp via a 4:1 balun with my KAT500. It works great. (:-)) 73 K0PP On Sun, Jan 6, 2019, 10:01 Viggo Magnus Nilsen Nilsen Hello Elecrafters, > > Do some of you using KAT500 with open wire,ladder line feed to ur wire > antennas with balun (outside the tuner) ? working ok ? > > 73' LA9NEA Viggo M. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to kengkopp at gmail.com > From rwnewbould at comcast.net Sun Jan 6 13:24:51 2019 From: rwnewbould at comcast.net (Rich) Date: Sun, 6 Jan 2019 13:24:51 -0500 Subject: [Elecraft] Diversity Question In-Reply-To: References: Message-ID: <947c3492-807e-a435-55d8-8048c31f3c73@comcast.net> Thanks to all.?? I do have a horiz RX only antenna.?? I just could not figure out how it handled the audio Rich On 1/6/2019 11:21 AM, Don Wilhelm wrote: > Rich, > > It is main in the left and Sub in the right.? Your brain figures it > out and concentrates on the best signal. > You do need diversity antennas - such as one horizontal and one > vertical, there are other combinations but the antennas need to be > separated in space or polarization. > The non-transmit antenna connects to the AUX antenna input of the SubRX. > > 73, > Don W3FPR > > On 1/6/2019 9:56 AM, Rich wrote: >> When using diversity receive and using headphones, are both receivers >> blended into both ears or is the Main in the L and Sub in the R >> >> My old ears cannot tell LOL > From ars.nc0jw at gmail.com Sun Jan 6 14:35:10 2019 From: ars.nc0jw at gmail.com (Jim White NC0JW) Date: Sun, 6 Jan 2019 12:35:10 -0700 Subject: [Elecraft] Elecraft SSB Net for Sunday January 6, 2019 Message-ID: <3505A968-F8A7-4D31-B75D-04A13A59E059@gmail.com> The first Elecraft SSB net of 2019 saw twenty one check ins handled today by Phil NS7P and Roger N4NRW in the absence of our regular Net Control Staton Eric WB9JNZ. Phil was able in check in Peter ZL1PWD from New Zealand today. Thanks Phil and Roger for your efforts. Today?s check ins included: KS6F Guy CA K3S 10650 K9YEQ Bill WI K3S 11140 w/KPA1500 N4NRW Roger SC K3 1318 NS7P Phil OR K3 1826 K4GCJ Gerry NC K3 1597 K7BRR Bill AZ K3S 10939 W9PCS Paul WI K3S 10752 K6SBA Dave CA K3 565 K8NU/P7 Carl OH K3S 10996 w/KPA1500 ZL1PWD Peter NZ K3 139 K6FW Frank CA K3S 11672 K9YEQ Bill WI KX3 12 10 watts WA0BEU Keith CO KX3 7048 K7JG John WA KX3 3519 N0MPM Mike IA K3S 10514 WM5F Dwight ID KX3 8045 KL7BR Rick ID KX3 3160 W7REK Glenn AZ K3 2843 K7SEN Neal AZ K3 6331 KG5OED Ross OK Kenwood 520S NC0JW Jim CO 1356 Drop on by next Sunday at 1800 UTC on or about 14.3035 MHz. when our Net Control Station Eric WB9JNZ in Chicago, IL kicks things off. With propagation at a low point we employ several relay stations located around the continental USA to assist with check ins. As conditions permit we take questions and comments after check ins. Jim White - NC0JW Colorado Spring, CO ars.nc0jw at gmail.com From rmcgraw at blomand.net Sun Jan 6 14:42:32 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sun, 6 Jan 2019 13:42:32 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: References: Message-ID: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> Yes I use a balanced feed line being the "window" type line.?? It feeds a 250 ft wire in the center at 50 feet.? I have about 75 ft of feed line from the center of the antenna then,? through the attic eve vent, supported on some wooden hangers I made and attached to the roof rafters.?? Then it drops through the ceiling to the balun which sits on the shelf above the KPA500 and the KAT500.?? The balun is a Balun Designs 1:1 ATU current balun rated at 5 kW being model 1171t.??? I use a common mode choke, being model 8232 purchased from The Wireman. ? It runs from the balun to one of the tuner 3 outputs.?? Works great from 160M through 10M. Of note, I am on the 2nd floor of a wood frame house more in the center.? No windows or walls to the outside.? ? I do not use any type of "station ground" to the outside.? I do have lightning protection devices where the feed lines and rotor lines enter the house.?? As the antenna and feed line is quite well balanced, there is no RF radiation in the shack an thus no RF issues with computers, phones, TV's, surround sound systems, and such.?? Each piece of station equipment is bonded to the station power supply ground terminal using a dedicated ground jumper.?? The 3rd pin AC ground is maintained and the amp runs from a dedicated 240 VAC circuit. Works great! 73 Bob, K4TAX On 1/6/2019 10:59 AM, Viggo Magnus Nilsen Nilsen wrote: > Hello Elecrafters, > > Do some of you using KAT500 with open wire,ladder line feed to ur wire > antennas with balun (outside the tuner) ? working ok ? > > 73' LA9NEA Viggo M. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From k9ma at sdellington.us Sun Jan 6 15:17:46 2019 From: k9ma at sdellington.us (K9MA) Date: Sun, 6 Jan 2019 14:17:46 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> Message-ID: <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> Using a? balun with balanced line is risky. Window line or open line can be used with reasonable losses up to at least a 10:1 SWR, but that means the impedance at the balun output could be anywhere from 30 to 3000 Ohms (for 300 Ohm line). The current balun should work if the impedance at the balun output is low, not much over 50 Ohms. This is hard to measure, but modeling should give a close enough value. On the other hand, the impedance could be thousands of Ohms, and that kind of balun will be ineffective. Transformer-type baluns have limitations at both high and low impedances. While a transformer type balun could overheat and/or generate harmonics, I suppose the worst thing a current balun could do is to upset the balance. I've you're not seeing a lot of "RF in the shack", you're probably good. The only really reliable way to feed unmatched balanced line is with a truly balanced tuner, a seriously endangered species. I'm still using the one I built almost 50 years ago. 73, Scott K9MA On 1/6/2019 13:42, Bob McGraw K4TAX wrote: > Yes I use a balanced feed line being the "window" type line.?? It > feeds a 250 ft wire in the center at 50 feet.? I have about 75 ft of > feed line from the center of the antenna then,? through the attic eve > vent, supported on some wooden hangers I made and attached to the roof > rafters.?? Then it drops through the ceiling to the balun which sits > on the shelf above the KPA500 and the KAT500.?? The balun is a Balun > Designs 1:1 ATU current balun rated at 5 kW being model 1171t.??? I > use a common mode choke, being model 8232 purchased from The Wireman. > ? It runs from the balun to one of the tuner 3 outputs.?? Works great > from 160M through 10M. > > Of note, I am on the 2nd floor of a wood frame house more in the > center.? No windows or walls to the outside.? ? I do not use any type > of "station ground" to the outside.? I do have lightning protection > devices where the feed lines and rotor lines enter the house.?? As the > antenna and feed line is quite well balanced, there is no RF radiation > in the shack an thus no RF issues with computers, phones, TV's, > surround sound systems, and such.?? Each piece of station equipment is > bonded to the station power supply ground terminal using a dedicated > ground jumper.?? The 3rd pin AC ground is maintained and the amp runs > from a dedicated 240 VAC circuit. > > Works great! > > 73 > > Bob, K4TAX > > > On 1/6/2019 10:59 AM, Viggo Magnus Nilsen Nilsen wrote: >> Hello Elecrafters, >> >> Do some of you using KAT500 with open wire,ladder line feed to ur wire >> antennas with balun? (outside the tuner) ? working ok ? >> >> 73' LA9NEA? Viggo M. >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to rmcgraw at blomand.net >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9ma at sdellington.us -- Scott K9MA k9ma at sdellington.us From sdonnell2 at comcast.net Sun Jan 6 16:36:25 2019 From: sdonnell2 at comcast.net (fyredude901) Date: Sun, 6 Jan 2019 14:36:25 -0700 (MST) Subject: [Elecraft] KPA500 - Not Going To Full Power Message-ID: <1546810585905-0.post@n2.nabble.com> Received my KPA 500 / KAT500 combo for Christmas. Got them hooked up and they were working like a charm and have for several days. I am mostly on digital and will typically run around 300 watts out. I am using a Flexradio 6500 and my output on it is around 22 watts. Today, I pushed the output up to around 27 (which drove the amp over 310 watts). At that time, the power meter started surging (sorry, best way that I can think to describe it). It amp never went above 310, but it was like the power was being cycled on and off to the unit. The output was pulsing high and low. When I backed the Flex back down to 22 watts, and the output of the amp was 300 or less, this issue stopped. I am assuming it is the protection system for the amp. Still, I would like to know what the possible cause of this likely is so that I can troubleshoot and fix it. Any advice that can be provided would be greatly appreciated!! 73 KD9EGK -- Sent from: http://elecraft.365791.n2.nabble.com/ From donwilh at embarqmail.com Sun Jan 6 16:40:11 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 6 Jan 2019 16:40:11 -0500 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> Message-ID: <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> All, I think a bit of extended study on transmission lines and their impedance transformation characteristics is in order - refer to any ARRL antenna book, even those from the 1950 an 1960 era, not much new has been added, other than baluns. The feedpoint impedance to the transmission line can vary from quite low to quite high dependent on the frequency, the length of line, and the load at the far end. It does NOT depend on the characteristic impedance of the transmission line. The ARRL TLW program can do a lot of computation for you. You may be able to adjust the length of the transmission line so there is a moderate shack end feedpoint impedance on all bands of interest and be able to use a good current balun which has either a 1:1 or 4:1 transformation ratio. You have to measure the transmission line at the point where you intend to install the balun to be sure which to use. Yes, just hanging any balun on any length of parallel feedline connected to any length of antenna and expecting it to work without problems is just not going to happen in all but exceptional cases. How many cases where you see "this antenna works great" do you see any mention of how long the parallel feedline may be. Most hams simply ignore that, but it is likely the most important part of how the antenna works and what type of balun of you need to use. Your experience may be very different with the "same" multiband antenna than your local ham or that in the article you read unless the feedline length and type is know. I do not see many antenna articles where the feedline length is mentioned if it is parallel feedline. With resonant antennas, the feedline length does not matter as long as the feedpoint impedance of the radiator is the same as the characteristic impedance of the feedline. In those cases, the feedline length does not matter, but in all other cases, it matters a lot. 73, Don W3FPR On 1/6/2019 3:17 PM, K9MA wrote: > Using a? balun with balanced line is risky. Window line or open line can > be used with reasonable losses up to at least a 10:1 SWR, but that means > the impedance at the balun output could be anywhere from 30 to 3000 Ohms > (for 300 Ohm line). The current balun should work if the impedance at > the balun output is low, not much over 50 Ohms. This is hard to measure, > but modeling should give a close enough value. On the other hand, the > impedance could be thousands of Ohms, and that kind of balun will be > ineffective. Transformer-type baluns have limitations at both high and > low impedances. > > While a transformer type balun could overheat and/or generate harmonics, > I suppose the worst thing a current balun could do is to upset the > balance. I've you're not seeing a lot of "RF in the shack", you're > probably good. > > The only really reliable way to feed unmatched balanced line is with a > truly balanced tuner, a seriously endangered species. I'm still using > the one I built almost 50 years ago. > > 73, > Scott K9MA > From rmcgraw at blomand.net Sun Jan 6 16:41:35 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sun, 6 Jan 2019 15:41:35 -0600 Subject: [Elecraft] KPA500 - Not Going To Full Power In-Reply-To: <1546810585905-0.post@n2.nabble.com> References: <1546810585905-0.post@n2.nabble.com> Message-ID: First would seem that something in the antenna system is causing a problem.??? I run my KPA500 & KAT500 at 450 to 550 watts out without any issues.? What's the antenna and feed line being used? ? What bands?? Is the output of the FLEX surging as well? 73 Bob, K4TAX On 1/6/2019 3:36 PM, fyredude901 wrote: > Received my KPA 500 / KAT500 combo for Christmas. Got them hooked up and > they were working like a charm and have for several days. I am mostly on > digital and will typically run around 300 watts out. I am using a Flexradio > 6500 and my output on it is around 22 watts. Today, I pushed the output up > to around 27 (which drove the amp over 310 watts). At that time, the power > meter started surging (sorry, best way that I can think to describe it). It > amp never went above 310, but it was like the power was being cycled on and > off to the unit. The output was pulsing high and low. When I backed the > Flex back down to 22 watts, and the output of the amp was 300 or less, this > issue stopped. I am assuming it is the protection system for the amp. > Still, I would like to know what the possible cause of this likely is so > that I can troubleshoot and fix it. Any advice that can be provided would > be greatly appreciated!! > > 73 > KD9EGK > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From rmcgraw at blomand.net Sun Jan 6 16:51:05 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sun, 6 Jan 2019 15:51:05 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> Message-ID: Correct on all points. That is the reason I gave my feedline type, and length and antenna length alone with specific balun type and common mode choke type.?? Any old ragged combination of chunks of wire and feed line is not assured to work and is largely the reason many hams shy away from balanced feed systems.???? They tried it once, it didn't work well? thus they deemed all balanced feed systems as being "bad".?? While the facts are, a balanced system correctly installed and with correct lengths, it is the lowest loss feed of any system reasonably available.?? Which is one of the reasons most short wave broadcast stations used balanced feed systems. 73 Bob, K4TAX On 1/6/2019 3:40 PM, Don Wilhelm wrote: > All, > > I think a bit of extended study on transmission lines and their > impedance transformation characteristics is in order - refer to any > ARRL antenna book, even those from the 1950 an 1960 era, not much new > has been added, other than baluns.? The feedpoint impedance to the > transmission line can vary from quite low to quite high dependent on > the frequency, the length of line, and the load at the far end.? It > does NOT depend on the characteristic impedance of the transmission > line.? The ARRL TLW program can do a lot of computation for you. > > You may be able to adjust the length of the transmission line so there > is a moderate shack end feedpoint impedance on all bands of interest > and be able to use a good current balun which has either a 1:1 or 4:1 > transformation ratio.? You have to measure the transmission line at > the point where you intend to install the balun to be sure which to use. > > Yes, just hanging any balun on any length of parallel feedline > connected to any length of antenna and expecting it to work without > problems is just not going to happen in all but exceptional cases. > How many cases where you see "this antenna works great" do you see any > mention of how long the parallel feedline may be.? Most hams simply > ignore that, but it is likely the most important part of how the > antenna works and what type of balun of you need to use. > > Your experience may be very different with the "same" multiband > antenna than your local ham or that in the article you read unless the > feedline length and type is know.? I do not see many antenna articles > where the feedline length is mentioned if it is parallel feedline. > > With resonant antennas, the feedline length does not matter as long as > the feedpoint impedance of the radiator is the same as the > characteristic impedance of the feedline.? In those cases, the > feedline length does not matter, but in all other cases, it matters a > lot. > > 73, > Don W3FPR > > On 1/6/2019 3:17 PM, K9MA wrote: >> Using a? balun with balanced line is risky. Window line or open line >> can be used with reasonable losses up to at least a 10:1 SWR, but >> that means the impedance at the balun output could be anywhere from >> 30 to 3000 Ohms (for 300 Ohm line). The current balun should work if >> the impedance at the balun output is low, not much over 50 Ohms. This >> is hard to measure, but modeling should give a close enough value. On >> the other hand, the impedance could be thousands of Ohms, and that >> kind of balun will be ineffective. Transformer-type baluns have >> limitations at both high and low impedances. >> >> While a transformer type balun could overheat and/or generate >> harmonics, I suppose the worst thing a current balun could do is to >> upset the balance. I've you're not seeing a lot of "RF in the shack", >> you're probably good. >> >> The only really reliable way to feed unmatched balanced line is with >> a truly balanced tuner, a seriously endangered species. I'm still >> using the one I built almost 50 years ago. >> >> 73, >> Scott K9MA >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From donwilh at embarqmail.com Sun Jan 6 17:03:29 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 6 Jan 2019 17:03:29 -0500 Subject: [Elecraft] KPA500 - Not Going To Full Power In-Reply-To: <1546810585905-0.post@n2.nabble.com> References: <1546810585905-0.post@n2.nabble.com> Message-ID: What happens if you use CW or a constant carrier. Data modes throw the proverbial "wrench" into the works because there are so many, each with different characteristics. Test with CW mode or a constant keydown (for a reasonable time - 30 seconds or so) and see what happens. If that condition happens with CW, then take the KAT500 out of the situation and operate the KPA500 into a dummy load. Is it OK up to 500 watts or more? If OK, the KPA500 and your Flex is OK - focus on the KAT500. Did you train the KAT500 to your antenna(s) while in AUTO mode, then switch the KAT500 to MAN mode? If not try that. It may be that at higher power, something in your antenna system is breaking down and the KAT500 (if left in AUTO) is trying to tune, which will break the keying line to the KPA500 if cabled correctly until the tune is completed. My bet is on something is changing in your antenna system at higher power - look for arc points, end insulators, and possible loose connectors (PL-259 connectors should be just a bit more than finger tight, use pliers lightly). If you are using a balun, is it arcing inside? Did it gather a bit of moisture inside? Are you exceeding its saturation point - a good possibility if you are using a balun to transition to a parallel feedline as might be the case with a commercial G5RV antenna. The very best test is to establish what happens into a dummy load. 73, Don W3FPR 73, Don W3FPR On 1/6/2019 4:36 PM, fyredude901 wrote: > Received my KPA 500 / KAT500 combo for Christmas. Got them hooked up and > they were working like a charm and have for several days. I am mostly on > digital and will typically run around 300 watts out. I am using a Flexradio > 6500 and my output on it is around 22 watts. Today, I pushed the output up > to around 27 (which drove the amp over 310 watts). At that time, the power > meter started surging (sorry, best way that I can think to describe it). It > amp never went above 310, but it was like the power was being cycled on and > off to the unit. The output was pulsing high and low. When I backed the > Flex back down to 22 watts, and the output of the amp was 300 or less, this > issue stopped. I am assuming it is the protection system for the amp. > Still, I would like to know what the possible cause of this likely is so > that I can troubleshoot and fix it. Any advice that can be provided would > be greatly appreciated!! From W2xj at w2xj.net Sun Jan 6 17:09:24 2019 From: W2xj at w2xj.net (W2xj) Date: Sun, 6 Jan 2019 17:09:24 -0500 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> Message-ID: <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> And those broadcast stations generally work within a 2:1 VSWR range. Sent from my iPad > On Jan 6, 2019, at 4:51 PM, Bob McGraw K4TAX wrote: > > Correct on all points. > > That is the reason I gave my feedline type, and length and antenna length alone with specific balun type and common mode choke type. Any old ragged combination of chunks of wire and feed line is not assured to work and is largely the reason many hams shy away from balanced feed systems. They tried it once, it didn't work well thus they deemed all balanced feed systems as being "bad". While the facts are, a balanced system correctly installed and with correct lengths, it is the lowest loss feed of any system reasonably available. Which is one of the reasons most short wave broadcast stations used balanced feed systems. > > 73 > > Bob, K4TAX > > >> On 1/6/2019 3:40 PM, Don Wilhelm wrote: >> All, >> >> I think a bit of extended study on transmission lines and their impedance transformation characteristics is in order - refer to any ARRL antenna book, even those from the 1950 an 1960 era, not much new has been added, other than baluns. The feedpoint impedance to the transmission line can vary from quite low to quite high dependent on the frequency, the length of line, and the load at the far end. It does NOT depend on the characteristic impedance of the transmission line. The ARRL TLW program can do a lot of computation for you. >> >> You may be able to adjust the length of the transmission line so there is a moderate shack end feedpoint impedance on all bands of interest and be able to use a good current balun which has either a 1:1 or 4:1 transformation ratio. You have to measure the transmission line at the point where you intend to install the balun to be sure which to use. >> >> Yes, just hanging any balun on any length of parallel feedline connected to any length of antenna and expecting it to work without problems is just not going to happen in all but exceptional cases. >> How many cases where you see "this antenna works great" do you see any mention of how long the parallel feedline may be. Most hams simply ignore that, but it is likely the most important part of how the antenna works and what type of balun of you need to use. >> >> Your experience may be very different with the "same" multiband antenna than your local ham or that in the artic From k9ma at sdellington.us Sun Jan 6 17:11:54 2019 From: k9ma at sdellington.us (K9MA) Date: Sun, 6 Jan 2019 16:11:54 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> Message-ID: <6e4819aa-a6ec-d02a-d415-dcb3efb46288@sdellington.us> Well said, Don! 73, Scott K9MA On 1/6/2019 15:40, Don Wilhelm wrote: > All, > > I think a bit of extended study on transmission lines and their > impedance transformation characteristics is in order - refer to any > ARRL antenna book, even those from the 1950 an 1960 era, not much new > has been added, other than baluns.? The feedpoint impedance to the > transmission line can vary from quite low to quite high dependent on > the frequency, the length of line, and the load at the far end.? It > does NOT depend on the characteristic impedance of the transmission > line.? The ARRL TLW program can do a lot of computation for you. > > You may be able to adjust the length of the transmission line so there > is a moderate shack end feedpoint impedance on all bands of interest > and be able to use a good current balun which has either a 1:1 or 4:1 > transformation ratio.? You have to measure the transmission line at > the point where you intend to install the balun to be sure which to use. > > Yes, just hanging any balun on any length of parallel feedline > connected to any length of antenna and expecting it to work without > problems is just not going to happen in all but exceptional cases. > How many cases where you see "this antenna works great" do you see any > mention of how long the parallel feedline may be.? Most hams simply > ignore that, but it is likely the most important part of how the > antenna works and what type of balun of you need to use. > > Your experience may be very different with the "same" multiband > antenna than your local ham or that in the article you read unless the > feedline length and type is know.? I do not see many antenna articles > where the feedline length is mentioned if it is parallel feedline. > > With resonant antennas, the feedline length does not matter as long as > the feedpoint impedance of the radiator is the same as the > characteristic impedance of the feedline.? In those cases, the > feedline length does not matter, but in all other cases, it matters a > lot. > > 73, > Don W3FPR > > On 1/6/2019 3:17 PM, K9MA wrote: >> Using a? balun with balanced line is risky. Window line or open line >> can be used with reasonable losses up to at least a 10:1 SWR, but >> that means the impedance at the balun output could be anywhere from >> 30 to 3000 Ohms (for 300 Ohm line). The current balun should work if >> the impedance at the balun output is low, not much over 50 Ohms. This >> is hard to measure, but modeling should give a close enough value. On >> the other hand, the impedance could be thousands of Ohms, and that >> kind of balun will be ineffective. Transformer-type baluns have >> limitations at both high and low impedances. >> >> While a transformer type balun could overheat and/or generate >> harmonics, I suppose the worst thing a current balun could do is to >> upset the balance. I've you're not seeing a lot of "RF in the shack", >> you're probably good. >> >> The only really reliable way to feed unmatched balanced line is with >> a truly balanced tuner, a seriously endangered species. I'm still >> using the one I built almost 50 years ago. >> >> 73, >> Scott K9MA >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9ma at sdellington.us -- Scott K9MA k9ma at sdellington.us From k9ma at sdellington.us Sun Jan 6 17:15:38 2019 From: k9ma at sdellington.us (K9MA) Date: Sun, 6 Jan 2019 16:15:38 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> Message-ID: <438d5198-c649-3487-3921-16210561d83a@sdellington.us> The really attractive thing about open line, and even window line, is that its loss is so low you can use it at a very high SWR, and take care of the matching at the station end. This is especially useful for multi-band antennas. The famous G5RV, for example, will work just exactly the same fed with window line and a tuner as it will with the usual matching section. 73, Scott K9MA On 1/6/2019 16:09, W2xj wrote: > And those broadcast stations generally work within a 2:1 VSWR range. > > Sent from my iPad > >> On Jan 6, 2019, at 4:51 PM, Bob McGraw K4TAX wrote: >> >> Correct on all points. >> >> That is the reason I gave my feedline type, and length and antenna length alone with specific balun type and common mode choke type. Any old ragged combination of chunks of wire and feed line is not assured to work and is largely the reason many hams shy away from balanced feed systems. They tried it once, it didn't work well thus they deemed all balanced feed systems as being "bad". While the facts are, a balanced system correctly installed and with correct lengths, it is the lowest loss feed of any system reasonably available. Which is one of the reasons most short wave broadcast stations used balanced feed systems. >> >> 73 >> >> Bob, K4TAX >> >> >>> On 1/6/2019 3:40 PM, Don Wilhelm wrote: >>> All, >>> >>> I think a bit of extended study on transmission lines and their impedance transformation characteristics is in order - refer to any ARRL antenna book, even those from the 1950 an 1960 era, not much new has been added, other than baluns. The feedpoint impedance to the transmission line can vary from quite low to quite high dependent on the frequency, the length of line, and the load at the far end. It does NOT depend on the characteristic impedance of the transmission line. The ARRL TLW program can do a lot of computation for you. >>> >>> You may be able to adjust the length of the transmission line so there is a moderate shack end feedpoint impedance on all bands of interest and be able to use a good current balun which has either a 1:1 or 4:1 transformation ratio. You have to measure the transmission line at the point where you intend to install the balun to be sure which to use. >>> >>> Yes, just hanging any balun on any length of parallel feedline connected to any length of antenna and expecting it to work without problems is just not going to happen in all but exceptional cases. >>> How many cases where you see "this antenna works great" do you see any mention of how long the parallel feedline may be. Most hams simply ignore that, but it is likely the most important part of how the antenna works and what type of balun of you need to use. >>> >>> Your experience may be very different with the "same" multiband antenna than your local ham or that in the artic > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9ma at sdellington.us -- Scott K9MA k9ma at sdellington.us From W2xj at w2xj.net Sun Jan 6 17:29:20 2019 From: W2xj at w2xj.net (W2xj) Date: Sun, 6 Jan 2019 17:29:20 -0500 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <438d5198-c649-3487-3921-16210561d83a@sdellington.us> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> Message-ID: In the case of SWBC the matching happens at the TX. Sent from my iPad > On Jan 6, 2019, at 5:15 PM, K9MA wrote: > > The really attractive thing about open line, and even window line, is that its loss is so low you can use it at a very high SWR, and take care of the matching at the station end. This is especially useful for multi-band antennas. The famous G5RV, for example, will work just exactly the same fed with window line and a tuner as it will with the usual matching section. > > 73, > Scott K9MA > >> On 1/6/2019 16:09, W2xj wrote: >> And those broadcast stations generally work within a 2:1 VSWR range. >> >> Sent from my iPad >> >>> On Jan 6, 2019, at 4:51 PM, Bob McGraw K4TAX wrote: >>> >>> Correct on all points. >>> >>> That is the reason I gave my feedline type, and length and antenna length alone with specific balun type and common mode choke type. Any old ragged combination of chunks of wire and feed line is not assured to work and is largely the reason many hams shy away from balanced feed systems. They tried it once, it didn't work well thus they deemed all balanced feed systems as being "bad". While the facts are, a balanced system correctly installed and with correct lengths, it is the lowest loss feed of any system reasonably available. Which is one of the reasons most short wave broadcast stations used balanced feed systems. >>> >>> 73 >>> >>> Bob, K4TAX >>> >>> >>>> On 1/6/2019 3:40 PM, Don Wilhelm wrote: >>>> All, >>>> >>>> I think a bit of extended study on transmission lines and their impedance transformation characteristics is in order - refer to any ARRL antenna book, even those from the 1950 an 1960 era, not much new has been added, other than baluns. The feedpoint impedance to the transmission line can vary from quite low to quite high dependent on the frequency, the length of line, and the load at the far end. It does NOT depend on the characteristic impedance of the transmission line. The ARRL TLW program can do a lot of computation for you. >>>> >>>> You may be able to adjust the length of the transmission line so there is a moderate shack end feedpoint impedance on all bands of interest and be able to use a good current balun which has either a 1:1 or 4:1 transformation ratio. You have to measure the transmission line at the point where you intend to install the balun to be sure which to use. >>>> >>>> Yes, just hanging any balun on any length of parallel feedline connected to any length of antenna and expecting it to work without problems is just not going to happen in all but exceptional cases. >>>> How many cases where you see "this antenna works great" do you see any mention of how long the parallel feedline may be. Most hams simply ignore that, but it is likely the most important part of how the antenna works and what type of balun of you need to use. >>>> >>>> Your experience may be very different with the "same" multiband antenna than your local ham or that in the artic >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to k9ma at sdellington.us > > > -- > Scott K9MA > > k9ma at sdellington.us > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w2xj at w2xj.net > From donwilh at embarqmail.com Sun Jan 6 17:44:52 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 6 Jan 2019 17:44:52 -0500 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <438d5198-c649-3487-3921-16210561d83a@sdellington.us> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> Message-ID: <7282bea6-5d59-ea7a-ccc6-84ecbc01b5d5@embarqmail.com> Scott, As I indicated, that is NOT true of just any length of window line. Some will work while others will not. With the G5RV, the only thing we know for sure is that on 20 meters, the impedance at the end of 34 feet of 300 ohm feedline is approximately 75 ohms. The impedance at that point will not be the same for other bands, and that is why a tuner is required. Once you get RF onto the radiator, it will be radiated. One real question is just how much loss do you encounter in the feedline. The other real question is, how much trouble do you have matching the shack end impedance to the 50 ohm output requirement of the transceiver. In days of old when we used plug-in coils in the transmitter and tuned the output tank to resonance, we could tap off those PA tank coils to match most any impedance. That capability moved into the antenna tuner with the advent of 50 ohm only transceivers - the first antenna tuners used balanced plug-in coils which could handle both balanced and unbalanced feedline, as well as low to high impedance depending on where you placed the tap(s) on the coil. The problem with those tuners is that they were not conducive to rapid band changes - you had to plug in coils for a different band. The Johnson Matchbox was a great asset to band changing and the proper taps on the coils, but its matching range was much more limited than those old-fashioned plug-in coils which provided a very wide range of matching impedance. 73, Don W3FPR On 1/6/2019 5:15 PM, K9MA wrote: > The really attractive thing about open line, and even window line, is > that its loss is so low you can use it at a very high SWR, and take care > of the matching at the station end. This is especially useful for > multi-band antennas. The famous G5RV, for example, will work just > exactly the same fed with window line and a tuner as it will with the > usual matching section. > From huntinhmb at coastside.net Sun Jan 6 17:51:15 2019 From: huntinhmb at coastside.net (Brian Hunt) Date: Sun, 6 Jan 2019 14:51:15 -0800 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> Message-ID: I learned a lot about my low band antenna system by building a full model of it using EZNEC and SimSmith. It enabled me to learn where the losses were band by band and resulted in a few changes. On 80m SimSmith said the loss in the 450 ohm was high because of the specific type I was using. It needed replacing anyway so I home brewed a length of ladder line and picked up over a dB. YMMV. 73, Brian, K0DTJ From k9ma at sdellington.us Sun Jan 6 18:21:05 2019 From: k9ma at sdellington.us (K9MA) Date: Sun, 6 Jan 2019 17:21:05 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <7282bea6-5d59-ea7a-ccc6-84ecbc01b5d5@embarqmail.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> <7282bea6-5d59-ea7a-ccc6-84ecbc01b5d5@embarqmail.com> Message-ID: Don, I guess I should have pointed out that I was assuming one of those wide-range, balanced tuners of days of yore.? I have one of those plug-in coil tuners I built long ago, and it will match almost anything, so feedline length is seldom an issue. Alas, the commercial tuners available today have much smaller ranges, so one does have to ensure that the impedance is in range, both of the tuner and the balun. 73, Scott K9MA On 1/6/2019 16:44, Don Wilhelm wrote: > Scott, > > As I indicated, that is NOT true of just any length of window line. > Some will work while others will not. > > With the G5RV, the only thing we know for sure is that on 20 meters, > the impedance at the end of 34 feet of 300 ohm feedline is > approximately 75 ohms. > The impedance at that point will not be the same for other bands, and > that is why a tuner is required. > > Once you get RF onto the radiator, it will be radiated.? One real > question is just how much loss do you encounter in the feedline. The > other real question is, how much trouble do you have matching the > shack end impedance to the 50 ohm output requirement of the transceiver. > > In days of old when we used plug-in coils in the transmitter and tuned > the output tank to resonance, we could tap off those PA tank coils to > match most any impedance.? That capability moved into the antenna > tuner with the advent of 50 ohm only transceivers - the first antenna > tuners used balanced plug-in coils which could handle both balanced > and unbalanced feedline, as well as low to high impedance depending on > where you placed the tap(s) on the coil. > The problem with those tuners is that they were not conducive to rapid > band changes - you had to plug in coils for a different band. > > The Johnson Matchbox was a great asset to band changing and the proper > taps on the coils, but its matching range was much more limited than > those old-fashioned plug-in coils which provided a very wide range of > matching impedance. > > 73, > Don W3FPR > > On 1/6/2019 5:15 PM, K9MA wrote: >> The really attractive thing about open line, and even window line, is >> that its loss is so low you can use it at a very high SWR, and take >> care of the matching at the station end. This is especially useful >> for multi-band antennas. The famous G5RV, for example, will work just >> exactly the same fed with window line and a tuner as it will with the >> usual matching section. >> -- Scott K9MA k9ma at sdellington.us From sdonnell2 at comcast.net Sun Jan 6 18:41:15 2019 From: sdonnell2 at comcast.net (fyredude901) Date: Sun, 6 Jan 2019 16:41:15 -0700 (MST) Subject: [Elecraft] KPA500 - Not Going To Full Power In-Reply-To: References: <1546810585905-0.post@n2.nabble.com> Message-ID: <1546818075295-0.post@n2.nabble.com> I think you may have hit it right off the bat. The KAT is in AUTO mode not manual. Fingers crossed that works. Thanks!! -- Sent from: http://elecraft.365791.n2.nabble.com/ From sdonnell2 at comcast.net Sun Jan 6 18:44:56 2019 From: sdonnell2 at comcast.net (fyredude901) Date: Sun, 6 Jan 2019 16:44:56 -0700 (MST) Subject: [Elecraft] KPA500 - Not Going To Full Power In-Reply-To: References: <1546810585905-0.post@n2.nabble.com> Message-ID: <1546818296575-0.post@n2.nabble.com> Gap Titan antenna to 50 feet LMR 400 coax. Problem started on 40 then I noticed on 20. FLEX output not surging. Thanks for your time and assistance. -- Sent from: http://elecraft.365791.n2.nabble.com/ From forums at david-woolley.me.uk Sun Jan 6 18:51:02 2019 From: forums at david-woolley.me.uk (David Woolley) Date: Sun, 6 Jan 2019 23:51:02 +0000 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> Message-ID: <8a9ba458-c6d6-9f59-b1ba-cf8a69174a5c@david-woolley.me.uk> The feedpoint impedance DOES depend on the characteristic impedance! Taking pure resistive cases (real characteristic impedances aren't), and lossless lines, a 75 ohm load at the end of a 75 ohm transmission line will have a feed point impedance that is a constant 75 ohms, whereas a 75 ohm load on 300 ohm feeder will have a feed point impedance that swings from 75 to 1200 ohms. -- David Woolley Owner K2 06123 On 06/01/2019 21:40, Don Wilhelm wrote: > The feedpoint impedance to the transmission line can vary from quite low > to quite high dependent on the frequency, the length of line, and the > load at the far end.? It does NOT depend on the characteristic impedance > of the transmission line. From witmerjr at gmail.com Sun Jan 6 18:58:45 2019 From: witmerjr at gmail.com (Bob Witmer) Date: Sun, 6 Jan 2019 18:58:45 -0500 Subject: [Elecraft] Elecraft Digest, Vol 177, Issue 10 KAT500 with Wire Antenna In-Reply-To: References: Message-ID: <7E897A8F-501D-4944-AAFD-BD05503AA471@gmail.com> Viggo, I am using a KAT500, with an external 4:1 current balun, to feed a 103ft center fed doublet up 40ft. Using 300 Ohm open wire feed-line - not sure of length probably 30 - 40 ft. Coax between balun & KAT500 is 5 ft long. Have also used 1:1 current balun but 4:1 provides more tuning solutions with KAT500. Can have issues with RF in shack. 73 Bob, W3RW > > Message: 14 > Date: Sun, 6 Jan 2019 17:59:53 +0100 > From: Viggo Magnus Nilsen Nilsen > To: elecraft at mailman.qth.net > Subject: [Elecraft] KAT 500 and open wire > Message-ID: > > Content-Type: text/plain; charset="UTF-8" > > Hello Elecrafters, > > Do some of you using KAT500 with open wire,ladder line feed to ur wire > antennas with balun (outside the tuner) ? working ok ? > > 73' LA9NEA Viggo > _______________________________________________ > Elecraft mailing list > Post to: Elecraft at mailman.qth.net > http://mailman.qth.net/mailman/listinfo/elecraft > You must be a subscriber to post. > Elecraft web page: http://www.elecraft.com > > End of Elecraft Digest, Vol 177, Issue 10 > ***************************************** From cyaffey at gmail.com Sun Jan 6 19:02:00 2019 From: cyaffey at gmail.com (Carl Yaffey) Date: Sun, 6 Jan 2019 19:02:00 -0500 Subject: [Elecraft] Elecraft SSB Net for Sunday January 6, 2019 References: <3505A968-F8A7-4D31-B75D-04A13A59E059@gmail.com> Message-ID: <448D16A3-FC60-4AE2-B727-42C245CD0A27@gmail.com> I often have trouble hearing folks from here in Ohio. Fortunately guys like Jim relay folks in. Today I checked in from AC7AV?s remote station in WA. Much easier! Begin forwarded message: > > From: Jim White NC0JW > > Today?s check ins included: > > K8NU/P7 Carl OH K3S 10996 w/KPA1500 Carl Yaffey K8NU Recording studio. cyaffeyNO_SPAM at gmail.com 614 268 6353, Columbus OH http://www.carl-yaffey.com http://www.grassahol.com http://www.bluesswing.com Https://www.columbusfolkmusicsociety.org http://www.timbrewolves.carl-yaffey.com http://www.columbusshotokankarate.com From brianpepperdine at sympatico.ca Sun Jan 6 19:09:25 2019 From: brianpepperdine at sympatico.ca (Brian) Date: Mon, 7 Jan 2019 00:09:25 +0000 Subject: [Elecraft] finding out about the KAT 100 tuner setup external to K2 no communication or recognition Message-ID: A weeks back there were some emails about what can and cannot be mounted into the K2.. the tuner and the amp etc. And mounting those into the old retired EC2 enclosure. Etc. Got me to thinking...hey, the K2 I have that has the amp installed internall does not seem to see the tuner in the external small box it is mounted in. Why is that? Probably some menu setting... I just never got back to that when last observed. Well.... first I had to disabuse my memory of what I thought was the case in my memory. First of all, the K2 that I had used portable on weekends before I got the KX3 some years ago - a K2 I KNEW had a working internal tuner was not that K2!! It was a K2/qrp with an internal KAT. It did though have a matching KAT 100 and KPA 100 in an EC2. So that misapprehension gone. Back to the other K2... hooked up the external KAT100... go through menus.... nothing. No antenna tuner detected... none of the ATU menu items present.. only a brief presentation of PA Ant1 message. I ponder this ... read manual... go back... go to secondary Menu re. ATU etc and also find I can reset the constantly running fan since Temp Comp is set at 270 degrees Celcius!! Not by me, I can assure you! Anyhow, I am thinking I KNOW THIS worked when I got it secondhand.... I know it did. Of course I decided to embark on this journey just before Elecraft is closing for Christmas... I accept that.. no big thing... no hurry... its been shelved awhile and I can get back to it later...I only intend to use it later come late Spring as a porch and patio deck rig then. But then I start a wondering.... get out the VOM and check the pins on the DB9 connectors on the cable between K2 and KAt 100. Hmmmm... no continuity on PIN1. Open the DB9 shells and the black wire had broken off of the pin, in spite of there being strain relief on the shell. Solder it up, turn on rig and as the guy two over from first chair in the standard string quartet said: Viola. Now I am mostly saying this only to say... I saw this error nowhere in the Elecraft archives (fair enough... its an oldish setup) nor generally. But moreover HAD I had to wait for Elecraft tech support open in the new year and I felt I had check what I could so far..... I feel strongly that they would have said: Check your cable, I don't think the black wire on PIN1 is communicating. Bright fellows there. Tnx for your time. Maybe this will be useful to someone sometime in the Archives. In any case I gave me something to do after the dog dragged me down a slippery hill. Not broken, but I have a sore leg for a couple weeks indeed. HNY 2019 Brien VE3VAW From edauer at law.du.edu Sun Jan 6 19:24:30 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Mon, 7 Jan 2019 00:24:30 +0000 Subject: [Elecraft] KPA1500 Utility for non-Windows Message-ID: That is exactly the problem I had with the Mac OS version -- the utility is from last June, and when the download box was clicked it reported that I already had the latest firmware (1.87, if I remember right). Several times. This morning I tried it on a different Mac, and it downloaded 2.0 FB. This afternoon I tried it again on the first Mac, and it worked. The only variable I can think of is that I had lunch in between tries. See if that works with Linux. Ted, KN1CBR ------------------------------ Message: 7 Date: Sun, 6 Jan 2019 15:00:31 +0000 From: "Walter J. Legowski" To: elecraft Subject: [Elecraft] KPA1500 Utility for Linux Message-ID: Content-Type: text/plain; charset=utf-8; format=flowed Now that I know about the need to update the firmware and the utility, I noticed that the Linux version of the utility is still from last June. It thinks that firmware version 1.87 is up-to-date, and knows nothing about version 2.0. Walt, WA1KKM From kevinr at coho.net Sun Jan 6 19:58:04 2019 From: kevinr at coho.net (kevinr) Date: Sun, 6 Jan 2019 16:58:04 -0800 Subject: [Elecraft] Elecraft CW Net Report Message-ID: Good Evening, ??? Twenty meters had QSB while forty had RTTY contesters and a very loud tone slightly below 7047 kHz.? This made me search for an open frequency which I found at 7044 kHz.? I called there until 0002z when I switched back to around 7047 and found the contest was over.? So I found a spot away from that loud, steady tone and called some more. ? On 14049.5 kHz at 2200z: W0CZ - Ken - ND K0DTJ - Brian - CA N5ZC - Rich - TX K4JPN - Steve - GA ? On 7044 kHz then on 7046.57 kHz: K0DTJ - Brian - CA KG7V - Marv - WA W0CZ - Ken - ND???? by proxy ?? The rain/snow line has been moving up and down all day. Currently it is above me so it's raining.? The reports I received were of mild, wet weather except for Georgia which has sunny skies.? At least I can feel warm by association. ?? 73, ?????? Kevin.? KD5ONS - From edauer at law.du.edu Sun Jan 6 19:59:52 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Mon, 7 Jan 2019 00:59:52 +0000 Subject: [Elecraft] Additional features of Buddipole for a stealth application Message-ID: I just tried something with a couple of the new Buddipole pieces, and it worked very well. Though I?d pass it along. Not OT, I think, since Elecraft sells these. My problem has been getting an antenna above the roof line at my townhouse in the city. Antennas are not allowed, but the patio between each townhouse and its garage is private. The problem is that both roofs are higher than the original Buddipole would go, giving me a clear take-off angle of more than 60 to 80 degrees in every direction. Buddipole now sells a longer mast which fits perfectly in the same tripod, though it requires one of their guying collars. And there is a longer extendable whip. And 12 inch arms. The configuration for 20M is the tall mast topped at the T?s vertical mounting by both of the original arms, two of the 12-inchers, and the longer whip with all but 6 inches extended. The counterpoise is 17 feet of wire down from the Tee at an angle of about 135 degrees, which also acts as a third guy line. No coils. Incredible result, for a Buddipole ? SWR less than 1.5:1 across more than 50 KHz of the CW segment of the band. And a good part of the whip is above the roofline. A thing of beauty. For 30M, the same result by adding above the T another 12 inch arm, one coil tapped at six turns, another 12 inch arm after that, and then the rest of it as for 20M, with the counterpoise unwound to 23 feet. The 1.5:1 bandwidth on 30M is a little narrower, but not much. No fiddling with coils or whip extension to change bands ? just remove two 12 inch arms and the coil, wind up some counterpoise wire, and it?s back to 20M. Unless someone is standing in the patio, which cannot be seen from the street, the whip is effectively invisible. I don?t know how wind will affect it, so just collapsing the mast brings it all down within the lee of the building As always, YMMV. Ted, KN1CBR From jackbrindle at me.com Sun Jan 6 20:03:22 2019 From: jackbrindle at me.com (Jack Brindle) Date: Sun, 6 Jan 2019 17:03:22 -0800 Subject: [Elecraft] KPA500 - Not Going To Full Power In-Reply-To: <1546810585905-0.post@n2.nabble.com> References: <1546810585905-0.post@n2.nabble.com> Message-ID: Did you hear any clicks from the KPA when this was happening? Did the FAULT LED blink? It sounds like the amplifier is experiencing an issue that requires it to start to protect itself. It does this by switching in a 3db pad, which cuts the output power in half. If it sees no further issues while the pad is engaged, it will switch out the pad. If the issue recurs, so will switching in the pad. If the KPA is sensing a problem in its output, such as high reflected power, it will protect itself exactly as you describe. This very well may be due to a problem in the antenna system involving arcing or other issues as others have described. look for burn marks at the antenna (most likely inside the connectors). We build our stations for low power operation, then when we upgrade with an amplifier, we experience just these sort of issues with the antenna system. It could be connectors, adapters or the antenna itself. In your case it sounds like you may have a matching system at the antenna that is overheating due to high power and thus changing the load presented to the ATU and amplifier. The KPA will see these sort of changes faster than the KAT and thus it will react faster. The advice is good - check the antenna system to make sure it is not being overloaded. 73! Jack Brindle, W6FB Elecraft Engineering > On Jan 6, 2019, at 1:36 PM, fyredude901 wrote: > > Received my KPA 500 / KAT500 combo for Christmas. Got them hooked up and > they were working like a charm and have for several days. I am mostly on > digital and will typically run around 300 watts out. I am using a Flexradio > 6500 and my output on it is around 22 watts. Today, I pushed the output up > to around 27 (which drove the amp over 310 watts). At that time, the power > meter started surging (sorry, best way that I can think to describe it). It > amp never went above 310, but it was like the power was being cycled on and > off to the unit. The output was pulsing high and low. When I backed the > Flex back down to 22 watts, and the output of the amp was 300 or less, this > issue stopped. I am assuming it is the protection system for the amp. > Still, I would like to know what the possible cause of this likely is so > that I can troubleshoot and fix it. Any advice that can be provided would > be greatly appreciated!! > > 73 > KD9EGK > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jackbrindle at me.com From witmerjr at gmail.com Sun Jan 6 20:22:24 2019 From: witmerjr at gmail.com (Bob Witmer) Date: Sun, 6 Jan 2019 20:22:24 -0500 Subject: [Elecraft] Elecraft Digest, Vol 177, Issue 10 Elecraft] KPA500 - Not Going To Full Power In-Reply-To: References: Message-ID: I encountered a somewhat situation when I first installed an IC-7100. The cause of the problem turned out to be RF in the shack. 73 Bob From jim at audiosystemsgroup.com Sun Jan 6 21:12:42 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Sun, 6 Jan 2019 18:12:42 -0800 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <8a9ba458-c6d6-9f59-b1ba-cf8a69174a5c@david-woolley.me.uk> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <8a9ba458-c6d6-9f59-b1ba-cf8a69174a5c@david-woolley.me.uk> Message-ID: <897d368e-ac79-511c-5059-b439f7eff35f@audiosystemsgroup.com> I think we're confused here about the meaning the words "feedpoint impedance." It is the impedance of THE ANTENNA at the point where the feedline is attached, and it is determined entirely by the antenna, INCLUDING the common mode circuit of the feedline. That common mode circuit consists of the feedline, any chokes and matching elements, and whatever it is connected to in the shack. The ONLY contribution of the feedline to this is as a common mode element, and in the common mode circuit it looks like a wire connected between the feedpoint and the shack. We add one or more common mode chokes to minimize the effect if the common mode circuit, which is radiation and reception, and to do that, a very good choke must be AT THE FEEDPOINT. I don't know of a way to EFFECTIVELY choke a feedline that is not matched to the antenna. Yes, you can put something there, but if it did anything useful it would fry (unless yo only ran QRP to the antena), and a choke that wouldn't fry with TX power won't do anything useful! A few other? points:? 1) the SWR on a feedline is established BY THE ANTENNA, not the transmitter or antenna tuner; 2) feeding an antenna with two-wire line does NOT make it balanced -- most practical antennas that we think of as balanced are often un-balanced by their surroundings -- ground slope, variations in the soil under them, trees, wiring in buildings, unequal height ; 3) off-center-fed antennas are inherently unbalanced. 73, Jim K9YC On 1/6/2019 3:51 PM, David Woolley wrote: > he feedpoint impedance DOES depend on the characteristic impedance! From frantz at pwpconsult.com Sun Jan 6 21:53:40 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Sun, 6 Jan 2019 18:53:40 -0800 Subject: [Elecraft] {K3} Loss of audio while changing digital modes Message-ID: I played in the ARRL RTTY Roundup today, using both RTTY and FT8. When I changed from FT8 to RTTY, I had to change the digital mode from DATA A to FSK D. (I run RUMlogNG in RTTY contests, and it does RTTY using the CAT interface.) Whenever I changed from DATA A to FSK D by pressing the buttons on the K3, I lost all the audio out on both the headphones and the internal K3S upgrade "sound card". The bypass was to change modes with the mode switch and change back. Any ideas? 73 Bill AE6JV ----------------------------------------------------------------------- Bill Frantz | gets() remains as a monument | Periwinkle (408)356-8506 | to C's continuing support of | 16345 Englewood Ave www.pwpconsult.com | buffer overruns. | Los Gatos, CA 95032 From rmcgraw at blomand.net Sun Jan 6 22:03:46 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sun, 6 Jan 2019 21:03:46 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <897d368e-ac79-511c-5059-b439f7eff35f@audiosystemsgroup.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <8a9ba458-c6d6-9f59-b1ba-cf8a69174a5c@david-woolley.me.uk> <897d368e-ac79-511c-5059-b439f7eff35f@audiosystemsgroup.com> Message-ID: <82c28a42-bf2e-aa6a-c417-3c7f790a1ea8@blomand.net> I agree with Jim on this point.?? I have means to measure current in each side of the balanced feed line.? And I have means to measure the voltage on each leg and observe the phase difference in each leg.? A dual trace scope with 2 current probes is the basic configuration.? If the currents are equal in each leg, and the voltage is equal in each leg, and the phase is 180 degrees between the two legs, the system is well balanced. As I stated earlier, random installation of an antenna and feed line will likely lead to random and usually unfavorable results. Otherwise, careful installation and positioning of the antenna legs and feed line run produces wonderful results. 73 Bob, K4TAX On 1/6/2019 8:12 PM, Jim Brown wrote: > A few other? points:? 1) the SWR on a feedline is established BY THE > ANTENNA, not the transmitter or antenna tuner; 2) feeding an antenna > with two-wire line does NOT make it balanced -- most practical > antennas that we think of as balanced are often un-balanced by their > surroundings -- ground slope, variations in the soil under them, > trees, wiring in buildings, unequal height ; 3) off-center-fed > antennas are inherently unbalanced. > > 73, Jim K9YC From rmcgraw at blomand.net Sun Jan 6 22:05:27 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sun, 6 Jan 2019 21:05:27 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <897d368e-ac79-511c-5059-b439f7eff35f@audiosystemsgroup.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <8a9ba458-c6d6-9f59-b1ba-cf8a69174a5c@david-woolley.me.uk> <897d368e-ac79-511c-5059-b439f7eff35f@audiosystemsgroup.com> Message-ID: I agree with Jim on this point.?? I have means to measure current in each side of the balanced feed line.? And I have means to measure the voltage on each leg and observe the phase difference in each leg.? A dual trace scope with 2 current probes is the basic configuration.? If the currents are equal in each leg, and the voltage is equal in each leg, and the phase is 180 degrees between the two legs, the system is well balanced. As I stated earlier, random installation of an antenna and feed line will likely lead to random and usually unfavorable results. Otherwise, careful installation and positioning of the antenna legs and feed line run produces wonderful results.?? It is not that difficult to do.? It just takes a bit of planning and careful attention to detail.? Otherwise, just hang some commercial version of a touted antenna in a tree and be done with it. 73 Bob, K4TAX On 1/6/2019 8:12 PM, Jim Brown wrote: > A few other? points:? 1) the SWR on a feedline is established BY THE > ANTENNA, not the transmitter or antenna tuner; 2) feeding an antenna > with two-wire line does NOT make it balanced -- most practical > antennas that we think of as balanced are often un-balanced by their > surroundings -- ground slope, variations in the soil under them, > trees, wiring in buildings, unequal height ; 3) off-center-fed > antennas are inherently unbalanced. > > 73, Jim K9YC From k9ma at sdellington.us Sun Jan 6 22:24:03 2019 From: k9ma at sdellington.us (K9MA) Date: Sun, 6 Jan 2019 21:24:03 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <897d368e-ac79-511c-5059-b439f7eff35f@audiosystemsgroup.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <8a9ba458-c6d6-9f59-b1ba-cf8a69174a5c@david-woolley.me.uk> <897d368e-ac79-511c-5059-b439f7eff35f@audiosystemsgroup.com> Message-ID: On 1/6/2019 20:12, Jim Brown wrote: > We add one or more common mode chokes to minimize the effect if the > common mode circuit, which is radiation and reception, and to do that, > a very good choke must be AT THE FEEDPOINT. I don't know of a way to > EFFECTIVELY choke a feedline that is not matched to the antenna. Yes, > you can put something there, but if it did anything useful it would > fry (unless yo only ran QRP to the antena), and a choke that wouldn't > fry with TX power won't do anything useful! I have to respectfully disagree a little here. A choke specifically designed for the antenna impedance at the feed point could effectively eliminate the common mode current. The problem is, we often use balanced line with antennas which have a large range of impedances over frequency range at which they are used. (Think G5RV.) It may be impossible to design a single choke which can work over the whole range. However, feeding balanced line with a balanced tuner can work pretty well, even though the feedline may radiate a bit due to common mode current. I've only attempted this with link-coupled tuners. I'm not sure it works as well with the double T-network tuners with a choke at the input, like the MFJ-976, but it may. For years, I've used a warped, lop-sided, short, 80 meter "dipole" fed with window line and the balanced tuner. I never bothered to try to figure out the impedance at either the feedpoint or the tuner, but the tuner matches it on several bands. I don't use it much on 80, though, as it's so close to the roof of my house that the RF gets into everything. I'm sure the feedline radiates some, but that's not where the RFI is coming from. 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us From pincon at erols.com Sun Jan 6 23:17:22 2019 From: pincon at erols.com (Charlie T) Date: Sun, 6 Jan 2019 23:17:22 -0500 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <8a9ba458-c6d6-9f59-b1ba-cf8a69174a5c@david-woolley.me.uk> <897d368e-ac79-511c-5059-b439f7eff35f@audiosystemsgroup.com> Message-ID: <001b01d4a63f$e6ac29a0$b4047ce0$@erols.com> I should probably know this, but what is the old dual air coil Heathkit B-1 balun, a current or voltage type? If I remember correctly, they are 4:1 ratio. Would this be a better choice for open-wire feed to a dipole intended for use on several bands? 73, Charlie k3ICH -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of K9MA Sent: Sunday, January 06, 2019 10:24 PM To: elecraft at mailman.qth.net Subject: Re: [Elecraft] KAT 500 and open wire On 1/6/2019 20:12, Jim Brown wrote: > We add one or more common mode chokes to minimize the effect if the > common mode circuit, which is radiation and reception, and to do that, > a very good choke must be AT THE FEEDPOINT. I don't know of a way to > EFFECTIVELY choke a feedline that is not matched to the antenna. Yes, > you can put something there, but if it did anything useful it would > fry (unless yo only ran QRP to the antena), and a choke that wouldn't > fry with TX power won't do anything useful! I have to respectfully disagree a little here. A choke specifically designed for the antenna impedance at the feed point could effectively eliminate the common mode current. The problem is, we often use balanced line with antennas which have a large range of impedances over frequency range at which they are used. (Think G5RV.) It may be impossible to design a single choke which can work over the whole range. However, feeding balanced line with a balanced tuner can work pretty well, even though the feedline may radiate a bit due to common mode current. I've only attempted this with link-coupled tuners. I'm not sure it works as well with the double T-network tuners with a choke at the input, like the MFJ-976, but it may. For years, I've used a warped, lop-sided, short, 80 meter "dipole" fed with window line and the balanced tuner. I never bothered to try to figure out the impedance at either the feedpoint or the tuner, but the tuner matches it on several bands. I don't use it much on 80, though, as it's so close to the roof of my house that the RF gets into everything. I'm sure the feedline radiates some, but that's not where the RFI is coming from. 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to pincon at erols.com From k9ma at sdellington.us Sun Jan 6 23:34:18 2019 From: k9ma at sdellington.us (K9MA) Date: Sun, 6 Jan 2019 22:34:18 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <001b01d4a63f$e6ac29a0$b4047ce0$@erols.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <8a9ba458-c6d6-9f59-b1ba-cf8a69174a5c@david-woolley.me.uk> <897d368e-ac79-511c-5059-b439f7eff35f@audiosystemsgroup.com> <001b01d4a63f$e6ac29a0$b4047ce0$@erols.com> Message-ID: <9d64ad94-101a-40d3-889f-50024f631540@sdellington.us> The B-1 is indeed 4:1.? It would be useful only for matched balanced lines. Unless you have a folded dipole, you probably don't have a match balanced line. 73, Scott K9MA On 1/6/2019 22:17, Charlie T wrote: > I should probably know this, but what is the old dual air coil Heathkit B-1 > balun, a current or voltage type? > If I remember correctly, they are 4:1 ratio. > Would this be a better choice for open-wire feed to a dipole intended for > use on several bands? > > 73, Charlie k3ICH > > > > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net On > Behalf Of K9MA > Sent: Sunday, January 06, 2019 10:24 PM > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] KAT 500 and open wire > > On 1/6/2019 20:12, Jim Brown wrote: >> We add one or more common mode chokes to minimize the effect if the >> common mode circuit, which is radiation and reception, and to do that, >> a very good choke must be AT THE FEEDPOINT. I don't know of a way to >> EFFECTIVELY choke a feedline that is not matched to the antenna. Yes, >> you can put something there, but if it did anything useful it would >> fry (unless yo only ran QRP to the antena), and a choke that wouldn't >> fry with TX power won't do anything useful! > I have to respectfully disagree a little here. A choke specifically designed > for the antenna impedance at the feed point could effectively eliminate the > common mode current. The problem is, we often use balanced line with > antennas which have a large range of impedances over frequency range at > which they are used. (Think G5RV.) It may be impossible to design a single > choke which can work over the whole range. However, feeding balanced line > with a balanced tuner can work pretty well, even though the feedline may > radiate a bit due to common mode current. I've only attempted this with > link-coupled tuners. I'm not sure it works as well with the double T-network > tuners with a choke at the input, like the MFJ-976, but it may. > > For years, I've used a warped, lop-sided, short, 80 meter "dipole" fed with > window line and the balanced tuner. I never bothered to try to figure out > the impedance at either the feedpoint or the tuner, but the tuner matches it > on several bands. I don't use it much on 80, though, as it's so close to the > roof of my house that the RF gets into everything. > I'm sure the feedline radiates some, but that's not where the RFI is coming > from. > > 73, > > Scott K9MA > > -- > Scott K9MA > > k9ma at sdellington.us > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message > delivered to pincon at erols.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9ma at sdellington.us -- Scott K9MA k9ma at sdellington.us From k2vco.vic at gmail.com Mon Jan 7 00:09:30 2019 From: k2vco.vic at gmail.com (Victor Rosenthal 4X6GP) Date: Mon, 7 Jan 2019 07:09:30 +0200 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <438d5198-c649-3487-3921-16210561d83a@sdellington.us> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> Message-ID: <8179c143-91a0-cb0f-8e0f-5b986ed3ba82@gmail.com> I've been using an open-wire fed rotary dipole that is a halfwave on 20 meters on all bands from 40 through 10 meters for the past 4 years or so. The feeding/matching system has gone through various iterations, but now uses homemade open-wire line of no. 12 wire (2 mm) spaced 4.5 inches (11.4 cm), a very slightly modified Johnson kW Matchbox, and a pair of inductors for reactance cancellation on 30 meters. The line is about 34 feet long (10.4 m). The SWR on the worst band (7 MHz) approaches 100:1, but losses calculated by TLW are around 1 dB or less. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 7 Jan 2019 00:15, K9MA wrote: > The really attractive thing about open line, and even window line, is > that its loss is so low you can use it at a very high SWR, and take care > of the matching at the station end. This is especially useful for > multi-band antennas. The famous G5RV, for example, will work just > exactly the same fed with window line and a tuner as it will with the > usual matching section. > > 73, > Scott K9MA From ve3iay at gmail.com Mon Jan 7 00:54:37 2019 From: ve3iay at gmail.com (Richard Ferch) Date: Mon, 7 Jan 2019 00:54:37 -0500 Subject: [Elecraft] {K3} Loss of audio while changing digital modes Message-ID: I have seen something that might (or might not) be related. Occasionally (not every time), at the end of an operating session using WSJT-X, when I shut down WSJT-X the audio from my K3 in my headphones goes mute. I have seen this once or twice when shutting down fldigi as well. It does not happen with other programs I use. I have found that tapping the SUB button twice (I have a subRX in my K3) restores audio output. I have no idea what causes this receiver muting and would be interested to know the explanation if there is one. 73, Rich VE3KI AE6JV wrote: I played in the ARRL RTTY Roundup today, using both RTTY and FT8. When I changed from FT8 to RTTY, I had to change the digital mode from DATA A to FSK D. (I run RUMlogNG in RTTY contests, and it does RTTY using the CAT interface.) Whenever I changed from DATA A to FSK D by pressing the buttons on the K3, I lost all the audio out on both the headphones and the internal K3S upgrade "sound card". The bypass was to change modes with the mode switch and change back. Any ideas? 73 Bill AE6JV From forums at david-woolley.me.uk Mon Jan 7 08:48:46 2019 From: forums at david-woolley.me.uk (David Woolley) Date: Mon, 7 Jan 2019 13:48:46 +0000 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <897d368e-ac79-511c-5059-b439f7eff35f@audiosystemsgroup.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <8a9ba458-c6d6-9f59-b1ba-cf8a69174a5c@david-woolley.me.uk> <897d368e-ac79-511c-5059-b439f7eff35f@audiosystemsgroup.com> Message-ID: Don: 1) made a distinction between feedpoint and load impedance, which led me to believe the load was the antenna, and the feedpoint the transmitter end; 2) said that the feedpoint impedance depended on the length of the line and the frequency, which further supported that interpretation. However, considering your definition of feedpoint, and consider balanced twin feeder. Even with a perfect choke at the feedpoint, there will be unbalance at the transmitter end, when using designs, like the K series, that feed against chassis. In particular, consider a feeder length of a quarter wavelength. As well as the intended differential mode signal, you will also excite the feeder as a quarter wave vertical against the chassis and, presumably, ground, if you don't choke at the transmitter end. My gut feeling is that having a good match to the feeder is an oversimplification, but I need to think about that a bit more. Incidentally, is the 4:1 "current mode" balun configuration really purely current mode? It seems to me that it is behaving as a transformer as well as as a choke. On 07/01/2019 02:12, Jim Brown wrote: > I think we're confused here about the meaning the words "feedpoint > impedance." It is the impedance of THE ANTENNA at the point where the > feedline is attached, and it is determined entirely by the antenna, > INCLUDING the common mode circuit of the > I don't know of a way to EFFECTIVELY choke a feedline that is not matched to the antenna. > a very good choke must be AT THE FEEDPOINT From rmcgraw at blomand.net Mon Jan 7 08:48:37 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Mon, 7 Jan 2019 07:48:37 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <001b01d4a63f$e6ac29a0$b4047ce0$@erols.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <8a9ba458-c6d6-9f59-b1ba-cf8a69174a5c@david-woolley.me.uk> <897d368e-ac79-511c-5059-b439f7eff35f@audiosystemsgroup.com> <001b01d4a63f$e6ac29a0$b4047ce0$@erols.com> Message-ID: <9a77a776-5829-f376-7814-3f805567e76c@blomand.net> They are a voltage type, 4:1 designed to feed a folded dipole. There are actually 4 windings, 2 on each coil. If you want to see the best in balun usage and efficiency, a folded dipole typically has some 200 to 300 ohms impedance when constructed from open wire line or like materials. ?? Thus the upper radiator and lower radiator are equal diameters.? Of course it basically a single band antenna and? when used with a 4:1 balun provides,? a 50 to 75 ohm load for the transmitter.?? For that reason, I believe hams {not me for one}, have gotten away from the design.? There is a lot of merit to the folded dipole antenna, relatively broadband, less noise on receive, low loss, high efficiency and etc.?? I use one for my 160M and another for my 75M AM stations.??? Both of mine are constructed from heavy 300 ohm transmitting feed line.? One must pay special attention to end support means {and not by the conductors with an insulator}? and center support where the feed line is attached. 73 Bob, K4TAX On 1/6/2019 10:17 PM, Charlie T wrote: > I should probably know this, but what is the old dual air coil Heathkit B-1 > balun, a current or voltage type? > If I remember correctly, they are 4:1 ratio. > Would this be a better choice for open-wire feed to a dipole intended for > use on several bands? > > 73, Charlie k3ICH > > > From wes_n7ws at triconet.org Mon Jan 7 10:45:09 2019 From: wes_n7ws at triconet.org (Wes Stewart) Date: Mon, 7 Jan 2019 08:45:09 -0700 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <9a77a776-5829-f376-7814-3f805567e76c@blomand.net> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <8a9ba458-c6d6-9f59-b1ba-cf8a69174a5c@david-woolley.me.uk> <897d368e-ac79-511c-5059-b439f7eff35f@audiosystemsgroup.com> <001b01d4a63f$e6ac29a0$b4047ce0$@erols.com> <9a77a776-5829-f376-7814-3f805567e76c@blomand.net> Message-ID: <8362be67-4eea-20f4-017a-b1bf6caa2ac5@triconet.org> Then there must be less signal too:-) Wes? N7WS On 1/7/2019 6:48 AM, Bob McGraw K4TAX wrote: > ... less noise on receive... > > 73 > > Bob, K4TAX From wes_n7ws at triconet.org Mon Jan 7 10:49:15 2019 From: wes_n7ws at triconet.org (Wes Stewart) Date: Mon, 7 Jan 2019 08:49:15 -0700 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <438d5198-c649-3487-3921-16210561d83a@sdellington.us> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> Message-ID: With all due respect, you don't say what acceptable loss is.? Of course, you can match whatever the impedance is, most tuners will match an open circuit because their internal losses allow it.? But it can be a fallacy that, "The line loss is so low it doesn't matter."? Absent voltage breakdown, line loss increases because of the increased circulating current resulting from operating at elevated SWR.? That increased current is an issue in some baluns and tuners as well.? *All* of these components must be considered when evaluating an antenna "system."? Considering only one part in isolation is fraught with danger. Try running that 102' long "G5RV" up 50' on 160 meters.? Feed it with 100' of Wireman 553 "low loss" ladderline.? The 0.1 dB matched loss turns into over 13 db at the input and that's without considering tuner loss. (Source: EZNEC and TLDetails) Wes? N7WS On 1/6/2019 3:15 PM, K9MA wrote: > The really attractive thing about open line, and even window line, is that its > loss is so low you can use it at a very high SWR, and take care of the > matching at the station end. This is especially useful for multi-band > antennas. The famous G5RV, for example, will work just exactly the same fed > with window line and a tuner as it will with the usual matching section. > > 73, > Scott K9MA From w6png at yahoo.com Mon Jan 7 11:02:27 2019 From: w6png at yahoo.com (Paul Gacek) Date: Mon, 7 Jan 2019 08:02:27 -0800 Subject: [Elecraft] Elecraft KRC2 build snaps and short narrative Message-ID: <23F3B9C1-95D4-4C21-918E-6473006DE091@yahoo.com> Like all on this list I like my Elecraft gear and have used it extensively for Summits on the Air (SOTA), the 2016 ARRL NPOTA event and now morphing into suitcase DXpeditions. If interested in a few snaps and narrative check out my blog post at ?.. https://w6png.wordpress.com/2019/01/07/suitcase-dxpedition-station-automation-step-1-the-elecraft-krc2/ Paul W6PNG/M0SNA From greg7412 at gmail.com Sun Jan 6 23:53:54 2019 From: greg7412 at gmail.com (Greg Leber) Date: Sun, 6 Jan 2019 22:53:54 -0600 Subject: [Elecraft] For Sale LP-Pan unit Message-ID: LP-Pan unit in mint cond. $150. Cont me off list if interested. (K9ON) greg7412 at gmail.com From donwilh at embarqmail.com Mon Jan 7 11:39:54 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Mon, 7 Jan 2019 11:39:54 -0500 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> Message-ID: <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> There is a BIG difference between ladder line and open wire transmission line. Even low loss ladder line can have significant loss, especially when wet. Open wire feeders can truly be low loss even when operated at high SWR. So how do you construct proper open wire line? It is most easily done when the 2 wires are under tension and spaced about 6 inches apart with as few insulators between them as possible - the tension keeps the spacing relatively constant - that is practical over a long horizontal run of the transmission line. Then bring it up to the antenna feedpoint with wires spaced apart with insulators, and likewise on the run to the house entry or better yet to the shack - the more insulators, the greater the loss can be. You can use ladder-line from there into the shack, or you can put a good current mode balun at the house entry and from there run a short length of coax to the tuner. As I have mentioned before, whether a 1:1 balun or a 4:1 balun will work better has to be determined - it depends on the feedline length, the frequency, and the feedpoint impedance of the radiator for that particular frequency. If the feedpoint impedance at the tuner end of the feedline is already low, a 4:1 balun will make it 4 times lower and difficult for your tuner to deal with. A G5RV antenna on 160 meters will not be very efficient (the high current point will be somewhere down the transmission line and not at the center of the antenna). One thing is true, the RF voltage at the ends of the antenna is the highest, and the highest current is 1/4 wavelength away from the end, even if that is at a point well down the feedline. The equal and opposite currents on the feedline will cancle making that highest current point not useful for radiating a signal. Radiator lengths greater than 1/2 wavelength can be efficient, but shorter than 1/2 wavelength will be less efficient because the balanced currents on the feedline cancel each other out. That is just plain physics. 73, Don W3FPR On 1/7/2019 10:49 AM, Wes Stewart wrote: > > > Try running that 102' long "G5RV" up 50' on 160 meters.? Feed it with > 100' of Wireman 553 "low loss" ladderline.? The 0.1 dB matched loss > turns into over 13 db at the input and that's without considering tuner > loss. (Source: EZNEC and TLDetails) > From donwilh at embarqmail.com Mon Jan 7 11:55:44 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Mon, 7 Jan 2019 11:55:44 -0500 Subject: [Elecraft] {K3} Loss of audio while changing digital modes In-Reply-To: References: Message-ID: <7b1051c6-cc91-8645-8782-27b203feee4d@embarqmail.com> Rich, That sounds like you have squelch turned on. 73, Don W3FPR On 1/7/2019 12:54 AM, Richard Ferch wrote: > I have seen something that might (or might not) be related. Occasionally > (not every time), at the end of an operating session using WSJT-X, when I > shut down WSJT-X the audio from my K3 in my headphones goes mute. I have > seen this once or twice when shutting down fldigi as well. It does not > happen with other programs I use. > > I have found that tapping the SUB button twice (I have a subRX in my K3) > restores audio output. > > I have no idea what causes this receiver muting and would be interested to > know the explanation if there is one. > From k9ma at sdellington.us Mon Jan 7 12:23:36 2019 From: k9ma at sdellington.us (K9MA) Date: Mon, 7 Jan 2019 11:23:36 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> Message-ID: <68a2f06e-aa0a-464f-41f7-0926eecf1444@sdellington.us> There are limits, of course, as your example shows. A center fed quarter wave is a very low impedance. I'd expect the feedline loss for that G5RV system would be less than a couple dB on 80 through 10 meters, generally acceptable. 73, Scott K9MA On 1/7/2019 09:49, Wes Stewart wrote: > > With all due respect, you don't say what acceptable loss is.? Of > course, you can match whatever the impedance is, most tuners will > match an open circuit because their internal losses allow it.? But it > can be a fallacy that, "The line loss is so low it doesn't matter."? > Absent voltage breakdown, line loss increases because of the increased > circulating current resulting from operating at elevated SWR.? That > increased current is an issue in some baluns and tuners as well.? > *All* of these components must be considered when evaluating an > antenna "system."? Considering only one part in isolation is fraught > with danger. > > Try running that 102' long "G5RV" up 50' on 160 meters.? Feed it with > 100' of Wireman 553 "low loss" ladderline.? The 0.1 dB matched loss > turns into over 13 db at the input and that's without considering > tuner loss. (Source: EZNEC and TLDetails) > > Wes? N7WS > > On 1/6/2019 3:15 PM, K9MA wrote: >> The really attractive thing about open line, and even window line, is >> that its loss is so low you can use it at a very high SWR, and take >> care of the matching at the station end. This is especially useful >> for multi-band antennas. The famous G5RV, for example, will work just >> exactly the same fed with window line and a tuner as it will with the >> usual matching section. >> >> 73, >> Scott K9MA > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9ma at sdellington.us -- Scott K9MA k9ma at sdellington.us From k9ma at sdellington.us Mon Jan 7 12:28:07 2019 From: k9ma at sdellington.us (K9MA) Date: Mon, 7 Jan 2019 11:28:07 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> Message-ID: <098519e8-8772-d538-9dad-ba1f839a350f@sdellington.us> On 1/7/2019 10:39, Don Wilhelm wrote: > Radiator lengths greater than 1/2 wavelength can be efficient, but > shorter than 1/2 wavelength will be less efficient because the > balanced currents on the feedline cancel each other out.? That is just > plain physics. Actually, a short antenna CAN be very efficient, as long as the resistance of the antenna itself is low and the losses in the matching network are low. I didn't say it was easy, though. 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us From wunder at wunderwood.org Mon Jan 7 12:34:42 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Mon, 7 Jan 2019 09:34:42 -0800 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> Message-ID: I think ?window line? is less ambiguous for the stuff separated by plastic with squares cut out. I see ?ladder line? being used to mean either window line or open wire line. DX Engineering uses ladder line to mean the plastic dielectric line: https://www.dxengineering.com/search/part-type/ladder-line W7FG uses ladder line to mean 600 Ohm open wire line: http://trueladderline.com/w7fg-design-600-ohm-open-wire-feedline/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 7, 2019, at 8:39 AM, Don Wilhelm wrote: > > There is a BIG difference between ladder line and open wire transmission line. > > Even low loss ladder line can have significant loss, especially when wet. > > Open wire feeders can truly be low loss even when operated at high SWR. > > So how do you construct proper open wire line? It is most easily done when the 2 wires are under tension and spaced about 6 inches apart with as few insulators between them as possible - the tension keeps the spacing relatively constant - that is practical over a long horizontal run of the transmission line. Then bring it up to the antenna feedpoint with wires spaced apart with insulators, and likewise on the run to the house entry or better yet to the shack - the more insulators, the greater the loss can be. You can use ladder-line from there into the shack, or you can put a good current mode balun at the house entry and from there run a short length of coax to the tuner. > > As I have mentioned before, whether a 1:1 balun or a 4:1 balun will work better has to be determined - it depends on the feedline length, the frequency, and the feedpoint impedance of the radiator for that particular frequency. If the feedpoint impedance at the tuner end of the feedline is already low, a 4:1 balun will make it 4 times lower and difficult for your tuner to deal with. > > A G5RV antenna on 160 meters will not be very efficient (the high current point will be somewhere down the transmission line and not at the center of the antenna). One thing is true, the RF voltage at the ends of the antenna is the highest, and the highest current is 1/4 wavelength away from the end, even if that is at a point well down the feedline. The equal and opposite currents on the feedline will cancle making that highest current point not useful for radiating a signal. > > Radiator lengths greater than 1/2 wavelength can be efficient, but shorter than 1/2 wavelength will be less efficient because the balanced currents on the feedline cancel each other out. That is just plain physics. > > 73, > Don W3FPR > > > > On 1/7/2019 10:49 AM, Wes Stewart wrote: >> Try running that 102' long "G5RV" up 50' on 160 meters. Feed it with 100' of Wireman 553 "low loss" ladderline. The 0.1 dB matched loss turns into over 13 db at the input and that's without considering tuner loss. (Source: EZNEC and TLDetails) > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From FlatHat at comcast.net Mon Jan 7 12:43:58 2019 From: FlatHat at comcast.net (Richard) Date: Mon, 7 Jan 2019 12:43:58 -0500 Subject: [Elecraft] Annoying WSJT-X Message Message-ID: <7FC8F57E-8D68-4474-AE33-EE1674EA456D@comcast.net> Has anyone figured out how to stop that "2.0 only" message from popping up every time you launch WSJT-X 2.0? Richard - W4KBX From ve3iay at gmail.com Mon Jan 7 12:59:55 2019 From: ve3iay at gmail.com (Richard Ferch) Date: Mon, 7 Jan 2019 12:59:55 -0500 Subject: [Elecraft] {K3} Loss of audio while changing digital modes Message-ID: Squelch? Wazzat? No, I would never knowingly turn that on. But next time the muting happens, I will try to remember to look at the CONFIG:SQL MAIN and SQL SUB settings to see if they have been changed somehow. That leaves an open question: Why would tapping SUB twice, or turning the K3's power off and back on, unmute the receiver? 73, Rich VE3KI Don W3FPR wrote: That sounds like you have squelch turned on. From ken at arcomcontrollers.com Mon Jan 7 13:11:44 2019 From: ken at arcomcontrollers.com (Ken Arck) Date: Mon, 07 Jan 2019 10:11:44 -0800 Subject: [Elecraft] Annoying WSJT-X Message In-Reply-To: <7FC8F57E-8D68-4474-AE33-EE1674EA456D@comcast.net> References: <7FC8F57E-8D68-4474-AE33-EE1674EA456D@comcast.net> Message-ID: Already discussed - you need to wait for the next release Ken At 09:43 AM 1/7/2019, Richard wrote: >Has anyone figured out how to stop that "2.0 only" message from >popping up every time you launch WSJT-X 2.0? > >Richard - W4KBX >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft at mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html >Message delivered to ken at arcomcontrollers.com ------------------------------------------------------------------------------ President and CTO - Arcom Communications Makers of repeater controllers and accessories. http://www.arcomcontrollers.com/ Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net "We don't just make 'em. We use 'em!" From tommy58 at hvc.rr.com Mon Jan 7 13:20:17 2019 From: tommy58 at hvc.rr.com (Tommy) Date: Mon, 7 Jan 2019 13:20:17 -0500 Subject: [Elecraft] Annoying WSJT-X Message In-Reply-To: <7FC8F57E-8D68-4474-AE33-EE1674EA456D@comcast.net> References: <7FC8F57E-8D68-4474-AE33-EE1674EA456D@comcast.net> Message-ID: <44ddd29c-9d6c-655f-33f7-aff70fa41ac3@hvc.rr.com> ? I understand it will be removed in the next update. 73 de Tom - KB2SMS On 1/7/19 12:43 PM, Richard wrote: > Has anyone figured out how to stop that "2.0 only" message from popping up every time you launch WSJT-X 2.0? > > Richard - W4KBX From rv6amark at yahoo.com Mon Jan 7 13:22:20 2019 From: rv6amark at yahoo.com (rv6amark) Date: Mon, 07 Jan 2019 10:22:20 -0800 Subject: [Elecraft] KAT 500 and open wire Message-ID: Re:? "...what is the old dual air coil Heathkit B-1balun, a current or voltage type?? If I remember correctly, they are 4:1 ratio." From the Heathkit manual:? "The Heathkit Balun Coil Set, Model B-1 is a convenient transmitter accessory which has the capability of matching unbalanced coax lines, used on most modern transmitters, to balanced lines to either 75 ohms or 300 ohms impedance". The manual discusses its use with a dipole (~75 ohms) or a folded dipole (~300 ohms), and the analogy of using a line transmission line to get the desired impedance transformation.? It is a very short but interesting read. The assembly manual shows how to wire it in 1:1 or 4:1 configurations.? The schematic is identical to the Elecraft BL2 , except it uses air core coils instead of ferrite coils, and there is no switch to easily change between impedance ratios.? ? I have never used my BL-2, so I cannot vouch for its effectiveness.? I have often wondered if it might be compromised by the 2 bifilar wound "non-self-shielding" air core coils tightly packed into a metal enclosure resulting in enough capacitance or magnetic coupling to each other and the enclosure to reduce its effectiveness. I do, however, open it up occasionally and admire those beautiful inductors! Mark KE6BB null From frantz at pwpconsult.com Mon Jan 7 13:26:35 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Mon, 7 Jan 2019 10:26:35 -0800 Subject: [Elecraft] Annoying WSJT-X Message In-Reply-To: <20190107181413.0A88B149F84C@mailman.qth.net> Message-ID: Get the wsjt-x sources. Modify them to remove the message. (Probably the easiest way is to comment out the line that causes it to be displayed.) Build wsjt-x and enjoy. 73 Bill AE6JV On 1/7/19 at 10:11 AM, ken at arcomcontrollers.com (Ken Arck) wrote: >Already discussed - you need to wait for the next release > >Ken > > > >At 09:43 AM 1/7/2019, Richard wrote: >>Has anyone figured out how to stop that "2.0 only" message >>from popping up every time you launch WSJT-X 2.0? >> >>Richard - W4KBX --------------------------------------------------------------------------- Bill Frantz |"We used to quip that "password" is the most common 408-356-8506 | password. Now it's 'password1.' Who said users haven't www.pwpconsult.com | learned anything about security?" -- Bruce Schneier From jim at audiosystemsgroup.com Mon Jan 7 13:33:14 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Mon, 7 Jan 2019 10:33:14 -0800 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> Message-ID: On 1/7/2019 8:39 AM, Don Wilhelm wrote: > Even low loss ladder line can have significant loss, especially when wet. N7WS is the guy who did that research and published it several decades ago. It's in one of those excellent ARRL Antenna Compendiums. 73, Jim K9YC From wunder at wunderwood.org Mon Jan 7 14:03:54 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Mon, 7 Jan 2019 11:03:54 -0800 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> Message-ID: <05B5F37B-0660-4926-A31F-63F8039727C3@wunderwood.org> A pre-publication copy of the N7WS QST article from 1999. http://k6mhe.com/n7ws/Ladder_Line.pdf Independent verification of the N7WS experiments, with some nice graphs showing loss when dry, with rainwater, and with frost. The results are fairly similar. http://www.karinya.net/g3txq/wet_ll/ wunder Walter Underwood wunder at wunderwood.org http://observer.wunderwood.org/ (my blog) > On Jan 7, 2019, at 10:33 AM, Jim Brown wrote: > > On 1/7/2019 8:39 AM, Don Wilhelm wrote: >> Even low loss ladder line can have significant loss, especially when wet. > > N7WS is the guy who did that research and published it several decades ago. It's in one of those excellent ARRL Antenna Compendiums. > > 73, Jim K9YC > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From k9ma at sdellington.us Mon Jan 7 14:12:42 2019 From: k9ma at sdellington.us (K9MA) Date: Mon, 7 Jan 2019 13:12:42 -0600 Subject: [Elecraft] KX1 Sold Message-ID: 73, Scott K9MA ************** Slightly modified, no ATU, with KXPD1 paddle. $275 plus shipping KX1 Details -- Scott K9MA k9ma at sdellington.us From doug at kj0f.com Mon Jan 7 16:04:36 2019 From: doug at kj0f.com (Doug Person) Date: Mon, 7 Jan 2019 14:04:36 -0700 Subject: [Elecraft] Small items for sale Message-ID: I have 3 small items I would like to sell:? (please respond off-list if interested) N-GEN WIDEBAND NOISE GENERATOR -- KIT ---- $35 Shipped 1st class USPS N-GEN WIDEBAND NOISE GENERATOR -- BUILT ---- $35 Shipped 1st class USPS XG-1 SIGNAL GENERATOR -- built -- $35 Shipped 1st Class USPS Thanks -- Doug -- KJ0F doug (at) kj0f.com Just for reference - this is what the XG-1 is: Description: The XG1 is a crystal-controlled signal generator with very accurate 1 microvolt and 50 microvolt output levels. The output frequency is 7040 kHz. The unit can be used to determine the actual sensitivity and receive gain of any HF receiver that covers the 40-meter band. The 50-microvolt output can be used for S-meter calibration. The output levels are accurate to better than +/- 2 dB (typically +/- 1 dB). This makes the XG1 a low-cost alternative to expensive lab-grade signal generators when comparing the performance of various receivers. Like Elecraft's other "mini-module" kits, the XG1 is easy to build, as well as small: the PC board is just 3.5 x 1.5 inches. Other features include a power-on LED, on-board battery with low-battery warning LED, and protection against accidental transmit at QRP levels. From w2kj at bellsouth.net Mon Jan 7 16:12:20 2019 From: w2kj at bellsouth.net (Joseph Trombino, Jr) Date: Mon, 7 Jan 2019 16:12:20 -0500 Subject: [Elecraft] New tuning knob for the KX2 Message-ID: Howdy Gang. I love my KX2 but the main tuning knob has always been a problem for me. It?s just a tad too small and not easy to spin rapidly. I found a very nice aluminum knob for the KX2 being sold on eBay by a gentleman in Winterport,ME. The tracking item nr. is: 264113321673. The knob costs $24.95 shipped, is CNC machined aluminum and is black in color?.not exactly cheap but worth every penny IMHO. I just put it on my KX2 and tuning is now a dream?it feels like a much larger knob and the finger dimple is larger than the stock KX2 knob which allows for a nice fit. It also fits the KX1 for all of the KX1 users out there. A very nice addition to my KX2. Now, if only Wayne can find a ball bearing rotary encoder for the KX2 all would be well in the world (grin). Enjoy those Elecraft radios. 73, Joe W2KJ I QRP, therefore I am KX2-KX3 From doug at kj0f.com Mon Jan 7 16:14:29 2019 From: doug at kj0f.com (Doug Person) Date: Mon, 7 Jan 2019 14:14:29 -0700 Subject: [Elecraft] For Sale: K1 Internal Battery Option KBT1 Message-ID: More stuff from the storage room: I have a fresh in-the-box KBT1 unbuilt Internal Battery Option for the K1 Transceiver.? $50 Shipped 1st Class CONUS Please reply off-list Doug -- KJ0F From kk5f at earthlink.net Mon Jan 7 17:32:25 2019 From: kk5f at earthlink.net (Mike Morrow) Date: Mon, 7 Jan 2019 16:32:25 -0600 (GMT-06:00) Subject: [Elecraft] New tuning knob for the KX2 Message-ID: <1353629844.18609.1546900346366@wamui-hamster.atl.sa.earthlink.net> Joe wrote: >I love my KX2 but the main tuning knob has always been a problem for me. > >It?s just a tad too small and not easy to spin rapidly. > >I found a very nice aluminum knob for the KX2 being sold on eBay by a gentleman in Winterport,ME. > >The tracking item nr. is: 264113321673. > >The knob costs $24.95 shipped, is CNC machined aluminum and is black in color?.not exactly cheap but worth every penny IMHO. > >I just put it on my KX2 and tuning is now a dream?it feels like a much larger knob and the finger dimple is larger than the stock KX2 knob which allows for a nice fit. > >It also fits the KX1 for all of the KX1 users out there. > >A very nice addition to my KX2. > >Now, if only Wayne can find a ball bearing rotary encoder for the KX2 all would be well in the world (grin). > >Enjoy those Elecraft radios. > > 73, Joe W2KJ > I QRP, therefore I am Better is "I QRP, therefore I HAM"? To your point, this is what Wayne/N6KR wrote about the KX2 knob, 30 March 2017, on the Elecraft list: ----Start quote---------- In response to various comments on the KX2 knob (today and earlier):? Our goal for the KX2 was to make it really lightweight. Light enough to be used as an HT. Goat-optional on longer hikes.? Even 1 ounce of additional weight can increase fatigue when holding a device (try, for example, carrying around an iPhone 7 vs. an iPhone 7+). So we designed a low-profile plastic VFO A knob that is big enough to get the job done.? Another reason not to use a heavier knob is that the KX2?s VFO encoder is itself a compact unit that has a sleeve bearing. Weighted knobs should in general be used only with heavier, ball-bearing style encoders. On this encoder, a heavy knob would shorten the rotational life.? Regarding adding a dimple: I?ve tried knobs this size with dimples and found that they were hard to use. A matter of taste and fingertip size, I guess. Meanwhile, the present knob can be ?spun? to a certain degree by putting light finger pressure on the rim.? 73,? Wayne? N6KR ----End quote------ Mike / KK5F From rmcgraw at blomand.net Mon Jan 7 18:25:54 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Mon, 7 Jan 2019 17:25:54 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> Message-ID: I use the "window line" for 3 of my antennas. We have less than 125 days/ yr with precipitation of all types. The "loss wet" is a non issue in my thinking as I'm sure would be about the same for most folks. Still with extreme loss, under most conditions, coax will have greater loss. Bob, K4TAX Sent from my iPhone > On Jan 7, 2019, at 11:34 AM, Walter Underwood wrote: > > I think ?window line? is less ambiguous for the stuff separated by plastic with squares cut out. I see ?ladder line? being used to mean either window line or open wire line. > > DX Engineering uses ladder line to mean the plastic dielectric line: https://www.dxengineering.com/search/part-type/ladder-line > > W7FG uses ladder line to mean 600 Ohm open wire line: http://trueladderline.com/w7fg-design-600-ohm-open-wire-feedline/ > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > >> On Jan 7, 2019, at 8:39 AM, Don Wilhelm wrote: >> >> There is a BIG difference between ladder line and open wire transmission line. >> >> Even low loss ladder line can have significant loss, especially when wet. >> >> Open wire feeders can truly be low loss even when operated at high SWR. >> >> So how do you construct proper open wire line? It is most easily done when the 2 wires are under tension and spaced about 6 inches apart with as few insulators between them as possible - the tension keeps the spacing relatively constant - that is practical over a long horizontal run of the transmission line. Then bring it up to the antenna feedpoint with wires spaced apart with insulators, and likewise on the run to the house entry or better yet to the shack - the more insulators, the greater the loss can be. You can use ladder-line from there into the shack, or you can put a good current mode balun at the house entry and from there run a short length of coax to the tuner. >> >> As I have mentioned before, whether a 1:1 balun or a 4:1 balun will work better has to be determined - it depends on the feedline length, the frequency, and the feedpoint impedance of the radiator for that particular frequency. If the feedpoint impedance at the tuner end of the feedline is already low, a 4:1 balun will make it 4 times lower and difficult for your tuner to deal with. >> >> A G5RV antenna on 160 meters will not be very efficient (the high current point will be somewhere down the transmission line and not at the center of the antenna). One thing is true, the RF voltage at the ends of the antenna is the highest, and the highest current is 1/4 wavelength away from the end, even if that is at a point well down the feedline. The equal and opposite currents on the feedline will cancle making that highest current point not useful for radiating a signal. >> >> Radiator lengths greater than 1/2 wavelength can be efficient, but shorter than 1/2 wavelength will be less efficient because the balanced currents on the feedline cancel each other out. That is just plain physics. >> >> 73, >> Don W3FPR >> >> >> >>> On 1/7/2019 10:49 AM, Wes Stewart wrote: >>> Try running that 102' long "G5RV" up 50' on 160 meters. Feed it with 100' of Wireman 553 "low loss" ladderline. The 0.1 dB matched loss turns into over 13 db at the input and that's without considering tuner loss. (Source: EZNEC and TLDetails) >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to wunder at wunderwood.org > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From n6kr at elecraft.com Mon Jan 7 20:48:22 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Mon, 7 Jan 2019 17:48:22 -0800 Subject: [Elecraft] New tuning knob for the KX2 In-Reply-To: <1353629844.18609.1546900346366@wamui-hamster.atl.sa.earthlink.net> References: <1353629844.18609.1546900346366@wamui-hamster.atl.sa.earthlink.net> Message-ID: <833D21A1-076A-4F0D-BFBB-27E96FB1C577@elecraft.com> Nonetheless: to each his own :) Wayne N6KR ---- elecraft.com > On Jan 7, 2019, at 2:32 PM, Mike Morrow wrote: > > Joe wrote: > >> I love my KX2 but the main tuning knob has always been a problem for me. >> >> It?s just a tad too small and not easy to spin rapidly. >> >> I found a very nice aluminum knob for the KX2 being sold on eBay by a gentleman in Winterport,ME. >> >> The tracking item nr. is: 264113321673. >> >> The knob costs $24.95 shipped, is CNC machined aluminum and is black in color?.not exactly cheap but worth every penny IMHO. >> >> I just put it on my KX2 and tuning is now a dream?it feels like a much larger knob and the finger dimple is larger than the stock KX2 knob which allows for a nice fit. >> >> It also fits the KX1 for all of the KX1 users out there. >> >> A very nice addition to my KX2. >> >> Now, if only Wayne can find a ball bearing rotary encoder for the KX2 all would be well in the world (grin). >> >> Enjoy those Elecraft radios. >> >> 73, Joe W2KJ >> I QRP, therefore I am > > Better is "I QRP, therefore I HAM"? > > To your point, this is what Wayne/N6KR wrote about the KX2 knob, 30 March 2017, on the Elecraft list: > > ----Start quote---------- > In response to various comments on the KX2 knob (today and earlier): > > Our goal for the KX2 was to make it really lightweight. Light enough to be used as an HT. Goat-optional on longer hikes. > > Even 1 ounce of additional weight can increase fatigue when holding a device (try, for example, carrying around an iPhone 7 vs. an iPhone 7+). So we designed a low-profile plastic VFO A knob that is big enough to get the job done. > > Another reason not to use a heavier knob is that the KX2?s VFO encoder is itself a compact unit that has a sleeve bearing. Weighted knobs should in general be used only with heavier, ball-bearing style encoders. On this encoder, a heavy knob would shorten the rotational life. > > Regarding adding a dimple: I?ve tried knobs this size with dimples and found that they were hard to use. A matter of taste and fingertip size, I guess. Meanwhile, the present knob can be ?spun? to a certain degree by putting light finger pressure on the rim. > > 73, > Wayne > N6KR > ----End quote------ > > Mike / KK5F > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to n6kr at elecraft.com From kk5f at earthlink.net Mon Jan 7 21:07:39 2019 From: kk5f at earthlink.net (Mike Morrow) Date: Mon, 7 Jan 2019 20:07:39 -0600 (GMT-06:00) Subject: [Elecraft] New tuning knob for the KX2 Message-ID: <1527826879.23492.1546913259433@wamui-hamster.atl.sa.earthlink.net> If **only** we could get the candid and informed evaluation of someone who was *really* familiar with the KX2!! :-) Mike / KK5F K1 #175 (11/2000) KX2 #2211 (11/2017) -----Original Message----- >From: Wayne Burdick >Sent: Jan 7, 2019 7:48 PM >To: Mike Morrow >Cc: Elecraft >Subject: Re: [Elecraft] New tuning knob for the KX2 > >Nonetheless: to each his own :) > >Wayne >N6KR > >---- >elecraft.com > >> On Jan 7, 2019, at 2:32 PM, Mike Morrow wrote: >> >> Joe wrote: >> >>> I love my KX2 but the main tuning knob has always been a problem for me. >>> >>> It?s just a tad too small and not easy to spin rapidly. >>> >>> I found a very nice aluminum knob for the KX2 being sold on eBay by a gentleman in Winterport,ME. >>> >>> The tracking item nr. is: 264113321673. >>> >>> The knob costs $24.95 shipped, is CNC machined aluminum and is black in color?.not exactly cheap but worth every penny IMHO. >>> >>> I just put it on my KX2 and tuning is now a dream?it feels like a much larger knob and the finger dimple is larger than the stock KX2 knob which allows for a nice fit. >>> >>> It also fits the KX1 for all of the KX1 users out there. >>> >>> A very nice addition to my KX2. >>> >>> Now, if only Wayne can find a ball bearing rotary encoder for the KX2 all would be well in the world (grin). >>> >>> Enjoy those Elecraft radios. >>> >>> 73, Joe W2KJ >>> I QRP, therefore I am >> >> Better is "I QRP, therefore I HAM"? >> >> To your point, this is what Wayne/N6KR wrote about the KX2 knob, 30 March 2017, on the Elecraft list: >> >> ----Start quote---------- >> In response to various comments on the KX2 knob (today and earlier): >> >> Our goal for the KX2 was to make it really lightweight. Light enough to be used as an HT. Goat-optional on longer hikes. >> >> Even 1 ounce of additional weight can increase fatigue when holding a device (try, for example, carrying around an iPhone 7 vs. an iPhone 7+). So we designed a low-profile plastic VFO A knob that is big enough to get the job done. >> >> Another reason not to use a heavier knob is that the KX2?s VFO encoder is itself a compact unit that has a sleeve bearing. Weighted knobs should in general be used only with heavier, ball-bearing style encoders. On this encoder, a heavy knob would shorten the rotational life. >> >> Regarding adding a dimple: I?ve tried knobs this size with dimples and found that they were hard to use. A matter of taste and fingertip size, I guess. Meanwhile, the present knob can be ?spun? to a certain degree by putting light finger pressure on the rim. >> >> 73, >> Wayne >> N6KR >> ----End quote------ >> >> Mike / KK5F From eric at elecraft.com Mon Jan 7 21:34:14 2019 From: eric at elecraft.com (Eric Swartz - WA6HHQ, Elecraft) Date: Mon, 7 Jan 2019 18:34:14 -0800 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <8362be67-4eea-20f4-017a-b1bf6caa2ac5@triconet.org> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <8a9ba458-c6d6-9f59-b1ba-cf8a69174a5c@david-woolley.me.uk> <897d368e-ac79-511c-5059-b439f7eff35f@audiosystemsgroup.com> <001b01d4a63f$e6ac29a0$b4047ce0$@erols.com> <9a77a776-5829-f376-7814-3f805567e76c@blomand.net> <8362be67-4eea-20f4-017a-b1bf6caa2ac5@triconet.org> Message-ID: <76438f65-8cd0-c4c6-c924-74565cb8f01c@elecraft.com> Guys - we've long since passed he max posting limit for the list on a single topic. Let's wind this one down at this time. 73, Eric /Moderator (hopefully not for life!..)/ /elecraft.com/ On 1/7/2019 7:45 AM, Wes Stewart wrote: > Then there must be less signal too:-) > Wes? N7WS > > On 1/7/2019 6:48 AM, Bob McGraw K4TAX wrote: > >> ... less noise on receive... >> 73 >> Bob, K4TAX > From indians at xsmail.com Tue Jan 8 05:52:50 2019 From: indians at xsmail.com (Petr, OK1RP/M0SIS) Date: Tue, 8 Jan 2019 03:52:50 -0700 (MST) Subject: [Elecraft] For Sale: K1 Internal Battery Option KBT1 In-Reply-To: References: Message-ID: <1546944770234-0.post@n2.nabble.com> Hi Doug, emailed off-list already. Many thanks. Petr ----- 73 - Petr, OK1RP "Apple & Elecraft freak" B:http://ok1rp.blogspot.com G+:http://goo.gl/w3u2s9 G+: http://goo.gl/gP99xq -- Sent from: http://elecraft.365791.n2.nabble.com/ From n8sbe at arrl.net Tue Jan 8 13:48:42 2019 From: n8sbe at arrl.net (Dave New, N8SBE) Date: Tue, 08 Jan 2019 11:48:42 -0700 Subject: [Elecraft] New tuning knob for the KX2 Message-ID: <20190108114841.1fa1e31b6b6b329ecc65be958babcc1f.d3a2ad1363.wbe@email09.godaddy.com> I"ve always wished for a 'ballistic' interface, i.e. the faster you turn the VFO knob the larger the frequency change per turn. On the other hand, I've suffered poor implementations of that feature (uBitX, anyone?), so it would need to be done carefully, if at all. ICOM seems to have managed to come up with what I feel is a good implementation. I used it for years on my old IC-735 (that I sold to partially fund my upgrade to a K3), and now on my IC-7000 that I still use mobile. One of the things I immediately missed on the K3 was lack of a ballistic VFO interface, and lack of band-stacking registers. I guess that Elecraft has had some edict(?) that they don't like ballistic VFO interfaces, so I guess we will all have to live with a fixed tuning rate. Maybe there is a patent thicket that prevents implementing some of the more popular features on competitive radios? Have said all that, I really like using the RIT knob to move large chunks of frequency quickly. For me it's a lot easier than pushing the rate button to shift the tuning rate on the VFO back and forth. And I became recently aware that there is a solution for the band-stacking registers on the K3/K3s, using a special mode for the keypad memory register recall. I haven't tried it yet, but it is now on my to-do list. On my original K3, I did get the upgraded CNC milled knobs (both A and B) from a 3rd party, and really liked them. I've since gone to a K3s, and let the upgraded knobs go to a friend when he bought my old K3. So far, I've not felt like I need to upgrade the knobs on the K3s. They seem more substantial, somehow. Yes, the knobs on the KX2 are light and small, but somehow it seems apropos for the design. 73, -- Dave, N8SBE Message delivered to n8sbe at arrl.net From donwilh at embarqmail.com Tue Jan 8 14:22:14 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Tue, 8 Jan 2019 14:22:14 -0500 Subject: [Elecraft] New tuning knob for the KX2 In-Reply-To: <20190108114841.1fa1e31b6b6b329ecc65be958babcc1f.d3a2ad1363.wbe@email09.godaddy.com> References: <20190108114841.1fa1e31b6b6b329ecc65be958babcc1f.d3a2ad1363.wbe@email09.godaddy.com> Message-ID: <7d15316b-8611-0ffd-e296-a01a2aef42d0@embarqmail.com> I had "ballistic" tuning on the FT-847 that I had and hated it. Maybe I did not develop the right touch, but I would find when trying to tune quickly up or down a few kHz, I would end up going a MHz or more and have to struggle to get back where I wanted to be. I use the bandswitching provided by the K3 Quick Memories, and have not touched the BAND+/BAND- buttons in years. Read the manual to see how to do it. As far as band-stacking memories, save the current band/freq/etc. in one of the M1-M4 buttons and you can easily come back to that frequency (as long as you don't leave that band). I have the M1-M3 memories for each band set to take me to the center of my CW operating band (M1), Data mode (M2) and SSB (M3) leaving M4 for storing the current VFOs for a quick come back to the prior frequency. It works well for me. 73, Don W3FPR On 1/8/2019 1:48 PM, Dave New, N8SBE wrote: > I"ve always wished for a 'ballistic' interface, i.e. the faster you turn > the VFO knob the larger the frequency change per turn. On the other > hand, I've suffered poor implementations of that feature (uBitX, > anyone?), so it would need to be done carefully, if at all. ICOM seems > to have managed to come up with what I feel is a good implementation. I > used it for years on my old IC-735 (that I sold to partially fund my > upgrade to a K3), and now on my IC-7000 that I still use mobile. One of > the things I immediately missed on the K3 was lack of a ballistic VFO > interface, and lack of band-stacking registers. > > I guess that Elecraft has had some edict(?) that they don't like > ballistic VFO interfaces, so I guess we will all have to live with a > fixed tuning rate. Maybe there is a patent thicket that prevents > implementing some of the more popular features on competitive radios? > > Have said all that, I really like using the RIT knob to move large > chunks of frequency quickly. For me it's a lot easier than pushing the > rate button to shift the tuning rate on the VFO back and forth. And I > became recently aware that there is a solution for the band-stacking > registers on the K3/K3s, using a special mode for the keypad memory > register recall. I haven't tried it yet, but it is now on my to-do > list. > From frantz at pwpconsult.com Tue Jan 8 16:30:28 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Tue, 8 Jan 2019 13:30:28 -0800 Subject: [Elecraft] New tuning knob for the KX2 In-Reply-To: <7d15316b-8611-0ffd-e296-a01a2aef42d0@embarqmail.com> Message-ID: What I would really like for fine adjustment, e.g. one step when tuning weak RTTY, is tactile feedback from the knob. A slight bump for each time the VFO changes by one tuning unit. Note that in today's radios, tuning is not continuous, it is digital, and knowing when you have moved the VFO is useful. I use the M memories for switching between CW, Data A, RTTY, and SSB. No memories left. (I consider a good day on the air is one where I have digital, CW, and voice QSOs.) 73 Bill AE6JV On 1/8/19 at 11:22 AM, donwilh at embarqmail.com (Don Wilhelm) wrote: >I had "ballistic" tuning on the FT-847 that I had and hated >it. Maybe I did not develop the right touch, but I would find >when trying to tune quickly up or down a few kHz, I would end >up going a MHz or more and have to struggle to get back where I >wanted to be. > >... > >I have the M1-M3 memories for each band set to take me to the >center of my CW operating band (M1), Data mode (M2) and SSB >(M3) leaving M4 for storing the current VFOs for a quick come >back to the prior frequency. It works well for me. -------------------------------------------------------------- Bill Frantz | There are now so many exceptions to the 408-356-8506 | Fourth Amendment that it operates only by www.pwpconsult.com | accident. - William Hugh Murray From nr4c at widomaker.com Tue Jan 8 16:40:25 2019 From: nr4c at widomaker.com (Nr4c) Date: Tue, 8 Jan 2019 16:40:25 -0500 Subject: [Elecraft] New tuning knob for the KX2 In-Reply-To: References: Message-ID: <9B76294D-0BE4-4F67-8D9E-82A4A3D1C61D@widomaker.com> My best compromise is to use the KNob or whatever they called it. Set K3 to read 10 Hz and KNob is 1/2 that. Works great for S&P CW and RTTY. Sent from my iPhone ...nr4c. bill > On Jan 8, 2019, at 4:30 PM, Bill Frantz wrote: > > What I would really like for fine adjustment, e.g. one step when tuning weak RTTY, is tactile feedback from the knob. A slight bump for each time the VFO changes by one tuning unit. Note that in today's radios, tuning is not continuous, it is digital, and knowing when you have moved the VFO is useful. > > I use the M memories for switching between CW, Data A, RTTY, and SSB. No memories left. (I consider a good day on the air is one where I have digital, CW, and voice QSOs.) > > 73 Bill AE6JV > >> On 1/8/19 at 11:22 AM, donwilh at embarqmail.com (Don Wilhelm) wrote: >> >> I had "ballistic" tuning on the FT-847 that I had and hated it. Maybe I did not develop the right touch, but I would find when trying to tune quickly up or down a few kHz, I would end up going a MHz or more and have to struggle to get back where I wanted to be. >> >> ... >> >> I have the M1-M3 memories for each band set to take me to the center of my CW operating band (M1), Data mode (M2) and SSB (M3) leaving M4 for storing the current VFOs for a quick come back to the prior frequency. It works well for me. > -------------------------------------------------------------- > Bill Frantz | There are now so many exceptions to the > 408-356-8506 | Fourth Amendment that it operates only by > www.pwpconsult.com | accident. - William Hugh Murray > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From ab2tc at arrl.net Tue Jan 8 19:51:10 2019 From: ab2tc at arrl.net (ab2tc) Date: Tue, 8 Jan 2019 17:51:10 -0700 (MST) Subject: [Elecraft] New tuning knob for the KX2 In-Reply-To: References: <20190108114841.1fa1e31b6b6b329ecc65be958babcc1f.d3a2ad1363.wbe@email09.godaddy.com> <7d15316b-8611-0ffd-e296-a01a2aef42d0@embarqmail.com> Message-ID: <1546995070085-0.post@n2.nabble.com> Hi all, Tactile feedback from the VFO knob? Absolutely no, no, no!! The VFO knob should feel like the old analog VFO and with 10Hz step size it does. No changes please!! AB2TC - Knut Bill Frantz wrote > What I would really like for fine adjustment, e.g. one step when > tuning weak RTTY, is tactile feedback from the knob. A slight > bump for each time the VFO changes by one tuning unit. Note that > in today's radios, tuning is not continuous, it is digital, and > knowing when you have moved the VFO is useful. > > I use the M memories for switching between CW, Data A, RTTY, and > SSB. No memories left. (I consider a good day on the air is one > where I have digital, CW, and voice QSOs.) > > 73 Bill AE6JV > > On 1/8/19 at 11:22 AM, > donwilh@ > (Don Wilhelm) wrote: >> -- Sent from: http://elecraft.365791.n2.nabble.com/ From frantz at pwpconsult.com Tue Jan 8 21:11:33 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Tue, 8 Jan 2019 18:11:33 -0800 Subject: [Elecraft] New tuning knob for the KX2 In-Reply-To: <1546995070085-0.post@n2.nabble.com> Message-ID: Knut - With all due respect, I strongly disagree. With an analog knob, the smallest movement of the knob results in a change of frequency. My K-Pod moves several degrees before the frequency changes. The main knob on the K3 moves less, probably half the number of degrees, but with both knobs it is very hard to know you have made exactly one step in frequency. When I'm tuning weak RTTY, I have my eyes glued to the decode window, not the frequency readout. (I use the K-Pod because I can place it next to the mouse where it is easy to reach.) 73 & GL - Bill AE6JV On 1/8/19 at 4:51 PM, ab2tc at arrl.net (ab2tc) wrote: >Hi all, > >Tactile feedback from the VFO knob? Absolutely no, no, no!! The VFO knob >should feel like the old analog VFO and with 10Hz step size it does. No >changes please!! > >AB2TC - Knut > > >Bill Frantz wrote >>What I would really like for fine adjustment, e.g. one step >>when tuning weak RTTY, is tactile feedback from the knob. A >>slight bump for each time the VFO changes by one tuning unit. >>Note that in today's radios, tuning is not continuous, it is >>digital, and knowing when you have moved the VFO is useful. >> >>I use the M memories for switching between CW, Data A, RTTY, >>and SSB. No memories left. (I consider a good day on the air >>is one where I have digital, CW, and voice QSOs.) >> >>73 Bill AE6JV >> >>On 1/8/19 at 11:22 AM, > >>donwilh@ > >>(Don Wilhelm) wrote: >>> > > > > > >-- >Sent from: http://elecraft.365791.n2.nabble.com/ >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft at mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html >Message delivered to frantz at pwpconsult.com > ------------------------------------------------------------------------------------- Bill Frantz | Government is not reason, it is not eloquence, it is force; like 408-356-8506 | a fire, a troublesome servant and a fearful master. Never for a www.pwpconsult.com | moment should it be left to irresponsible action. Geo Washington From ghyoungman at gmail.com Tue Jan 8 21:29:23 2019 From: ghyoungman at gmail.com (Grant Youngman) Date: Tue, 8 Jan 2019 21:29:23 -0500 Subject: [Elecraft] New tuning knob for the KX2 In-Reply-To: References: Message-ID: We?ve gone from a weighted knob for the KX2 (I don?t own one, so have no opinion) to a dimpled tuning mechanism on the K3. As to that, no thanks. (How ever did we do ham radio without one?) Perhaps a shock device, appropriately connected to the operator, that would fire every time a digit changes? Or maybe just a beep in the monitor every time a digit changes (as long as it can be turned off)? But please no dimpled tuning ? Grant NQ5T K3 #2091 KX3 #8342 > On Jan 8, 2019, at 9:11 PM, Bill Frantz wrote: > > Knut - > > With all due respect, I strongly disagree. With an analog knob, the smallest movement of the knob results in a change of frequency. My K-Pod moves several degrees before the frequency changes. The main knob on the K3 moves less, probably half the number of degrees, but with both knobs it is very hard to know you have made exactly one step in frequency. When I'm tuning weak RTTY, I have my eyes glued to the decode window, not the frequency readout. (I use the K-Pod because I can place it next to the mouse where it is easy to reach.) > From nr4c at widomaker.com Tue Jan 8 22:10:07 2019 From: nr4c at widomaker.com (Nr4c) Date: Tue, 8 Jan 2019 22:10:07 -0500 Subject: [Elecraft] New tuning knob for the KX2 In-Reply-To: References: Message-ID: <4B4AFC2B-D4D2-47D5-9D57-2503D761642C@widomaker.com> I found that for RTTY especially, K-Pod (KNob) is on left and right hand always on mouse at right of keyboard.(Apple Bluetooth ). Sent from my iPhone ...nr4c. bill > On Jan 8, 2019, at 9:11 PM, Bill Frantz wrote: > > Knut - > > With all due respect, I strongly disagree. With an analog knob, the smallest movement of the knob results in a change of frequency. My K-Pod moves several degrees before the frequency changes. The main knob on the K3 moves less, probably half the number of degrees, but with both knobs it is very hard to know you have made exactly one step in frequency. When I'm tuning weak RTTY, I have my eyes glued to the decode window, not the frequency readout. (I use the K-Pod because I can place it next to the mouse where it is easy to reach.) > > 73 & GL - Bill AE6JV > >> On 1/8/19 at 4:51 PM, ab2tc at arrl.net (ab2tc) wrote: >> >> Hi all, >> >> Tactile feedback from the VFO knob? Absolutely no, no, no!! The VFO knob >> should feel like the old analog VFO and with 10Hz step size it does. No >> changes please!! >> >> AB2TC - Knut >> >> >> Bill Frantz wrote >>> What I would really like for fine adjustment, e.g. one step when tuning weak RTTY, is tactile feedback from the knob. A slight bump for each time the VFO changes by one tuning unit. Note that in today's radios, tuning is not continuous, it is digital, and knowing when you have moved the VFO is useful. >>> >>> I use the M memories for switching between CW, Data A, RTTY, and SSB. No memories left. (I consider a good day on the air is one where I have digital, CW, and voice QSOs.) >>> >>> 73 Bill AE6JV >>> >>> On 1/8/19 at 11:22 AM, >> >>> donwilh@ >> >>> (Don Wilhelm) wrote: >>>> >> >> >> >> >> >> -- >> Sent from: http://elecraft.365791.n2.nabble.com/ >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to frantz at pwpconsult.com >> > ------------------------------------------------------------------------------------- > Bill Frantz | Government is not reason, it is not eloquence, it is force; like > 408-356-8506 | a fire, a troublesome servant and a fearful master. Never for a > www.pwpconsult.com | moment should it be left to irresponsible action. Geo Washington > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From rmcgraw at blomand.net Tue Jan 8 22:27:19 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Tue, 8 Jan 2019 21:27:19 -0600 Subject: [Elecraft] New tuning knob for the KX2 In-Reply-To: <4B4AFC2B-D4D2-47D5-9D57-2503D761642C@widomaker.com> References: <4B4AFC2B-D4D2-47D5-9D57-2503D761642C@widomaker.com> Message-ID: <14A3BE84-26EF-4B86-99E4-E560FDA44610@blomand.net> Regardless of what is added, how it works, or what it does, there will always be those that like it. And likewise, there will be those that object and won't like it. It needs to fit the needs of the masses. I've worked systems both ways. I like it the way it works at present. 73 Bob, K4TAX Sent from my iPhone > On Jan 8, 2019, at 9:10 PM, Nr4c wrote: > > I found that for RTTY especially, K-Pod (KNob) is on left and right hand always on mouse at right of keyboard.(Apple Bluetooth ). > > Sent from my iPhone > ...nr4c. bill > > >> On Jan 8, 2019, at 9:11 PM, Bill Frantz wrote: >> >> Knut - >> >> With all due respect, I strongly disagree. With an analog knob, the smallest movement of the knob results in a change of frequency. My K-Pod moves several degrees before the frequency changes. The main knob on the K3 moves less, probably half the number of degrees, but with both knobs it is very hard to know you have made exactly one step in frequency. When I'm tuning weak RTTY, I have my eyes glued to the decode window, not the frequency readout. (I use the K-Pod because I can place it next to the mouse where it is easy to reach.) >> >> 73 & GL - Bill AE6JV >> >>> On 1/8/19 at 4:51 PM, ab2tc at arrl.net (ab2tc) wrote: >>> >>> Hi all, >>> >>> Tactile feedback from the VFO knob? Absolutely no, no, no!! The VFO knob >>> should feel like the old analog VFO and with 10Hz step size it does. No >>> changes please!! >>> >>> AB2TC - Knut >>> >>> >>> Bill Frantz wrote >>>> What I would really like for fine adjustment, e.g. one step when tuning weak RTTY, is tactile feedback from the knob. A slight bump for each time the VFO changes by one tuning unit. Note that in today's radios, tuning is not continuous, it is digital, and knowing when you have moved the VFO is useful. >>>> >>>> I use the M memories for switching between CW, Data A, RTTY, and SSB. No memories left. (I consider a good day on the air is one where I have digital, CW, and voice QSOs.) >>>> >>>> 73 Bill AE6JV >>>> >>>> On 1/8/19 at 11:22 AM, >>> >>>> donwilh@ >>> >>>> (Don Wilhelm) wrote: >>>>> >>> >>> >>> >>> >>> >>> -- >>> Sent from: http://elecraft.365791.n2.nabble.com/ >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to frantz at pwpconsult.com >>> >> ------------------------------------------------------------------------------------- >> Bill Frantz | Government is not reason, it is not eloquence, it is force; like >> 408-356-8506 | a fire, a troublesome servant and a fearful master. Never for a >> www.pwpconsult.com | moment should it be left to irresponsible action. Geo Washington >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to nr4c at widomaker.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From w6jhb at me.com Tue Jan 8 22:00:43 2019 From: w6jhb at me.com (James Bennett) Date: Tue, 8 Jan 2019 19:00:43 -0800 Subject: [Elecraft] Yama CM-500 Replacement Message-ID: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> Sad to say, but my trusty old CM-500 headphones with boom mic finally bit the dust. The ear pads had started rotting away, leaving me with black pieces of gunk on my ears after every on-air session. Tried replacing the pads with a set of Koss pads but they simply were too small and I wound up breaking off the connectors going to the speakers. Life is too short to spend any more time messing with them, so it?s time to look for a replacement. I?d like to hear from others who are using a similar type of headphone/mic combo - one that is a direct plug-in to the back of a K3 like the Yamaha CM-500. If Yamaha would offer replacement parts to their users I?d consider getting another CM-500, but they don?t and I?m not inclined to buy something again that cannot easily be repaired. Suggestions?? Jim / w6JHB From wunder at wunderwood.org Wed Jan 9 00:51:15 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Tue, 8 Jan 2019 21:51:15 -0800 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> Message-ID: <5C826D21-71A5-4260-ACD7-CFDB380AD2DB@wunderwood.org> I?ve heard good things about the Koss SB-45. It has an electret mic and is about half the cost of the CM-500, at $25. I have not used the SB-45. https://www.amazon.com/Koss-sb45-SB-45-Communication-Stereophones/dp/B00081A2CW I would not get the Koss SB-40. That looks like the Yamaha, but has a dynamic mic that has gotten some bad reports. A while back, I took a close look at the mic plug on my Yamaha CM-500 headset. It is labeled ?Koss?. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 8, 2019, at 7:00 PM, James Bennett via Elecraft wrote: > > Sad to say, but my trusty old CM-500 headphones with boom mic finally bit the dust. The ear pads had started rotting away, leaving me with black pieces of gunk on my ears after every on-air session. Tried replacing the pads with a set of Koss pads but they simply were too small and I wound up breaking off the connectors going to the speakers. Life is too short to spend any more time messing with them, so it?s time to look for a replacement. > > I?d like to hear from others who are using a similar type of headphone/mic combo - one that is a direct plug-in to the back of a K3 like the Yamaha CM-500. If Yamaha would offer replacement parts to their users I?d consider getting another CM-500, but they don?t and I?m not inclined to buy something again that cannot easily be repaired. > > Suggestions?? > > Jim / w6JHB > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From mike.harris at horizon.co.fk Wed Jan 9 06:38:08 2019 From: mike.harris at horizon.co.fk (Mike Harris) Date: Wed, 9 Jan 2019 08:38:08 -0300 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: <5C826D21-71A5-4260-ACD7-CFDB380AD2DB@wunderwood.org> References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> <5C826D21-71A5-4260-ACD7-CFDB380AD2DB@wunderwood.org> Message-ID: <88571dac-805d-8ecf-a717-268898557794@horizon.co.fk> Hi, I bought a pair of Koss SB-45 when my CM-500 ear cushion covers started disintegrating leaving the dreaded black dandruff. My wife fabricated a couple of fabric covers and the problem was resolved. Recently I was sent a pair of fabric earphone covers by a friend obtained from Amazon who for some reason won't ship to the Falklands. They are simple elasticated covers and they slip over the ear pieces. A satisfactory extension to the life of the CM-500. Returning to the Koss SB-45. I substituted them for the CM-500 and a local could hardly detect any difference. The mic boom is a bit more springy and take a bit more effort to tailor to the individual preference. The cord is much lighter than the CM-500 which could be a weak point. Mine have been in the draw for a couple of years unused because the CM-500 are refusing to die. Regards, Mike VP8NO On 09/01/2019 02:51, Walter Underwood wrote: > I?ve heard good things about the Koss SB-45. It has an electret mic and is about half the cost of the CM-500, at $25. I have not used the SB-45. > > https://www.amazon.com/Koss-sb45-SB-45-Communication-Stereophones/dp/B00081A2CW > > I would not get the Koss SB-40. That looks like the Yamaha, but has a dynamic mic that has gotten some bad reports. > > A while back, I took a close look at the mic plug on my Yamaha CM-500 headset. It is labeled ?Koss?. > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) From rthorne at rthorne.net Wed Jan 9 07:11:00 2019 From: rthorne at rthorne.net (Richard Thorne) Date: Wed, 9 Jan 2019 06:11:00 -0600 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> Message-ID: <265fb2a4-3a27-d832-ea48-c24e7999046c@rthorne.net> Jim, I have a pair of Yamaha C-500's which I like a lot, however, I wanted to try something different that was built a little better. I picked up an Inrad W1 from Vibroplex.? Physically they are built much better than the CM-500.? They are over the ear like the CM-500's and they do a bit better job keeping the noise out. They are a little heavier than the CM-500 and have a a little more pressure (ie clamping) on your head. You will need a 1/4" to 1/8" stereo adapter for the phones if your rig has an 1/8" jack for the headphones. I've had the headset since October and used it for a serious effort during Nov Sweepstakes.? I had no issues during the 24 hour contest.? They are keepers in my opinion. The mic is dynamic and I'm getting good audio reports. They are in a different price range than the CM-500 but worth adding to your list of candidates. Rich - N5ZC On 1/8/2019 9:00 PM, James Bennett via Elecraft wrote: > Sad to say, but my trusty old CM-500 headphones with boom mic finally bit the dust. The ear pads had started rotting away, leaving me with black pieces of gunk on my ears after every on-air session. Tried replacing the pads with a set of Koss pads but they simply were too small and I wound up breaking off the connectors going to the speakers. Life is too short to spend any more time messing with them, so it?s time to look for a replacement. > > I?d like to hear from others who are using a similar type of headphone/mic combo - one that is a direct plug-in to the back of a K3 like the Yamaha CM-500. If Yamaha would offer replacement parts to their users I?d consider getting another CM-500, but they don?t and I?m not inclined to buy something again that cannot easily be repaired. > > Suggestions?? > > Jim / w6JHB > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rthorne at rthorne.net From dave at nk7z.net Wed Jan 9 08:24:12 2019 From: dave at nk7z.net (Dave Cole (NK7Z)) Date: Wed, 9 Jan 2019 05:24:12 -0800 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: <88571dac-805d-8ecf-a717-268898557794@horizon.co.fk> References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> <5C826D21-71A5-4260-ACD7-CFDB380AD2DB@wunderwood.org> <88571dac-805d-8ecf-a717-268898557794@horizon.co.fk> Message-ID: <2ab34dbd-bcd6-b37d-3aaa-00dac02316d8@nk7z.net> The part of the Amazon ad located at: https://www.amazon.com/Koss-sb45-SB-45-Communication-Stereophones/dp/B00081A2CW that says: "Oxygen-free copper voice coils improve signal transmission & conduction for a clearer & louder sound." makes me wonder about the rest of the statements on the ad... 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Contest ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 1/9/19 3:38 AM, Mike Harris via Elecraft wrote: > Hi, > > I bought a pair of Koss SB-45 when my CM-500 ear cushion covers started > disintegrating leaving the dreaded black dandruff. My wife fabricated a > couple of fabric covers and the problem was resolved. Recently I was > sent a pair of fabric earphone covers by a friend obtained from Amazon > who for some reason won't ship to the Falklands. They are simple > elasticated covers and they slip over the ear pieces. A satisfactory > extension to the life of the CM-500. > > Returning to the Koss? SB-45. I substituted them for the CM-500 and a > local could hardly detect any difference. The mic boom is a bit more > springy and take a bit more effort to tailor to the individual > preference. The cord is much lighter than the CM-500 which could be a > weak point. Mine have been in the draw for a couple of years unused > because the CM-500 are refusing to die. > > Regards, > > Mike VP8NO > > > > On 09/01/2019 02:51, Walter Underwood wrote: >> I?ve heard good things about the Koss SB-45. It has an electret mic >> and is about half the cost of the CM-500, at $25. I have not used the >> SB-45. >> >> https://www.amazon.com/Koss-sb45-SB-45-Communication-Stereophones/dp/B00081A2CW >> >> >> I would not get the Koss SB-40. That looks like the Yamaha, but has a >> dynamic mic that has gotten some bad reports. >> >> A while back, I took a close look at the mic plug on my Yamaha CM-500 >> headset. It is labeled ?Koss?. >> >> wunder >> K6WRU >> Walter Underwood >> CM87wj >> http://observer.wunderwood.org/ (my blog) > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to dave at nk7z.net From rmcgraw at blomand.net Wed Jan 9 09:05:48 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Wed, 9 Jan 2019 08:05:48 -0600 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> Message-ID: I suggest another set of CM-500's.??? They may last 2 years, 5 years or 10 years before they are headed for the trash.?? Just look at it as a consumable item and that is just the cost of ownership. 73 Bob, K4TAX On 1/8/2019 9:00 PM, James Bennett via Elecraft wrote: > Sad to say, but my trusty old CM-500 headphones with boom mic finally bit the dust. The ear pads had started rotting away, leaving me with black pieces of gunk on my ears after every on-air session. Tried replacing the pads with a set of Koss pads but they simply were too small and I wound up breaking off the connectors going to the speakers. Life is too short to spend any more time messing with them, so it?s time to look for a replacement. > > I?d like to hear from others who are using a similar type of headphone/mic combo - one that is a direct plug-in to the back of a K3 like the Yamaha CM-500. If Yamaha would offer replacement parts to their users I?d consider getting another CM-500, but they don?t and I?m not inclined to buy something again that cannot easily be repaired. > > Suggestions?? > > Jim / w6JHB > From rmcgraw at blomand.net Wed Jan 9 09:09:21 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Wed, 9 Jan 2019 08:09:21 -0600 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: <5C826D21-71A5-4260-ACD7-CFDB380AD2DB@wunderwood.org> References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> <5C826D21-71A5-4260-ACD7-CFDB380AD2DB@wunderwood.org> Message-ID: <620dc624-2ef4-5d7e-0444-e2b3a8e8f8e5@blomand.net> I have and use the Koss SB-40.? I get great audio reports. Yes, I agree,? if the mike is not positioned correctly and the TX EQ not set correctly, it can sound bad.?? So can any other mike where good mike technique and application is not correctly used. 73 Bob, K4TAX On 1/8/2019 11:51 PM, Walter Underwood wrote: > I?ve heard good things about the Koss SB-45. It has an electret mic and is about half the cost of the CM-500, at $25. I have not used the SB-45. > > https://www.amazon.com/Koss-sb45-SB-45-Communication-Stereophones/dp/B00081A2CW > > I would not get the Koss SB-40. That looks like the Yamaha, but has a dynamic mic that has gotten some bad reports. > > A while back, I took a close look at the mic plug on my Yamaha CM-500 headset. It is labeled ?Koss?. > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > >> On Jan 8, 2019, at 7:00 PM, James Bennett via Elecraft wrote: >> >> Sad to say, but my trusty old CM-500 headphones with boom mic finally bit the dust. The ear pads had started rotting away, leaving me with black pieces of gunk on my ears after every on-air session. Tried replacing the pads with a set of Koss pads but they simply were too small and I wound up breaking off the connectors going to the speakers. Life is too short to spend any more time messing with them, so it?s time to look for a replacement. >> >> I?d like to hear from others who are using a similar type of headphone/mic combo - one that is a direct plug-in to the back of a K3 like the Yamaha CM-500. If Yamaha would offer replacement parts to their users I?d consider getting another CM-500, but they don?t and I?m not inclined to buy something again that cannot easily be repaired. >> >> Suggestions?? >> >> Jim / w6JHB >> >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to wunder at wunderwood.org > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From dick at elecraft.com Wed Jan 9 09:37:04 2019 From: dick at elecraft.com (dick at elecraft.com) Date: Wed, 9 Jan 2019 06:37:04 -0800 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: <265fb2a4-3a27-d832-ea48-c24e7999046c@rthorne.net> References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> <265fb2a4-3a27-d832-ea48-c24e7999046c@rthorne.net> Message-ID: <000801d4a828$cac98670$605c9350$@elecraft.com> These are personal opinions, and headphones are a personal topic... I have a substantial headphone collection from all the usual suspects gathered over the years. I seem to collect these things. An Inrad W1 from Vibroplex has become my favorite. My preferred headphone jacks are 1/4", and I've had trouble with 3.5mm to 1/4" adapters from another manufacturer staying solidly connected. I find the W1 more comfortable than most other headsets I have. It has a relatively long cord and feels and looks sturdy. They grip my head a bit less tightly and feel a bit lighter than some of the other high-end over-ear headsets, but the isolation is quite good. I also like its dynamic microphone. I found a Sony wireless (Bluetooth) noise-cancelling headset WH1000XM3 on sale at Costco recently. It also has a wired connection, and should be useful to listen to content from my mobile phone or tablet when on an airplane, or to plug into the plane's entertainment system. It lacks a microphone. It's relatively light and comfortable, but I haven't yet used it for a long contest. My old favorite Sony MD-V headset is still sometimes a good fit. I think it's now called an MDR-7506. It also lacks a microphone. I find it helpful to change headsets from time to time, just to change the pressure points. So I have several headsets around... 73 de Dick, K6KR -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Richard Thorne Sent: Wednesday, January 9, 2019 04:11 To: James Bennett ; Elecraft Reflector Reflector Subject: Re: [Elecraft] Yama CM-500 Replacement Jim, I have a pair of Yamaha C-500's which I like a lot, however, I wanted to try something different that was built a little better. I picked up an Inrad W1 from Vibroplex. Physically they are built much better than the CM-500. They are over the ear like the CM-500's and they do a bit better job keeping the noise out. They are a little heavier than the CM-500 and have a a little more pressure (ie clamping) on your head. You will need a 1/4" to 1/8" stereo adapter for the phones if your rig has an 1/8" jack for the headphones. I've had the headset since October and used it for a serious effort during Nov Sweepstakes. I had no issues during the 24 hour contest. They are keepers in my opinion. The mic is dynamic and I'm getting good audio reports. They are in a different price range than the CM-500 but worth adding to your list of candidates. Rich - N5ZC On 1/8/2019 9:00 PM, James Bennett via Elecraft wrote: > Sad to say, but my trusty old CM-500 headphones with boom mic finally bit the dust. The ear pads had started rotting away, leaving me with black pieces of gunk on my ears after every on-air session. Tried replacing the pads with a set of Koss pads but they simply were too small and I wound up breaking off the connectors going to the speakers. Life is too short to spend any more time messing with them, so it?s time to look for a replacement. > > I?d like to hear from others who are using a similar type of headphone/mic combo - one that is a direct plug-in to the back of a K3 like the Yamaha CM-500. If Yamaha would offer replacement parts to their users I?d consider getting another CM-500, but they don?t and I?m not inclined to buy something again that cannot easily be repaired. > > Suggestions?? > > Jim / w6JHB > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to > rthorne at rthorne.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to dick at elecraft.com From wa2lbi at gmail.com Wed Jan 9 10:09:47 2019 From: wa2lbi at gmail.com (Ken Winterling) Date: Wed, 9 Jan 2019 10:09:47 -0500 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: <000801d4a828$cac98670$605c9350$@elecraft.com> References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> <265fb2a4-3a27-d832-ea48-c24e7999046c@rthorne.net> <000801d4a828$cac98670$605c9350$@elecraft.com> Message-ID: Dick, You said ?My preferred headphone jacks are 1/4", and I've had trouble with 3.5mm to 1/4" adapters from another manufacturer staying solidly connected.? I agree, the 1/4? jacks/plugs are more rugged than the 3.5mm especially for devices like headphones that are constantly plugged/unplugged. I rarely use ?adapters? except for testing or ?emergencies? as they put a strain on the panel-mounted jack especially if the jack is a 3.5mm supporting a 1/4? plug. That is a long ?lever? sticking out of the panel on a tiny plug. it is prone to damaging the panel jack and can be easily bent by accidentally bumping it or pulling it sideways with the headphones. My preference is to use ?adapter cables? with a proper mating plug and jack on a short cord. It takes the strain off the panel-mounted jack. The cord should be long enough so that the jack is laying on the operating desk when the plug is inserted in the panel jack. You can buy cords with the proper plugs and jacks or build them yourself. This is also applicable to those RJ-45 type mic connectors. I use a short CAT5/CAT6 cable with a dual female data coupler to connect the mic to the rig. Use an adapter for every mic with a RJ-45 and will probably never experience a failure of the mic plug clip. If the adapter cable clip breaks you only need to replace the short CAT cable jumper. I have used adapter cords for years and never had damage to any mic or panel jack. Ken WA2LBI On Wed, Jan 9, 2019 at 09:37 wrote: > These are personal opinions, and headphones are a personal topic... I > have a substantial headphone collection from all the usual suspects > gathered over the years. I seem to collect these things. > > An Inrad W1 from Vibroplex has become my favorite. My preferred headphone > jacks are 1/4", and I've had trouble with 3.5mm to 1/4" adapters from > another manufacturer staying solidly connected. I find the W1 more > comfortable than most other headsets I have. It has a relatively long cord > and feels and looks sturdy. They grip my head a bit less tightly and feel a > bit lighter than some of the other high-end over-ear headsets, but the > isolation is quite good. I also like its dynamic microphone. > > I found a Sony wireless (Bluetooth) noise-cancelling headset WH1000XM3 on > sale at Costco recently. It also has a wired connection, and should be > useful to listen to content from my mobile phone or tablet when on an > airplane, or to plug into the plane's entertainment system. It lacks a > microphone. It's relatively light and comfortable, but I haven't yet used > it for a long contest. > > My old favorite Sony MD-V headset is still sometimes a good fit. I think > it's now called an MDR-7506. It also lacks a microphone. > > I find it helpful to change headsets from time to time, just to change the > pressure points. So I have several headsets around... > > 73 de Dick, K6KR > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net > On Behalf Of Richard Thorne > Sent: Wednesday, January 9, 2019 04:11 > To: James Bennett ; Elecraft Reflector Reflector < > elecraft at mailman.qth.net> > Subject: Re: [Elecraft] Yama CM-500 Replacement > > Jim, > > I have a pair of Yamaha C-500's which I like a lot, however, I wanted to > try something different that was built a little better. > > I picked up an Inrad W1 from Vibroplex. Physically they are built much > better than the CM-500. They are over the ear like the CM-500's and they > do a bit better job keeping the noise out. > > They are a little heavier than the CM-500 and have a a little more > pressure (ie clamping) on your head. > > You will need a 1/4" to 1/8" stereo adapter for the phones if your rig has > an 1/8" jack for the headphones. > > I've had the headset since October and used it for a serious effort during > Nov Sweepstakes. I had no issues during the 24 hour contest. They are > keepers in my opinion. > > The mic is dynamic and I'm getting good audio reports. > > They are in a different price range than the CM-500 but worth adding to > your list of candidates. > > Rich - N5ZC > > On 1/8/2019 9:00 PM, James Bennett via Elecraft wrote: > > Sad to say, but my trusty old CM-500 headphones with boom mic finally > bit the dust. The ear pads had started rotting away, leaving me with black > pieces of gunk on my ears after every on-air session. Tried replacing the > pads with a set of Koss pads but they simply were too small and I wound up > breaking off the connectors going to the speakers. Life is too short to > spend any more time messing with them, so it?s time to look for a > replacement. > > > > I?d like to hear from others who are using a similar type of > headphone/mic combo - one that is a direct plug-in to the back of a K3 like > the Yamaha CM-500. If Yamaha would offer replacement parts to their users > I?d consider getting another CM-500, but they don?t and I?m not inclined to > buy something again that cannot easily be repaired. > > > > Suggestions?? > > > > Jim / w6JHB > > > > > > > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net Please help support this email > > list: http://www.qsl.net/donate.html Message delivered to > > rthorne at rthorne.net > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to dick at elecraft.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wa2lbi at gmail.com -- Ken WA2LBI Sent from one of my mobile devices From rmcgraw at blomand.net Wed Jan 9 10:33:49 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Wed, 9 Jan 2019 09:33:49 -0600 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> <265fb2a4-3a27-d832-ea48-c24e7999046c@rthorne.net> <000801d4a828$cac98670$605c9350$@elecraft.com> Message-ID: With regard to "constantly plugged/unplugged",?? I leave mine plugged in the rear of my K3S all of the time.? I use the PF2 function configured to switch between SPKR on/off and Headphones and? switch the mike from the front to the rear being the boom mike on the headphones.? ? No adapters required. ? Just push a button and all is correctly configured. 73 Bob, K4TAX On 1/9/2019 9:09 AM, Ken Winterling wrote: > Dick, > > You said ?My preferred headphone jacks are 1/4", and I've had trouble with > 3.5mm to 1/4" adapters from another manufacturer staying solidly > connected.? I agree, the 1/4? jacks/plugs are more rugged than the 3.5mm > especially for devices like headphones that are constantly > plugged/unplugged. > > From joseph.durnal at gmail.com Wed Jan 9 11:05:45 2019 From: joseph.durnal at gmail.com (Joseph M. Durnal) Date: Wed, 9 Jan 2019 11:05:45 -0500 Subject: [Elecraft] KAT3A & KIO3B Upgrade for my K3 Message-ID: I had written up a nice couple of e-mails for the reflector asking about upgrading my K3 with a KAT3A & KIO3B. But I went ahead and clicked check out. I'm really looking forward to cutting down a bit on the boxes and wires on my desk. I couldn't think of a more expensive way of doing that! I think my only regret will be that I'll still need my separate FSK interface, yeah yeah, AFSK, but if Elecraft didn't want us to use FSK, they wouldn't have put it in the radio. Thanks & 73 de Joseph M. Durnal - NE3R From tjdooley at comcast.net Wed Jan 9 12:02:28 2019 From: tjdooley at comcast.net (THOMAS Dooley) Date: Wed, 9 Jan 2019 12:02:28 -0500 (EST) Subject: [Elecraft] Fo(3):Best wishes!!! Message-ID: <1205646253.279020.1547053348634@connect.xfinity.com> https://www.msn.com/35299.htm?3735=cavncxju&16479=66876&gkno=6398429 http://alexandraknows.pw/comments/ya51llqui.php/09707.htm?677392=uwkmgwpq&5629=2951536&owri=94798986 hey, how are you doing! It is better than all weight loss diets ------------------------------ 09.01.2019 20:02:33 I am very grateful to you for what you are reading The measure of your faith is the measure of the pain you can endure , the Teacher had told him Objects in the mirror are closer than they appear... Since fat is much more efficient-and has more capacity to store energy-than glucose, we can Over 90% of NWCR participants say that they exercise almost every Amelia Andrade -------------------------------- From garyk9gs at wi.rr.com Wed Jan 9 12:53:10 2019 From: garyk9gs at wi.rr.com (Gary K9GS) Date: Wed, 09 Jan 2019 11:53:10 -0600 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: <265fb2a4-3a27-d832-ea48-c24e7999046c@rthorne.net> Message-ID: I used a pair of Inrad W1s for CQWW and I liked them so much that I asked for a pair for Christmas.? I have not tried them yet. They are well made and very comfortable.? Note that for CQWW I used them with an ICOM 7851 and not a K3. I'll use them this weekend with my K3 in the NAQP CW contest . 73, Gary K9GS -------- Original message --------From: Richard Thorne Date: 1/9/19 6:11 AM (GMT-06:00) To: James Bennett , Elecraft Reflector Reflector Subject: Re: [Elecraft] Yama CM-500 Replacement Jim, I have a pair of Yamaha C-500's which I like a lot, however, I wanted to try something different that was built a little better. I picked up an Inrad W1 from Vibroplex.? Physically they are built much better than the CM-500.? They are over the ear like the CM-500's and they do a bit better job keeping the noise out. They are a little heavier than the CM-500 and have a a little more pressure (ie clamping) on your head. You will need a 1/4" to 1/8" stereo adapter for the phones if your rig has an 1/8" jack for the headphones. I've had the headset since October and used it for a serious effort during Nov Sweepstakes.? I had no issues during the 24 hour contest.? They are keepers in my opinion. The mic is dynamic and I'm getting good audio reports. They are in a different price range than the CM-500 but worth adding to your list of candidates. Rich - N5ZC On 1/8/2019 9:00 PM, James Bennett via Elecraft wrote: > Sad to say, but my trusty old CM-500 headphones with boom mic finally bit the dust. The ear pads had started rotting away, leaving me with black pieces of gunk on my ears after every on-air session. Tried replacing the pads with a set of Koss pads but they simply were too small and I wound up breaking off the connectors going to the speakers. Life is too short to spend any more time messing with them, so it?s time to look for a replacement. > > I?d like to hear from others who are using a similar type of headphone/mic combo - one that is a direct plug-in to the back of a K3 like the Yamaha CM-500. If Yamaha would offer replacement parts to their users I?d consider getting another CM-500, but they don?t and I?m not inclined to buy something again that cannot easily be repaired. > > Suggestions?? > > Jim / w6JHB > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rthorne at rthorne.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to garyk9gs at wi.rr.com From no9e at arrl.net Wed Jan 9 13:19:06 2019 From: no9e at arrl.net (Ignacy) Date: Wed, 9 Jan 2019 11:19:06 -0700 (MST) Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> Message-ID: <1547057946958-0.post@n2.nabble.com> CM-500 is OK. It had so-so sound insulation (not good with loud amp) and it disintegrated. Now I use Sennheiser PC 350. Much better built and better sound insulation. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ From eaopa at comcast.net Wed Jan 9 13:34:37 2019 From: eaopa at comcast.net (Gene O) Date: Wed, 9 Jan 2019 13:34:37 -0500 Subject: [Elecraft] K2 - (K2-100) aux I/O Message-ID: I have a K2 with the 100W, K2/100, mounted in the top.? I want to obtain a RS232 cable with male DB9 on one end and female on the other. In order to make the connection in the back or the K2 it seems the male plug needs to be modified.? That is a slot cut so that it fits the key/tab that is on the connector mounted in the back of the K2/100. Is there any problem with this as long as the cable just has the typical 3 wires for RS232 data? Thanks. Gene - W2BXR From djwilcox01 at yahoo.com Wed Jan 9 13:58:04 2019 From: djwilcox01 at yahoo.com (David Wilcox) Date: Wed, 9 Jan 2019 18:58:04 +0000 (UTC) Subject: [Elecraft] Headphone issue References: <1027047393.8883220.1547060284119.ref@mail.yahoo.com> Message-ID: <1027047393.8883220.1547060284119@mail.yahoo.com> I have a K2 built by another ham and am getting used to it.? I I recently discovered that when I plug my headphones into the headphone jack on the front the speaker still is active as before.? The only way I can disable the speaker is to insert another plug into the speaker jack on the back. Is this the way this radio is supposed to operate or is there a wiring error somewhere?? I have looked through the K2 manual and find nothing about the headphone jack except that it is for plugging in the headphones. ? Thank you. Dave K8WPE | | Virus-free. www.avg.com | From donwilh at embarqmail.com Wed Jan 9 13:58:25 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 9 Jan 2019 13:58:25 -0500 Subject: [Elecraft] K2 - (K2-100) aux I/O In-Reply-To: References: Message-ID: <1b1bcaa7-6c9f-faba-cecc-0e8867b1e560@embarqmail.com> Gene, You must NOT plug a standard serial cable into that 9 pin AUX connector. It is not RS-232 although there are 3 RS-232 signal lines in the connector. The remaining signals are internal K2 signals that are used with external Elecraft equipment like the KAT100, the KRC2 and the XV series transverters. Plugging a full serial cable into the K2 can damage those signal lines and/or the RS-232 port (there are more than 3 wires in a standard serial cable. You MUST use the special cable shown in the KIO2 or KPA100 manual. It does not have to be very long, but it must be present. That projection on the DE9 connector on your K2 is an effort by some builders to prevent using the wrong cable in the connector - it is not stock, but is a good idea. Yes, to use a connector that has been modified, you will need to make a mating slot in your cable connector. I am not certain where that modification is documented, it has been many years ago that someone presented the idea. 73, Don W3FPR On 1/9/2019 1:34 PM, Gene O wrote: > I have a K2 with the 100W, K2/100, mounted in the top.? I want to obtain > a RS232 cable with male DB9 on one end and female on the other. > > In order to make the connection in the back or the K2 it seems the male > plug needs to be modified.? That is a slot cut so that it fits the > key/tab that is on the connector mounted in the back of the K2/100. > > Is there any problem with this as long as the cable just has the typical > 3 wires for RS232 data? > From donwilh at embarqmail.com Wed Jan 9 14:27:30 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 9 Jan 2019 14:27:30 -0500 Subject: [Elecraft] Headphone issue In-Reply-To: <1027047393.8883220.1547060284119@mail.yahoo.com> References: <1027047393.8883220.1547060284119.ref@mail.yahoo.com> <1027047393.8883220.1547060284119@mail.yahoo.com> Message-ID: <00cf8191-8d68-bcaf-606d-8117ad0fc89e@embarqmail.com> Dave, That is one failure mode of the headphone jack in the K2. There is a little switch in the rear of the headphone jack that turns the speaker on and off. The plastic operating arm for the switch has broken (inside the jack). The only way to fix it is to replace the headphone jack. You can find instructions for doing that at https://www.qsl.net/wy3a/Replace_K2_Headphone_Jack.htm The headphone jack is Elecraft p/n E620028. Either call sales at 831-763-4211 to order and pay for it or email parts at elecraft.com to obtain the price and order on-line using the Quick Order form. 73, Don W3FPR On 1/9/2019 1:58 PM, David Wilcox via Elecraft wrote: > I have a K2 built by another ham and am getting used to it.? I I recently discovered that when I plug my headphones into the headphone jack on the front the speaker still is active as before.? The only way I can disable the speaker is to insert another plug into the speaker jack on the back. Is this the way this radio is supposed to operate or is there a wiring error somewhere?? I have looked through the K2 manual and find nothing about the headphone jack except that it is for plugging in the headphones. > Thank you. > Dave K8WPE > > | | Virus-free. www.avg.com | > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com > From doug at kj0f.com Wed Jan 9 14:41:45 2019 From: doug at kj0f.com (Doug Person) Date: Wed, 9 Jan 2019 12:41:45 -0700 Subject: [Elecraft] Small items for sale In-Reply-To: References: Message-ID: I have 2? remaining items I would like to sell:? (please respond off-list if interested) N-GEN WIDEBAND NOISE GENERATOR -- BUILT ---- $35 Shipped 1st class USPS XG-1 SIGNAL GENERATOR -- built -- $35 Shipped 1st Class USPS Thanks -- Doug -- KJ0F doug (at) kj0f.com Just for reference - this is what the XG-1 is: Description: The XG1 is a crystal-controlled signal generator with very accurate 1 microvolt and 50 microvolt output levels. The output frequency is 7040 kHz. The unit can be used to determine the actual sensitivity and receive gain of any HF receiver that covers the 40-meter band. The 50-microvolt output can be used for S-meter calibration. The output levels are accurate to better than +/- 2 dB (typically +/- 1 dB). This makes the XG1 a low-cost alternative to expensive lab-grade signal generators when comparing the performance of various receivers. From bjorn at ekelund.nu Wed Jan 9 15:48:17 2019 From: bjorn at ekelund.nu (=?UTF-8?Q?Bj=C3=B6rn_Ekelund?=) Date: Wed, 9 Jan 2019 21:48:17 +0100 Subject: [Elecraft] Incorrect REF CAL procedure in the KX2 manual? Message-ID: The other day I got myself a GPS-disciplined frequency reference and started going through my rigs, calibrating them one by one. When I came to my KX2 I quickly found that the reference frequency oscillator calibration procedure, as described in the manual, does not work. (To be really sure, I even downloaded the latest version from Elecraft's web.) What is not mentioned in the manual is that it is necessary to activate APF (to get the 1Hz VFO resolution) or the auto-spot part of the procedure will go astray and you will end up worse off than before. Also, even with APF enabled, REF CAL is only 7 digits, not 8 as stated in the manual. Although not an error per se, I found that since the radio's auto-spot has a small hysteresis (a 2-3 Hz with high resolution tuning) you can do much better by adjusting REF CAL manually, simply turning the VFO knob. With such manual adjustment I was able to adjust my KX2 to an impressive accuracy of 0.04ppm (which of course may not hold over all temperatures and supply voltages.) Have I missed something or have others made the same observations? Or is it just another case of documentation not keeping up with firmware updates? 73, Bj?rn SM7IUN From frantz at pwpconsult.com Wed Jan 9 16:42:14 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Wed, 9 Jan 2019 13:42:14 -0800 Subject: [Elecraft] KAT3A & KIO3B Upgrade for my K3 In-Reply-To: Message-ID: On 1/9/19 at 8:05 AM, joseph.durnal at gmail.com (Joseph M. Durnal) wrote: >I think my only regret will be that I'll still need my separate FSK >interface, yeah yeah, AFSK, but if Elecraft didn't want us to use FSK, they >wouldn't have put it in the radio. When I RTTY contest, I use a program that uses the CAT interface over USB to send and receive RTTY. That way I have no extra cables and am using the K3's RTTY encode/decode. I use RUMlogNG on a Mac. I don't know of any software for other platforms, but I assume it exists. 73 Bill AE6JV -------------------------------------------------------------- Bill Frantz | There are now so many exceptions to the 408-356-8506 | Fourth Amendment that it operates only by www.pwpconsult.com | accident. - William Hugh Murray From doug at kj0f.com Wed Jan 9 16:49:02 2019 From: doug at kj0f.com (Doug Person) Date: Wed, 9 Jan 2019 14:49:02 -0700 Subject: [Elecraft] FOR SALE: Minty Clean MH3 Microphone Message-ID: Still more from the storage room: Essentially brand-new MH3 microphone for the KX-line. $50 Shipped 1st Class USPS CONUS PayPal works best. (PayPal address dxvictor at gmail.com) Please respond off-list. -- 73 de Doug -- KJ0F From jrichards at k8jhr.com Wed Jan 9 18:03:15 2019 From: jrichards at k8jhr.com (Richards) Date: Wed, 9 Jan 2019 18:03:15 -0500 Subject: [Elecraft] Sorta OT - assistive technology assistance needed Message-ID: Good Day. Background: I am assisting a blind ham who also suffers some hearing loss.? I suggested using headphones to attenuate ambient environmental noise as he operates.? The rub is, he needs to hear both his receiver AND his computer (which provides audible feedback when logging contacts and performing other duties.) Question: Can anyone suggest a simple passive (or active) mixer circuit schema I can build for him to safely mix audio signals from his transceiver headphone jack with audio signals from his computer sound card headphone jack? Discussion: While there are multiple commercially produced simple and complex mixing products in the marketplace, I would prefer to build an inexpensive, small footprint solution we can easily incorporate in his station to minimize clutter and the number of cables, jacks, and controls -- he contends with plenty of that already.?? I suppose one solution might be a simple Y-adapter cable, but that seems too easy and I wonder whether we should isolate the signals and/or grounds in some way?? (e.g., I do not wish to cause any "Pin-1" grounding issues, and etc.) Any traction??? Can anyone point me to an appropriate circuit schematic or other resource?? I don 't mind doing homework, and while I enjoy building stuff and I am familiar with the basic concepts involved,? I could use a leg up on this project, especially to keep it simple and easy to build and implement. Please reply off list if this question is too far off topic, although I suspect there are many hams who might be interested in the result, besides similarly situated disabled operators. Thank you -? James - K8JHR - --------------------------------------- From wunder at wunderwood.org Wed Jan 9 18:14:24 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Wed, 9 Jan 2019 15:14:24 -0800 Subject: [Elecraft] Sorta OT - assistive technology assistance needed In-Reply-To: References: Message-ID: <40B70AD5-1B0D-470B-8AB2-5329D1B8BE47@wunderwood.org> There are simple mixers that are probably cheaper than the parts you would need to build one. The Behringer MX400 is a four-channel mono mixer for $25. https://www.amazon.com/Behringer-Micromix-MX400-Low-Noise-4-Channel/dp/B000KGYAYQ The Rolls MX51S is a four-channel stereo mixer for $55. https://www.amazon.com/Rolls-MX51S-Four-Channel-Stereo-Mixer/dp/B0002BG2S6/ The Rolls MX42 is a passive (no amps) four-channel stereo mixer for $49. https://www.amazon.com/Rolls-MX42-Stereo-Mini-Mixer/dp/B00102ZN40/ Pyle also makes some simple, inexpensive mixers. Check that the box has the connectors you need. You might end up spending as much on connectors as on the mixer! wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 9, 2019, at 3:03 PM, Richards wrote: > > Good Day. > > Background: > > I am assisting a blind ham who also suffers some hearing loss. I suggested using headphones to attenuate ambient environmental noise as he operates. The rub is, he needs to hear both his receiver AND his computer (which provides audible feedback when logging contacts and performing other duties.) > > Question: > > Can anyone suggest a simple passive (or active) mixer circuit schema I can build for him to safely mix audio signals from his transceiver headphone jack with audio signals from his computer sound card headphone jack? > > Discussion: > > While there are multiple commercially produced simple and complex mixing products in the marketplace, I would prefer to build an inexpensive, small footprint solution we can easily incorporate in his station to minimize clutter and the number of cables, jacks, and controls -- he contends with plenty of that already. I suppose one solution might be a simple Y-adapter cable, but that seems too easy and I wonder whether we should isolate the signals and/or grounds in some way? (e.g., I do not wish to cause any "Pin-1" grounding issues, and etc.) > > Any traction? Can anyone point me to an appropriate circuit schematic or other resource? I don 't mind doing homework, and while I enjoy building stuff and I am familiar with the basic concepts involved, I could use a leg up on this project, especially to keep it simple and easy to build and implement. Please reply off list if this question is too far off topic, although I suspect there are many hams who might be interested in the result, besides similarly situated disabled operators. > > Thank you - James - K8JHR - > --------------------------------------- > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From k9yeq at live.com Wed Jan 9 18:15:49 2019 From: k9yeq at live.com (Bill Johnson) Date: Wed, 9 Jan 2019 23:15:49 +0000 Subject: [Elecraft] Sorta OT - assistive technology assistance needed In-Reply-To: References: Message-ID: Feed the receiver audio into the Computer and use it to mix the signals. 73, Bill K9YEQ https://wrj-tech.com/ -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Richards Sent: Wednesday, January 9, 2019 5:03 PM To: Elecraft at mailman.qth.net Subject: [Elecraft] Sorta OT - assistive technology assistance needed Good Day. Background: I am assisting a blind ham who also suffers some hearing loss.? I suggested using headphones to attenuate ambient environmental noise as he operates.? The rub is, he needs to hear both his receiver AND his computer (which provides audible feedback when logging contacts and performing other duties.) Question: Can anyone suggest a simple passive (or active) mixer circuit schema I can build for him to safely mix audio signals from his transceiver headphone jack with audio signals from his computer sound card headphone jack? Discussion: While there are multiple commercially produced simple and complex mixing products in the marketplace, I would prefer to build an inexpensive, small footprint solution we can easily incorporate in his station to minimize clutter and the number of cables, jacks, and controls -- he contends with plenty of that already.?? I suppose one solution might be a simple Y-adapter cable, but that seems too easy and I wonder whether we should isolate the signals and/or grounds in some way?? (e.g., I do not wish to cause any "Pin-1" grounding issues, and etc.) Any traction??? Can anyone point me to an appropriate circuit schematic or other resource?? I don 't mind doing homework, and while I enjoy building stuff and I am familiar with the basic concepts involved,? I could use a leg up on this project, especially to keep it simple and easy to build and implement. Please reply off list if this question is too far off topic, although I suspect there are many hams who might be interested in the result, besides similarly situated disabled operators. Thank you -? James - K8JHR - --------------------------------------- ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com From a.durbin at msn.com Wed Jan 9 18:18:51 2019 From: a.durbin at msn.com (Andy Durbin) Date: Wed, 9 Jan 2019 23:18:51 +0000 Subject: [Elecraft] Sorta OT - assistive technology assistance needed Message-ID: "Any traction??? Can anyone point me to an appropriate circuit schematic or other resource??" You don't mention what rig is being used. Many modern rigs provide a USB port for use with a PC. This USB port typically provides an audio as well as a CAT interface. With such a rig, mixing PC sounds with rig audio requires setting the rig CODEC audio properties to "listen to this device" and adjusting the audio balance with the volume mixer. The only hardware required is one USB A/B cable. If you do this - Please don't allow the rig's audio CODEC to be the PC's default sound playback device! Andy, k3wyc From W2xj at w2xj.net Wed Jan 9 18:22:04 2019 From: W2xj at w2xj.net (W2xj) Date: Wed, 9 Jan 2019 18:22:04 -0500 Subject: [Elecraft] Sorta OT - assistive technology assistance needed In-Reply-To: References: Message-ID: <4633C4C3-A970-426C-B995-7A178E997E18@w2xj.net> Without knowing more details I think levels are the biggest problem. Otherwise a simple passive mixer comprised of a few resistors would suffice. Sent from my iPad > On Jan 9, 2019, at 6:03 PM, Richards wrote: > > Good Day. > > Background: > > I am assisting a blind ham who also suffers some hearing loss. I suggested using headphones to attenuate ambient environmental noise as he operates. The rub is, he needs to hear both his receiver AND his computer (which provides audible feedback when logging contacts and performing other duties.) > > Question: > > Can anyone suggest a simple passive (or active) mixer circuit schema I can build for him to safely mix audio signals from his transceiver headphone jack with audio signals from his computer sound card headphone jack? > > Discussion: > > While there are multiple commercially produced simple and complex mixing products in the marketplace, I would prefer to build an inexpensive, small footprint solution we can easily incorporate in his station to minimize clutter and the number of cables, jacks, and controls -- he contends with plenty of that already. I suppose one solution might be a simple Y-adapter cable, but that seems too easy and I wonder whether we should isolate the signals and/or grounds in some way? (e.g., I do not wish to cause any "Pin-1" grounding issues, and etc.) > > Any traction? Can anyone point me to an appropriate circuit schematic or other resource? I don 't mind doing homework, and while I enjoy building stuff and I am familiar with the basic concepts involved, I could use a leg up on this project, especially to keep it simple and easy to build and implement. Please reply off list if this question is too far off topic, although I suspect there are many hams who might be interested in the result, besides similarly situated disabled operators. > > Thank you - James - K8JHR - > --------------------------------------- > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w2xj at w2xj.net From donwilh at embarqmail.com Wed Jan 9 18:29:54 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 9 Jan 2019 18:29:54 -0500 Subject: [Elecraft] Sorta OT - assistive technology assistance needed In-Reply-To: References: Message-ID: James, There was a homebrew headphone mixer in the ARRL Handbook sometime back - simple, with op-amps to isolate the sources. However with the advent of 2 to 5 input mixers being available in the $20 to $60 range (see Amazon), it seems foolish to consider building your own - drilling the enclosure for the potentiometers and jacks, building the board, mounting things, etc. will take more time and effort than is reasonable unless you really like doing those things - and it will likely cost more than buying one already built. The nice thing about a mixer is that you have control over the level of each input as well as an overall output volume control. 73, Don W3FPR On 1/9/2019 6:03 PM, Richards wrote: > Good Day. > > Background: > > I am assisting a blind ham who also suffers some hearing loss.? I > suggested using headphones to attenuate ambient environmental noise as > he operates.? The rub is, he needs to hear both his receiver AND his > computer (which provides audible feedback when logging contacts and > performing other duties.) > > Question: > > Can anyone suggest a simple passive (or active) mixer circuit schema I > can build for him to safely mix audio signals from his transceiver > headphone jack with audio signals from his computer sound card headphone > jack? > > Discussion: > > While there are multiple commercially produced simple and complex mixing > products in the marketplace, I would prefer to build an inexpensive, > small footprint solution we can easily incorporate in his station to > minimize clutter and the number of cables, jacks, and controls -- he > contends with plenty of that already.?? I suppose one solution might be > a simple Y-adapter cable, but that seems too easy and I wonder whether > we should isolate the signals and/or grounds in some way?? (e.g., I do > not wish to cause any "Pin-1" grounding issues, and etc.) > > Any traction??? Can anyone point me to an appropriate circuit schematic > or other resource?? I don 't mind doing homework, and while I enjoy > building stuff and I am familiar with the basic concepts involved,? I > could use a leg up on this project, especially to keep it simple and > easy to build and implement. Please reply off list if this question is > too far off topic, although I suspect there are many hams who might be > interested in the result, besides similarly situated disabled operators. > > Thank you -? James - K8JHR - > --------------------------------------- > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com From gordon.lapoint at gmail.com Wed Jan 9 18:47:43 2019 From: gordon.lapoint at gmail.com (Gordon LaPoint) Date: Wed, 9 Jan 2019 18:47:43 -0500 Subject: [Elecraft] KAT3A & KIO3B Upgrade for my K3 In-Reply-To: References: Message-ID: <7ac88401-83ce-ece1-5aa1-6e59fa378d62@gmail.com> Using the CAT interface this way is great.? BUT you loose some decoding ability.? I run a K3 in RTTY contests, TX is FSK RX is 3 decoders, the K3 built in, mmtty and 2tone.? usually 2tone beats the other 2, with mmtty sometimes winning.? The K3 decoder misses the most.? You might want to try the audio from the USB codec to the computer and use some software.? I forget the good one for the Mac, but I sure some Mac user will know. Gordon - N1MGO On 1/9/2019 16:42 PM, Bill Frantz wrote: > On 1/9/19 at 8:05 AM, joseph.durnal at gmail.com (Joseph M. Durnal) wrote: > >> I think my only regret will be that I'll still need my separate FSK >> interface, yeah yeah, AFSK, but if Elecraft didn't want us to use >> FSK, they >> wouldn't have put it in the radio. > > When I RTTY contest, I use a program that uses the CAT interface over > USB to send and receive RTTY. That way I have no extra cables and am > using the K3's RTTY encode/decode. I use RUMlogNG on a Mac. I don't > know of any software for other platforms, but I assume it exists. > > 73 Bill AE6JV > > -------------------------------------------------------------- > Bill Frantz??????? | There are now so many exceptions to the > 408-356-8506?????? | Fourth Amendment that it operates only by > www.pwpconsult.com | accident.? -? William Hugh Murray > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to gordon.lapoint at gmail.com From frantz at pwpconsult.com Wed Jan 9 19:01:10 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Wed, 9 Jan 2019 16:01:10 -0800 Subject: [Elecraft] KAT3A & KIO3B Upgrade for my K3 In-Reply-To: <7ac88401-83ce-ece1-5aa1-6e59fa378d62@gmail.com> Message-ID: A very good idea Gordon. I do that with cocoaModem, which allows me to decode the second receiver as well, allowing Single Operator Two Receiver contesting. fldigi is also a possibility. I'm currently in the process of trying to find a place for a third monitor in my shack so I can have enough screen real estate to display all of all the windows. 73 Bill AE6JV On 1/9/19 at 3:47 PM, gordon.lapoint at gmail.com (Gordon LaPoint) wrote: >Using the CAT interface this way is great.? BUT you loose some >decoding ability.? I run a K3 in RTTY contests, TX is FSK RX >is 3 decoders, the K3 built in, mmtty and 2tone.? usually >2tone beats the other 2, with mmtty sometimes winning.? The K3 >decoder misses the most.? You might want to try the audio from >the USB codec to the computer and use some software.? I forget >the good one for the Mac, but I sure some Mac user will know. ------------------------------------------------------------------------ Bill Frantz |"Insofar as the propositions of mathematics refer to 408-356-8506 | reality, they are not certain; and insofar they are www.pwpconsult.com | certain, they do not refer to reality.? -- Einstein From k2zf50 at aol.com Wed Jan 9 20:05:24 2019 From: k2zf50 at aol.com (k2zf50 at aol.com) Date: Thu, 10 Jan 2019 01:05:24 +0000 (UTC) Subject: [Elecraft] K3 fault 6 References: <948176854.9125727.1547082324611.ref@mail.yahoo.com> Message-ID: <948176854.9125727.1547082324611@mail.yahoo.com> My K3 has developed a problem and fault 6 is displayed on the front panel.Anyone have information on fault 6. I contacted Elecraft support and have not heard back from them. Thanks, Jim K2ZF From dave.w0zf at gmail.com Wed Jan 9 20:42:41 2019 From: dave.w0zf at gmail.com (Dave Fugleberg) Date: Wed, 9 Jan 2019 19:42:41 -0600 Subject: [Elecraft] Sorta OT - assistive technology assistance needed In-Reply-To: References: Message-ID: I usually like to build stuff when I can, but I have to agree with the others who suggested a commercial mixer. They are cheap and work well. I recently bought a small behringer USB mixer for under 50 bucks for a project at work. It acts as a USB sound card, so you can mix audio to or from the PC with other sources. You can adjust levels, equalization, and position (left/right) for each source. I doubt one could homebrew an equivalent unit any cheaper. Good luck with your project! I?m sure your friend will appreciate it. On Wed, Jan 9, 2019 at 5:30 PM Don Wilhelm wrote: > James, > > There was a homebrew headphone mixer in the ARRL Handbook sometime back > - simple, with op-amps to isolate the sources. > > However with the advent of 2 to 5 input mixers being available in the > $20 to $60 range (see Amazon), it seems foolish to consider building > your own - drilling the enclosure for the potentiometers and jacks, > building the board, mounting things, etc. will take more time and effort > than is reasonable unless you really like doing those things - and it > will likely cost more than buying one already built. > > The nice thing about a mixer is that you have control over the level of > each input as well as an overall output volume control. > > 73, > Don W3FPR > > On 1/9/2019 6:03 PM, Richards wrote: > > Good Day. > > > > Background: > > > > I am assisting a blind ham who also suffers some hearing loss. I > > suggested using headphones to attenuate ambient environmental noise as > > he operates. The rub is, he needs to hear both his receiver AND his > > computer (which provides audible feedback when logging contacts and > > performing other duties.) > > > > Question: > > > > Can anyone suggest a simple passive (or active) mixer circuit schema I > > can build for him to safely mix audio signals from his transceiver > > headphone jack with audio signals from his computer sound card headphone > > jack? > > > > Discussion: > > > > While there are multiple commercially produced simple and complex mixing > > products in the marketplace, I would prefer to build an inexpensive, > > small footprint solution we can easily incorporate in his station to > > minimize clutter and the number of cables, jacks, and controls -- he > > contends with plenty of that already. I suppose one solution might be > > a simple Y-adapter cable, but that seems too easy and I wonder whether > > we should isolate the signals and/or grounds in some way? (e.g., I do > > not wish to cause any "Pin-1" grounding issues, and etc.) > > > > Any traction? Can anyone point me to an appropriate circuit schematic > > or other resource? I don 't mind doing homework, and while I enjoy > > building stuff and I am familiar with the basic concepts involved, I > > could use a leg up on this project, especially to keep it simple and > > easy to build and implement. Please reply off list if this question is > > too far off topic, although I suspect there are many hams who might be > > interested in the result, besides similarly situated disabled operators. > > > > Thank you - James - K8JHR - > > --------------------------------------- > > > > > > > > > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to donwilh at embarqmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to dave.w0zf at gmail.com From Gary at ka1j.com Wed Jan 9 21:26:17 2019 From: Gary at ka1j.com (Gary Smith) Date: Wed, 09 Jan 2019 21:26:17 -0500 Subject: [Elecraft] Sorta OT - assistive technology assistance needed In-Reply-To: References: Message-ID: <5C36AD49.14462.146565B@Gary.ka1j.com> Not the answer you are asking for but still maybe a valuable idea for your friend. My mother was totally deaf and my father wanted to teach her code. What he did was disassemble & repurpose a speaker and made an arrangement that attached to her forearm, this connected to the audio output. The coil moved with the CW in the audio, that pressed against her skin and she was able to tactile sense the CW really well. Maybe this will help you or someone else. 73, Gary KA1J > Good Day. > > Background: > > I am assisting a blind ham who also suffers some hearing loss.? I > suggested using headphones to attenuate ambient environmental noise as > he operates.? The rub is, he needs to hear both his receiver AND his > computer (which provides audible feedback when logging contacts and > performing other duties.) > > Question: > > Can anyone suggest a simple passive (or active) mixer circuit schema I > can build for him to safely mix audio signals from his transceiver > headphone jack with audio signals from his computer sound card > headphone jack? > > Discussion: > > While there are multiple commercially produced simple and complex > mixing products in the marketplace, I would prefer to build an > inexpensive, small footprint solution we can easily incorporate in his > station to minimize clutter and the number of cables, jacks, and > controls -- he contends with plenty of that already.?? I suppose one > solution might be a simple Y-adapter cable, but that seems too easy > and I wonder whether we should isolate the signals and/or grounds in > some way?? (e.g., I do not wish to cause any "Pin-1" grounding > issues, and etc.) > > Any traction??? Can anyone point me to an appropriate circuit > schematic or other resource?? I don 't mind doing homework, and while > I enjoy building stuff and I am familiar with the basic concepts > involved,? I could use a leg up on this project, especially to keep > it simple and easy to build and implement. Please reply off list if > this question is too far off topic, although I suspect there are many > hams who might be interested in the result, besides similarly situated > disabled operators. > > Thank you -? James - K8JHR - > --------------------------------------- > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to gary at ka1j.com From W2xj at w2xj.net Wed Jan 9 21:26:42 2019 From: W2xj at w2xj.net (W2xj) Date: Wed, 9 Jan 2019 21:26:42 -0500 Subject: [Elecraft] Sorta OT - assistive technology assistance needed In-Reply-To: References: Message-ID: <2D9F41E4-B1F2-4E72-9E61-D44FCDDB4C71@w2xj.net> if the levels were close, 6 resistors costing pennies would do the job. No case or machining necessary. Sent from my iPad > On Jan 9, 2019, at 8:42 PM, Dave Fugleberg wrote: > > I usually like to build stuff when I can, but I have to agree with the > others who suggested a commercial mixer. They are cheap and work well. > I recently bought a small behringer USB mixer for under 50 bucks for a > project at work. It acts as a USB sound card, so you can mix audio to or > from the PC with other sources. You can adjust levels, equalization, and > position (left/right) for each source. > I doubt one could homebrew an equivalent unit any cheaper. > Good luck with your project! I?m sure your friend will appreciate it. > >> On Wed, Jan 9, 2019 at 5:30 PM Don Wilhelm wrote: >> >> James, >> >> There was a homebrew headphone mixer in the ARRL Handbook sometime back >> - simple, with op-amps to isolate the sources. >> >> However with the advent of 2 to 5 input mixers being available in the >> $20 to $60 range (see Amazon), it seems foolish to consider building >> your own - drilling the enclosure for the potentiometers and jacks, >> building the board, mounting things, etc. will take more time and effort >> than is reasonable unless you really like doing those things - and it >> will likely cost more than buying one already built. >> >> The nice thing about a mixer is that you have control over the level of >> each input as well as an overall output volume control. >> >> 73, >> Don W3FPR >> >>> On 1/9/2019 6:03 PM, Richards wrote: >>> Good Day. >>> >>> Background: >>> >>> I am assisting a blind ham who also suffers some hearing loss. I >>> suggested using headphones to attenuate ambient environmental noise as >>> he operates. The rub is, he needs to hear both his receiver AND his >>> computer (which provides audible feedback when logging contacts and >>> performing other duties.) >>> >>> Question: >>> >>> Can anyone suggest a simple passive (or active) mixer circuit schema I >>> can build for him to safely mix audio signals from his transceiver >>> headphone jack with audio signals from his computer sound card headphone >>> jack? >>> >>> Discussion: >>> >>> While there are multiple commercially produced simple and complex mixing >>> products in the marketplace, I would prefer to build an inexpensive, >>> small footprint solution we can easily incorporate in his station to >>> minimize clutter and the number of cables, jacks, and controls - From numbnutz33 at verizon.net Wed Jan 9 22:18:49 2019 From: numbnutz33 at verizon.net (Steve Forst) Date: Wed, 9 Jan 2019 22:18:49 -0500 Subject: [Elecraft] Sorta OT - assistive technology assistance Message-ID: <5b9953fb-3787-5edc-b7af-ad837997d6f5@verizon.net> As a blind guy, I use the MX400 mixer to put radio audio and screen reader audio from the pc into my headphones. Works perfect for me. 73, Steve KW3A From wunder at wunderwood.org Wed Jan 9 23:58:34 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Wed, 9 Jan 2019 20:58:34 -0800 Subject: [Elecraft] Sorta OT - assistive technology assistance needed In-Reply-To: References: Message-ID: <8BE2BF99-3ECC-4C97-9E46-832462AA35EB@wunderwood.org> Funny, I just realized I was misreading ?OT? as Occupational Therapy. Our son just finished OT grad school and is studying for the board. Of course, assistive tech is a big part of occupational therapy. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 9, 2019, at 5:42 PM, Dave Fugleberg wrote: > > I usually like to build stuff when I can, but I have to agree with the > others who suggested a commercial mixer. They are cheap and work well. > I recently bought a small behringer USB mixer for under 50 bucks for a > project at work. It acts as a USB sound card, so you can mix audio to or > from the PC with other sources. You can adjust levels, equalization, and > position (left/right) for each source. > I doubt one could homebrew an equivalent unit any cheaper. > Good luck with your project! I?m sure your friend will appreciate it. > > On Wed, Jan 9, 2019 at 5:30 PM Don Wilhelm wrote: > >> James, >> >> There was a homebrew headphone mixer in the ARRL Handbook sometime back >> - simple, with op-amps to isolate the sources. >> >> However with the advent of 2 to 5 input mixers being available in the >> $20 to $60 range (see Amazon), it seems foolish to consider building >> your own - drilling the enclosure for the potentiometers and jacks, >> building the board, mounting things, etc. will take more time and effort >> than is reasonable unless you really like doing those things - and it >> will likely cost more than buying one already built. >> >> The nice thing about a mixer is that you have control over the level of >> each input as well as an overall output volume control. >> >> 73, >> Don W3FPR >> >> On 1/9/2019 6:03 PM, Richards wrote: >>> Good Day. >>> >>> Background: >>> >>> I am assisting a blind ham who also suffers some hearing loss. I >>> suggested using headphones to attenuate ambient environmental noise as >>> he operates. The rub is, he needs to hear both his receiver AND his >>> computer (which provides audible feedback when logging contacts and >>> performing other duties.) >>> >>> Question: >>> >>> Can anyone suggest a simple passive (or active) mixer circuit schema I >>> can build for him to safely mix audio signals from his transceiver >>> headphone jack with audio signals from his computer sound card headphone >>> jack? >>> >>> Discussion: >>> >>> While there are multiple commercially produced simple and complex mixing >>> products in the marketplace, I would prefer to build an inexpensive, >>> small footprint solution we can easily incorporate in his station to >>> minimize clutter and the number of cables, jacks, and controls -- he >>> contends with plenty of that already. I suppose one solution might be >>> a simple Y-adapter cable, but that seems too easy and I wonder whether >>> we should isolate the signals and/or grounds in some way? (e.g., I do >>> not wish to cause any "Pin-1" grounding issues, and etc.) >>> >>> Any traction? Can anyone point me to an appropriate circuit schematic >>> or other resource? I don 't mind doing homework, and while I enjoy >>> building stuff and I am familiar with the basic concepts involved, I >>> could use a leg up on this project, especially to keep it simple and >>> easy to build and implement. Please reply off list if this question is >>> too far off topic, although I suspect there are many hams who might be >>> interested in the result, besides similarly situated disabled operators. >>> >>> Thank you - James - K8JHR - >>> --------------------------------------- >>> >>> >>> >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to donwilh at embarqmail.com >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to dave.w0zf at gmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From royord at gmail.com Thu Jan 10 00:24:49 2019 From: royord at gmail.com (Kevin F.) Date: Wed, 9 Jan 2019 22:24:49 -0700 (MST) Subject: [Elecraft] KX3 RX I/Q testing In-Reply-To: <1546745709079-0.post@n2.nabble.com> References: <1546745709079-0.post@n2.nabble.com> Message-ID: <1547097889570-0.post@n2.nabble.com> I did check that the RX I/Q was enabled and still hear nothing, on my computer, when plugged in to the RX I/Q port. I'm ordering a set of adapters so that I can put my headphones on the radio directly to see what I hear then. Thanks all for trying to help... I still wonder if I should hear anything with the RX I/Q enabled or not, it would be great if someone could answer that question. -- Sent from: http://elecraft.365791.n2.nabble.com/ From wunder at wunderwood.org Thu Jan 10 00:36:22 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Wed, 9 Jan 2019 21:36:22 -0800 Subject: [Elecraft] KX3 RX I/Q testing In-Reply-To: <1547097889570-0.post@n2.nabble.com> References: <1546745709079-0.post@n2.nabble.com> <1547097889570-0.post@n2.nabble.com> Message-ID: <4D35639D-76C4-4E46-AA93-A23593815FAA@wunderwood.org> Do you still want to use this for fldigi? It is the wrong output for that. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 9, 2019, at 9:24 PM, Kevin F. wrote: > > I did check that the RX I/Q was enabled and still hear nothing, on my > computer, when plugged in to the RX I/Q port. I'm ordering a set of adapters > so that I can put my headphones on the radio directly to see what I hear > then. Thanks all for trying to help... > > I still wonder if I should hear anything with the RX I/Q enabled or not, it > would be great if someone could answer that question. > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From la9nea at gmail.com Thu Jan 10 03:06:17 2019 From: la9nea at gmail.com (Viggo Magnus Nilsen Nilsen) Date: Thu, 10 Jan 2019 08:06:17 +0000 Subject: [Elecraft] KPA 500 Message-ID: Hello Elecrafters,, Have any of you an KPA 500 for sale ? If KIT (never build) also of interest. 73' Viggo LA9NEA From jpc-radio at outlook.com Thu Jan 10 05:43:18 2019 From: jpc-radio at outlook.com (J Chester) Date: Thu, 10 Jan 2019 10:43:18 +0000 Subject: [Elecraft] KX3, QRP, /P, 80m, daylight Message-ID: I am planning to try this - the reason will become clear later. I want to use the KX3 in portable QRP operations on 80m, most probably during daylight hours. Please, don?t tell me about the inefficiencies of short verticals on the low bands, or the propagation issues on 80m during daylight. These I understand. But I have a project in mind?.. My question is to ask if anyone on the list has ever tried this, and with what results? If any! Thank you 73 de Joe M1MWD From pincon at erols.com Thu Jan 10 07:43:46 2019 From: pincon at erols.com (Charlie T) Date: Thu, 10 Jan 2019 07:43:46 -0500 Subject: [Elecraft] Sorta OT - assistive technology assistance needed In-Reply-To: <8BE2BF99-3ECC-4C97-9E46-832462AA35EB@wunderwood.org> References: <8BE2BF99-3ECC-4C97-9E46-832462AA35EB@wunderwood.org> Message-ID: <000801d4a8e2$245236b0$6cf6a410$@erols.com> Hmmm, and here I thought it meant "Old Timer", since that really relates to me. Of course, "Off Topic "does too Chas -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Walter Underwood Sent: Wednesday, January 09, 2019 11:59 PM To: Elecraft at mailman.qth.net Subject: Re: [Elecraft] Sorta OT - assistive technology assistance needed Funny, I just realized I was misreading ?OT? as Occupational Therapy. Our son just finished OT grad school and is studying for the board. Of course, assistive tech is a big part of occupational therapy. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 9, 2019, at 5:42 PM, Dave Fugleberg wrote: > > I usually like to build stuff when I can, but I have to agree with the > others who suggested a commercial mixer. They are cheap and work well. > I recently bought a small behringer USB mixer for under 50 bucks for a > project at work. It acts as a USB sound card, so you can mix audio to > or from the PC with other sources. You can adjust levels, > equalization, and position (left/right) for each source. > I doubt one could homebrew an equivalent unit any cheaper. > Good luck with your project! I?m sure your friend will appreciate it. > > On Wed, Jan 9, 2019 at 5:30 PM Don Wilhelm wrote: > >> James, >> >> There was a homebrew headphone mixer in the ARRL Handbook sometime >> back >> - simple, with op-amps to isolate the sources. >> >> However with the advent of 2 to 5 input mixers being available in the >> $20 to $60 range (see Amazon), it seems foolish to consider building >> your own - drilling the enclosure for the potentiometers and jacks, >> building the board, mounting things, etc. will take more time and >> effort than is reasonable unless you really like doing those things - >> and it will likely cost more than buying one already built. >> >> The nice thing about a mixer is that you have control over the level >> of each input as well as an overall output volume control. >> >> 73, >> Don W3FPR >> >> On 1/9/2019 6:03 PM, Richards wrote: >>> Good Day. >>> >>> Background: >>> >>> I am assisting a blind ham who also suffers some hearing loss. I >>> suggested using headphones to attenuate ambient environmental noise >>> as he operates. The rub is, he needs to hear both his receiver AND >>> his computer (which provides audible feedback when logging contacts >>> and performing other duties.) >>> >>> Question: >>> >>> Can anyone suggest a simple passive (or active) mixer circuit schema >>> I can build for him to safely mix audio signals from his transceiver >>> headphone jack with audio signals from his computer sound card >>> headphone jack? >>> >>> Discussion: >>> >>> While there are multiple commercially produced simple and complex >>> mixing products in the marketplace, I would prefer to build an >>> inexpensive, small footprint solution we can easily incorporate in >>> his station to minimize clutter and the number of cables, jacks, and controls -- he >>> contends with plenty of that already. I suppose one solution might be >>> a simple Y-adapter cable, but that seems too easy and I wonder >>> whether we should isolate the signals and/or grounds in some way? >>> (e.g., I do not wish to cause any "Pin-1" grounding issues, and >>> etc.) >>> >>> Any traction? Can anyone point me to an appropriate circuit schematic >>> or other resource? I don 't mind doing homework, and while I enjoy >>> building stuff and I am familiar with the basic concepts involved, >>> I could use a leg up on this project, especially to keep it simple >>> and easy to build and implement. Please reply off list if this >>> question is too far off topic, although I suspect there are many >>> hams who might be interested in the result, besides similarly situated disabled operators. >>> >>> Thank you - James - K8JHR - >>> --------------------------------------- >>> >>> >>> >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net Please help support this >>> email list: http://www.qsl.net/donate.html Message delivered to >>> donwilh at embarqmail.com >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net Please help support this >> email list: http://www.qsl.net/donate.html Message delivered to >> dave.w0zf at gmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to > wunder at wunderwood.org ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to pincon at erols.com From joseph.durnal at gmail.com Thu Jan 10 09:37:12 2019 From: joseph.durnal at gmail.com (Joseph M. Durnal) Date: Thu, 10 Jan 2019 09:37:12 -0500 Subject: [Elecraft] KAT3A & KIO3B Upgrade for my K3 In-Reply-To: References: Message-ID: I don't think there is a lot of software that supports sending the FSK with CAT commands. Does anyone know of any others? J On Wed, Jan 9, 2019 at 4:42 PM Bill Frantz wrote: > On 1/9/19 at 8:05 AM, joseph.durnal at gmail.com (Joseph M. Durnal) wrote: > > >I think my only regret will be that I'll still need my separate FSK > >interface, yeah yeah, AFSK, but if Elecraft didn't want us to use FSK, > they > >wouldn't have put it in the radio. > > When I RTTY contest, I use a program that uses the CAT interface > over USB to send and receive RTTY. That way I have no extra > cables and am using the K3's RTTY encode/decode. I use RUMlogNG > on a Mac. I don't know of any software for other platforms, but > I assume it exists. > > 73 Bill AE6JV > > -------------------------------------------------------------- > Bill Frantz | There are now so many exceptions to the > 408-356-8506 | Fourth Amendment that it operates only by > www.pwpconsult.com | accident. - William Hugh Murray > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to joseph.durnal at gmail.com > From eaopa at comcast.net Thu Jan 10 11:06:02 2019 From: eaopa at comcast.net (Gene O) Date: Thu, 10 Jan 2019 11:06:02 -0500 Subject: [Elecraft] K2 - (K2-100) Message-ID: I have a RS232 cable which I made for another project. I plan to change one of the DB9 connectors to a male version.? In essence it will end up being the cable that is shown in Figure 41 of the K2/100 manual, page 55. My computer has a? RS232 port and the female end of this cable will go directly to this port. The male end shell will have to be notched since the socket at the rear of the K2 has a bump/tab which prevents someone from plugging in a wrong cable.? I am almost positive this mod was designed by N0SS but I can not seem to find where I saw it. Gene, W2BXR From donwilh at embarqmail.com Thu Jan 10 11:11:34 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Thu, 10 Jan 2019 11:11:34 -0500 Subject: [Elecraft] K2 - (K2-100) In-Reply-To: References: Message-ID: <2cec4da2-778e-3512-3d84-c9201655d37f@embarqmail.com> Gene, I also thought Tom N0SS originated that mod, but I did not find it on his website (preserved by the Mid-Missouri Amateur Radio Club). 73, Don W3FPR On 1/10/2019 11:06 AM, Gene O wrote: > I have a RS232 cable which I made for another project. I plan to change > one of the DB9 connectors to a male version.? In essence it will end up > being the cable that is shown in Figure 41 of the K2/100 manual, page 55. > > My computer has a? RS232 port and the female end of this cable will go > directly to this port. > > The male end shell will have to be notched since the socket at the rear > of the K2 has a bump/tab which prevents someone from plugging in a wrong > cable.? I am almost positive this mod was designed by N0SS but I can not > seem to find where I saw it. From kwroberson at yahoo.com Thu Jan 10 11:31:06 2019 From: kwroberson at yahoo.com (Ken Roberson) Date: Thu, 10 Jan 2019 16:31:06 +0000 (UTC) Subject: [Elecraft] KX3, QRP, /P, 80m, daylight In-Reply-To: References: Message-ID: <1515750577.17698129.1547137866137@mail.yahoo.com> Joe, Testing propagation on 80M in the daytime is a good project. Often I test propagation on 630M in the daytime with a shortvertical. A ? T ? antenna would be good for your test, if you can get enoughtop loading you Would not need a base loading coil. I ran 630M WSPR beacon last night , and was heard by manystations in EU. 73 Ken K5DNL www.k5dnl.com On Thursday, January 10, 2019, 4:44:19 AM CST, J Chester wrote: I am planning to try this - the reason will become clear later. I want to use the KX3 in portable QRP operations on 80m, most probably during daylight hours. Please, don?t tell me about the inefficiencies of short verticals on the low bands, or the propagation issues on 80m during daylight. These I understand. But I have a project in mind?.. My question is to ask if anyone on the list has ever tried this, and with what results? If any! Thank you 73 de Joe M1MWD ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to kwroberson at yahoo.com From mpridesti at yahoo.com Thu Jan 10 13:08:52 2019 From: mpridesti at yahoo.com (Mpridesti) Date: Thu, 10 Jan 2019 13:08:52 -0500 Subject: [Elecraft] ERR TXF Message-ID: Strange issue I setup the K3 for diversity RX Now I can not transmit CW. I get an ERR TXF indication. What needs to be changed to correct? Regards, Mark Pride 603-231-8965 From k2vco.vic at gmail.com Thu Jan 10 13:49:30 2019 From: k2vco.vic at gmail.com (Victor Rosenthal 4X6GP) Date: Thu, 10 Jan 2019 20:49:30 +0200 Subject: [Elecraft] ERR TXF In-Reply-To: References: Message-ID: This error is caused by selecting a filter other than the 2.8 or 2.7 kHz filter as the transmit filter. Use CONFIG:FLTX to select that filter for CW/DATA/SSB. (Except if you have FM (13 kHz) or AM filters (6 kHz) you must select those filters in the FM and AM modes). 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 10 Jan 2019 20:08, Mpridesti via Elecraft wrote: > Strange issue > > I setup the K3 for diversity RX > > Now I can not transmit CW. I get an ERR TXF > indication. What needs to be changed to correct? > > > Regards, > Mark Pride > 603-231-8965 > From mpridesti at yahoo.com Thu Jan 10 13:53:25 2019 From: mpridesti at yahoo.com (Mpridesti) Date: Thu, 10 Jan 2019 13:53:25 -0500 Subject: [Elecraft] ERR TXF In-Reply-To: References: Message-ID: <5C919C42-D3E9-49A9-A11F-C54AF3EFCACC@yahoo.com> Thanks for the excellent guidance Regards, Mark, K1RX > On Jan 10, 2019, at 1:49 PM, Victor Rosenthal 4X6GP wrote: > > This error is caused by selecting a filter other than the 2.8 or 2.7 kHz filter as the transmit filter. Use CONFIG:FLTX to select that filter for CW/DATA/SSB. (Except if you have FM (13 kHz) or AM filters (6 kHz) you must select those filters in the FM and AM modes). > > 73, > Victor, 4X6GP > Rehovot, Israel > Formerly K2VCO > CWops no. 5 > http://www.qsl.net/k2vco/ >> On 10 Jan 2019 20:08, Mpridesti via Elecraft wrote: >> Strange issue >> I setup the K3 for diversity RX >> Now I can not transmit CW. I get an ERR TXF >> indication. What needs to be changed to correct? >> Regards, >> Mark Pride >> 603-231-8965 From mpridesti at yahoo.com Thu Jan 10 14:04:35 2019 From: mpridesti at yahoo.com (Mpridesti) Date: Thu, 10 Jan 2019 14:04:35 -0500 Subject: [Elecraft] ERR TXF In-Reply-To: References: Message-ID: Ok understand except how do you select AM and have it stay? Went to the CONFIG menu and selected FLTX (it shows CW in al FL numbers) Tried to select a different mode I.e. AM but it does not stay AM Regards, Mark, K1RX > On Jan 10, 2019, at 1:49 PM, Victor Rosenthal 4X6GP wrote: > > This error is caused by selecting a filter other than the 2.8 or 2.7 kHz filter as the transmit filter. Use CONFIG:FLTX to select that filter for CW/DATA/SSB. (Except if you have FM (13 kHz) or AM filters (6 kHz) you must select those filters in the FM and AM modes). > > 73, > Victor, 4X6GP > Rehovot, Israel > Formerly K2VCO > CWops no. 5 > http://www.qsl.net/k2vco/ >> On 10 Jan 2019 20:08, Mpridesti via Elecraft wrote: >> Strange issue >> I setup the K3 for diversity RX >> Now I can not transmit CW. I get an ERR TXF >> indication. What needs to be changed to correct? >> Regards, >> Mark Pride >> 603-231-8965 From w6png at yahoo.com Thu Jan 10 14:42:10 2019 From: w6png at yahoo.com (Paul Gacek) Date: Thu, 10 Jan 2019 19:42:10 +0000 Subject: [Elecraft] SO2R home-brew controller project for portable duel KX3/PX3 contest station Message-ID: Following on from my Elecraft KRC2 post, here is a little writeup and snaps of an ultra small SO2R controller I built for my evolving duel KX3/PX3 portable contest station. If interested read on at.... https://w6png.wordpress.com/2019/01/09/suitcase-dxpedition-station-automation-part-2-an-arduino-based-so2r-controller/ Paul W6PNG/M0SNA From donwilh at embarqmail.com Thu Jan 10 15:28:48 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Thu, 10 Jan 2019 15:28:48 -0500 Subject: [Elecraft] ERR TXF In-Reply-To: References: Message-ID: <1225f489-bdde-4065-f45b-a1881624351a@embarqmail.com> Mark, It is easy to set up the filter enables for each mode - for both transmit and receive using the K3 Utility Configure Filters selection. Save the filter configuration to the K3 and operate. Much easier than trying to set them for each mode in the menu. 73, Don W3FPR On 1/10/2019 2:04 PM, Mpridesti via Elecraft wrote: > Ok understand except how do you select AM and have it stay? > > Went to the CONFIG menu and selected FLTX (it shows CW in al FL numbers) Tried to select a different mode I.e. AM but it does not stay AM > From k2vco.vic at gmail.com Thu Jan 10 15:50:02 2019 From: k2vco.vic at gmail.com (Vic Rosenthal) Date: Thu, 10 Jan 2019 22:50:02 +0200 Subject: [Elecraft] ERR TXF In-Reply-To: References: Message-ID: Select AM mode and then go to CONFIG:FLTX. Or (better) use the he configuration tab of the K3 utility, as Don suggested. Victor 4X6GP > On 10 Jan 2019, at 21:04, Mpridesti wrote: > > Ok understand except how do you select AM and have it stay? > > Went to the CONFIG menu and selected FLTX (it shows CW in al FL numbers) Tried to select a different mode I.e. AM but it does not stay AM > > Regards, > Mark, K1RX > > >> On Jan 10, 2019, at 1:49 PM, Victor Rosenthal 4X6GP wrote: >> >> This error is caused by selecting a filter other than the 2.8 or 2.7 kHz filter as the transmit filter. Use CONFIG:FLTX to select that filter for CW/DATA/SSB. (Except if you have FM (13 kHz) or AM filters (6 kHz) you must select those filters in the FM and AM modes). >> >> 73, >> Victor, 4X6GP >> Rehovot, Israel >> Formerly K2VCO >> CWops no. 5 >> http://www.qsl.net/k2vco/ >>> On 10 Jan 2019 20:08, Mpridesti via Elecraft wrote: >>> Strange issue >>> I setup the K3 for diversity RX >>> Now I can not transmit CW. I get an ERR TXF >>> indication. What needs to be changed to correct? >>> Regards, >>> Mark Pride >>> 603-231-8965 > From mpridesti at yahoo.com Thu Jan 10 17:35:42 2019 From: mpridesti at yahoo.com (Mpridesti) Date: Thu, 10 Jan 2019 17:35:42 -0500 Subject: [Elecraft] ERR TXF In-Reply-To: References: Message-ID: Thanks Vic Guess I need to spend some quality time in the filter configuration portion of the manual. Did manage to get the BW set so I use CW again but need to really setup the filters by BW. Thanks all! Regards, Mark, K1RX > On Jan 10, 2019, at 3:50 PM, Vic Rosenthal wrote: > > Select AM mode and then go to CONFIG:FLTX. > Or (better) use the he configuration tab of the K3 utility, as Don suggested. > > Victor 4X6GP > >> On 10 Jan 2019, at 21:04, Mpridesti wrote: >> >> Ok understand except how do you select AM and have it stay? >> >> Went to the CONFIG menu and selected FLTX (it shows CW in al FL numbers) Tried to select a different mode I.e. AM but it does not stay AM >> >> Regards, >> Mark, K1RX >> >> >>> On Jan 10, 2019, at 1:49 PM, Victor Rosenthal 4X6GP wrote: >>> >>> This error is caused by selecting a filter other than the 2.8 or 2.7 kHz filter as the transmit filter. Use CONFIG:FLTX to select that filter for CW/DATA/SSB. (Except if you have FM (13 kHz) or AM filters (6 kHz) you must select those filters in the FM and AM modes). >>> >>> 73, >>> Victor, 4X6GP >>> Rehovot, Israel >>> Formerly K2VCO >>> CWops no. 5 >>> http://www.qsl.net/k2vco/ >>>> On 10 Jan 2019 20:08, Mpridesti via Elecraft wrote: >>>> Strange issue >>>> I setup the K3 for diversity RX >>>> Now I can not transmit CW. I get an ERR TXF >>>> indication. What needs to be changed to correct? >>>> Regards, >>>> Mark Pride >>>> 603-231-8965 >> From donwilh at embarqmail.com Thu Jan 10 17:45:42 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Thu, 10 Jan 2019 17:45:42 -0500 Subject: [Elecraft] ERR TXF In-Reply-To: References: Message-ID: Mark, Use K3 Utility, it is quick and easy. Only enable one filter for for transmit on each mode. You can enable multiple filters for receive on each mode. K3 Utility makes it quick and easy - just check off the applicable boxes and save to the K3/K3S. 73, Don W3FPR On 1/10/2019 5:35 PM, Mpridesti via Elecraft wrote: > Thanks Vic > > Guess I need to spend some quality time in the filter configuration portion of the manual. Did manage to get the BW set so I use CW again but need to really setup the filters by BW. > > Thanks all! > > Regards, > Mark, K1RX > > >> On Jan 10, 2019, at 3:50 PM, Vic Rosenthal wrote: >> >> Select AM mode and then go to CONFIG:FLTX. >> Or (better) use the he configuration tab of the K3 utility, as Don suggested. >> >> Victor 4X6GP >> >>> On 10 Jan 2019, at 21:04, Mpridesti wrote: >>> >>> Ok understand except how do you select AM and have it stay? >>> >>> Went to the CONFIG menu and selected FLTX (it shows CW in al FL numbers) Tried to select a different mode I.e. AM but it does not stay AM >>> >>> Regards, >>> Mark, K1RX >>> >>> >>>> On Jan 10, 2019, at 1:49 PM, Victor Rosenthal 4X6GP wrote: >>>> >>>> This error is caused by selecting a filter other than the 2.8 or 2.7 kHz filter as the transmit filter. Use CONFIG:FLTX to select that filter for CW/DATA/SSB. (Except if you have FM (13 kHz) or AM filters (6 kHz) you must select those filters in the FM and AM modes). >>>> >>>> 73, >>>> Victor, 4X6GP >>>> Rehovot, Israel >>>> Formerly K2VCO >>>> CWops no. 5 >>>> http://www.qsl.net/k2vco/ >>>>> On 10 Jan 2019 20:08, Mpridesti via Elecraft wrote: >>>>> Strange issue >>>>> I setup the K3 for diversity RX >>>>> Now I can not transmit CW. I get an ERR TXF >>>>> indication. What needs to be changed to correct? >>>>> Regards, >>>>> Mark Pride >>>>> 603-231-8965 >>> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com > From donwilh at embarqmail.com Thu Jan 10 17:47:24 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Thu, 10 Jan 2019 17:47:24 -0500 Subject: [Elecraft] ERR TXF In-Reply-To: References: Message-ID: I forgot to say that most modes will use the 2.7/2.8 kHz for transmit. The exceptions are AM and FM. 73, Don W3FPR On 1/10/2019 5:35 PM, Mpridesti via Elecraft wrote: > Thanks Vic > > Guess I need to spend some quality time in the filter configuration portion of the manual. Did manage to get the BW set so I use CW again but need to really setup the filters by BW. > > Thanks all! > > Regards, > Mark, K1RX > > >> On Jan 10, 2019, at 3:50 PM, Vic Rosenthal wrote: >> >> Select AM mode and then go to CONFIG:FLTX. >> Or (better) use the he configuration tab of the K3 utility, as Don suggested. >> >> Victor 4X6GP >> >>> On 10 Jan 2019, at 21:04, Mpridesti wrote: >>> >>> Ok understand except how do you select AM and have it stay? >>> >>> Went to the CONFIG menu and selected FLTX (it shows CW in al FL numbers) Tried to select a different mode I.e. AM but it does not stay AM >>> >>> Regards, >>> Mark, K1RX >>> >>> >>>> On Jan 10, 2019, at 1:49 PM, Victor Rosenthal 4X6GP wrote: >>>> >>>> This error is caused by selecting a filter other than the 2.8 or 2.7 kHz filter as the transmit filter. Use CONFIG:FLTX to select that filter for CW/DATA/SSB. (Except if you have FM (13 kHz) or AM filters (6 kHz) you must select those filters in the FM and AM modes). >>>> >>>> 73, >>>> Victor, 4X6GP >>>> Rehovot, Israel >>>> Formerly K2VCO >>>> CWops no. 5 >>>> http://www.qsl.net/k2vco/ >>>>> On 10 Jan 2019 20:08, Mpridesti via Elecraft wrote: >>>>> Strange issue >>>>> I setup the K3 for diversity RX >>>>> Now I can not transmit CW. I get an ERR TXF >>>>> indication. What needs to be changed to correct? >>>>> Regards, >>>>> Mark Pride >>>>> 603-231-8965 >>> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com > From jasimmons at pinewooddata.com Thu Jan 10 17:52:43 2019 From: jasimmons at pinewooddata.com (John Simmons) Date: Thu, 10 Jan 2019 16:52:43 -0600 Subject: [Elecraft] ERR TXF In-Reply-To: References: Message-ID: Interesting to note that CW transmit requires the SSB filter not the CW filter. -John NI0K Don Wilhelm wrote on 1/10/2019 4:47 PM: > I forgot to say that most modes will use the 2.7/2.8 kHz for transmit. > The exceptions are AM and FM. > > 73, > Don W3FPR > > On 1/10/2019 5:35 PM, Mpridesti via Elecraft wrote: >> Thanks Vic >> >> Guess I need to spend some quality time in the filter configuration >> portion of the manual.? Did manage to get the BW set so I use CW >> again but need to really setup the filters by BW. >> >> Thanks all! >> >> Regards, >> Mark, K1RX >> >> >>> On Jan 10, 2019, at 3:50 PM, Vic Rosenthal wrote: >>> >>> Select AM mode and then go to CONFIG:FLTX. >>> Or (better) use the he configuration tab of the K3 utility, as Don >>> suggested. >>> >>> Victor 4X6GP >>> >>>> On 10 Jan 2019, at 21:04, Mpridesti wrote: >>>> >>>> Ok understand except how do you select AM and have it stay? >>>> >>>> Went to the CONFIG menu and selected FLTX (it shows CW in al FL >>>> numbers)? Tried to select a different mode I.e. AM but it does not >>>> stay AM >>>> >>>> Regards, >>>> Mark, K1RX >>>> >>>> >>>>> On Jan 10, 2019, at 1:49 PM, Victor Rosenthal 4X6GP >>>>> wrote: >>>>> >>>>> This error is caused by selecting a filter other than the 2.8 or >>>>> 2.7 kHz filter as the transmit filter. Use CONFIG:FLTX to select >>>>> that filter for CW/DATA/SSB. (Except if you have FM (13 kHz) or AM >>>>> filters (6 kHz) you must select those filters in the FM and AM >>>>> modes). >>>>> >>>>> 73, >>>>> Victor, 4X6GP >>>>> Rehovot, Israel >>>>> Formerly K2VCO >>>>> CWops no. 5 >>>>> http://www.qsl.net/k2vco/ >>>>>> On 10 Jan 2019 20:08, Mpridesti via Elecraft wrote: >>>>>> Strange issue >>>>>> I setup the K3 for diversity RX >>>>>> Now I can not transmit CW. I get an ERR TXF >>>>>> indication. What needs to be changed to correct? >>>>>> Regards, >>>>>> Mark Pride >>>>>> 603-231-8965 >>>> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donwilh at embarqmail.com >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jasimmons at pinewooddata.com From nr4c at widomaker.com Thu Jan 10 17:57:30 2019 From: nr4c at widomaker.com (Nr4c) Date: Thu, 10 Jan 2019 17:57:30 -0500 Subject: [Elecraft] KAT3A & KIO3B Upgrade for my K3 In-Reply-To: References: Message-ID: <03AF36A1-3B12-4FB3-900F-C59A7A3C3192@widomaker.com> None that I know of. FSK is not normally a CAT control nor is it done with ?handshake? signals on standard serial port. It is passed on the TX line of a RS-232 serial connection to a discrete pin on a radio for FSK signaling. My K3 has such a pin on the Acc2 connector on the rear of the radio. My IC806MkIIg also hat an FSK pin on the 13 pin DIN connector. Other rigs are similar. AFSK today is not what it used to be. Manufacturers have developed better TX and RX filters and I don?t really think you can tell the difference. Sent from my iPhone ...nr4c. bill > On Jan 10, 2019, at 9:37 AM, Joseph M. Durnal wrote: > > I don't think there is a lot of software that supports sending the FSK with > CAT commands. Does anyone know of any others? > > J > >> On Wed, Jan 9, 2019 at 4:42 PM Bill Frantz wrote: >> >>> On 1/9/19 at 8:05 AM, joseph.durnal at gmail.com (Joseph M. Durnal) wrote: >>> >>> I think my only regret will be that I'll still need my separate FSK >>> interface, yeah yeah, AFSK, but if Elecraft didn't want us to use FSK, >> they >>> wouldn't have put it in the radio. >> >> When I RTTY contest, I use a program that uses the CAT interface >> over USB to send and receive RTTY. That way I have no extra >> cables and am using the K3's RTTY encode/decode. I use RUMlogNG >> on a Mac. I don't know of any software for other platforms, but >> I assume it exists. >> >> 73 Bill AE6JV >> >> -------------------------------------------------------------- >> Bill Frantz | There are now so many exceptions to the >> 408-356-8506 | Fourth Amendment that it operates only by >> www.pwpconsult.com | accident. - William Hugh Murray >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to joseph.durnal at gmail.com >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From nr4c at widomaker.com Thu Jan 10 18:00:45 2019 From: nr4c at widomaker.com (Nr4c) Date: Thu, 10 Jan 2019 18:00:45 -0500 Subject: [Elecraft] ERR TXF In-Reply-To: References: Message-ID: <4E78F183-4254-41BB-BEEE-58F44185CAE1@widomaker.com> For goodness sakes, give up on the CONFIG menu in the radio and use the utility. It?s so much easier and you can see all the filters at once. Sent from my iPhone ...nr4c. bill > On Jan 10, 2019, at 5:35 PM, Mpridesti via Elecraft wrote: > > Thanks Vic > > Guess I need to spend some quality time in the filter configuration portion of the manual. Did manage to get the BW set so I use CW again but need to really setup the filters by BW. > > Thanks all! > > Regards, > Mark, K1RX > > >> On Jan 10, 2019, at 3:50 PM, Vic Rosenthal wrote: >> >> Select AM mode and then go to CONFIG:FLTX. >> Or (better) use the he configuration tab of the K3 utility, as Don suggested. >> >> Victor 4X6GP >> >>> On 10 Jan 2019, at 21:04, Mpridesti wrote: >>> >>> Ok understand except how do you select AM and have it stay? >>> >>> Went to the CONFIG menu and selected FLTX (it shows CW in al FL numbers) Tried to select a different mode I.e. AM but it does not stay AM >>> >>> Regards, >>> Mark, K1RX >>> >>> >>>> On Jan 10, 2019, at 1:49 PM, Victor Rosenthal 4X6GP wrote: >>>> >>>> This error is caused by selecting a filter other than the 2.8 or 2.7 kHz filter as the transmit filter. Use CONFIG:FLTX to select that filter for CW/DATA/SSB. (Except if you have FM (13 kHz) or AM filters (6 kHz) you must select those filters in the FM and AM modes). >>>> >>>> 73, >>>> Victor, 4X6GP >>>> Rehovot, Israel >>>> Formerly K2VCO >>>> CWops no. 5 >>>> http://www.qsl.net/k2vco/ >>>>> On 10 Jan 2019 20:08, Mpridesti via Elecraft wrote: >>>>> Strange issue >>>>> I setup the K3 for diversity RX >>>>> Now I can not transmit CW. I get an ERR TXF >>>>> indication. What needs to be changed to correct? >>>>> Regards, >>>>> Mark Pride >>>>> 603-231-8965 >>> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From donwilh at embarqmail.com Thu Jan 10 18:02:01 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Thu, 10 Jan 2019 18:02:01 -0500 Subject: [Elecraft] ERR TXF In-Reply-To: References: Message-ID: John, No mystery - the stock K3/K3S includes the 2.7kHz filter or the 2.8kHz with the upgrade. So CW transmit has to work with that filter - the DSP does the rest. So if you select a CW width filter for CW transmit, you will get the ERR TXF message. 73, Don W3FPR On 1/10/2019 5:52 PM, John Simmons wrote: > Interesting to note that CW transmit requires the SSB filter not the CW > filter. > > -John NI0K > > Don Wilhelm wrote on 1/10/2019 4:47 PM: >> I forgot to say that most modes will use the 2.7/2.8 kHz for transmit. >> The exceptions are AM and FM. From rmcgraw at blomand.net Thu Jan 10 18:10:00 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Thu, 10 Jan 2019 17:10:00 -0600 Subject: [Elecraft] ERR TXF In-Reply-To: References: Message-ID: <34015DF8-1817-4916-AA4F-DED9E8623970@blomand.net> Normal for most radios due to carrier frequency and receiver offset for CW. Elecraft is not the only that does it this way. As filters with reduced bandwidth we find that group delay increases. With this CW wave shapes become a difficult task. Wider filters are much easier to generate good quality CW elements. Bob, K4TAX Sent from my iPhone > On Jan 10, 2019, at 4:52 PM, John Simmons wrote: > > Interesting to note that CW transmit requires the SSB filter not the CW filter. > > -John NI0K > > Don Wilhelm wrote on 1/10/2019 4:47 PM: >> I forgot to say that most modes will use the 2.7/2.8 kHz for transmit. The exceptions are AM and FM. >> >> 73, >> Don W3FPR >> >>> On 1/10/2019 5:35 PM, Mpridesti via Elecraft wrote: >>> Thanks Vic >>> >>> Guess I need to spend some quality time in the filter configuration portion of the manual. Did manage to get the BW set so I use CW again but need to really setup the filters by BW. >>> >>> Thanks all! >>> >>> Regards, >>> Mark, K1RX >>> >>> >>>> On Jan 10, 2019, at 3:50 PM, Vic Rosenthal wrote: >>>> >>>> Select AM mode and then go to CONFIG:FLTX. >>>> Or (better) use the he configuration tab of the K3 utility, as Don suggested. >>>> >>>> Victor 4X6GP >>>> >>>>> On 10 Jan 2019, at 21:04, Mpridesti wrote: >>>>> >>>>> Ok understand except how do you select AM and have it stay? >>>>> >>>>> Went to the CONFIG menu and selected FLTX (it shows CW in al FL numbers) Tried to select a different mode I.e. AM but it does not stay AM >>>>> >>>>> Regards, >>>>> Mark, K1RX >>>>> >>>>> >>>>>> On Jan 10, 2019, at 1:49 PM, Victor Rosenthal 4X6GP wrote: >>>>>> >>>>>> This error is caused by selecting a filter other than the 2.8 or 2.7 kHz filter as the transmit filter. Use CONFIG:FLTX to select that filter for CW/DATA/SSB. (Except if you have FM (13 kHz) or AM filters (6 kHz) you must select those filters in the FM and AM modes). >>>>>> >>>>>> 73, >>>>>> Victor, 4X6GP >>>>>> Rehovot, Israel >>>>>> Formerly K2VCO >>>>>> CWops no. 5 >>>>>> http://www.qsl.net/k2vco/ >>>>>>> On 10 Jan 2019 20:08, Mpridesti via Elecraft wrote: >>>>>>> Strange issue >>>>>>> I setup the K3 for diversity RX >>>>>>> Now I can not transmit CW. I get an ERR TXF >>>>>>> indication. What needs to be changed to correct? >>>>>>> Regards, >>>>>>> Mark Pride >>>>>>> 603-231-8965 >>>>> >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to donwilh at embarqmail.com >>> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to jasimmons at pinewooddata.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From rmcgraw at blomand.net Thu Jan 10 18:30:20 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Thu, 10 Jan 2019 17:30:20 -0600 Subject: [Elecraft] KAT3A & KIO3B Upgrade for my K3 In-Reply-To: <03AF36A1-3B12-4FB3-900F-C59A7A3C3192@widomaker.com> References: <03AF36A1-3B12-4FB3-900F-C59A7A3C3192@widomaker.com> Message-ID: <42C13E0F-4AE6-414E-8649-14DCF995EADA@blomand.net> I've attempted to configure MMTTY to run FSK with my K3S. Conclusion is that a Terminal unit will be required. Using AFSK is easy and I don't find any disadvantages. No additional hardware required. Bob, K4TAX Sent from my iPhone > On Jan 10, 2019, at 4:57 PM, Nr4c wrote: > > None that I know of. FSK is not normally a CAT control nor is it done with ?handshake? signals on standard serial port. It is passed on the TX line of a RS-232 serial connection to a discrete pin on a radio for FSK signaling. My K3 has such a pin on the Acc2 connector on the rear of the radio. My IC806MkIIg also hat an FSK pin on the 13 pin DIN connector. Other rigs are similar. > > AFSK today is not what it used to be. Manufacturers have developed better TX and RX filters and I don?t really think you can tell the difference. > > Sent from my iPhone > ...nr4c. bill > > >> On Jan 10, 2019, at 9:37 AM, Joseph M. Durnal wrote: >> >> I don't think there is a lot of software that supports sending the FSK with >> CAT commands. Does anyone know of any others? >> >> J >> >>>> On Wed, Jan 9, 2019 at 4:42 PM Bill Frantz wrote: >>>> >>>> On 1/9/19 at 8:05 AM, joseph.durnal at gmail.com (Joseph M. Durnal) wrote: >>>> >>>> I think my only regret will be that I'll still need my separate FSK >>>> interface, yeah yeah, AFSK, but if Elecraft didn't want us to use FSK, >>> they >>>> wouldn't have put it in the radio. >>> >>> When I RTTY contest, I use a program that uses the CAT interface >>> over USB to send and receive RTTY. That way I have no extra >>> cables and am using the K3's RTTY encode/decode. I use RUMlogNG >>> on a Mac. I don't know of any software for other platforms, but >>> I assume it exists. >>> >>> 73 Bill AE6JV >>> >>> -------------------------------------------------------------- >>> Bill Frantz | There are now so many exceptions to the >>> 408-356-8506 | Fourth Amendment that it operates only by >>> www.pwpconsult.com | accident. - William Hugh Murray >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to joseph.durnal at gmail.com >>> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to nr4c at widomaker.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From donwilh at embarqmail.com Thu Jan 10 18:40:29 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Thu, 10 Jan 2019 18:40:29 -0500 Subject: [Elecraft] KAT3A & KIO3B Upgrade for my K3 In-Reply-To: References: Message-ID: There is no access to FSK-D using CAT commands other than those supplying ASCII strings. FSK-D can transmit using paddle (not straight key) input, ASCII text, the FSK pin on the ACC connector (with a one transistor keying interface) or from the Terminal screen of K3 Utility. I do not know of any software applications that support other than keying the FSK pin (except for K3 Utility). If you can deal with soundcards, AFSK-A is usually a better choice for RTTY. Many software applications support it. If you want to use FSK-D, you will have to suffer with the extra cables, and with the advent of the KIO3B interface, it is more difficult to use the RTS or DTR RS-232 signals from the computer. You might be able to pick those signal off the RS-232 dongle that comes with the KIO3B, and run it through the One Transistor keying interface to activate the ACC connector pin, but if you have the P3 connected with the K3S and using the P3YCBL, getting access to that RS-232 signal becomes more difficult. A standard RS-232 "Y" cable may make it possible. 73, Don W3FPR On 1/10/2019 9:37 AM, Joseph M. Durnal wrote: > I don't think there is a lot of software that supports sending the FSK with > CAT commands. Does anyone know of any others? > From doug at kj0f.com Thu Jan 10 19:32:02 2019 From: doug at kj0f.com (Doug Person) Date: Thu, 10 Jan 2019 17:32:02 -0700 Subject: [Elecraft] FOR SALE: MH2, MH3, XG3 Message-ID: <2d937926-7689-183f-4424-078dd878dee0@kj0f.com> All items in mint, clean condition and include shipping USPS First Class: MH2 Microphone for K2, K3, K3s -- $50.00 MH3 Microphone for KX2, KX3 -- $50.00 XG3? RF Signal Source -- $175.00?? (Includes, serial cable, 2M Flexible Antenna [Think Fox Hunts] and non-resonant Telescoping whip) Please replay off-list -- Thanks for helping me fund a KX2 -- 73 de Doug -- KJ0F From ww3s at zoominternet.net Thu Jan 10 21:37:05 2019 From: ww3s at zoominternet.net (Jamie WW3S) Date: Thu, 10 Jan 2019 21:37:05 -0500 Subject: [Elecraft] whats a updated K3 called? Message-ID: <2F66C451F70E4730ACC0A686A6352573@ww3s> what do we call an original K3 with the new preamp and synthesizer boards in it? K3 1.5? only difference between it and a S model is the USB board..... From n6kr at elecraft.com Thu Jan 10 22:01:13 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Thu, 10 Jan 2019 19:01:13 -0800 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: <2F66C451F70E4730ACC0A686A6352573@ww3s> References: <2F66C451F70E4730ACC0A686A6352573@ww3s> Message-ID: ...and the AF amp improvements on the DSP board, and the new VFO display bezel, and the 5/10/15 dB attenuator on the RF board, and the lower noise mod on the RF board :) Wayne N6KR > On Jan 10, 2019, at 6:37 PM, Jamie WW3S wrote: > > what do we call an original K3 with the new preamp and synthesizer boards in it? K3 1.5? only difference between it and a S model is the USB board..... > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to n6kr at elecraft.com From hbjr at optilink.us Thu Jan 10 22:03:49 2019 From: hbjr at optilink.us (hbjr at optilink.us) Date: Thu, 10 Jan 2019 22:03:49 -0500 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: References: <2F66C451F70E4730ACC0A686A6352573@ww3s> Message-ID: <008001d4a95a$466cc030$d3464090$@optilink.us> :-D -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Wayne Burdick Sent: Thursday, January 10, 2019 10:01 PM To: Jamie WW3S Cc: Elecraft Reflector Subject: Re: [Elecraft] whats a updated K3 called? ...and the AF amp improvements on the DSP board, and the new VFO display bezel, and the 5/10/15 dB attenuator on the RF board, and the lower noise mod on the RF board :) Wayne N6KR > On Jan 10, 2019, at 6:37 PM, Jamie WW3S wrote: > > what do we call an original K3 with the new preamp and synthesizer boards in it? K3 1.5? only difference between it and a S model is the USB board..... > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to > n6kr at elecraft.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to hbjr at optilink.us From rwnewbould at comcast.net Thu Jan 10 22:17:27 2019 From: rwnewbould at comcast.net (Rich) Date: Thu, 10 Jan 2019 22:17:27 -0500 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: <2F66C451F70E4730ACC0A686A6352573@ww3s> References: <2F66C451F70E4730ACC0A686A6352573@ww3s> Message-ID: I kind of like K3s (lower case S) is modified K3 K3S (upper case S) is the new radio Rich K3RWN On 1/10/2019 21:37 PM, Jamie WW3S wrote: > what do we call an original K3 with the new preamp and synthesizer boards in it? K3 1.5? only difference between it and a S model is the USB board..... > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rwnewbould at comcast.net > From ab4iq at comcast.net Thu Jan 10 22:19:06 2019 From: ab4iq at comcast.net (AB4IQ) Date: Thu, 10 Jan 2019 21:19:06 -0600 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: References: <2F66C451F70E4730ACC0A686A6352573@ww3s> Message-ID: <011e01d4a95c$69b5bb30$3d213190$@comcast.net> I also added the KIO3B modification to my K3 (2197) in addition to the synthesizer, DVR and TXCO so it operates just like my K3S's. The only difference is on the Keypad 6 which says DUAL PB on the K3 and APF on the K3S that I can see. Ed.. AB4IQ -----Original Message----- From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Wayne Burdick Sent: Thursday, January 10, 2019 9:01 PM To: Jamie WW3S Cc: Elecraft Reflector Subject: Re: [Elecraft] whats a updated K3 called? ...and the AF amp improvements on the DSP board, and the new VFO display bezel, and the 5/10/15 dB attenuator on the RF board, and the lower noise mod on the RF board :) Wayne N6KR > On Jan 10, 2019, at 6:37 PM, Jamie WW3S wrote: > > what do we call an original K3 with the new preamp and synthesizer boards in it? K3 1.5? only difference between it and a S model is the USB board..... > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to > n6kr at elecraft.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ab4iq at comcast.net From n6kr at elecraft.com Thu Jan 10 22:20:34 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Thu, 10 Jan 2019 19:20:34 -0800 Subject: [Elecraft] New DSP features? Message-ID: <5149CB54-CB9B-4B0A-A4F7-C83B7ADE0F05@elecraft.com> Hi all, The K3/K3S and KX2/KX3 are SDRs, by definition, because they provide demodulation and modulation features via a DSP chip that is programmable. Our DSP algorithms already give the user all the usual features expected of an all-mode transceiver, and then some: - DVR - variable passband filtering & IF shift - audio peaking filter (APF, for CW) - auto-spotting and automatic tuning (CW, PSK) - dual watch (KX2/KX3) - audio effects - DTMF (KX3) - dual-passband filtering for RTTY - FM subaudible tones - data decode/encode in various modes - noise reduction - RX and TX EQ - synchronous AM (K3/K3S) - ESSB - transmit noise gating - speech compression - manual notch filtering - autonotch ...etc. That said, here's your chance to dream up *new* DSP features we haven't thought of. All suggestions will be debated by our engineering team, even those that appear radical or implausible at first glance. We'll keep this to ourselves, so don't worry about being judged for tossing out some wacky ideas. Let's cast a broad net. Please send all correspondence on this topic directly to yours truly. 73, Wayne N6KR From n6kr at elecraft.com Thu Jan 10 22:23:21 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Thu, 10 Jan 2019 19:23:21 -0800 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: References: <2F66C451F70E4730ACC0A686A6352573@ww3s> Message-ID: Sure. Or maybe the "real" K3S is "Son of K3," while the upgraded model is "Stepson of K3"? Back to my lab where I belong.... Wayne N6KR > On Jan 10, 2019, at 7:17 PM, Rich wrote: > > I kind of like > > K3s (lower case S) is modified K3 > > K3S (upper case S) is the new radio > > Rich > > K3RWN > > On 1/10/2019 21:37 PM, Jamie WW3S wrote: >> what do we call an original K3 with the new preamp and synthesizer boards in it? K3 1.5? only difference between it and a S model is the USB board..... >> ______________________ From huntinhmb at coastside.net Thu Jan 10 22:39:38 2019 From: huntinhmb at coastside.net (Brian Hunt) Date: Thu, 10 Jan 2019 19:39:38 -0800 Subject: [Elecraft] KAT3A & KIO3B Upgrade for my K3 In-Reply-To: References: Message-ID: I bet the KEY macro in N1MM+ would work. Purely speculation on my part since I haven't tried it but it works fine for CW. 73, Brian, K0DTJ From ed at w0yk.com Fri Jan 11 00:56:15 2019 From: ed at w0yk.com (Ed W0YK) Date: Thu, 10 Jan 2019 21:56:15 -0800 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: Message-ID: And the new rubber band on the knob. 73,Ed W0YK -------- Original message --------From: Wayne Burdick Date: 1/10/19 19:01 (GMT-08:00) To: Jamie WW3S Cc: Elecraft Reflector Subject: Re: [Elecraft] whats a updated K3 called? ...and the AF amp improvements on the DSP board, and the new VFO display bezel, and the 5/10/15 dB attenuator on the RF board, and the lower noise mod on the RF board :) Wayne N6KR > On Jan 10, 2019, at 6:37 PM, Jamie WW3S wrote: > > what do we call an original K3 with the new preamp and synthesizer boards in it? K3 1.5? only difference between it and a S model is the USB board..... > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to n6kr at elecraft.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ed at w0yk.com From norrislawfirm2 at gmail.com Fri Jan 11 01:13:39 2019 From: norrislawfirm2 at gmail.com (Eric Norris) Date: Thu, 10 Jan 2019 22:13:39 -0800 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: References: <2F66C451F70E4730ACC0A686A6352573@ww3s> Message-ID: I prefer neoK3S, like neoNoir, only brighter, depending on your LCD backlight setting 73 Eric WD6DBM On Thu, Jan 10, 2019, 7:17 PM Rich I kind of like > > K3s (lower case S) is modified K3 > > K3S (upper case S) is the new radio > > Rich > > K3RWN > > From jrichards at k8jhr.com Fri Jan 11 02:36:29 2019 From: jrichards at k8jhr.com (Richards) Date: Fri, 11 Jan 2019 02:36:29 -0500 Subject: [Elecraft] Sorta OT - assistive technology assistance Message-ID: THANK YOU for the several replies to my mixer circuit question - both on and off the list.? Unfortunately, few actually answered the original question,? most often advising me to abandon the project or mix on a computer sound card. First - Thanks, Steve, for your input based on personal experience.?? While I am familiar with your mixer, Tom prefers a device with stereo channels and outputs for both headphones and powered speakers. The model under consideration has only two control pots, making it easier to manage.?? Tom truly appreciates your personal input and direct correspondence off list.?? He puts a lot of stock in your take. Second - Tom prefers a simple hardware solution.?? Locating a manual control next to the rig is much easier (for him) to manage, than mixing with a computer sound card.?? Navigating multiple operating system windows is a serious challenge because he cannot see the monitor or use a mouse.? This is not the preferred method for a contest or snagging rare DX before a pileup ensues.? Mixing on a computer would be very inconvenient;? close your eyes and try it some day!?? It's easy for you to say ... but, not so easy for my friend to do. Third -? We can simply purchase a commercial product? (I recommend the Rolls MINImix MS22s stereo mixer, with just two pots, and outputs for both headphones and speakers) UNFORTUNATELY, THAT DEFEATS THE WHOLE POINT BEHIND MY QUESTION. While I do NOT wish to look a gift horse in the chops, or appear ungrateful for the advice received so far;? money is not the object as I want to LEARN how this type of circuit works, and do a favor for a friend, in one stroke. Advising me to save money and just buy a turn-key, off-the-shelf solution hardly fits the HAM RADIO TRADITION of experimentation and self-determination,? and teaches me nothing about circuit design.?? I was hoping to build something MYSELF- earning that heady sense of self-satisfaction that accompanies the completion of a successful home brew project.? Considering all the experts on this list, including world class board certified AES audio man Jim Brown, I figured a simple summing circuit would be a snap. I close this thread with a big THANK YOU on behalf of my? ... um ... "client,"? whilst I repair to the proverbial drawing board to renew my search for a simple summing circuit. Happy trails to all.?????? JR (We return you to your regular daily programming content)? ?? ;-) ----------------------------------------------------- From ldormiston at gmail.com Fri Jan 11 02:42:12 2019 From: ldormiston at gmail.com (Lee Ormiston) Date: Fri, 11 Jan 2019 00:42:12 -0700 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: References: <2F66C451F70E4730ACC0A686A6352573@ww3s> Message-ID: Or, singing A Capella while in laboratory! On Thu, Jan 10, 2019 at 11:15 PM Eric Norris wrote: > I prefer neoK3S, like neoNoir, only brighter, depending on your LCD > backlight setting > > 73 Eric WD6DBM > > On Thu, Jan 10, 2019, 7:17 PM Rich > > I kind of like > > > > K3s (lower case S) is modified K3 > > > > K3S (upper case S) is the new radio > > > > Rich > > > > K3RWN > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to ldormiston at gmail.com > From indians at xsmail.com Fri Jan 11 04:57:45 2019 From: indians at xsmail.com (Petr, OK1RP/M0SIS) Date: Fri, 11 Jan 2019 02:57:45 -0700 (MST) Subject: [Elecraft] whats a updated K3 called? In-Reply-To: References: <2F66C451F70E4730ACC0A686A6352573@ww3s> Message-ID: <1547200665016-0.post@n2.nabble.com> ...and one more think, the ATU bypass relay if I am right ;) ----- 73 - Petr, OK1RP "Apple & Elecraft freak" B:http://ok1rp.blogspot.com G+:http://goo.gl/w3u2s9 G+: http://goo.gl/gP99xq -- Sent from: http://elecraft.365791.n2.nabble.com/ From indians at xsmail.com Fri Jan 11 04:59:40 2019 From: indians at xsmail.com (Petr, OK1RP/M0SIS) Date: Fri, 11 Jan 2019 02:59:40 -0700 (MST) Subject: [Elecraft] whats a updated K3 called? In-Reply-To: References: <2F66C451F70E4730ACC0A686A6352573@ww3s> Message-ID: <1547200780104-0.post@n2.nabble.com> Brilliant Rich, I like it. ----- 73 - Petr, OK1RP "Apple & Elecraft freak" B:http://ok1rp.blogspot.com G+:http://goo.gl/w3u2s9 G+: http://goo.gl/gP99xq -- Sent from: http://elecraft.365791.n2.nabble.com/ From af9us at yahoo.com Fri Jan 11 06:33:55 2019 From: af9us at yahoo.com (Bernie Lavezza) Date: Fri, 11 Jan 2019 03:33:55 -0800 Subject: [Elecraft] whats a updated K3 called? Message-ID: What?s an updated K3 to be called? This is a no-brainer! You guys love to analyze ? even to the point of OT! Analyze this! (Love the movie!): My suggestion is: K3U. It is simple, bears nice resemblance to the manufacturer?s existing model naming scheme. As an interested but non-owner of Elecraft radios, any moniker that bears too close of a resemblance to the manufacturer?s conventions (K3s, for example) can be too easily confused as a typo mistake, leaving a potential buyer thinking K3S; and, also requiring a buyer to know the differences between the updated K3 and the K3S. I definitely appreciate all the differences itemized in this email thread, a ?compiled and authorized list? will go a long way in helping prospective buyers have the information needed at the time he or she is ready to purchase an updated K3. My suggestion-recommendation-vote is for K3U. Enjoying the Elecraft email group, Bernie, AF9US From john at kk9a.com Fri Jan 11 06:59:36 2019 From: john at kk9a.com (john at kk9a.com) Date: Fri, 11 Jan 2019 06:59:36 -0500 Subject: [Elecraft] whats a updated K3 called? Message-ID: <4f53d5fa444de71525595e37af53c9d0.squirrel@www11.qth.com> Bad idea. If I purchased a used K3s and received a modified K3 I would be most unhappy. John KK9A Rich k3RWN I kind of like K3s (lower case S) is modified K3 K3S (upper case S) is the new radio Rich K3RWN From hs0zed at gmail.com Fri Jan 11 07:27:09 2019 From: hs0zed at gmail.com (Martin Sole) Date: Fri, 11 Jan 2019 19:27:09 +0700 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: <4f53d5fa444de71525595e37af53c9d0.squirrel@www11.qth.com> References: <4f53d5fa444de71525595e37af53c9d0.squirrel@www11.qth.com> Message-ID: Guessing you would check the serial number first, rear panel AND menu. That would tell you straight off Sent from my iPhone > On 11 Jan 2019, at 18:59, "john at kk9a.com" wrote: > > Bad idea. If I purchased a used K3s and received a modified K3 I would be > most unhappy. > > John KK9A > > > > > Rich k3RWN > > I kind of like > > K3s (lower case S) is modified K3 > > K3S (upper case S) is the new radio > > Rich > > K3RWN > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to hs0zed at gmail.com From raysills3 at verizon.net Fri Jan 11 08:15:27 2019 From: raysills3 at verizon.net (Raymond Sills) Date: Fri, 11 Jan 2019 08:15:27 -0500 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: Message-ID: <1683d0d9804-850-39d@webjas-vac017.srv.aolmail.net> So..... let's call it a K3U... (U for upgrade)... so as to distinguish it from a K3S. 73 de Ray K2ULR KX3 #211 -----Original Message----- From: Wayne Burdick To: Jamie WW3S Cc: Elecraft Reflector Sent: Thu, Jan 10, 2019 10:44 pm Subject: Re: [Elecraft] whats a updated K3 called? ...and the AF amp improvements on the DSP board, and the new VFO display bezel, and the 5/10/15 dB attenuator on the RF board, and the lower noise mod on the RF board :) Wayne N6KR > On Jan 10, 2019, at 6:37 PM, Jamie WW3S wrote: > > what do we call an original K3 with the new preamp and synthesizer boards in it? K3 1.5? only difference between it and a S model is the USB board..... > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to n6kr at elecraft.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to raysills3 at verizon.net From rmcgraw at blomand.net Fri Jan 11 08:45:15 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Fri, 11 Jan 2019 07:45:15 -0600 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: <2F66C451F70E4730ACC0A686A6352573@ww3s> References: <2F66C451F70E4730ACC0A686A6352573@ww3s> Message-ID: I'd say it is called and "updated K3".?? The K3S is different and my understanding is that a K3 can not be updated to be a K3S. All abet similar, in the end, they are different radios.??? For that fact alone, the reason I purchased a K3S and not a K3 73 Bob, K4TAX From doug at kj0f.com Fri Jan 11 09:08:39 2019 From: doug at kj0f.com (Doug Person) Date: Fri, 11 Jan 2019 07:08:39 -0700 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: References: <2F66C451F70E4730ACC0A686A6352573@ww3s> Message-ID: K3+ as the TenTec folks had referred to the Omni 6 with upgrades. Doug -- KJ0F On 1/10/2019 8:23 PM, Wayne Burdick wrote: > Sure. Or maybe the "real" K3S is "Son of K3," while the upgraded model is "Stepson of K3"? > > Back to my lab where I belong.... > > Wayne > N6KR > > >> On Jan 10, 2019, at 7:17 PM, Rich wrote: >> >> I kind of like >> >> K3s (lower case S) is modified K3 >> >> K3S (upper case S) is the new radio >> >> Rich >> >> K3RWN >> >> On 1/10/2019 21:37 PM, Jamie WW3S wrote: >>> what do we call an original K3 with the new preamp and synthesizer boards in it? K3 1.5? only difference between it and a S model is the USB board..... >>> ______________________ > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to doug at kj0f.com > -- 73 de Doug -- KJ0F From rmcgraw at blomand.net Fri Jan 11 09:17:02 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Fri, 11 Jan 2019 08:17:02 -0600 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: References: <2F66C451F70E4730ACC0A686A6352573@ww3s> Message-ID: Clarification: The Tentec Omni VI Plus is not the same as the Tentec Omni VI, opt 3.? There is a difference, in model number and performance and features.? Thus from my take, a K3 upgrade is just that, a K3 that has the recommended factory upgrades installed. ?? And a K3S is a K3S that can only come from the factory.??? And in both cases, presumably a difference in value for resale purposes. 73 Bob, K4TAX On 1/11/2019 8:08 AM, Doug Person wrote: > K3+ as the TenTec folks had referred to the Omni 6 with upgrades. > > Doug -- KJ0F > From pincon at erols.com Fri Jan 11 09:24:27 2019 From: pincon at erols.com (Charlie T) Date: Fri, 11 Jan 2019 09:24:27 -0500 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: <1683d0d9804-850-39d@webjas-vac017.srv.aolmail.net> References: <1683d0d9804-850-39d@webjas-vac017.srv.aolmail.net> Message-ID: <001101d4a9b9$5f789950$1e69cbf0$@erols.com> It should be named "K3CharlieT". (After ME !) That way, when I get famous, your descendants can sell it as a valuable collectable artifact for lots of money, or whatever is used at that time for bartering. 73, Charlie k3ICH If you think this is a tad absurd, you're absolutely correct.....just as this thread has gotten. -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Raymond Sills Sent: Friday, January 11, 2019 8:15 AM To: elecraft at mailman.qth.net Subject: Re: [Elecraft] whats a updated K3 called? So..... let's call it a K3U... (U for upgrade)... so as to distinguish it from a K3S. From john at johnjeanantiqueradio.com Fri Jan 11 09:30:18 2019 From: john at johnjeanantiqueradio.com (John K9UWA) Date: Fri, 11 Jan 2019 09:30:18 -0500 Subject: [Elecraft] whats a updated K3 called? Message-ID: <5C38A87A.10674.323B7A@john.johnjeanantiqueradio.com> One would think that K3s represents multiple K3 radios. As in Plural of K3. I am sure that it causes some confusion to many who read the Elecraft reflector or other places where the radios are discussed. I do thank Wayne and Eric for a list that says. The new radio has the following differences to the K3 radio. As well as the portions of the K3 that can not be upgraded to equal the new K3S radio. John k9uwa John Goller, K9UWA & Jean Goller, N9PXF Antique Radio Restorations k9uwa at arrl.net Visit our Web Site at: http://www.JohnJeanAntiqueRadio.com 4836 Ranch Road Leo, IN 46765 USA 1-260-637-6426 From donwilh at embarqmail.com Fri Jan 11 09:31:33 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Fri, 11 Jan 2019 09:31:33 -0500 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: References: <2F66C451F70E4730ACC0A686A6352573@ww3s> Message-ID: <58f48285-bd92-0ce3-8303-b3e544eab0b9@embarqmail.com> All this is fun and good, but if you are selling it, it needs to be listed as a K3 SN xxxx with the specific upgrades enumerated - so the buyer knows what he is buying. I have run into this problem many, many times with the early K2s - they are listed as being upgraded, only to find out (for instance) that only the firmware has been changed while the A to B upgrades have not been installed. What upgraded means to one person does not equal the perception of another person. 73, Don W3FPR On 1/11/2019 9:08 AM, Doug Person wrote: > K3+ as the TenTec folks had referred to the Omni 6 with upgrades. > > Doug -- KJ0F > > On 1/10/2019 8:23 PM, Wayne Burdick wrote: >> Sure. Or maybe the "real" K3S is "Son of K3," while the upgraded model >> is "Stepson of K3"? >> >> Back to my lab where I belong.... >> >> Wayne >> N6KR >> >> >>> On Jan 10, 2019, at 7:17 PM, Rich wrote: >>> >>> I kind of like >>> >>> K3s (lower case S) is modified K3 >>> >>> K3S (upper case S) is the new radio >>> >>> Rich >>> >>> K3RWN >>> >>> On 1/10/2019 21:37 PM, Jamie WW3S wrote: >>>> what do we call an original K3 with the new preamp and synthesizer >>>> boards in it? K3 1.5? only difference between it and a S model is >>>> the USB board..... >>>> ______________________ >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to doug at kj0f.com >> From ghyoungman at gmail.com Fri Jan 11 09:38:26 2019 From: ghyoungman at gmail.com (Grant Youngman) Date: Fri, 11 Jan 2019 09:38:26 -0500 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: <58f48285-bd92-0ce3-8303-b3e544eab0b9@embarqmail.com> References: <2F66C451F70E4730ACC0A686A6352573@ww3s> <58f48285-bd92-0ce3-8303-b3e544eab0b9@embarqmail.com> Message-ID: <9C6246A2-4DDF-4D24-AFD5-1CF8F93F0D84@gmail.com> Couldn?t agree more. I?ll wager there is at least one early K3 out there with a new synthesizer board and none of the published K3 updates installed. Sure .. it?s ?upgraded?, but what is it? The whole ?I have a K3S and you have a mere K3? bit of puffery going around is just ? well ? puffery :-) Grant NQ5T K3 #2091 KX3 #8342 > On Jan 11, 2019, at 9:31 AM, Don Wilhelm wrote: > > All this is fun and good, but if you are selling it, it needs to be listed as a K3 SN xxxx with the specific upgrades enumerated - so the buyer knows what he is buying. > > I have run into this problem many, many times with the early K2s - they are listed as being upgraded, only to find out (for instance) that only the firmware has been changed while the A to B upgrades have not been installed. > What upgraded means to one person does not equal the perception of another person. > > 73, > Don W3FPR > From mike at rioux.org Fri Jan 11 09:40:42 2019 From: mike at rioux.org (Michael P. Rioux) Date: Fri, 11 Jan 2019 09:40:42 -0500 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: <001101d4a9b9$5f789950$1e69cbf0$@erols.com> References: <1683d0d9804-850-39d@webjas-vac017.srv.aolmail.net> <001101d4a9b9$5f789950$1e69cbf0$@erols.com> Message-ID: K3A Mike, W1USN Si vis pacem, para bellum mike at rioux.org > On Jan 11, 2019, at 9:24 AM, Charlie T wrote: > > It should be named "K3CharlieT". > (After ME !) > That way, when I get famous, your descendants can sell it as a valuable > collectable artifact for lots of money, or whatever is used at that time for > bartering. > > 73, Charlie k3ICH > > > If you think this is a tad absurd, you're absolutely correct.....just as > this thread has gotten. > > > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net On > Behalf Of Raymond Sills > Sent: Friday, January 11, 2019 8:15 AM > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] whats a updated K3 called? > > So..... let's call it a K3U... (U for upgrade)... so as to distinguish it > from a K3S. > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to mike at rioux.org > From rwnewbould at comcast.net Fri Jan 11 09:54:39 2019 From: rwnewbould at comcast.net (Rich) Date: Fri, 11 Jan 2019 09:54:39 -0500 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: <5C38A87A.10674.323B7A@john.johnjeanantiqueradio.com> References: <5C38A87A.10674.323B7A@john.johnjeanantiqueradio.com> Message-ID: <443f71b7-057d-32fe-3e52-84ace495db44@comcast.net> OK I thought this was just a fun thing, I did not know it was actually a serious thing. Frankly a K3 is a K3 and a K3S is a K3S.?? The difference in each radio can vary wildly based on what the owner has installed in the radio as far as options go.?? That is the bottom line.?? To me the K3S options that are available for the K3 are nothing more than additional options. As for making a used purchase, the SN is critical. Rich On 1/11/2019 9:30 AM, John K9UWA wrote: > One would think that K3s represents multiple K3 radios. As in Plural of K3. > > I am sure that it causes some confusion to many who read the Elecraft reflector or > other places where the radios are discussed. > > I do thank Wayne and Eric for a list that says. The new radio has the following > differences to the K3 radio. As well as the portions of the K3 that can not be > upgraded to equal the new K3S radio. > > John k9uwa > John Goller, K9UWA & Jean Goller, N9PXF > Antique Radio Restorations > k9uwa at arrl.net > Visit our Web Site at: > http://www.JohnJeanAntiqueRadio.com > 4836 Ranch Road > Leo, IN 46765 > USA > 1-260-637-6426 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rwnewbould at comcast.net > From mark3575 at icloud.com Fri Jan 11 10:28:55 2019 From: mark3575 at icloud.com (Mark Wheeler) Date: Fri, 11 Jan 2019 15:28:55 GMT Subject: [Elecraft] PX3 Span Function (WU6R - Mark) Message-ID: <48e8204b-ffb4-4480-84cb-69986678e732@me.com> Page 13 of the PX3 manual says the available span range is 2 kHz to 200 kHz, but I am not able to set my span beyond 100 kHz.? As an example, the top left of the PX3 display reads "3.700.000", The middle (VFO A) frequency reads "3.747.000", and The top right reads "3.800.000" Per the manual, I should be able to get a 200 kHz separation between the top left and right frequencies, but I am unable to do so by changing the span settings. Does anyone know what I may be doing wrong? ? 73, Mark WU6R From brian.waterworth at gmail.com Fri Jan 11 10:36:21 2019 From: brian.waterworth at gmail.com (Brian Waterworth) Date: Fri, 11 Jan 2019 10:36:21 -0500 Subject: [Elecraft] PX3 Span Function (WU6R - Mark) In-Reply-To: <48e8204b-ffb4-4480-84cb-69986678e732@me.com> References: <48e8204b-ffb4-4480-84cb-69986678e732@me.com> Message-ID: Page 25 of the PX3 manual says: The frequency span shown on the display in fixedtune mode is limited to ? 50 kHz (100 kHz total). If you enter fixed-tune mode with a wider span set, the span will be reduced automatically to ? 50 kHz. :-) Fixed tune mode was a welcome addition a couple of years ago to the PX3. regards, Brian VE3IBW On Fri, Jan 11, 2019 at 10:31 AM Mark Wheeler via Elecraft < elecraft at mailman.qth.net> wrote: > Page 13 of the PX3 manual says the available span range is 2 kHz to 200 > kHz, but I am not able to set my span beyond 100 kHz. > > As an example, the top left of the PX3 display reads "3.700.000", > The middle (VFO A) frequency reads "3.747.000", and > The top right reads "3.800.000" > > Per the manual, I should be able to get a 200 kHz separation between the > top left and right frequencies, but I am unable to do so by changing the > span settings. > > Does anyone know what I may be doing wrong? > > 73, > Mark > WU6R > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to brian.waterworth at gmail.com From edauer at law.du.edu Fri Jan 11 10:45:47 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Fri, 11 Jan 2019 15:45:47 +0000 Subject: [Elecraft] What's an Updated K3 called? Message-ID: <83CBD59D-99A9-439E-8319-6748CEF692CE@contoso.com> K3+ Too many permutations to indicate in a single label. On a resale the buyer can inquire. Ted, KN1CBR From wunder at wunderwood.org Fri Jan 11 10:56:28 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Fri, 11 Jan 2019 07:56:28 -0800 Subject: [Elecraft] Sorta OT - assistive technology assistance In-Reply-To: References: Message-ID: Since you are dead set on building one from scratch, start here. https://www.google.com/search?q=audio+mixer+circuit You'll see a lot of four-channel mixers because quad op-amps are cheap, under $1. This one has the pots before the op amps. https://www.allaboutcircuits.com/projects/build-an-audio-mixer/ This one has the pots after the op amps. http://www.theorycircuit.com/audio-mixer-circuit/ I?d be interested in the parts cost after you have chosen a design. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 10, 2019, at 11:36 PM, Richards wrote: > > THANK YOU for the several replies to my mixer circuit question - both on and off the list. Unfortunately, few actually answered the original question, most often advising me to abandon the project or mix on a computer sound card. > > First - Thanks, Steve, for your input based on personal experience. While I am familiar with your mixer, Tom prefers a device with stereo channels and outputs for both headphones and powered speakers. The model under consideration has only two control pots, making it easier to manage. Tom truly appreciates your personal input and direct correspondence off list. He puts a lot of stock in your take. > > Second - Tom prefers a simple hardware solution. Locating a manual control next to the rig is much easier (for him) to manage, than mixing with a computer sound card. Navigating multiple operating system windows is a serious challenge because he cannot see the monitor or use a mouse. This is not the preferred method for a contest or snagging rare DX before a pileup ensues. Mixing on a computer would be very inconvenient; close your eyes and try it some day! It's easy for you to say ... but, not so easy for my friend to do. > > Third - We can simply purchase a commercial product (I recommend the Rolls MINImix MS22s stereo mixer, with just two pots, and outputs for both headphones and speakers) > > UNFORTUNATELY, THAT DEFEATS THE WHOLE POINT BEHIND MY QUESTION. > > While I do NOT wish to look a gift horse in the chops, or appear ungrateful for the advice received so far; money is not the object as I want to LEARN how this type of circuit works, and do a favor for a friend, in one stroke. Advising me to save money and just buy a turn-key, off-the-shelf solution hardly fits the HAM RADIO TRADITION of experimentation and self-determination, and teaches me nothing about circuit design. I was hoping to build something MYSELF- earning that heady sense of self-satisfaction that accompanies the completion of a successful home brew project. Considering all the experts on this list, including world class board certified AES audio man Jim Brown, I figured a simple summing circuit would be a snap. > > I close this thread with a big THANK YOU on behalf of my ... um ... "client," whilst I repair to the proverbial drawing board to renew my search for a simple summing circuit. > > Happy trails to all. JR > > (We return you to your regular daily programming content) ;-) > > ----------------------------------------------------- > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From donanddeena at hotmail.com Fri Jan 11 10:56:58 2019 From: donanddeena at hotmail.com (Don Schroder) Date: Fri, 11 Jan 2019 15:56:58 +0000 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: <443f71b7-057d-32fe-3e52-84ace495db44@comcast.net> References: <5C38A87A.10674.323B7A@john.johnjeanantiqueradio.com>, <443f71b7-057d-32fe-3e52-84ace495db44@comcast.net> Message-ID: Hi all, It?s very obvious to me. Elecraft began with a K1, then ?updated? to a K2 (which I am building). Then they ?updated? to a K3, and all the new mods that go on it. So, it?s very obvious to me, that the new ?updated? radio should be called (ready for this?), THE K4 ! It naturally follows with their earlier naming scheme. Don, KE0PVQ Sent from Mail for Windows 10 ________________________________ From: elecraft-bounces at mailman.qth.net on behalf of Rich Sent: Friday, January 11, 2019 8:54:39 AM To: elecraft at mailman.qth.net Subject: Re: [Elecraft] whats a updated K3 called? OK I thought this was just a fun thing, I did not know it was actually a serious thing. Frankly a K3 is a K3 and a K3S is a K3S. The difference in each radio can vary wildly based on what the owner has installed in the radio as far as options go. That is the bottom line. To me the K3S options that are available for the K3 are nothing more than additional options. As for making a used purchase, the SN is critical. Rich On 1/11/2019 9:30 AM, John K9UWA wrote: > One would think that K3s represents multiple K3 radios. As in Plural of K3. > > I am sure that it causes some confusion to many who read the Elecraft reflector or > other places where the radios are discussed. > > I do thank Wayne and Eric for a list that says. The new radio has the following > differences to the K3 radio. As well as the portions of the K3 that can not be > upgraded to equal the new K3S radio. > > John k9uwa > John Goller, K9UWA & Jean Goller, N9PXF > Antique Radio Restorations > k9uwa at arrl.net > Visit our Web Site at: > http://www.JohnJeanAntiqueRadio.com > 4836 Ranch Road > Leo, IN 46765 > USA > 1-260-637-6426 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rwnewbould at comcast.net > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to donanddeena at hotmail.com From mark3575 at icloud.com Fri Jan 11 11:06:12 2019 From: mark3575 at icloud.com (Mark Wheeler) Date: Fri, 11 Jan 2019 16:06:12 GMT Subject: [Elecraft] PX3 Span Function (WU6R - Mark) Message-ID: <121e699e-075f-4586-87ed-be544b3a7783@me.com> Brian, Thanks! Mark WU6R On Jan 11, 2019, at 10:36 AM, Brian Waterworth wrote: Page 25 of the PX3 manual says: The frequency span shown on the display in fixedtune mode is limited to ? 50 kHz (100 kHz total). If you enter fixed-tune mode with a wider span set, the span will be reduced automatically to ? 50 kHz. :-)? Fixed tune mode was a welcome addition a couple of years ago to the PX3. regards,? Brian VE3IBW On Fri, Jan 11, 2019 at 10:31 AM Mark Wheeler via Elecraft wrote: Page 13 of the PX3 manual says the available span range is 2 kHz to 200 kHz, but I am not able to set my span beyond 100 kHz.? As an example, the top left of the PX3 display reads "3.700.000", The middle (VFO A) frequency reads "3.747.000", and The top right reads "3.800.000" Per the manual, I should be able to get a 200 kHz separation between the top left and right frequencies, but I am unable to do so by changing the span settings. Does anyone know what I may be doing wrong? ? 73, Mark WU6R ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to brian.waterworth at gmail.com From donwilh at embarqmail.com Fri Jan 11 11:11:28 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Fri, 11 Jan 2019 11:11:28 -0500 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: References: <5C38A87A.10674.323B7A@john.johnjeanantiqueradio.com> <443f71b7-057d-32fe-3e52-84ace495db44@comcast.net> Message-ID: <699962a3-0afc-1a7e-3ccf-df22d6574f45@embarqmail.com> Not quite right. The K2 was first - named after the mountain. The K1 came later, followed by the KX1. Then came the K3. The KX3 came after that - then the K3S, and finally, the KX2. 73, Don W3FPR On 1/11/2019 10:56 AM, Don Schroder wrote: > Hi all, > > > > It?s very obvious to me. Elecraft began with a K1, then ?updated? to a K2 (which I am building). Then they ?updated? to a K3, and all the new mods that go on it. So, it?s very obvious to me, that the new ?updated? radio should be called (ready for this?), THE K4 ! > > > > It naturally follows with their earlier naming scheme. > > > > Don, KE0PVQ > > > > Sent from Mail for Windows 10 > > > > ________________________________ > From: elecraft-bounces at mailman.qth.net on behalf of Rich > Sent: Friday, January 11, 2019 8:54:39 AM > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] whats a updated K3 called? > > OK I thought this was just a fun thing, I did not know it was actually a > serious thing. > > Frankly a K3 is a K3 and a K3S is a K3S. The difference in each radio > can vary wildly based on what the owner has installed in the radio as > far as options go. That is the bottom line. To me the K3S options > that are available for the K3 are nothing more than additional options. > > As for making a used purchase, the SN is critical. > > Rich > > On 1/11/2019 9:30 AM, John K9UWA wrote: >> One would think that K3s represents multiple K3 radios. As in Plural of K3. >> >> I am sure that it causes some confusion to many who read the Elecraft reflector or >> other places where the radios are discussed. >> >> I do thank Wayne and Eric for a list that says. The new radio has the following >> differences to the K3 radio. As well as the portions of the K3 that can not be >> upgraded to equal the new K3S radio. >> >> John k9uwa >> John Goller, K9UWA & Jean Goller, N9PXF >> Antique Radio Restorations >> k9uwa at arrl.net >> Visit our Web Site at: >> http://www.JohnJeanAntiqueRadio.com >> 4836 Ranch Road >> Leo, IN 46765 >> USA >> 1-260-637-6426 >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to rwnewbould at comcast.net >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donanddeena at hotmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com > From wa2lbi at gmail.com Fri Jan 11 11:38:50 2019 From: wa2lbi at gmail.com (Ken Winterling) Date: Fri, 11 Jan 2019 11:38:50 -0500 Subject: [Elecraft] Sorta OT - assistive technology assistance In-Reply-To: References: Message-ID: JR, Another approach to help your friend is to buy and install an inexpensive, simple mixer as he can clearly make use of it now. You can still build a mixer for the experience. After taking whatever time is necessary for designing, building, and debugging in your shop you can try it out at your friend?s location for a ?real world? evaluation by a real ?end user?. His feedback may give you an opportunity to provide improvements to your design or tailor it to his specific needs/desires. Ken WA2LBI On Fri, Jan 11, 2019 at 10:57 Walter Underwood wrote: > Since you are dead set on building one from scratch, start here. > > https://www.google.com/search?q=audio+mixer+circuit > > You'll see a lot of four-channel mixers because quad op-amps are cheap, > under $1. > > This one has the pots before the op amps. > > https://www.allaboutcircuits.com/projects/build-an-audio-mixer/ > > This one has the pots after the op amps. > > http://www.theorycircuit.com/audio-mixer-circuit/ > > I?d be interested in the parts cost after you have chosen a design. > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > > > On Jan 10, 2019, at 11:36 PM, Richards wrote: > > > > THANK YOU for the several replies to my mixer circuit question - both on > and off the list. Unfortunately, few actually answered the original > question, most often advising me to abandon the project or mix on a > computer sound card. > > > > First - Thanks, Steve, for your input based on personal experience. > While I am familiar with your mixer, Tom prefers a device with stereo > channels and outputs for both headphones and powered speakers. The model > under consideration has only two control pots, making it easier to manage. > Tom truly appreciates your personal input and direct correspondence off > list. He puts a lot of stock in your take. > > > > Second - Tom prefers a simple hardware solution. Locating a manual > control next to the rig is much easier (for him) to manage, than mixing > with a computer sound card. Navigating multiple operating system windows > is a serious challenge because he cannot see the monitor or use a mouse. > This is not the preferred method for a contest or snagging rare DX before a > pileup ensues. Mixing on a computer would be very inconvenient; close > your eyes and try it some day! It's easy for you to say ... but, not so > easy for my friend to do. > > > > Third - We can simply purchase a commercial product (I recommend the > Rolls MINImix MS22s stereo mixer, with just two pots, and outputs for both > headphones and speakers) > > > > UNFORTUNATELY, THAT DEFEATS THE WHOLE POINT BEHIND MY QUESTION. > > > > While I do NOT wish to look a gift horse in the chops, or appear > ungrateful for the advice received so far; money is not the object as I > want to LEARN how this type of circuit works, and do a favor for a friend, > in one stroke. Advising me to save money and just buy a turn-key, > off-the-shelf solution hardly fits the HAM RADIO TRADITION of > experimentation and self-determination, and teaches me nothing about > circuit design. I was hoping to build something MYSELF- earning that > heady sense of self-satisfaction that accompanies the completion of a > successful home brew project. Considering all the experts on this list, > including world class board certified AES audio man Jim Brown, I figured a > simple summing circuit would be a snap. > > > > I close this thread with a big THANK YOU on behalf of my ... um ... > "client," whilst I repair to the proverbial drawing board to renew my > search for a simple summing circuit. > > > > Happy trails to all. JR > > > > (We return you to your regular daily programming content) ;-) > > > > ----------------------------------------------------- > > > > -- Ken WA2LBI Sent from one of my mobile devices From norrislawfirm2 at gmail.com Fri Jan 11 12:03:13 2019 From: norrislawfirm2 at gmail.com (Eric Norris) Date: Fri, 11 Jan 2019 09:03:13 -0800 Subject: [Elecraft] [K2] Any N0SS amp keying boards out there? Message-ID: Does anyone have an N0SS (SK) K2 amplifier keying board, kit, or completed kit out there they would be interested in selling? Please contact me off list. Thanks. 73 Eric WD6DBM From norrislawfirm2 at gmail.com Fri Jan 11 12:13:12 2019 From: norrislawfirm2 at gmail.com (Eric Norris) Date: Fri, 11 Jan 2019 09:13:12 -0800 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: <699962a3-0afc-1a7e-3ccf-df22d6574f45@embarqmail.com> References: <5C38A87A.10674.323B7A@john.johnjeanantiqueradio.com> <443f71b7-057d-32fe-3e52-84ace495db44@comcast.net> <699962a3-0afc-1a7e-3ccf-df22d6574f45@embarqmail.com> Message-ID: That one was slow, waist-high, and right over the plate. :-) 73 Eric WD6DBM On Fri, Jan 11, 2019, 8:11 AM Don Wilhelm Not quite right. The K2 was first - named after the mountain. > The K1 came later, followed by the KX1. > Then came the K3. The KX3 came after that - then the K3S, and finally, > the KX2. > > 73, > Don W3FPR > > > From softblue at windstream.net Fri Jan 11 12:53:09 2019 From: softblue at windstream.net (Dick Dickinson) Date: Fri, 11 Jan 2019 12:53:09 -0500 Subject: [Elecraft] whats a updated K3 called? Message-ID: <000601d4a9d6$83d88e50$8b89aaf0$@windstream.net> The term 'Vintage' is often used on eBay to impart certain aspects of an item. A K3S might be 'Modern.' An updated K3 could be 'Modernized Vintage.' Dick - KA5KKT From wunder at wunderwood.org Fri Jan 11 12:53:04 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Fri, 11 Jan 2019 09:53:04 -0800 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: References: <2F66C451F70E4730ACC0A686A6352573@ww3s> Message-ID: <4A1CE917-435D-43D9-AD89-10FD8C520EF3@wunderwood.org> We could name them like fighter aircraft variants: K3 bis, K3 ter, K3 quater. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 11, 2019, at 6:17 AM, Bob McGraw K4TAX wrote: > > Clarification: > > The Tentec Omni VI Plus is not the same as the Tentec Omni VI, opt 3. There is a difference, in model number and performance and features. Thus from my take, a K3 upgrade is just that, a K3 that has the recommended factory upgrades installed. And a K3S is a K3S that can only come from the factory. And in both cases, presumably a difference in value for resale purposes. > > 73 > > Bob, K4TAX > > > On 1/11/2019 8:08 AM, Doug Person wrote: >> K3+ as the TenTec folks had referred to the Omni 6 with upgrades. >> >> Doug -- KJ0F >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From kl7uw at acsalaska.net Fri Jan 11 13:40:52 2019 From: kl7uw at acsalaska.net (Edward R Cole) Date: Fri, 11 Jan 2019 09:40:52 -0900 Subject: [Elecraft] whats a updated K3 called? Message-ID: <201901111840.x0BIeuML026223@mail46c28.carrierzone.com> Bernie, AF9US beat me to it. I thought K3U for updated or K3+. It would only designate it has hdwr updates but not which ones specifically. If selling, those should be listed by the seller and clarified whether self-installed or Elecraft-installed, which might matter to some buyers. My K3 SN-4340 bought in 2010 is upgraded with two new synth and modified gen coverage bw filter for operation on 630m. It has many options which I installed as a "kit". Firmware is not updated to latest vers (yet). So each radio is "customized" by the owner so a simple upgrade designation is kind of incomplete. I call my KX3 the KX3-2M to specify it has the 2m transverter mod (which I installed as a kit). But it has other options installed. But K3U is simple and, if adopted by this group, probably will "stick"! 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: dubususa at gmail.com From jon.kd3gz at gmail.com Fri Jan 11 13:46:22 2019 From: jon.kd3gz at gmail.com (Derek Brook) Date: Fri, 11 Jan 2019 13:46:22 -0500 Subject: [Elecraft] Fwd: K2/100 for sale In-Reply-To: <477b266a-887a-c28c-d3ed-d24e21e70a1e@elecraft.com> References: <477b266a-887a-c28c-d3ed-d24e21e70a1e@elecraft.com> Message-ID: ---------- Forwarded message --------- From: Keith Trinity WE6R Date: Fri, Jan 11, 2019 at 1:18 PM Subject: Re: K2/100 for sale To: Derek Brook Hi Derek; This came to Admin. Please post to elecraft at mailman.qth.net Keith WE6R On 1/11/2019 10:15 AM, Derek Brook wrote: I still have it ,because the last sale fall through the buyer back out. It comes with manuals,Mic & all cables $1000 shipped.Contact me via Email. Derek/KD3GZ From ghyoungman at gmail.com Fri Jan 11 13:50:21 2019 From: ghyoungman at gmail.com (Grant Youngman) Date: Fri, 11 Jan 2019 13:50:21 -0500 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: <201901111840.x0BIeuML026223@mail46c28.carrierzone.com> References: <201901111840.x0BIeuML026223@mail46c28.carrierzone.com> Message-ID: <6D6BA548-B612-4D1A-A963-AFF2F8AB491D@gmail.com> Except, it doesn?t actually MEAN anything. Unless you?ve been living in a cave since you bought one, almost every K3 is ?upgraded? to some extent. It doesn?t solve the basic problem ? a K3 (or even K3S to a lesser extent) needs to specify precisely (1) what published mods have been installed, (2) what factory mods have been installed, and (3) what options it contains. I?d certainly never buy someone?s K3U thing without that information ? with a ?U? or not. This is just nuts ? Grant NQ5T K3 #2091 KX3 #8342 > > But K3U is simple and, if adopted by this group, probably will "stick"! > From tony.kaz at verizon.net Fri Jan 11 14:08:13 2019 From: tony.kaz at verizon.net (N2TK, Tony) Date: Fri, 11 Jan 2019 14:08:13 -0500 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> Message-ID: <0c7a01d4a9e1$00779640$0166c2c0$@verizon.net> I had bought ear pad replacement covers for KOSS UR20, UR30 and SB40 that fit the CM-500 fine. I think they were $9 for a pair. It didn't take long to replace. It is a little pain getting the three screws lined up to assemble. 73, N2TK, Tony -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Bob McGraw K4TAX Sent: Wednesday, January 9, 2019 9:06 AM To: elecraft at mailman.qth.net Subject: Re: [Elecraft] Yama CM-500 Replacement I suggest another set of CM-500's. They may last 2 years, 5 years or 10 years before they are headed for the trash. Just look at it as a consumable item and that is just the cost of ownership. 73 Bob, K4TAX On 1/8/2019 9:00 PM, James Bennett via Elecraft wrote: > Sad to say, but my trusty old CM-500 headphones with boom mic finally bit the dust. The ear pads had started rotting away, leaving me with black pieces of gunk on my ears after every on-air session. Tried replacing the pads with a set of Koss pads but they simply were too small and I wound up breaking off the connectors going to the speakers. Life is too short to spend any more time messing with them, so it?s time to look for a replacement. > > I?d like to hear from others who are using a similar type of headphone/mic combo - one that is a direct plug-in to the back of a K3 like the Yamaha CM-500. If Yamaha would offer replacement parts to their users I?d consider getting another CM-500, but they don?t and I?m not inclined to buy something again that cannot easily be repaired. > > Suggestions?? > > Jim / w6JHB > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to tony.kaz at verizon.net From w6jhb at me.com Fri Jan 11 14:21:18 2019 From: w6jhb at me.com (James Bennett) Date: Fri, 11 Jan 2019 11:21:18 -0800 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: <0c7a01d4a9e1$00779640$0166c2c0$@verizon.net> References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> <0c7a01d4a9e1$00779640$0166c2c0$@verizon.net> Message-ID: Thanks guys - I wound up with a Koss SB45 headset - seems to work pretty well, although not as comfortable as the Yamaha. > On Jan 11, 2019, at 11:08 AM, N2TK, Tony wrote: > > I had bought ear pad replacement covers for KOSS UR20, UR30 and SB40 that fit the CM-500 fine. I think they were $9 for a pair. It didn't take long to replace. It is a little pain getting the three screws lined up to assemble. > 73, > N2TK, Tony > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net On Behalf Of Bob McGraw K4TAX > Sent: Wednesday, January 9, 2019 9:06 AM > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Yama CM-500 Replacement > > I suggest another set of CM-500's. They may last 2 years, 5 years or > 10 years before they are headed for the trash. Just look at it as a consumable item and that is just the cost of ownership. > > 73 > > Bob, K4TAX > > On 1/8/2019 9:00 PM, James Bennett via Elecraft wrote: >> Sad to say, but my trusty old CM-500 headphones with boom mic finally bit the dust. The ear pads had started rotting away, leaving me with black pieces of gunk on my ears after every on-air session. Tried replacing the pads with a set of Koss pads but they simply were too small and I wound up breaking off the connectors going to the speakers. Life is too short to spend any more time messing with them, so it?s time to look for a replacement. >> >> I?d like to hear from others who are using a similar type of headphone/mic combo - one that is a direct plug-in to the back of a K3 like the Yamaha CM-500. If Yamaha would offer replacement parts to their users I?d consider getting another CM-500, but they don?t and I?m not inclined to buy something again that cannot easily be repaired. >> >> Suggestions?? >> >> Jim / w6JHB >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message delivered to tony.kaz at verizon.net > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w6jhb at me.com From softblue at windstream.net Fri Jan 11 14:39:05 2019 From: softblue at windstream.net (Dick Dickinson) Date: Fri, 11 Jan 2019 14:39:05 -0500 Subject: [Elecraft] whats a updated K3 called? Message-ID: <001501d4a9e5$501e6080$f05b2180$@windstream.net> For those who dwell far to the right of the decimal point (rather than in caves), I suppose there could be a whole alphabet of suffix designations. My precise intent was a light-hearted, generic characterization. My K3 (Vintage - Upgraded) is not currently up for sale. Dick - KA5KKT ----------------------------------------------------------------------------------------------------------------- Except, it doesn?t actually MEAN anything. Unless you?ve been living in a cave since you bought one, almost every K3 is ?upgraded? to some extent. It doesn?t solve the basic problem ? a K3 (or even K3S to a lesser extent) needs to specify precisely (1) what published mods have been installed, (2) what factory mods have been installed, and (3) what options it contains. I?d certainly never buy someone?s K3U thing without that information ? with a ?U? or not. This is just nuts ? Grant NQ5T K3 #2091 KX3 #8342 > > But K3U is simple and, if adopted by this group, probably will "stick"! > From alorona at sbcglobal.net Fri Jan 11 14:48:54 2019 From: alorona at sbcglobal.net (Al Lorona) Date: Fri, 11 Jan 2019 19:48:54 +0000 (UTC) Subject: [Elecraft] Sorta OT - assistive technology assistance In-Reply-To: References: Message-ID: <662386660.10209974.1547236134380@mail.yahoo.com> JR - I have a folder of dozens of replies to Elecraft posts that I've never sent. (I try to exercise discipline so that the moderator doesn't have to slap me on the hand.) But your reply said *exactly* what a draft that I had written said. I'm very happy that you expressed the same idea. Building vs. buying, especially when buying is cheaper, is the homebrewer's dilemma. You now have to really want to learn something to build something yourself, and not merely save money.? More and more, homebrewing is in effect paying "tuition" to learn by doing. I built a QRP transceiver totally from scratch last year, and virtually everybody I told asked me, "Why?" It took me weeks and weeks and, had I not been blessed with a really good junk box, would have cost me more than a KX2. But... I got to work with some really cool ultra low noise op amps and figured out how to get a half-watt out of a 2N2222, so putting this particular rig on the air for the first time was my "diploma". I hope your construction project goes well. Please let us know when you get it working. Al? W6LX From josh at voodoolab.com Fri Jan 11 15:04:40 2019 From: josh at voodoolab.com (Josh Fiden) Date: Fri, 11 Jan 2019 12:04:40 -0800 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: <0c7a01d4a9e1$00779640$0166c2c0$@verizon.net> References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> <0c7a01d4a9e1$00779640$0166c2c0$@verizon.net> Message-ID: <5E1A3931-A027-449F-ABD4-AA347EE9FFE5@voodoolab.com> $5 free shipping direct from Koss, if these are the correct cushions. https://www.koss.com/accessories/cushions/ur20-ear-cushion 73 Josh W6XU Sent from my mobile device > On Jan 11, 2019, at 11:08 AM, N2TK, Tony wrote: > > I had bought ear pad replacement covers for KOSS UR20, UR30 and SB40 that fit the CM-500 fine. I think they were $9 for a pair. It didn't take long to replace. It is a little pain getting the three screws lined up to assemble. > From pincon at erols.com Fri Jan 11 15:36:43 2019 From: pincon at erols.com (Charlie T) Date: Fri, 11 Jan 2019 15:36:43 -0500 Subject: [Elecraft] whats a updated K3 called? In-Reply-To: References: <5C38A87A.10674.323B7A@john.johnjeanantiqueradio.com>, <443f71b7-057d-32fe-3e52-84ace495db44@comcast.net> Message-ID: <004601d4a9ed$60539260$20fab720$@erols.com> Yep, it almost as confusing as the progression of the Collins S-Line receivers, from the 75S-1, 75S-2, 75S-3, 75S-3A, 75S-3B, and finally, the 75S-3C. Personally, I feel the reason the K3s was not introduced as the K4, is that they didn't want to make all the K3 owners feel like Icom buyers. (Example: IC-756, IC-756PRO, IC-756PRO II, IC-756 PRO III, IC-7600 and now the IC-7610.) Not knocking Icom since I have owned each of them and understand their product development & marketing strategy. I currently have the IC-7610 as well as a K3s/P3/VGA and I like them both. 73, Charlie k3ICH -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Don Schroder Sent: Friday, January 11, 2019 10:57 AM To: Rich ; elecraft at mailman.qth.net Subject: Re: [Elecraft] whats a updated K3 called? Hi all, It's very obvious to me. Elecraft began with a K1, then "updated" to a K2 (which I am building). Then they "updated" to a K3, and all the new mods that go on it. So, it's very obvious to me, that the new "updated" radio should be called (ready for this?), THE K4 ! It naturally follows with their earlier naming scheme. Don, KE0PVQ Sent from Mail for Windows 10 ________________________________ From: elecraft-bounces at mailman.qth.net on behalf of Rich Sent: Friday, January 11, 2019 8:54:39 AM To: elecraft at mailman.qth.net Subject: Re: [Elecraft] whats a updated K3 called? OK I thought this was just a fun thing, I did not know it was actually a serious thing. Frankly a K3 is a K3 and a K3S is a K3S. The difference in each radio can vary wildly based on what the owner has installed in the radio as far as options go. That is the bottom line. To me the K3S options that are available for the K3 are nothing more than additional options. As for making a used purchase, the SN is critical. Rich On 1/11/2019 9:30 AM, John K9UWA wrote: > One would think that K3s represents multiple K3 radios. As in Plural of K3. > > I am sure that it causes some confusion to many who read the Elecraft > reflector or other places where the radios are discussed. > > I do thank Wayne and Eric for a list that says. The new radio has the > following differences to the K3 radio. As well as the portions of the > K3 that can not be upgraded to equal the new K3S radio. > > John k9uwa > John Goller, K9UWA & Jean Goller, N9PXF Antique Radio Restorations > k9uwa at arrl.net Visit our Web Site at: > http://www.JohnJeanAntiqueRadio.com > 4836 Ranch Road > Leo, IN 46765 > USA > 1-260-637-6426 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to > rwnewbould at comcast.net > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to donanddeena at hotmail.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to pincon at erols.com From pincon at erols.com Fri Jan 11 15:45:35 2019 From: pincon at erols.com (Charlie T) Date: Fri, 11 Jan 2019 15:45:35 -0500 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: <5E1A3931-A027-449F-ABD4-AA347EE9FFE5@voodoolab.com> References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> <0c7a01d4a9e1$00779640$0166c2c0$@verizon.net> <5E1A3931-A027-449F-ABD4-AA347EE9FFE5@voodoolab.com> Message-ID: <004701d4a9ee$9d7d9270$d878b750$@erols.com> If you can find ones that fit, I highly recommend a "Velour" version rather than the same old thin plastic that will eventually also flake off. I have three Sony MDR-7506s' and all have Velour pads. Once you try a set, you'll never want to go back to OEM pads. 73, Charlie k3ICH -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Josh Fiden Sent: Friday, January 11, 2019 3:05 PM To: Elecraft Reflector Subject: Re: [Elecraft] Yama CM-500 Replacement $5 free shipping direct from Koss, if these are the correct cushions. https://www.koss.com/accessories/cushions/ur20-ear-cushion 73 Josh W6XU Sent from my mobile device > On Jan 11, 2019, at 11:08 AM, N2TK, Tony wrote: > > I had bought ear pad replacement covers for KOSS UR20, UR30 and SB40 that fit the CM-500 fine. I think they were $9 for a pair. It didn't take long to replace. It is a little pain getting the three screws lined up to assemble. > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to pincon at erols.com From royord at gmail.com Fri Jan 11 15:56:30 2019 From: royord at gmail.com (Kevin F.) Date: Fri, 11 Jan 2019 13:56:30 -0700 (MST) Subject: [Elecraft] KX3 RX I/Q testing In-Reply-To: <1547097889570-0.post@n2.nabble.com> References: <1546745709079-0.post@n2.nabble.com> <1547097889570-0.post@n2.nabble.com> Message-ID: <1547240190852-0.post@n2.nabble.com> Thanks ALL for the help. I'm still getting zero audio out of RX I/Q and want to make sure that I have done my due diligence trying to figure out the issue. I'll have some adapters on their way later today for the 1/16th inch jack to put headphones on it that way I don't have to trust that my computer isn't dropping the signal from RX I/Q someplace. I'm looking at the hard step next, I haven't recently taken a backup of my radio, a full reset of the entire radio and re-alignment. I'm going to read about the steps before I commit to this however I'm not hearing the RX I/Q and there seems to be something strange happening with the CW RX audio in the 40 meter band that I'm also wondering if a re-alignment would clear up. -- Sent from: http://elecraft.365791.n2.nabble.com/ From ab2e at hotmail.com Fri Jan 11 16:01:38 2019 From: ab2e at hotmail.com (AB2E Darrell) Date: Fri, 11 Jan 2019 21:01:38 +0000 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> <0c7a01d4a9e1$00779640$0166c2c0$@verizon.net>, Message-ID: Hi all, I still have a CM-500 sitting here but rarely use it now. Just before CQWW CW in Nov I purchased an Inrad W1 headset. Outstanding performance, and 0 fatigue on your ears. While it doesn't claim to be a noise cancelling headset, with the high kerosene heater noise in my unheated garage shack, it did seem to lower the noise considerably. For those in noisy environments, I recommend the Bose QC35 or QC25. These are true noise cancelling headphones and are pricy (I was fortunate to get mine free with United Airlines mileage that was expiring). I also have a Heil Proset which I like, but ears are sore after a 48hr contest. I've used all of these on the K3 and/or Icom 7700,7800, and 756 Pro III. 73 and HNY. Darrell AB2E ________________________________ > On Jan 11, 2019, at 11:08 AM, N2TK, Tony wrote: > > I had bought ear pad replacement covers for KOSS UR20, UR30 and SB40 that fit the CM-500 fine. I think they were $9 for a pair. It didn't take long to replace. It is a little pain getting the three screws lined up to assemble. > 73, > N2TK, Tony > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net On Behalf Of Bob McGraw K4TAX > Sent: Wednesday, January 9, 2019 9:06 AM > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Yama CM-500 Replacement > > I suggest another set of CM-500's. They may last 2 years, 5 years or > 10 years before they are headed for the trash. Just look at it as a consumable item and that is just the cost of ownership. > > 73 > > Bob, K4TAX > > On 1/8/2019 9:00 PM, James Bennett via Elecraft wrote: >> Sad to say, but my trusty old CM-500 headphones with boom mic finally bit the dust. The ear pads had started rotting away, leaving me with black pieces of gunk on my ears after every on-air session. Tried replacing the pads with a set of Koss pads but they simply were too small and I wound up breaking off the connectors going to the speakers. Life is too short to spend any more time messing with them, so it?s time to look for a replacement. >> >> I?d like to hear from others who are using a similar type of headphone/mic combo - one that is a direct plug-in to the back of a K3 like the Yamaha CM-500. If Yamaha would offer replacement parts to their users I?d consider getting another CM-500, but they don?t and I?m not inclined to buy something again that cannot easily be repaired. >> >> Suggestions?? >> >> Jim / w6JHB >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message delivered to tony.kaz at verizon.net > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w6jhb at me.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ab2e at hotmail.com [https://ipmcdn.avast.com/images/icons/icon-envelope-tick-green-avg-v1.png] Virus-free. www.avg.com From w6jhb at me.com Fri Jan 11 16:07:54 2019 From: w6jhb at me.com (James Bennett) Date: Fri, 11 Jan 2019 13:07:54 -0800 Subject: [Elecraft] Yama CM-500 Replacement In-Reply-To: <004701d4a9ee$9d7d9270$d878b750$@erols.com> References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> <0c7a01d4a9e1$00779640$0166c2c0$@verizon.net> <5E1A3931-A027-449F-ABD4-AA347EE9FFE5@voodoolab.com> <004701d4a9ee$9d7d9270$d878b750$@erols.com> Message-ID: <08FEA36C-9B2E-4D5D-9174-FEAC2BB95B56@me.com> Well, after using those Koss SB45 cans for fifteen minutes - back they go to Amazon and a brand new pair of Yamaha CM500?s is on it?s way to me. My initial feeling was that the Koss was a tad tighter, but the more I wore them, the less comfortable I was with ?em. I guess that?s the difference between a $25 pair and a $56 pair. I hope the ear pads on this set last longer than the seven years I got out of the original. But, all things being equal, I suppose $8 per year isn?t bad? Let?s close this thread before Wayne drops the hammer on it. Thanks, and 73 to all who responded. Jim / W6JHB From jasimmons at pinewooddata.com Fri Jan 11 16:21:16 2019 From: jasimmons at pinewooddata.com (John Simmons) Date: Fri, 11 Jan 2019 15:21:16 -0600 Subject: [Elecraft] K3 TX power overshoot Message-ID: <5C3908CC.70906@pinewooddata.com> I have a 6xxx K3 (not S). The output of the radio is monitored by an LP100A wattmeter set to peak reading. The K3 drives an AL80B. I have just done a TX power calibration. With the K3 power output set to 60 watts and running SSB I will see about 64 watts output but occasionally see 74 watts peak on the LP100A. I am about to change to a solid state amp and am concerned that I will damage the solid state amp by overdriving. Is this normal behavior? If not, anything I can check, change or align? 73, -John NI0K From rmcgraw at blomand.net Fri Jan 11 16:35:42 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Fri, 11 Jan 2019 15:35:42 -0600 Subject: [Elecraft] K3 TX power overshoot In-Reply-To: <5C3908CC.70906@pinewooddata.com> References: <5C3908CC.70906@pinewooddata.com> Message-ID: <3f906a9c-3dba-1b9d-377a-8d1e68087351@blomand.net> I occasionally see a wee bit of overshoot as seen on my KPA500. I'm driving it from my K3S at about 20 watts for about 400 watts out on SSB.? Occasionally I'll see a 450 or 500 watt indication on the LED bargraph.? The KPA500 doesn't seem to mind. If I set the drive power to 20 watts CW mode, I never see any overshoot. There is a TXG VCE menu item in the CONFIG menu.?? Check the value of this.? It balances voice transmit peak power in relation to CW peak power.? See page 67 of the manual. 73 Bob, K4TAX On 1/11/2019 3:21 PM, John Simmons wrote: > I have a 6xxx K3 (not S). The output of the radio is monitored by an > LP100A wattmeter set to peak reading. The K3 drives an AL80B. I have > just done a TX power calibration. With the K3 power output set to 60 > watts and running SSB I will see about 64 watts output but > occasionally see 74 watts peak on the LP100A. I am about to change to > a solid state amp and am concerned that I will damage the solid state > amp by overdriving. > > Is this normal behavior? If not, anything I can check, change or align? > > 73, > -John NI0K > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From norrislawfirm2 at gmail.com Fri Jan 11 16:54:19 2019 From: norrislawfirm2 at gmail.com (Eric Norris) Date: Fri, 11 Jan 2019 13:54:19 -0800 Subject: [Elecraft] K3 TX power overshoot In-Reply-To: <5C3908CC.70906@pinewooddata.com> References: <5C3908CC.70906@pinewooddata.com> Message-ID: I see TX power overshoot when there is too much audio drive. The 5th bar should be flashing not solid on the ALC meter. Also, do a TX GAIN calibration procedure from the K3 Utility. My KPA500 has endured some massive peak power overshoots without destruction (1200w) before I readjusted things. I also use an LP-100, and it seems to have an extremely sensitive peak mode. 73 Eric WD6DBM On Fri, Jan 11, 2019, 1:21 PM John Simmons I have a 6xxx K3 (not S). The output of the radio is monitored by an > LP100A wattmeter set to peak reading. The K3 drives an AL80B. I have > just done a TX power calibration. With the K3 power output set to 60 > watts and running SSB I will see about 64 watts output but occasionally > see 74 watts peak on the LP100A. I am about to change to a solid state > amp and am concerned that I will damage the solid state amp by overdriving. > > Is this normal behavior? If not, anything I can check, change or align? > > 73, > -John NI0K > From sashangus at yahoo.com Fri Jan 11 19:11:45 2019 From: sashangus at yahoo.com (Robert Brown) Date: Fri, 11 Jan 2019 19:11:45 -0500 Subject: [Elecraft] whats a updated K3 called? Message-ID: An updated K3? I think they?re called ?a keeper.? Bob Brown, N1CVX K3 # 327 Sent from my iPad From frantz at pwpconsult.com Fri Jan 11 19:42:00 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Fri, 11 Jan 2019 16:42:00 -0800 Subject: [Elecraft] Sorta OT - assistive technology assistance In-Reply-To: <662386660.10209974.1547236134380@mail.yahoo.com> Message-ID: Real hams design and build their own radios. :-) (I'm not a real ham yet.) 73 Bill AE6JV On 1/11/19 at 11:48 AM, alorona at sbcglobal.net (Al Lorona) wrote: >I built a QRP transceiver totally from scratch last year, and >virtually everybody I told asked me, "Why?" It took me weeks >and weeks and, had I not been blessed with a really good junk >box, would have cost me more than a KX2. But... I got to work >with some really cool ultra low noise op amps and figured out >how to get a half-watt out of a 2N2222, so putting this >particular rig on the air for the first time was my "diploma". --------------------------------------------------------------------------- Bill Frantz | "I wish there was a knob on the TV to turn up the 408-356-8506 | intelligence. There's a knob called "brightness", but www.pwpconsult.com | it doesn't work. -- Gallagher From rmcgraw at blomand.net Fri Jan 11 19:48:15 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Fri, 11 Jan 2019 18:48:15 -0600 Subject: [Elecraft] Sorta OT - assistive technology assistance In-Reply-To: References: Message-ID: Been there, done that.? Too smart and too old to do it again. Buying is better.?? Operating what one has purchased is more fun. Better yet, learning to operate what one has purchased is very gratifying. 73 Bob, K4TAX K3S, P3, KPA500, KAT500 On 1/11/2019 6:42 PM, Bill Frantz wrote: > Real hams design and build their own radios. :-) (I'm not a real ham > yet.) > > 73 Bill AE6JV > > From nr4c at widomaker.com Fri Jan 11 20:21:46 2019 From: nr4c at widomaker.com (Nr4c) Date: Fri, 11 Jan 2019 20:21:46 -0500 Subject: [Elecraft] KX3 RX I/Q testing In-Reply-To: <1547240190852-0.post@n2.nabble.com> References: <1546745709079-0.post@n2.nabble.com> <1547097889570-0.post@n2.nabble.com> <1547240190852-0.post@n2.nabble.com> Message-ID: <95EB2E35-76C5-4F78-BAB2-6C95C5B385F0@widomaker.com> The jack is 3/32 inch or 2.5 mm. Have you tried connecting the I/Q output to a computer and some SDR software that actually uses I/Q input? I don?t think you?ll hear much using phones. Scope should show the signal I would think. Be sure to push plug all the way into the hack. It is very stiff for the first several times. Sent from my iPhone ...nr4c. bill > On Jan 11, 2019, at 3:56 PM, Kevin F. wrote: > > Thanks ALL for the help. > > I'm still getting zero audio out of RX I/Q and want to make sure that I have > done my due diligence trying to figure out the issue. I'll have some > adapters on their way later today for the 1/16th inch jack to put headphones > on it that way I don't have to trust that my computer isn't dropping the > signal from RX I/Q someplace. > > I'm looking at the hard step next, I haven't recently taken a backup of my > radio, a full reset of the entire radio and re-alignment. I'm going to read > about the steps before I commit to this however I'm not hearing the RX I/Q > and there seems to be something strange happening with the CW RX audio in > the 40 meter band that I'm also wondering if a re-alignment would clear up. > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From donwilh at embarqmail.com Fri Jan 11 20:51:25 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Fri, 11 Jan 2019 20:51:25 -0500 Subject: [Elecraft] KX3 RX I/Q testing In-Reply-To: <1547097889570-0.post@n2.nabble.com> References: <1546745709079-0.post@n2.nabble.com> <1547097889570-0.post@n2.nabble.com> Message-ID: <6469900f-0a15-1770-1dca-ad8265b353c3@embarqmail.com> Kevin, You are unlikely to hear anything from the headphones from that jack. Feed it into a soundcard and you should see something using a panadapter application like HDSDR or NaP3. The RX I/Q output is low level and broadband. It is not suitable for digital mode software like FlDigi. For that software, use the Phones jack. 73, Don W3FPR On 1/10/2019 12:24 AM, Kevin F. wrote: > I did check that the RX I/Q was enabled and still hear nothing, on my > computer, when plugged in to the RX I/Q port. I'm ordering a set of adapters > so that I can put my headphones on the radio directly to see what I hear > then. Thanks all for trying to help... > > I still wonder if I should hear anything with the RX I/Q enabled or not, it > would be great if someone could answer that question. From billamader at gmail.com Fri Jan 11 22:34:16 2019 From: billamader at gmail.com (K8TE) Date: Fri, 11 Jan 2019 20:34:16 -0700 (MST) Subject: [Elecraft] whats a updated K3 called? In-Reply-To: References: <2F66C451F70E4730ACC0A686A6352573@ww3s> <5C38A87A.10674.323B7A@john.johnjeanantiqueradio.com> <443f71b7-057d-32fe-3e52-84ace495db44@comcast.net> Message-ID: <1547264056132-0.post@n2.nabble.com> Don, While perhaps "obvious," the models you describe are not updates of previous versions in the order as W3FPR pointed out in a subsequent message. Those radios are very different from each other in many aspects, especially performance. Although, each is considered by most to be a top performer in its class. I am amused by many who add one or more of the new K3S modules to their K3 and then call their radio a K3S. They are not and never will be. An upgraded K3 can approach a K3S, but not quite get there. I hate to start another K4 e-mail chain. It may be too late now. If I were to bet, I would bet the next Elecraft top-of-the-line K? will likely use a newer topology than the K3. However, the K3S is number three on Rob Sherwood's receiver performance list. As Rob has pointed out the last several years, transmitter performance (cleanliness) is where most radios need improvement today. Regardless, when operating Field Day or any multi-multi event, my K3 with updated (correct term in this case) synthesizers is my radio of choice. I have seen how many new radios "collapse" under the strain of other nearby transmitters. At the same time, there are other radios with comparable performance in similar situations. I am anxiously waiting for the Elecraft next iteration, whether or not it's designated K4, to take the lead. 73, Bill, K8TE Hi all, It?s very obvious to me. Elecraft began with a K1, then ?updated? to a K2 (which I am building). Then they ?updated? to a K3, and all the new mods that go on it. So, it?s very obvious to me, that the new ?updated? radio should be called (ready for this?), THE K4 ! It naturally follows with their earlier naming scheme. Don, KE0PVQ -- Sent from: http://elecraft.365791.n2.nabble.com/ From tchrme at aol.com Fri Jan 11 23:38:14 2019 From: tchrme at aol.com (Mike Lichtman) Date: Fri, 11 Jan 2019 20:38:14 -0800 Subject: [Elecraft] Query for new DSP features Message-ID: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> Wayne, I would like to see an improved Noise Reduction that doesn?t lower the volume or distort as much. Also the digital mode decode has never really worked well for me and, yes, I read the manual about using it. Could you have the digital choices RTTY, PSK31, etc. instead of the current settings like FSK, data, etc? Pie in the sky thought ? Having the radio identify the type of digital signal being received with a word in the display and automatically change modes/settings to accommodate it. 73 Mike KF6KXG From wunder at wunderwood.org Fri Jan 11 23:49:50 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Fri, 11 Jan 2019 20:49:50 -0800 Subject: [Elecraft] Query for new DSP features In-Reply-To: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> References: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> Message-ID: It would be really great if the AF gain was automatically to keep the audio roughly level when NR is engaged. This drives me nuts, always riding the gain back and forth. I?m sure the gain adjustment would be different for different conditions, but at least get close. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 11, 2019, at 8:38 PM, Mike Lichtman via Elecraft wrote: > > Wayne, > I would like to see an improved Noise Reduction that doesn?t lower the volume or distort as much. Also the digital mode decode has never really worked well for me and, yes, > I read the manual about using it. Could you have the digital choices RTTY, PSK31, etc. instead of the current settings like FSK, data, etc? > Pie in the sky thought ? Having the radio identify the type of digital signal being received with a word in the display and automatically change modes/settings to accommodate it. 73 Mike KF6KXG > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From john.evans.n0hj at gmail.com Fri Jan 11 23:53:31 2019 From: john.evans.n0hj at gmail.com (John Evans) Date: Fri, 11 Jan 2019 21:53:31 -0700 Subject: [Elecraft] Query for new DSP features In-Reply-To: References: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> Message-ID: <255e1008-3eb0-1fda-0856-79498664fbd4@gmail.com> And yet, I have no idea which Elecraft rig you are referring to here.? Drives us K1, K2, KX3 owners crazy. 73 - john - n0hj On 1/11/2019 9:49 PM, Walter Underwood wrote: > It would be really great if the AF gain was automatically to keep the audio roughly level when NR is engaged. This drives me nuts, always riding the gain back and forth. I?m sure the gain adjustment would be different for different conditions, but at least get close. > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > >> On Jan 11, 2019, at 8:38 PM, Mike Lichtman via Elecraft wrote: >> >> Wayne, >> I would like to see an improved Noise Reduction that doesn?t lower the volume or distort as much. Also the digital mode decode has never really worked well for me and, yes, >> I read the manual about using it. Could you have the digital choices RTTY, PSK31, etc. instead of the current settings like FSK, data, etc? >> Pie in the sky thought ? Having the radio identify the type of digital signal being received with a word in the display and automatically change modes/settings to accommodate it. 73 Mike KF6KXG From royord at gmail.com Sat Jan 12 01:38:32 2019 From: royord at gmail.com (Kevin F.) Date: Fri, 11 Jan 2019 23:38:32 -0700 (MST) Subject: [Elecraft] KX3 CW Audio Stereo (Issue) Message-ID: <1547275112206-0.post@n2.nabble.com> Last night while operating CWT I ran across a part of the band that changed the "Phones" audio, has anyone else ran across this issue happening at or near 7.035323 to 7.035324 is the frequency that does it for me, all of a sudden I have CW in just one ear instead of two. Thanks for any help that you can provide. Thanks, Kevin F. -- Sent from: http://elecraft.365791.n2.nabble.com/ From royord at gmail.com Sat Jan 12 02:48:19 2019 From: royord at gmail.com (Kevin F.) Date: Sat, 12 Jan 2019 00:48:19 -0700 (MST) Subject: [Elecraft] KX3 RX I/Q testing In-Reply-To: References: <1546745709079-0.post@n2.nabble.com> Message-ID: <1547279299115-0.post@n2.nabble.com> I tried with iSDR which is made for iOS, sound card is working, RX I/Q is not from my radio. -- Sent from: http://elecraft.365791.n2.nabble.com/ From royord at gmail.com Sat Jan 12 02:50:03 2019 From: royord at gmail.com (Kevin F.) Date: Sat, 12 Jan 2019 00:50:03 -0700 (MST) Subject: [Elecraft] KX3 RX I/Q testing In-Reply-To: <95EB2E35-76C5-4F78-BAB2-6C95C5B385F0@widomaker.com> References: <1546745709079-0.post@n2.nabble.com> <1547097889570-0.post@n2.nabble.com> <1547240190852-0.post@n2.nabble.com> <95EB2E35-76C5-4F78-BAB2-6C95C5B385F0@widomaker.com> Message-ID: <1547279403303-0.post@n2.nabble.com> I will report back after trying some of the I/Q based softwares out there, however I did try iSDR which is supposed to work with USB sound card, it didn't work. I'll try the windows based program tomorrow and report back. -- Sent from: http://elecraft.365791.n2.nabble.com/ From royord at gmail.com Sat Jan 12 02:55:00 2019 From: royord at gmail.com (Kevin F.) Date: Sat, 12 Jan 2019 00:55:00 -0700 (MST) Subject: [Elecraft] KX3 CW Audio Stereo (Issue) In-Reply-To: <1547275112206-0.post@n2.nabble.com> References: <1547275112206-0.post@n2.nabble.com> Message-ID: <1547279700315-0.post@n2.nabble.com> I found the issue, I had dual RX enabled and when you cross the band for the 2nd VFO it goes into stereo one receive in each ear. I've turned that off and have full stereo in my earphones again with CW. -- Sent from: http://elecraft.365791.n2.nabble.com/ From tony.kaz at verizon.net Sat Jan 12 07:51:59 2019 From: tony.kaz at verizon.net (N2TK, Tony) Date: Sat, 12 Jan 2019 07:51:59 -0500 Subject: [Elecraft] Yama CM-500 Replacement References: <6634C287-EB15-431D-860E-FE7942D7FBC5@me.com> Message-ID: <14f301d4aa75$9bdbdd00$d3939700$@verizon.net> I dug up some more info on replacement cushions. I had first bought a pair of the replacement cushions from AliExpress. They did not include the flat foam earpad covers. Only included were the ear pad cushions. I then bought a pair on eBay, item # 112534201835 that included the flat foam earpad covers. 73, N2TK, Tony -----Original Message----- From: N2TK, Tony Sent: Friday, January 11, 2019 2:08 PM To: 'Bob McGraw K4TAX' ; 'elecraft at mailman.qth.net' Subject: RE: [Elecraft] Yama CM-500 Replacement I had bought ear pad replacement covers for KOSS UR20, UR30 and SB40 that fit the CM-500 fine. I think they were $9 for a pair. It didn't take long to replace. It is a little pain getting the three screws lined up to assemble. 73, N2TK, Tony -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Bob McGraw K4TAX Sent: Wednesday, January 9, 2019 9:06 AM To: elecraft at mailman.qth.net Subject: Re: [Elecraft] Yama CM-500 Replacement I suggest another set of CM-500's. They may last 2 years, 5 years or 10 years before they are headed for the trash. Just look at it as a consumable item and that is just the cost of ownership. 73 Bob, K4TAX On 1/8/2019 9:00 PM, James Bennett via Elecraft wrote: > Sad to say, but my trusty old CM-500 headphones with boom mic finally bit the dust. The ear pads had started rotting away, leaving me with black pieces of gunk on my ears after every on-air session. Tried replacing the pads with a set of Koss pads but they simply were too small and I wound up breaking off the connectors going to the speakers. Life is too short to spend any more time messing with them, so it?s time to look for a replacement. > > I?d like to hear from others who are using a similar type of headphone/mic combo - one that is a direct plug-in to the back of a K3 like the Yamaha CM-500. If Yamaha would offer replacement parts to their users I?d consider getting another CM-500, but they don?t and I?m not inclined to buy something again that cannot easily be repaired. > > Suggestions?? > > Jim / w6JHB > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to tony.kaz at verizon.net From bill at w2blc.net Sat Jan 12 09:00:19 2019 From: bill at w2blc.net (bill) Date: Sat, 12 Jan 2019 09:00:19 -0500 Subject: [Elecraft] Query for new DSP features In-Reply-To: <255e1008-3eb0-1fda-0856-79498664fbd4@gmail.com> References: <255e1008-3eb0-1fda-0856-79498664fbd4@gmail.com> Message-ID: <998df78c-8a8f-6014-a482-aef389ddcd56@w2blc.net> Regarding my K3 (original): DSP reduces the volume. When you turn the volume up to where you can again hear - the junk noise level is right back up there also. A couple of days ago we had a major wind storm and a power line down the road was periodically arcing. It was uncomfortable to listen to (on LSB 75 meters). I was using my Icom 7300 and pushed the NR button. Amazing, the noises were reduced to nearly nothing and the audio level remained as it had been. Then I switched to the K3 and tried the Noise Reduction - no joy. I tried various settings, all under water and reduced volume. I went back to the 7300 and continued enjoying my armchair copy 75 meter QSO. Oh yes, I do know about reducing RX gain and proper use of ATT. Sure, the argument can be made that the 7300 is a newer rig. You can also argue that the DSP can be updated via software for the K3. Sadly, since I purchased my IC-7300, I have only used the K3 for a few CW contacts. Understand, my ham radio activities are 99% LSB on 160/75/40 meters. I do not DX or contest. No external VFO or keypad for the 7300,which I do miss. However,a plastic stylus does wonderful on the touch screen. From jthorpe at liberty.edu Sat Jan 12 09:19:00 2019 From: jthorpe at liberty.edu (Thorpe, Jeffrey) Date: Sat, 12 Jan 2019 14:19:00 +0000 Subject: [Elecraft] KX3 RX I/Q testing In-Reply-To: <1547279403303-0.post@n2.nabble.com> References: <1546745709079-0.post@n2.nabble.com> <1547097889570-0.post@n2.nabble.com> <1547240190852-0.post@n2.nabble.com> <95EB2E35-76C5-4F78-BAB2-6C95C5B385F0@widomaker.com>, <1547279403303-0.post@n2.nabble.com> Message-ID: <23AD8DC5-567D-42F4-B873-AF2D8A598EA0@liberty.edu> iSDR does require a USB soundcard with a stereo mic input, like the Griffin. The easiest way to check if you are utilizing the stereo mic function in iSDR is to check your iPad screen while running it and see if you are getting 22 or 44 kHz. If it shows 22, you are only getting mono mic. Jeff - KG7HDZ > On Jan 12, 2019, at 12:51 AM, Kevin F. wrote: > > I will report back after trying some of the I/Q based softwares out there, > however I did try iSDR which is supposed to work with USB sound card, it > didn't work. I'll try the windows based program tomorrow and report back. > > > > -- > Sent from: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Felecraft.365791.n2.nabble.com%2F&data=02%7C01%7CJthorpe%40liberty.edu%7Cc3f95685d75d4e33cbec08d67862bfbc%7Cbaf8218eb3024465a9934a39c97251b2%7C0%7C0%7C636828762862572776&sdata=NIPJjCRoRq7ea7gPQHqlz5qHibgehpi9lKQQYM2YGNw%3D&reserved=0 > ______________________________________________________________ > Elecraft mailing list > Home: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7CJthorpe%40liberty.edu%7Cc3f95685d75d4e33cbec08d67862bfbc%7Cbaf8218eb3024465a9934a39c97251b2%7C0%7C0%7C636828762862572776&sdata=63D5I1oY1FywTWp9fOZ6TLPBsvhVWxnkCPTFG16DCqA%3D&reserved=0 > Help: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7CJthorpe%40liberty.edu%7Cc3f95685d75d4e33cbec08d67862bfbc%7Cbaf8218eb3024465a9934a39c97251b2%7C0%7C0%7C636828762862572776&sdata=OwvFS97qu%2B1uEvyaCmmKjdTETDSnkKcnJ6udK9RhnlY%3D&reserved=0 > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net&data=02%7C01%7CJthorpe%40liberty.edu%7Cc3f95685d75d4e33cbec08d67862bfbc%7Cbaf8218eb3024465a9934a39c97251b2%7C0%7C0%7C636828762862572776&sdata=jzTgds7NL9SStQ8VQlAupAueHhyv4%2BOiKOZeZ8xxikM%3D&reserved=0 > Please help support this email list: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7CJthorpe%40liberty.edu%7Cc3f95685d75d4e33cbec08d67862bfbc%7Cbaf8218eb3024465a9934a39c97251b2%7C0%7C0%7C636828762862572776&sdata=MK61UJTOcczC3y458YjyE%2BNHsjno8OT5tSrEQe8D4XY%3D&reserved=0 > Message delivered to jthorpe at liberty.edu From rmcgraw at blomand.net Sat Jan 12 09:56:21 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sat, 12 Jan 2019 08:56:21 -0600 Subject: [Elecraft] Query for new DSP features In-Reply-To: References: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> Message-ID: Use external audio processing, otherwise a compressor or limiter, with variable attack and release and threshold and ratio controls. ? Then follow that with a small power amp to drive an external speaker. ? ? Frankly, I doubt you'd like the results. I find it better to not use the NR feature due to the artifacts introduced into the signal? and I find it much more satisfactory to correctly adjust the Attenuation and RF Gain. 73 Bob, K4TAX On 1/11/2019 10:49 PM, Walter Underwood wrote: > It would be really great if the AF gain was automatically to keep the audio roughly level when NR is engaged. This drives me nuts, always riding the gain back and forth. I?m sure the gain adjustment would be different for different conditions, but at least get close. > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > >> On Jan 11, 2019, at 8:38 PM, Mike Lichtman via Elecraft wrote: >> >> Wayne, >> I would like to see an improved Noise Reduction that doesn?t lower the volume or distort as much. Also the digital mode decode has never really worked well for me and, yes, >> I read the manual about using it. Could you have the digital choices RTTY, PSK31, etc. instead of the current settings like FSK, data, etc? >> Pie in the sky thought ? Having the radio identify the type of digital signal being received with a word in the display and automatically change modes/settings to accommodate it. 73 Mike KF6KXG >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to wunder at wunderwood.org > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From wunder at wunderwood.org Sat Jan 12 11:20:31 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Sat, 12 Jan 2019 08:20:31 -0800 Subject: [Elecraft] Query for new DSP features In-Reply-To: <255e1008-3eb0-1fda-0856-79498664fbd4@gmail.com> References: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> <255e1008-3eb0-1fda-0856-79498664fbd4@gmail.com> Message-ID: Sorry, KX3. Though I think the K3 and KX2 use similar algorithms. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 11, 2019, at 8:53 PM, John Evans wrote: > > And yet, I have no idea which Elecraft rig you are referring to here. Drives us K1, K2, KX3 owners crazy. > > 73 - john - n0hj > > On 1/11/2019 9:49 PM, Walter Underwood wrote: >> It would be really great if the AF gain was automatically to keep the audio roughly level when NR is engaged. This drives me nuts, always riding the gain back and forth. I?m sure the gain adjustment would be different for different conditions, but at least get close. >> >> wunder >> K6WRU >> Walter Underwood >> CM87wj >> http://observer.wunderwood.org/ (my blog) >> >>> On Jan 11, 2019, at 8:38 PM, Mike Lichtman via Elecraft wrote: >>> >>> Wayne, >>> I would like to see an improved Noise Reduction that doesn?t lower the volume or distort as much. Also the digital mode decode has never really worked well for me and, yes, >>> I read the manual about using it. Could you have the digital choices RTTY, PSK31, etc. instead of the current settings like FSK, data, etc? >>> Pie in the sky thought ? Having the radio identify the type of digital signal being received with a word in the display and automatically change modes/settings to accommodate it. 73 Mike KF6KXG > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From kl7uw at acsalaska.net Sat Jan 12 11:34:31 2019 From: kl7uw at acsalaska.net (Edward R Cole) Date: Sat, 12 Jan 2019 07:34:31 -0900 Subject: [Elecraft] Sorta OT - assistive technology assistance Message-ID: <201901121634.x0CGYXS9030452@mail46c28.carrierzone.com> Al-W6LX, Commendable. I enjoy building stuff, too. Not so far as to design a radio "ground up" but my first ham radio was a kit back when I was 14 years old. Mainly because it was cheaper ($19.95 in 1958). When I got my Novice license my dad bought my elmer's DX35 for me (he wanted to upgrade to DX100). Later getting on 2m AM a friend modified my WWII aircraft radio for me (still a teen with no experience or test equip) but I built two 8-element yagis from conduit and aluminum ground wire and put up a small tower (with manual rotation). Over time I learned more and took on bigger projects (see my website for examples). Now on 630m to 3cm. EME on three bands going to five bands. Along the way I got a college degree and had some nifty jobs (sent a few spacecraft out into the Universe). Now retired and finishing up a 1200w sspa kit for 2m. I built a few Heathkits in my time. I consider a kit as something you solder vs just assembling hardware (sorry Elecraft). My Elecraft are all "kits" partly because I am cheap. But I also felt it made little sense to reinvent things one could buy good quality. Thus I have my K3U and KX3-2M; an old FT-736R and an old MOT 900-MHz mobile radio. I do not bake my own integrated ckts but will solder a few onto my custom pcb's. Nothing wrong with buying vs building; you still have to put the station together as a system. 73, Ed - KL7UW http://www.kl7uw.com/ From: Al Lorona To: elecraft at mailman.qth.net, Richards Subject: Re: [Elecraft] Sorta OT - assistive technology assistance Message-ID: <662386660.10209974.1547236134380 at mail.yahoo.com> Content-Type: text/plain; charset=UTF-8 JR - I have a folder of dozens of replies to Elecraft posts that I've never sent. (I try to exercise discipline so that the moderator doesn't have to slap me on the hand.) But your reply said *exactly* what a draft that I had written said. I'm very happy that you expressed the same idea. Building vs. buying, especially when buying is cheaper, is the homebrewer's dilemma. You now have to really want to learn something to build something yourself, and not merely save money.? More and more, homebrewing is in effect paying "tuition" to learn by doing. I built a QRP transceiver totally from scratch last year, and virtually everybody I told asked me, "Why?" It took me weeks and weeks and, had I not been blessed with a really good junk box, would have cost me more than a KX2. But... I got to work with some really cool ultra low noise op amps and figured out how to get a half-watt out of a 2N2222, so putting this particular rig on the air for the first time was my "diploma". I hope your construction project goes well. Please let us know when you get it working. Al? W6LX 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: dubususa at gmail.com From forums at david-woolley.me.uk Sat Jan 12 11:51:24 2019 From: forums at david-woolley.me.uk (David Woolley) Date: Sat, 12 Jan 2019 16:51:24 +0000 Subject: [Elecraft] Query for new DSP features In-Reply-To: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> References: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> Message-ID: <8c1661a6-4d5d-6b80-69c5-493d9adfd25a@david-woolley.me.uk> Do you have a reference for an algorithm that will do this? Noise reduction is difficult because any effective noise reduction has to recognize what is signal, and ideally what is the part of the signal that matters to the human. The hearing aid industry has been trying to do this for years, with limited success. I think the sort of noise reduction we are talking about here essentially tries to decide which frequencies matter and which don't and eliminate the latter. However, it has to do this when what it is trying to identify as signal is hidden by noise. In practice, I think what these systems achieve is increased user comfort, rather than recovering signal from noise, as humans are probably still a lot better at extracting signal from noise than algorithms, but they get tired in doing so. One consequence of selective filtering will be a reduction in total audio power. I'd expect the total loudness to go down. I guess you could then renormalise, and increase the signal power to bring the total power up to the same level. However, most of are old enough to have a lot of high frequency hearing loss, so one may find that correction needed depends on specific hearing loss of the user and the original spectrum of the noise; one needs to renormalise the power as waited by the hearing sensitivity curve of the user. I imagine you would need, at least, a parameter to determine the degree of renormalisation. Also, the more aggressive you make this sort of noise suppression, the more likely it is to have false positives, and suppress important frequencies. Also, the more aggressive you make it, the more you will get distortion as the result of modifying filter parameters on the fly. Ultimately, though, the sort of noise that these systems are trying to remove is random in nature, so you can never be completely sure what is signal and what is noise. (Hearing aids have a particularly difficult problem in that they are dealing with cocktail party noise, where the noise is the summation of lots of things that would, individually, be signals.) (The ultimate noise reduction system would be one that recognized the speech and regenerated it, complete with characteristics of the original speaker. However, doing that really well can only be done by looking ahead several seconds, to be able to interpret meaning from what follows, as well as what precedes.) As a caution, I believe the K3 has two different noise handling strategies: the one I am talking about here, and one designed to deal with impulse noise, where you simply cut out a short section of signal around the noise pulse. -- David Woolley Owner K2 01623 On 12/01/2019 04:38, Mike Lichtman wrote: > I would like to see an improved Noise Reduction that doesn?t lower the volume or distort as much. From donwilh at embarqmail.com Sat Jan 12 12:33:24 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sat, 12 Jan 2019 12:33:24 -0500 Subject: [Elecraft] Query for new DSP features In-Reply-To: <8c1661a6-4d5d-6b80-69c5-493d9adfd25a@david-woolley.me.uk> References: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> <8c1661a6-4d5d-6b80-69c5-493d9adfd25a@david-woolley.me.uk> Message-ID: David's analysis is correct. Go to his last sentence - that is the Noise Blanker (NB) and not Noise Reduction (NR). NB punches a hole in the signal in response to impulse noise. It will cause signal distortion, getting worse with more aggressive settings. Noise Reduction (NR) depends on correlation techniques. It has to determine what is a signal, and then build a filter around that. Once the filter is built, then the signal audio should be the same as normal, but the noise content will be reduced. Yes, NR will cause distortion of the signal, but the idea is to be able to maintain communications rather than simply to get rid of the noise. The K3/K3S/KX3/KX2 NR has several settings to allow you to customize the noise reduction to the particular noise you are encountering. There is no "one size fits all" for all noise sources. I have "repaired" several K2s equipped with the KDSP2 which were sent to me for "distorted audio" and the "cure" was to simply turn off NR in the KDSP2. Yes, you should expect some audio distortion when using NR. 73, Don W3FPR On 1/12/2019 11:51 AM, David Woolley wrote: > Do you have a reference for an algorithm that will do this? > > Noise reduction is difficult because any effective noise reduction has > to recognize what is signal, and ideally what is the part of the signal > that matters to the human.? The hearing aid industry has been trying to > do this for years, with limited success. > > I think the sort of noise reduction we are talking about here > essentially tries to decide which frequencies matter and which don't and > eliminate the latter.? However, it has to do this when what it is trying > to identify as signal is hidden by noise. > > In practice, I think what these systems achieve is increased user > comfort, rather than recovering signal from noise, as humans are > probably still a lot better at extracting signal from noise than > algorithms, but they get tired in doing so. > > One consequence of selective filtering will be a reduction in total > audio power.? I'd expect the total loudness to go down.? I guess you > could then renormalise, and increase the signal power to bring the total > power up to the same level.? However, most of are old enough to have a > lot of high frequency hearing loss, so one may find that correction > needed depends on specific hearing loss of the user and the original > spectrum of the noise; one needs to renormalise the power as waited by > the hearing sensitivity curve of the user.? I imagine you would need, at > least, a parameter to determine the degree of renormalisation. > > Also, the more aggressive you make this sort of noise suppression, the > more likely it is to have false positives, and suppress important > frequencies.? Also, the more aggressive you make it, the more you will > get distortion as the result of modifying filter parameters on the fly. > > Ultimately, though, the sort of noise that these systems are trying to > remove is random in nature, so you can never be completely sure what is > signal and what is noise. > > (Hearing aids have a particularly difficult problem in that they are > dealing with cocktail party noise, where the noise is the summation of > lots of things that would, individually, be signals.) > > (The ultimate noise reduction system would be one that recognized the > speech and regenerated it, complete with characteristics of the original > speaker.? However, doing that really well can only be done by looking > ahead several seconds, to be able to interpret meaning from what > follows, as well as what precedes.) > > As a caution, I believe the K3 has two different noise handling > strategies:? the one I am talking about here, and one designed to deal > with impulse noise, where you simply cut out a short section of signal > around the noise pulse. > From ea3in at yahoo.com Sat Jan 12 12:59:32 2019 From: ea3in at yahoo.com (Marcel Jorba) Date: Sat, 12 Jan 2019 17:59:32 +0000 (UTC) Subject: [Elecraft] KPA500 & Drake TR7 References: <246829685.18794704.1547315972097.ref@mail.yahoo.com> Message-ID: <246829685.18794704.1547315972097@mail.yahoo.com> Greetings from Barcelona I have here a K3-KPA500 setup that runs great I also have a TR7 and I am thinking about using it together with the KPA500?The obvious problem: The TR7 delivers a lot of watts (200 pep). Is it an idea to discard? Or is there any reasonable approach to? ALC control is not a good idea I think As an alternative (500-1000 W), is there any small (in size) linear to consider? I don't want to go back to the big tube linears. The KPA500 is great for what I want to have here. 73s de Marcel - EA3IN From rmcgraw at blomand.net Sat Jan 12 13:13:37 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sat, 12 Jan 2019 12:13:37 -0600 Subject: [Elecraft] KPA500 & Drake TR7 In-Reply-To: <246829685.18794704.1547315972097@mail.yahoo.com> References: <246829685.18794704.1547315972097.ref@mail.yahoo.com> <246829685.18794704.1547315972097@mail.yahoo.com> Message-ID: <60aa35e8-3997-8724-b6bc-ad63b080ad6f@blomand.net> If you can run 200 watts PEP with the TR7, why run a 500 watt amp???? Otherwise, you'll need a 10dB attenuator between the TR7 and the KPA500.? Hence turn 180 watts of RF from the TR7 into heat as it takes only about 20 watts to drive the KPA500 to rated output. 73 Bob, K4TAX On 1/12/2019 11:59 AM, Marcel Jorba via Elecraft wrote: > Greetings from Barcelona > I have here a K3-KPA500 setup that runs great > I also have a TR7 and I am thinking about using it together with the KPA500?The obvious problem: The TR7 delivers a lot of watts (200 pep). > Is it an idea to discard? Or is there any reasonable approach to? ALC control is not a good idea I think > As an alternative (500-1000 W), is there any small (in size) linear to consider? I don't want to go back to the big tube linears. The KPA500 is great for what I want to have here. > 73s de Marcel - EA3IN > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From royord at gmail.com Sat Jan 12 13:21:04 2019 From: royord at gmail.com (Kevin F.) Date: Sat, 12 Jan 2019 11:21:04 -0700 (MST) Subject: [Elecraft] KX3 RX I/Q testing In-Reply-To: <23AD8DC5-567D-42F4-B873-AF2D8A598EA0@liberty.edu> References: <1546745709079-0.post@n2.nabble.com> <1547097889570-0.post@n2.nabble.com> <1547240190852-0.post@n2.nabble.com> <95EB2E35-76C5-4F78-BAB2-6C95C5B385F0@widomaker.com> <1547279403303-0.post@n2.nabble.com> <23AD8DC5-567D-42F4-B873-AF2D8A598EA0@liberty.edu> Message-ID: <1547317264363-0.post@n2.nabble.com> Thanks for the input I'm using the suggested iMic which does have a line input and a mic input. I'm beginning to believe that it really is that the radio is not working correctly. I'm going to reach out elecraft directly to see what I can do without sending the radio to them for the fact that I'm using it for my CWA class. -- Sent from: http://elecraft.365791.n2.nabble.com/ From otagiri at gmx.com Sat Jan 12 13:33:45 2019 From: otagiri at gmx.com (bp) Date: Sat, 12 Jan 2019 13:33:45 -0500 Subject: [Elecraft] KPA500 & Drake TR7 In-Reply-To: <246829685.18794704.1547315972097@mail.yahoo.com> References: <246829685.18794704.1547315972097.ref@mail.yahoo.com> <246829685.18794704.1547315972097@mail.yahoo.com> Message-ID: <76ca8445-bc5b-0ceb-1445-e4819260540e@gmx.com> Hello EA3IN, There is a 1 kilowatt solid state amplifier, using NXP 188 final power transistors, built in England. Please see LinearAmp company, model Gemini HF-1K amplifier.? I believe that DXshop is the vendor.? Regards, bp.? K2AYA. On 1/12/19 12:59 PM, Marcel Jorba via Elecraft wrote: > Greetings from Barcelona > I have here a K3-KPA500 setup that runs great > I also have a TR7 and I am thinking about using it together with the KPA500?The obvious problem: The TR7 delivers a lot of watts (200 pep). > Is it an idea to discard? Or is there any reasonable approach to? ALC control is not a good idea I think > As an alternative (500-1000 W), is there any small (in size) linear to consider? I don't want to go back to the big tube linears. The KPA500 is great for what I want to have here. > 73s de Marcel - EA3IN > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to otagiri at gmx.com From donwilh at embarqmail.com Sat Jan 12 13:56:20 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sat, 12 Jan 2019 13:56:20 -0500 Subject: [Elecraft] KPA500 & Drake TR7 In-Reply-To: <246829685.18794704.1547315972097@mail.yahoo.com> References: <246829685.18794704.1547315972097.ref@mail.yahoo.com> <246829685.18794704.1547315972097@mail.yahoo.com> Message-ID: <24ad3278-178e-e2b1-a139-cac80ce0ccbc@embarqmail.com> Marcel, Can you add a "Power Control" to the TR7? It may be as easy as applying a constant negative voltage to the ALC input. That constant ALC voltage will not cause the problems encountered when using the dynamic ALC voltage that is applied from the amplifier. 73, Don W3FPR On 1/12/2019 12:59 PM, Marcel Jorba via Elecraft wrote: > Greetings from Barcelona > I have here a K3-KPA500 setup that runs great > I also have a TR7 and I am thinking about using it together with the KPA500?The obvious problem: The TR7 delivers a lot of watts (200 pep). > Is it an idea to discard? Or is there any reasonable approach to? ALC control is not a good idea I think > As an alternative (500-1000 W), is there any small (in size) linear to consider? I don't want to go back to the big tube linears. The KPA500 is great for what I want to have here. > 73s de Marcel - EA3IN From f.gentile1 at gmail.com Sat Jan 12 14:16:53 2019 From: f.gentile1 at gmail.com (Francesco Gentile) Date: Sat, 12 Jan 2019 20:16:53 +0100 Subject: [Elecraft] Francesco Gentile: Unsubscribe me to Elecraft mailing list Message-ID: Please Unsubscribe me to the Elecraft mailing list. Thank You very much. Francesco Gentile I2MKS, Milano,. Italy email: f.gentile1 at gmail.com From n6kr at elecraft.com Sat Jan 12 15:08:37 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Sat, 12 Jan 2019 12:08:37 -0800 Subject: [Elecraft] New DSP features? ... thanks In-Reply-To: <9492b1f5-5b7b-09b7-43d5-2ef9a6393393@cis-broadband.com> References: <5149CB54-CB9B-4B0A-A4F7-C83B7ADE0F05@elecraft.com> <9492b1f5-5b7b-09b7-43d5-2ef9a6393393@cis-broadband.com> Message-ID: <201408B6-8705-4C8D-BCCE-3375541AE179@elecraft.com> Thanks for all the many great suggestions and digressions, folks. Sorry I can't respond to all of them right away. My favorite so far is the request for Semantic Filtering Mode (SFM), which "might, with skillful adjustment, suppress political commentary from 75 meters." Our DSP IC does include odd/even partisan check bits, so this is a SMOP. Runner-up is a proposal for auto-detection of unattended FT8 transmissions, i.e. the "No One's Home AlarM" (NOHAM). Feel free to pile on, at least until Eric puts the hammer down. 73, Wayne N6KR From ebasilier at cox.net Sat Jan 12 15:11:07 2019 From: ebasilier at cox.net (Erik Basilier) Date: Sat, 12 Jan 2019 13:11:07 -0700 Subject: [Elecraft] Query for new DSP features In-Reply-To: References: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> <255e1008-3eb0-1fda-0856-79498664fbd4@gmail.com> Message-ID: <000001d4aab2$f49a71d0$ddcf5570$@cox.net> The noise level at my QTH is not nearly as bad as many of you have. The K3 S-meter tends to read around S4 on the background noise noise (SSB bandwidth, 20m preamp off, atten off). When it comes to engaging NR, like many others I have in the past tended to crank up the aggressiveness etc and noted a loss of apparent volume on the wanted signal, and apparent loss of the higher frequency voice components. I have compensated by cranking up the volume and widening the passband (which helped little as the received station had insufficient boost of highs). I have admired the apparently better results from other DSP implementations such as BHI and other radios. Lately I have modified my approach to using the K3 DSP, and found much better results. For ssb I now have NR engaged full time and like it. The setting is the least aggressive possible: F1-1. I used to have the impression that this setting did little to help, but I have changed my opinion. The sound with this weak NR on now seems very normal and comfortably intelligible. If I turn NR off, I can still read the signal, but it sounds harsh and tiring. I can't say the NR makes an unreadable signal readable, but it makes the copy more comfortable. My old brain seems to, slowly, adjust its own filtering to fit what is being heard, not just to focus on the wanted cw signal in a wider passband, but also when listening to voice when switching between NR on/off. This may be just my speculation, but subjectively, even with no radio involved, I seem to need an adjustment period also when listening to different adult voices, and especially when going between an adult voice and that of a small child. The existing K3 DSP seems to be optimized based on objectively measurable criteria that are somewhat at odds with the strange workings of the human auditory system. Perhaps the addition of a tone control that alters the low/high tonal balance would be a helpful new resource for those who feel the NR makes signals sound weak or too bassy. The tone control setting could be automatically engaged with an emphasis on the highs when NR is engaged. It could also be helpful as a manual control for adapting to stations that have not adjusted their transmit equalizer to fit the operator's voice. Besides a low/high tilt, a peak/notch function might be helpful. 73, Erik K7TV -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Walter Underwood Sent: Saturday, January 12, 2019 9:21 AM To: Elecraft Reflector Reflector Subject: Re: [Elecraft] Query for new DSP features Sorry, KX3. Though I think the K3 and KX2 use similar algorithms. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 11, 2019, at 8:53 PM, John Evans wrote: > > And yet, I have no idea which Elecraft rig you are referring to here. Drives us K1, K2, KX3 owners crazy. > > 73 - john - n0hj > > On 1/11/2019 9:49 PM, Walter Underwood wrote: >> It would be really great if the AF gain was automatically to keep the audio roughly level when NR is engaged. This drives me nuts, always riding the gain back and forth. I?m sure the gain adjustment would be different for different conditions, but at least get close. >> >> wunder >> K6WRU >> Walter Underwood >> CM87wj >> http://observer.wunderwood.org/ (my blog) >> >>> On Jan 11, 2019, at 8:38 PM, Mike Lichtman via Elecraft wrote: >>> >>> Wayne, >>> I would like to see an improved Noise Reduction that doesn?t >>> lower the volume or distort as much. Also the digital mode decode has never really worked well for me and, yes, I read the manual about using it. Could you have the digital choices RTTY, PSK31, etc. instead of the current settings like FSK, data, etc? >>> Pie in the sky thought ? Having the radio identify the type of >>> digital signal being received with a word in the display and >>> automatically change modes/settings to accommodate it. 73 Mike >>> KF6KXG > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to > wunder at wunderwood.org ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ebasilier at cox.net From ghyoungman at gmail.com Sat Jan 12 16:03:07 2019 From: ghyoungman at gmail.com (Grant Youngman) Date: Sat, 12 Jan 2019 16:03:07 -0500 Subject: [Elecraft] New DSP features? ... thanks In-Reply-To: <201408B6-8705-4C8D-BCCE-3375541AE179@elecraft.com> References: <5149CB54-CB9B-4B0A-A4F7-C83B7ADE0F05@elecraft.com> <9492b1f5-5b7b-09b7-43d5-2ef9a6393393@cis-broadband.com> <201408B6-8705-4C8D-BCCE-3375541AE179@elecraft.com> Message-ID: I love that one. Along the same lines, a broad brick-wall notch that auto-detects the recurring clown show on 7200 KHz would be a welcome addition ... especially if it could auto-suppress music. Sent from my iPhone > > My favorite so far is the request for Semantic Filtering Mode (SFM), which "might, with skillful adjustment, suppress political commentary from 75 meters." Our DSP IC does include odd/even partisan check bits, so this is a SMOP. > > From ny9h at arrl.net Sat Jan 12 16:15:35 2019 From: ny9h at arrl.net (Bill Steffey) Date: Sat, 12 Jan 2019 16:15:35 -0500 Subject: [Elecraft] Query for new DSP features In-Reply-To: <000001d4aab2$f49a71d0$ddcf5570$@cox.net> References: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> <255e1008-3eb0-1fda-0856-79498664fbd4@gmail.com> <000001d4aab2$f49a71d0$ddcf5570$@cox.net> Message-ID: <726db45c-7270-6929-38ee-ed87b5bf9f23@arrl.net> forty years in the audio business have allowed me to hear some of the best and worst audio/\ I bought clear speech before and after Bob tired selling it, and two others before finding the BHI product series from England. Some how their algorithm, to me at least, does the least harm to human voice when engaging the NR function. With both a 7800 and K3 I ended up with their dual channel NR with EQ. I did not want or need the EQ, but wanted the two channels for the dual receiver sets. I use a large Microham to switch the audio around feeding the BHIs. Graham at BHI explained their algorithm to me at Dayton, and sounded somewhat patent protected. I had expected, when the K3 upgrades came along with the additional set of settings for the NR I could delete the BHI. did not happen. Amazing how a pile of 1s & 0s can make such a difference.And I somehow it passes CW. picky picky picky... I know . From otagiri at gmx.com Sat Jan 12 16:29:45 2019 From: otagiri at gmx.com (bp) Date: Sat, 12 Jan 2019 16:29:45 -0500 Subject: [Elecraft] un-subscribe Message-ID: Hello Elecraft mailing list, Thank you for your mailing list and the good information I received.? However, please un-subscribe me from the mailing list.?? Regards, bp.? K2AYA From donwilh at embarqmail.com Sat Jan 12 16:53:21 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sat, 12 Jan 2019 16:53:21 -0500 Subject: [Elecraft] New DSP features? ... thanks In-Reply-To: References: <5149CB54-CB9B-4B0A-A4F7-C83B7ADE0F05@elecraft.com> <9492b1f5-5b7b-09b7-43d5-2ef9a6393393@cis-broadband.com> <201408B6-8705-4C8D-BCCE-3375541AE179@elecraft.com> Message-ID: Grant, Just turn the VFO knob! It works. 73, Don W3FPR On 1/12/2019 4:03 PM, Grant Youngman wrote: > I love that one. Along the same lines, a broad brick-wall notch that auto-detects the recurring clown show on 7200 KHz would be a welcome addition ... especially if it could auto-suppress music. > From donwilh at embarqmail.com Sat Jan 12 16:58:19 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sat, 12 Jan 2019 16:58:19 -0500 Subject: [Elecraft] un-subscribe In-Reply-To: References: Message-ID: <708da0b9-6c03-395d-3d75-18d2bdc3efeb@embarqmail.com> bp, We on the list are just users like you, and we cannot unsubscribe anyone. You will have to unsubscribe yourself. Go to the "Home:" link at the bottom of any posting and sign in to unsubscribe or change your settings. If you have trouble, email moderator at elecraft.com and ask for assistance. 73, Don W3FPR On 1/12/2019 4:29 PM, bp wrote: > Hello Elecraft mailing list, > > Thank you for your mailing list and the good information > > I received.? However, please un-subscribe me from the > > mailing list.?? Regards, bp.? K2AYA > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com From xdavid at cis-broadband.com Sat Jan 12 17:06:13 2019 From: xdavid at cis-broadband.com (David Gilbert) Date: Sat, 12 Jan 2019 15:06:13 -0700 Subject: [Elecraft] New DSP Idea Message-ID: I know Wayne requested direct replies to his query and I've already done that, but I have a serious suggestion and I'm curious if others here would be interested.? Here it is: === The two receivers in a K3 or K3s can be phase locked for diversity reception, and the new synths preserve that phase lock even with a change in frequency.? Since the relative phase of an incoming signal presented to the two receivers is preserved during down conversion, it is possible to capture that phase difference even in the audio chain.? Once that phase difference is known, it should be possible to: 1.? Display the difference.? This would allow a user to put up two vertical sense antennas to determine the azimuth of an incoming signal (albeit with a potential mirror image uncertainty).? Or put up two horizontal sense antennas to display the arrival angle of an incoming signal. 2.? Better yet, it should be possible to adjust the relative phase and amplitude of an incoming signal from the two antennas, then either add them or subtract one from the other to either peak a desired signal or null an interfering signal (including a source of noise, man made or atmospheric). === There are commercially available pieces of hardware from various ham suppliers that perform this same function except at RF (which is more difficult), and they cost several hundreds of dollars.? It seems to me that any K3s, or K3 with the new synths, should be able to do the same thing virtually for free. 73, Dave?? AB7E From donwilh at embarqmail.com Sat Jan 12 17:19:46 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sat, 12 Jan 2019 17:19:46 -0500 Subject: [Elecraft] New DSP Idea In-Reply-To: References: Message-ID: Dave, Using Diversity Receive, the human brain does that automatically (but not with the numbers). You can sort out both signals and automatically pick the best one or a blend of the two. This is an unconscious process. The name of the game is communications, not looking at numbers representing the two signals or the difference between them. To analyze and display the differences may be useful in a lab setting, but not of much use for quickly picking the best path for a QSO. Just my opinion. 73, Don W3FPR On 1/12/2019 5:06 PM, David Gilbert wrote: > > I know Wayne requested direct replies to his query and I've already done > that, but I have a serious suggestion and I'm curious if others here > would be interested.? Here it is: > > === > The two receivers in a K3 or K3s can be phase locked for diversity > reception, and the new synths preserve that phase lock even with a > change in frequency.? Since the relative phase of an incoming signal > presented to the two receivers is preserved during down conversion, it > is possible to capture that phase difference even in the audio chain. > Once that phase difference is known, it should be possible to: > > 1.? Display the difference.? This would allow a user to put up two > vertical sense antennas to determine the azimuth of an incoming signal > (albeit with a potential mirror image uncertainty).? Or put up two > horizontal sense antennas to display the arrival angle of an incoming > signal. > > 2.? Better yet, it should be possible to adjust the relative phase and > amplitude of an incoming signal from the two antennas, then either add > them or subtract one from the other to either peak a desired signal or > null an interfering signal (including a source of noise, man made or > atmospheric). > === > > There are commercially available pieces of hardware from various ham > suppliers that perform this same function except at RF (which is more > difficult), and they cost several hundreds of dollars.? It seems to me > that any K3s, or K3 with the new synths, should be able to do the same > thing virtually for free. > > 73, > Dave?? AB7E > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com From nr4c at widomaker.com Sat Jan 12 17:59:12 2019 From: nr4c at widomaker.com (Nr4c) Date: Sat, 12 Jan 2019 17:59:12 -0500 Subject: [Elecraft] New DSP Idea In-Reply-To: References: Message-ID: <43B674E4-68DE-49BF-BBED-7B9CE7A46F7A@widomaker.com> I?m not an engineer but from the discussions here in the past, in diversity mode, the VFOs are not ?phase locked? but actually driven by the same synthesizer, so they both get the very same frequency info. Thus output the same frequency. Sent from my iPhone ...nr4c. bill > On Jan 12, 2019, at 5:06 PM, David Gilbert wrote: > > > I know Wayne requested direct replies to his query and I've already done that, but I have a serious suggestion and I'm curious if others here would be interested. Here it is: > > === > The two receivers in a K3 or K3s can be phase locked for diversity reception, and the new synths preserve that phase lock even with a change in frequency. Since the relative phase of an incoming signal presented to the two receivers is preserved during down conversion, it is possible to capture that phase difference even in the audio chain. Once that phase difference is known, it should be possible to: > > 1. Display the difference. This would allow a user to put up two vertical sense antennas to determine the azimuth of an incoming signal (albeit with a potential mirror image uncertainty). Or put up two horizontal sense antennas to display the arrival angle of an incoming signal. > > 2. Better yet, it should be possible to adjust the relative phase and amplitude of an incoming signal from the two antennas, then either add them or subtract one from the other to either peak a desired signal or null an interfering signal (including a source of noise, man made or atmospheric). > === > > There are commercially available pieces of hardware from various ham suppliers that perform this same function except at RF (which is more difficult), and they cost several hundreds of dollars. It seems to me that any K3s, or K3 with the new synths, should be able to do the same thing virtually for free. > > 73, > Dave AB7E > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From donwilh at embarqmail.com Sat Jan 12 18:20:19 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sat, 12 Jan 2019 18:20:19 -0500 Subject: [Elecraft] New DSP Idea In-Reply-To: <43B674E4-68DE-49BF-BBED-7B9CE7A46F7A@widomaker.com> References: <43B674E4-68DE-49BF-BBED-7B9CE7A46F7A@widomaker.com> Message-ID: Bill, When they are driven from the same synthesizer, they are indeed "phase locked". 73, Don W3FPR On 1/12/2019 5:59 PM, Nr4c wrote: > I?m not an engineer but from the discussions here in the past, in diversity mode, the VFOs are not ?phase locked? but actually driven by the same synthesizer, so they both get the very same frequency info. Thus output the same frequency. > From ebasilier at cox.net Sat Jan 12 19:54:47 2019 From: ebasilier at cox.net (Erik Basilier) Date: Sat, 12 Jan 2019 17:54:47 -0700 Subject: [Elecraft] FS: BHI Message-ID: <000001d4aada$951f35b0$bf5da110$@cox.net> On the subject of BHI, I once had an ambitious project to build a switch box incorporating some SO2R functions plus two BHI DSP single channel units. Before I had finished wiring the unit (starting with just one BHI channel unit) my understanding of SO2R requirements grew to the point that I abandoned my build and went with a commercial MicroHam SO2R box. At this point I am no longer motivated to get a second BHI unit and deploy them. If anyone is inerested in buying the one I have, please email me directly and we can discuss a deal. To be clear: This is a unit for integration in other equipment, and not a standalone box ready to place on your desk. It does incorporate an AF power amp for driving a speaker, and the input may be driven from the radio speaker output. 73, Erik K7TV -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Erik Basilier Sent: Saturday, January 12, 2019 1:11 PM To: 'Walter Underwood' ; 'Elecraft Reflector Reflector' Subject: Re: [Elecraft] Query for new DSP features The noise level at my QTH is not nearly as bad as many of you have. The K3 S-meter tends to read around S4 on the background noise noise (SSB bandwidth, 20m preamp off, atten off). When it comes to engaging NR, like many others I have in the past tended to crank up the aggressiveness etc and noted a loss of apparent volume on the wanted signal, and apparent loss of the higher frequency voice components. I have compensated by cranking up the volume and widening the passband (which helped little as the received station had insufficient boost of highs). I have admired the apparently better results from other DSP implementations such as BHI and other radios. Lately I have modified my approach to using the K3 DSP, and found much better results. For ssb I now have NR engaged full time and like it. The setting is the least aggressive possible: F1-1. I used to have the impression that this setting did little to help, but I have changed my opinion. The sound with this weak NR on now seems very normal and comfortably intelligible. If I turn NR off, I can still read the signal, but it sounds harsh and tiring. I can't say the NR makes an unreadable signal readable, but it makes the copy more comfortable. My old brain seems to, slowly, adjust its own filtering to fit what is being heard, not just to focus on the wanted cw signal in a wider passband, but also when listening to voice when switching between NR on/off. This may be just my speculation, but subjectively, even with no radio involved, I seem to need an adjustment period also when listening to different adult voices, and especially when going between an adult voice and that of a small child. The existing K3 DSP seems to be optimized based on objectively measurable criteria that are somewhat at odds with the strange workings of the human auditory system. Perhaps the addition of a tone control that alters the low/high tonal balance would be a helpful new resource for those who feel the NR makes signals sound weak or too bassy. The tone control setting could be automatically engaged with an emphasis on the highs when NR is engaged. It could also be helpful as a manual control for adapting to stations that have not adjusted their transmit equalizer to fit the operator's voice. Besides a low/high tilt, a peak/notch function might be helpful. 73, Erik K7TV e delivered to ebasilier at cox.net From xdavid at cis-broadband.com Sat Jan 12 20:06:29 2019 From: xdavid at cis-broadband.com (David Gilbert) Date: Sat, 12 Jan 2019 18:06:29 -0700 Subject: [Elecraft] New DSP Idea In-Reply-To: References: Message-ID: Don, No, it isn't the same at all and I don't understand why you think it is.? Your brain may be able to discern differences in phase and try to focus in on one signal versus others, but it isn't going to do any of these things: 1.? Actually amplify a desired signal (probably 2 to 3 db) at the expense of other signals or generalized noise from other directions.? Hams who put up phased verticals don't do it strictly for the transmit gain. 2.? Totally null out an offending signal or noise from a particular direction.? Your brain most certainly can't do this. 3.? Give you angle measurements in degrees. As I said, I consider the add/subtract ability (#1 and #2) to be more useful than the simple display of the phase difference (#3), but we could have both. Check this out .... https://tinyurl.com/ydfvcauz It's a hardware implementation of pretty much the same as I'm proposing Elecraft do in software, and the hardware version goes for $750. Dave?? AB7E On 1/12/2019 3:19 PM, Don Wilhelm wrote: > Dave, > > Using Diversity Receive, the human brain does that automatically (but > not with the numbers).? You can sort out both signals and > automatically pick the best one or a blend of the two.? This is an > unconscious process. > > The name of the game is communications, not looking at numbers > representing the two signals or the difference between them. > > To analyze and display the differences may be useful in a lab setting, > but not of much use for quickly picking the best path for a QSO. > > Just my opinion. > > 73, > Don W3FPR > > On 1/12/2019 5:06 PM, David Gilbert wrote: >> >> I know Wayne requested direct replies to his query and I've already >> done that, but I have a serious suggestion and I'm curious if others >> here would be interested.? Here it is: >> >> === >> The two receivers in a K3 or K3s can be phase locked for diversity >> reception, and the new synths preserve that phase lock even with a >> change in frequency.? Since the relative phase of an incoming signal >> presented to the two receivers is preserved during down conversion, >> it is possible to capture that phase difference even in the audio >> chain. Once that phase difference is known, it should be possible to: >> >> 1.? Display the difference.? This would allow a user to put up two >> vertical sense antennas to determine the azimuth of an incoming >> signal (albeit with a potential mirror image uncertainty).? Or put up >> two horizontal sense antennas to display the arrival angle of an >> incoming signal. >> >> 2.? Better yet, it should be possible to adjust the relative phase >> and amplitude of an incoming signal from the two antennas, then >> either add them or subtract one from the other to either peak a >> desired signal or null an interfering signal (including a source of >> noise, man made or atmospheric). >> === >> >> There are commercially available pieces of hardware from various ham >> suppliers that perform this same function except at RF (which is more >> difficult), and they cost several hundreds of dollars.? It seems to >> me that any K3s, or K3 with the new synths, should be able to do the >> same thing virtually for free. >> >> 73, >> Dave?? AB7E >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donwilh at embarqmail.com > From sashangus at yahoo.com Sat Jan 12 20:30:40 2019 From: sashangus at yahoo.com (Robert Brown) Date: Sat, 12 Jan 2019 20:30:40 -0500 Subject: [Elecraft] KXV3a for sale Message-ID: <44340AED-EF2C-4946-B90D-3533C4A70626@yahoo.com> KXV3a, recently replaced by KXV3b - $85/shipped. Bob Brown, N1CVX Sent from my iPad From n4zr at comcast.net Sat Jan 12 20:50:38 2019 From: n4zr at comcast.net (N4ZR) Date: Sat, 12 Jan 2019 20:50:38 -0500 Subject: [Elecraft] KPA-1500 kudos Message-ID: As such things seem to go in my life, I received my new KPA-1500 the day before the NAQP, which has a 100-watt limit.? Imagine my delight to discover that the ATU can operate with the amp on standby. Using this feature, I was able to feed my 40m 1/2 wave sloper on 80 meters, in place of my Carolina windom, which had come down .? Bravo, Elecraft! -- 73, Pete N4ZR Check out the Reverse Beacon Network at , now spotting RTTY activity worldwide. For spots, please use your favorite "retail" DX cluster. From mspmail2 at gmail.com Sat Jan 12 22:18:05 2019 From: mspmail2 at gmail.com (Mike Parkes) Date: Sat, 12 Jan 2019 19:18:05 -0800 Subject: [Elecraft] AX1 antenna - indoor performance initial results Message-ID: Hello everyone in Elecraft land! I just wanted to share my initial results with the AX1 with my KX3 and I am happy to report contacts on 20 meters at 2 watts on the AX1 from indoors, the antenna just sitting on the table here in the shack! The contacts were on wspr mode and I was getting out, but I have yet to decode anything. But I know the little AX1 can be heard so I am confident reception would be there if the environment was a little quieter! I have rfi/qrm noise issues in the shack here so reception is always a challenge. Just wanted to share that, this little antenna is very cool. 73's Mike AB7RU / Spokane, WA From mpridesti at yahoo.com Sat Jan 12 22:40:37 2019 From: mpridesti at yahoo.com (Mpridesti) Date: Sat, 12 Jan 2019 22:40:37 -0500 Subject: [Elecraft] Battery Low K3 Message-ID: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> Just saw a message pop up saying Battery Low Assume this is the internal battery requires replacement? Regards, Mark, K1RX From kevinr at coho.net Sat Jan 12 22:41:11 2019 From: kevinr at coho.net (kevinr) Date: Sat, 12 Jan 2019 19:41:11 -0800 Subject: [Elecraft] Elecraft CW Net Announcement Message-ID: Good Evening, ?? The small sunspot of last week has crossed over the limb of the sun.? Some auroral activity so there are ions out there. Without the storms of summer it should be pretty quiet.? My noise floor is normally low, somewhere below S1.? No nearby neighbors, no electric fences, and underground power lines.? My only possible interference is from the antenna farm about 1/2 a mile away.? An aircraft beacon, with various amateur, state police, forestry, and fire repeaters.? The antenna which sends me Internet is the one to the east.? There may be an FM broadcast band repeater too, I'm not sure.? Oh and a cellular telephone repeater.? All of them live above 20 meters.? I don't think there is a beacon for mariners, I am not that close to the ocean but the Columbia River is not that far to my north or east.? However, I've never heard any interference from any of those antennas on the frequencies I use. ?? The mild weather has the buds swelling and a few sprouts popping up.? We had two inches of snow Monday morning but the temperatures have risen into the low fifties.? I am waiting for the other shoe to drop. Please join us tomorrow on: 14050 kHz at 2200z Sunday? (2 PM PST Sunday) ?7047 kHz at 0000z Monday? (4 PM PST Sunday) 73, ?? Kevin. KD5ONS - From ch at murgatroid.com Sat Jan 12 22:48:52 2019 From: ch at murgatroid.com (Christopher Hoover) Date: Sat, 12 Jan 2019 19:48:52 -0800 Subject: [Elecraft] Query for new DSP features In-Reply-To: References: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> Message-ID: On Fri, Jan 11, 2019 at 8:50 PM Walter Underwood wrote: > It would be really great if the AF gain was automatically to keep the > audio roughly level when NR is engaged. This drives me nuts, always riding > the gain back and forth. I?m sure the gain adjustment would be different > for different conditions, but at least get close. > +1 to this From norrislawfirm2 at gmail.com Sat Jan 12 23:30:12 2019 From: norrislawfirm2 at gmail.com (Eric Norris) Date: Sat, 12 Jan 2019 20:30:12 -0800 Subject: [Elecraft] New DSP features? ... thanks In-Reply-To: <201408B6-8705-4C8D-BCCE-3375541AE179@elecraft.com> References: <5149CB54-CB9B-4B0A-A4F7-C83B7ADE0F05@elecraft.com> <9492b1f5-5b7b-09b7-43d5-2ef9a6393393@cis-broadband.com> <201408B6-8705-4C8D-BCCE-3375541AE179@elecraft.com> Message-ID: Might I suggest a filter that translates a bug user who sends at 15wpm, but the dots are set to 35wpm. The filter would briefly store the cw, correct the timing, and then pass it through the audio stages. Call it the VibroDummy, or VD1 filter setting. Another one would filter out the long "annnnd uuuuuhhhhh..." of VOX users who only transmit 50% or less of transmit time as intelligible speech, remove the non data periods, then pass the compressed version on. Call it the VoxDummy, or VD2 filter. Finally, introduce NR so sophisticated it automatically finds the correct tuning soloution, requiring another 4 cu ft of room inside the K3 for microprocessers and memory. Release it in a bloated, gigantic case, add 50 controls to the front panel, and call it a K4, thereby silencing two sets of critics who post--but do not read--on the reflector. 73 Eric WD6DBM On Sat, Jan 12, 2019, 12:08 PM Wayne Burdick Thanks for all the many great suggestions and digressions, folks. Sorry I > can't respond to all of them right away. > > My favorite so far is the request for Semantic Filtering Mode (SFM), which > "might, with skillful adjustment, suppress political commentary from 75 > meters." Our DSP IC does include odd/even partisan check bits, so this is a > SMOP. > > Runner-up is a proposal for auto-detection of unattended FT8 > transmissions, i.e. the "No One's Home AlarM" (NOHAM). > > Feel free to pile on... > From donwilh at embarqmail.com Sat Jan 12 23:41:44 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sat, 12 Jan 2019 23:41:44 -0500 Subject: [Elecraft] Battery Low K3 In-Reply-To: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> Message-ID: I assume you mean the KX3. The K3 has no internal battery. If you have Ni-MH batteries, they need recharging. If you are using Alkaline batteries, they need to be replaced. I assume you have set the menu BAT MIN for the type of battery you are using. See the KX3 manual page 36 of the manual. Set BAT MIN for the type batteries used. The default of 10 volts is good for external Lead Acid batteries. All other types require a different setting. 73, Don W3FPR On 1/12/2019 10:40 PM, Mpridesti via Elecraft wrote: > Just saw a message pop up saying Battery Low > > Assume this is the internal battery requires replacement? > From ghyoungman at gmail.com Sat Jan 12 23:46:04 2019 From: ghyoungman at gmail.com (Grant Youngman) Date: Sat, 12 Jan 2019 23:46:04 -0500 Subject: [Elecraft] Battery Low K3 In-Reply-To: References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> Message-ID: <9D18BF9F-3575-4B1E-BFD0-340A85B31E4E@gmail.com> Actually it does. I think it keeps the clock running ? Grant NQ5T K3 #2091 KX3 #8342 > > > I assume you mean the KX3. The K3 has no internal battery. > From rv6amark at yahoo.com Sat Jan 12 23:49:34 2019 From: rv6amark at yahoo.com (Mark) Date: Sat, 12 Jan 2019 20:49:34 -0800 Subject: [Elecraft] New DSP features? ... thanks In-Reply-To: Message-ID: Eric? Best post of the year!!!? I will be chuckling at that all night; yet, you delivered exactly what Wayne asked for and we all wish our radios had.? You even gave the K4 speculators something to chew on for a while.? I will go to the gym tomorrow to start building my arms and legs to handle my new KX3ss!? The "ss" is for supersized! Great stuff! MarkKE6BB -------- Original message --------From: Eric Norris Date: 1/12/19 8:30 PM (GMT-08:00) To: Wayne Burdick Cc: "elecraft at mailman qth. net" , KX3 at yahoogroups.com Subject: Re: [Elecraft] New DSP features? ... thanks Might I suggest a filter that translates a bug user who sends at 15wpm, but the dots are set to 35wpm.? The filter would briefly store the cw, correct the timing, and then pass it through the audio stages.? Call it the VibroDummy, or VD1 filter setting. Another one would filter out the long "annnnd uuuuuhhhhh..." of VOX users who only transmit 50% or less of transmit time as intelligible speech, remove the non data periods, then pass the compressed version on.? Call it the VoxDummy, or VD2 filter. Finally, introduce NR so sophisticated it automatically finds the correct tuning soloution, requiring another 4 cu ft of room inside the K3 for microprocessers and memory.? Release it in a bloated, gigantic case, add 50 controls to the front panel, and call it a K4, thereby silencing two sets of critics who post--but do not read--on the reflector. 73 Eric WD6DBM On Sat, Jan 12, 2019, 12:08 PM Wayne Burdick Thanks for all the many great suggestions and digressions, folks. Sorry I > can't respond to all of them right away. > > My favorite so far is the request for Semantic Filtering Mode (SFM), which > "might, with skillful adjustment, suppress political commentary from 75 > meters." Our DSP IC does include odd/even partisan check bits, so this is a > SMOP. > > Runner-up is a proposal for auto-detection of unattended FT8 > transmissions, i.e. the "No One's Home AlarM" (NOHAM). > > Feel free to pile on... > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to rv6amark at yahoo.com From mpridesti at yahoo.com Sun Jan 13 00:01:40 2019 From: mpridesti at yahoo.com (Mpridesti) Date: Sun, 13 Jan 2019 00:01:40 -0500 Subject: [Elecraft] Battery Low K3 In-Reply-To: References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> Message-ID: <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> Don It is a K3. Bought it used and carries a low serial number. Never have changed the internal battery (over 8 years in my possession). Regards, Mark, K1RX > On Jan 12, 2019, at 11:41 PM, Don Wilhelm wrote: > > I assume you mean the KX3. The K3 has no internal battery. > > If you have Ni-MH batteries, they need recharging. If you are using Alkaline batteries, they need to be replaced. I assume you have set the menu BAT MIN for the type of battery you are using. See the KX3 manual page 36 of the manual. > > Set BAT MIN for the type batteries used. The default of 10 volts is good for external Lead Acid batteries. All other types require a different setting. > > 73, > Don W3FPR > >> On 1/12/2019 10:40 PM, Mpridesti via Elecraft wrote: >> Just saw a message pop up saying Battery Low >> Assume this is the internal battery requires replacement? From kevinr at coho.net Sun Jan 13 01:50:40 2019 From: kevinr at coho.net (kevinr) Date: Sat, 12 Jan 2019 22:50:40 -0800 Subject: [Elecraft] New DSP features? ... thanks In-Reply-To: References: <5149CB54-CB9B-4B0A-A4F7-C83B7ADE0F05@elecraft.com> <9492b1f5-5b7b-09b7-43d5-2ef9a6393393@cis-broadband.com> <201408B6-8705-4C8D-BCCE-3375541AE179@elecraft.com> Message-ID: <76c46c3b-e564-7f81-edfe-9b25e2a5b3ce@coho.net> Sounds like a project for a neural network.? A bit of AI which 'recognizes' patterns.? There would be ~ 40 outputs for letters, numbers, and symbols.? I am unsure of the number of inputs nor of the middle layer(s) of the net.? But that's just a bit of engineering. The training sets would consist of a large set of "Lake Erie swing music" and expert interpretations of it.? Find a large computer and spend a few weeks training the NN. There are some shortcuts I foresee.? Quite a few characters can't (?) be messed up by the misuse of a bug.? T, O, M, etc.? Those don't really need to go through the NN so you can save on the number of outputs and decrease the training time significantly. The neat things is once you've done all this work you can put the trained NN into a very small space of code.? And use a moderate number of processor cycles. Not quite DSP but AI is just another acronym :) ??? 73, ??????? Kevin.? KD5ONS - On 1/12/19 8:30 PM, Eric Norris wrote: > Might I suggest a filter that translates a bug user who sends at 15wpm, but > the dots are set to 35wpm. The filter would briefly store the cw, correct > the timing, and then pass it through the audio stages. Call it the > VibroDummy, or VD1 filter setting. > > Another one would filter out the long "annnnd uuuuuhhhhh..." of VOX users > who only transmit 50% or less of transmit time as intelligible speech, > remove the non data periods, then pass the compressed version on. Call it > the VoxDummy, or VD2 filter. > > Finally, introduce NR so sophisticated it automatically finds the correct > tuning soloution, requiring another 4 cu ft of room inside the K3 for > microprocessers and memory. Release it in a bloated, gigantic case, add 50 > controls to the front panel, and call it a K4, thereby silencing two sets > of critics who post--but do not read--on the reflector. > > 73 Eric WD6DBM > > On Sat, Jan 12, 2019, 12:08 PM Wayne Burdick >> Thanks for all the many great suggestions and digressions, folks. Sorry I >> can't respond to all of them right away. >> >> My favorite so far is the request for Semantic Filtering Mode (SFM), which >> "might, with skillful adjustment, suppress political commentary from 75 >> meters." Our DSP IC does include odd/even partisan check bits, so this is a >> SMOP. >> >> Runner-up is a proposal for auto-detection of unattended FT8 >> transmissions, i.e. the "No One's Home AlarM" (NOHAM). >> >> Feel free to pile on... >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to kevinr at coho.net > From frantz at pwpconsult.com Sun Jan 13 02:11:46 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Sat, 12 Jan 2019 23:11:46 -0800 Subject: [Elecraft] Battery Low K3 In-Reply-To: <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> Message-ID: I get that message when the main power supply for the radio is low. (I use a solar power with battery system most of the time.) Check your power supply. 73 Bill AE6JV On 1/13/19 at 9:01 PM, elecraft at mailman.qth.net (Mpridesti via Elecraft) wrote: >It is a K3. Bought it used and carries a low serial number. >Never have changed the internal battery (over 8 years in my possession). >... >> >>> On 1/12/2019 10:40 PM, Mpridesti via Elecraft wrote: >>> Just saw a message pop up saying Battery Low >>> Assume this is the internal battery requires replacement? ----------------------------------------------------------------------- Bill Frantz | I like the farmers' market | Periwinkle (408)356-8506 | because I can get fruits and | 16345 Englewood Ave www.pwpconsult.com | vegetables without stickers. | Los Gatos, CA 95032 From tc3n.sk at gmail.com Sun Jan 13 03:08:26 2019 From: tc3n.sk at gmail.com (Turkish Contest Team TC3N) Date: Sun, 13 Jan 2019 11:08:26 +0300 Subject: [Elecraft] New DSP Idea Message-ID: I am not an engineer but i agree with David. It is like DSA (digital subtraction angiography) tecnology. ( https://en.wikipedia.org/wiki/Digital_subtraction_angiography) I know that this technology is much useful for studing on medical images, So i understand that David has adviced such a same technique on the sounds like this. Why not? TA3ON, Salih Tolga Kutlu, Turkiye From jim at audiosystemsgroup.com Sun Jan 13 04:13:36 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Sun, 13 Jan 2019 01:13:36 -0800 Subject: [Elecraft] New DSP Idea In-Reply-To: References: Message-ID: <2ac15a1d-4a1f-dbf8-171b-593a4de9ab05@audiosystemsgroup.com> On 1/12/2019 2:06 PM, David Gilbert wrote: > This would allow a user to put up two vertical sense antennas to > determine the azimuth of an incoming signal (albeit with a potential > mirror image uncertainty).? Or put up two horizontal sense antennas to > display the arrival angle of an incoming signal. Unfortunately, the real world is far more complicated that this. What you describe can work for local sources, but propagated sources can take different paths, each introducing delays that can, for example, cause cancellation of multiple arrrivals at on antenna while reinforcing at the other. THIS is what causes selective fading, and is why diversity works! In other words, it's FAR more than one vertical antenna and one horizontal one. 73, Jim K9YC From donwilh at embarqmail.com Sun Jan 13 07:54:44 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 13 Jan 2019 07:54:44 -0500 Subject: [Elecraft] Battery Low K3 In-Reply-To: <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> Message-ID: <53950dff-d2a1-07ef-d237-0db2bda4c4fe@embarqmail.com> Mark, Then check the power supply voltage (Use the alternate VFB B display) and all connectors. That message has nothing to do with the RTC battery. There is no internal battery in the K3 other than the tiny RTC battery. 73, Don W3FPR On 1/13/2019 12:01 AM, Mpridesti wrote: > Don > > It is a K3. Bought it used and carries a low serial number. Never have changed the internal battery (over 8 years in my possession). > > Regards, > Mark, K1RX > > >> On Jan 12, 2019, at 11:41 PM, Don Wilhelm wrote: >> >> I assume you mean the KX3. The K3 has no internal battery. >> >> If you have Ni-MH batteries, they need recharging. If you are using Alkaline batteries, they need to be replaced. I assume you have set the menu BAT MIN for the type of battery you are using. See the KX3 manual page 36 of the manual. >> >> Set BAT MIN for the type batteries used. The default of 10 volts is good for external Lead Acid batteries. All other types require a different setting. >> >> 73, >> Don W3FPR >> >>> On 1/12/2019 10:40 PM, Mpridesti via Elecraft wrote: >>> Just saw a message pop up saying Battery Low >>> Assume this is the internal battery requires replacement? > From c-hawley at illinois.edu Sun Jan 13 08:58:10 2019 From: c-hawley at illinois.edu (hawley, charles j jr) Date: Sun, 13 Jan 2019 13:58:10 +0000 Subject: [Elecraft] Battery Low K3 In-Reply-To: <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> , <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> Message-ID: <26F8D053-648D-420C-90B1-2D1B5C275C8A@illinois.edu> Good to know it gives a warning before it goes flat and leaks! Chuck KE9UW c-hawley at illinois.edu Sent from my iPad > On Jan 12, 2019, at 11:01 PM, Mpridesti via Elecraft wrote: > > Don > > It is a K3. Bought it used and carries a low serial number. Never have changed the internal battery (over 8 years in my possession). > > Regards, > Mark, K1RX > > >> On Jan 12, 2019, at 11:41 PM, Don Wilhelm wrote: >> >> I assume you mean the KX3. The K3 has no internal battery. >> >> If you have Ni-MH batteries, they need recharging. If you are using Alkaline batteries, they need to be replaced. I assume you have set the menu BAT MIN for the type of battery you are using. See the KX3 manual page 36 of the manual. >> >> Set BAT MIN for the type batteries used. The default of 10 volts is good for external Lead Acid batteries. All other types require a different setting. >> >> 73, >> Don W3FPR >> >>> On 1/12/2019 10:40 PM, Mpridesti via Elecraft wrote: >>> Just saw a message pop up saying Battery Low >>> Assume this is the internal battery requires replacement? > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to c-hawley at illinois.edu From c-hawley at illinois.edu Sun Jan 13 09:02:03 2019 From: c-hawley at illinois.edu (hawley, charles j jr) Date: Sun, 13 Jan 2019 14:02:03 +0000 Subject: [Elecraft] Battery Low K3 In-Reply-To: <53950dff-d2a1-07ef-d237-0db2bda4c4fe@embarqmail.com> References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com>, <53950dff-d2a1-07ef-d237-0db2bda4c4fe@embarqmail.com> Message-ID: Oh rats...an RTC battery warning would have been a plus. Chuck KE9UW c-hawley at illinois.edu Sent from my iPad > On Jan 13, 2019, at 6:55 AM, Don Wilhelm wrote: > > Mark, > > Then check the power supply voltage (Use the alternate VFB B display) and all connectors. > That message has nothing to do with the RTC battery. > > There is no internal battery in the K3 other than the tiny RTC battery. > > 73, > Don W3FPR > >> On 1/13/2019 12:01 AM, Mpridesti wrote: >> Don >> >> It is a K3. Bought it used and carries a low serial number. Never have changed the internal battery (over 8 years in my possession). >> >> Regards, >> Mark, K1RX >> >> >>> On Jan 12, 2019, at 11:41 PM, Don Wilhelm wrote: >>> >>> I assume you mean the KX3. The K3 has no internal battery. >>> >>> If you have Ni-MH batteries, they need recharging. If you are using Alkaline batteries, they need to be replaced. I assume you have set the menu BAT MIN for the type of battery you are using. See the KX3 manual page 36 of the manual. >>> >>> Set BAT MIN for the type batteries used. The default of 10 volts is good for external Lead Acid batteries. All other types require a different setting. >>> >>> 73, >>> Don W3FPR >>> >>>> On 1/12/2019 10:40 PM, Mpridesti via Elecraft wrote: >>>> Just saw a message pop up saying Battery Low >>>> Assume this is the internal battery requires replacement? >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to c-hawley at illinois.edu From AB1DD at comcast.net Sun Jan 13 09:15:32 2019 From: AB1DD at comcast.net (Carl) Date: Sun, 13 Jan 2019 09:15:32 -0500 Subject: [Elecraft] K3 for sale Message-ID: <82180d36-3b96-6fa3-7102-aacd17fd4dec@comcast.net> I have decided to sell one of my K3's. So there is no confusion, it is a K3, late 3000 serial number. It is a 100w kit. Options include standard 2.7k filter, KDVR3 voice recorder, KXV3A interface (RX antenna, IF out and Xverter ), KAT3 antenna tuner (adds 2nd antenna input), power cable, and a spare KSYN3 board so a second receiver can be added. A new second receiver will come with an upgraded Synth board, and both synth boards need to be the same. You could add the new board for $280, or use the old ones until you wanted to upgrade. It also has the mod to be able to power a K-Pod from the front panel jack. Of course, spiral bound manual included, along with assembly instruction manual. The radio is in excellent like new condition. Hardly a scratch on the case. Lightly used and well taken care of, non smoking and pet free home. This would be a great starting point for someone looking for a radio to build up as they wanted.I'm asking $2000 shipped in the US. I could meet locally, (Burlington, Vt. area) and adjust the price. Please contact off list: AB1DD @ ARRL.net. (adjust the spaces!). -- Carl AB1DD Resistance is futile. (don't know about reactance, though) From hbjr at optilink.us Sun Jan 13 09:40:18 2019 From: hbjr at optilink.us (HB) Date: Sun, 13 Jan 2019 09:40:18 -0500 Subject: [Elecraft] New DSP features? ... thanks In-Reply-To: <76c46c3b-e564-7f81-edfe-9b25e2a5b3ce@coho.net> References: <5149CB54-CB9B-4B0A-A4F7-C83B7ADE0F05@elecraft.com> <9492b1f5-5b7b-09b7-43d5-2ef9a6393393@cis-broadband.com> <201408B6-8705-4C8D-BCCE-3375541AE179@elecraft.com> <76c46c3b-e564-7f81-edfe-9b25e2a5b3ce@coho.net> Message-ID: <93333653-86E7-4132-9037-E6207C4D9710@optilink.us> This thread is hilarious!!! There is an AI joke somewhere in here about a dummy load.... > On Jan 13, 2019, at 1:50 AM, kevinr wrote: > > Sounds like a project for a neural network. A bit of AI which 'recognizes' patterns. There would be ~ 40 outputs for letters, numbers, and symbols. I am unsure of the number of inputs nor of the middle layer(s) of the net. But that's just a bit of engineering. > > The training sets would consist of a large set of "Lake Erie swing music" and expert interpretations of it. Find a large computer and spend a few weeks training the NN. > > There are some shortcuts I foresee. Quite a few characters can't (?) be messed up by the misuse of a bug. T, O, M, etc. Those don't really need to go through the NN so you can save on the number of outputs and decrease the training time significantly. > > The neat things is once you've done all this work you can put the trained NN into a very small space of code. And use a moderate number of processor cycles. > > Not quite DSP but AI is just another acronym :) > > 73, > > Kevin. KD5ONS > > - > >> On 1/12/19 8:30 PM, Eric Norris wrote: >> Might I suggest a filter that translates a bug user who sends at 15wpm, but >> the dots are set to 35wpm. The filter would briefly store the cw, correct >> the timing, and then pass it through the audio stages. Call it the >> VibroDummy, or VD1 filter setting. >> >> Another one would filter out the long "annnnd uuuuuhhhhh..." of VOX users >> who only transmit 50% or less of transmit time as intelligible speech, >> remove the non data periods, then pass the compressed version on. Call it >> the VoxDummy, or VD2 filter. >> >> Finally, introduce NR so sophisticated it automatically finds the correct >> tuning soloution, requiring another 4 cu ft of room inside the K3 for >> microprocessers and memory. Release it in a bloated, gigantic case, add 50 >> controls to the front panel, and call it a K4, thereby silencing two sets >> of critics who post--but do not read--on the reflector. >> >> 73 Eric WD6DBM >> >>> On Sat, Jan 12, 2019, 12:08 PM Wayne Burdick >> >>> Thanks for all the many great suggestions and digressions, folks. Sorry I >>> can't respond to all of them right away. >>> >>> My favorite so far is the request for Semantic Filtering Mode (SFM), which >>> "might, with skillful adjustment, suppress political commentary from 75 >>> meters." Our DSP IC does include odd/even partisan check bits, so this is a >>> SMOP. >>> >>> Runner-up is a proposal for auto-detection of unattended FT8 >>> transmissions, i.e. the "No One's Home AlarM" (NOHAM). >>> >>> Feel free to pile on... >>> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to kevinr at coho.net >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to hbjr at optilink.us From hbjr at optilink.us Sun Jan 13 10:01:28 2019 From: hbjr at optilink.us (HB) Date: Sun, 13 Jan 2019 10:01:28 -0500 Subject: [Elecraft] Query for new DSP features In-Reply-To: References: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> Message-ID: <79903932-401F-425E-B4C4-B7FEA5699FE5@optilink.us> I have used an outboard compressor/expander for this (paired with a 7 band parametric(quasi) equalizer) and besides normalizing audio levels can squash static crashes and pad certain frequencies above a certain intensity automatically (similar to de-easing in function). It was more analog than digital but worked really well - it was an older Aphex with a noise gate and outboard eq. Not easy to setup though. Required an audio amplifier or powered speaker downstream. Hank K4HYJ > On Jan 12, 2019, at 10:48 PM, Christopher Hoover wrote: > > On Fri, Jan 11, 2019 at 8:50 PM Walter Underwood > wrote: > >> It would be really great if the AF gain was automatically to keep the >> audio roughly level when NR is engaged. This drives me nuts, always riding >> the gain back and forth. I?m sure the gain adjustment would be different >> for different conditions, but at least get close. >> > > +1 to this > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to hbjr at optilink.us From forums at david-woolley.me.uk Sun Jan 13 10:45:15 2019 From: forums at david-woolley.me.uk (David Woolley) Date: Sun, 13 Jan 2019 15:45:15 +0000 Subject: [Elecraft] New DSP Idea In-Reply-To: References: Message-ID: <187d1530-aa6b-d950-b3b0-61fde20b7349@david-woolley.me.uk> Assuming that there is enough processing power available, and the architecture physically allows the mixing, manually steering either the peak or the null should be achievable. There is a slight subtlety in that one is trying to achieve a constant time delay at RF, not a constant phase change, but, if RF is sufficiently higher than the the baseband, it will be a good approximation, and the hardware devices being quoted probably have the same defect. Automatically getting a direction is only accurately achievable if the interfering noise is isotropic, at least in the plane containing the line between the antennas. As such, it will not be able to automatically get a direction for an interfering signal, unless it can separate that signal from everything else, and if it can do that, there may be more direct ways of removing the signal. The only way I can see of performing the computation is in the frequency domain. Although everything starts as just a time delay, the down conversion preserves phase not time, so I think one needs to do a Fourier transform, rotate each value by a fixed amount (or one accounting for the offset from the carrier not being negligible) and then invert the transform. (There may be better algorithms.) Because of the discrete nature of FFTs, you would probably want to run several overlapping transforms and average their results. I suspect the current DSP tries to avoid doing a full Fourier transform, and even panoramic adapter FFTs don't need to run overlapping transforms. I think the big question is does the machine have enough processing power to do this. -- David Woolley Owner K2 06123 On 13/01/2019 01:06, David Gilbert wrote: > these things: > > 1.? Actually amplify a desired signal (probably 2 to 3 db) at the > expense of other signals or generalized noise from other directions. > Hams who put up phased verticals don't do it strictly for the transmit > gain. > > 2.? Totally null out an offending signal or noise from a particular > direction.? Your brain most certainly can't do this. > > 3.? Give you angle measurements in degrees. > > As I said, I consider the add/subtract ability (#1 and #2) to be more > useful than the simple display of the phase difference (#3), but we > could have both. > > Check this out .... https://tinyurl.com/ydfvcauz > > It's a hardware implementation of pretty much the same as I'm proposing > Elecraft do in software, and the hardware version goes for $750. From jim at licquia.com Sun Jan 13 11:06:34 2019 From: jim at licquia.com (Jim Licquia) Date: Sun, 13 Jan 2019 11:06:34 -0500 Subject: [Elecraft] Orlando? Message-ID: Wayne, Are you guys going to be at Hamcation in Orlando next month? Thinking that I may want a K3S, but would like to see one first and fiddle with it. Already have a KX2 and KX3. Regards, Jim Licquia, AC9SF Sent from my iPad Pro From n1rj at roadrunner.com Sun Jan 13 11:18:48 2019 From: n1rj at roadrunner.com (Roger D Johnson) Date: Sun, 13 Jan 2019 11:18:48 -0500 Subject: [Elecraft] Query for new DSP features In-Reply-To: <998df78c-8a8f-6014-a482-aef389ddcd56@w2blc.net> References: <255e1008-3eb0-1fda-0856-79498664fbd4@gmail.com> <998df78c-8a8f-6014-a482-aef389ddcd56@w2blc.net> Message-ID: What ever happened to giving us some alternate selectivity on the APF? 73, Roger From dave at nk7z.net Sun Jan 13 11:49:45 2019 From: dave at nk7z.net (Dave Cole (NK7Z)) Date: Sun, 13 Jan 2019 08:49:45 -0800 Subject: [Elecraft] K3: Receiver recovery time Message-ID: <9b5de620-8152-2f38-0993-0ec98f6bb27c@nk7z.net> Hello, Anyone able to answer this question please? In the presence of a strong signal, say -75 db, (or around S9), once that signal ceases, how long does it take the K3 receiver to return to normal receive capability again? -- 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Contest ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon From donwilh at embarqmail.com Sun Jan 13 12:06:50 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 13 Jan 2019 12:06:50 -0500 Subject: [Elecraft] K3: Receiver recovery time In-Reply-To: <9b5de620-8152-2f38-0993-0ec98f6bb27c@nk7z.net> References: <9b5de620-8152-2f38-0993-0ec98f6bb27c@nk7z.net> Message-ID: Dave, That depends on slow or fast AGC and the setting of the AGC DCY menu parameter. Fast is very quick - just watch the S-meter to get some visual indication. 73, Don W3FPR On 1/13/2019 11:49 AM, Dave Cole (NK7Z) wrote: > Hello, > > Anyone able to answer this question please? > > In the presence of a strong signal, say -75 db, (or around S9), once > that signal ceases, how long does it take the K3 receiver to return to > normal receive capability again? > From k9ma at sdellington.us Sun Jan 13 12:14:21 2019 From: k9ma at sdellington.us (K9MA) Date: Sun, 13 Jan 2019 11:14:21 -0600 Subject: [Elecraft] K3 Sub-receiver RIT Message-ID: I've found that during some contest operation, it's handy to call CQ on VFO B, while using VFO A to search and pounce. (Known as Single Operator 2 VFO mode, SO2V.) That way, when unassisted, I can use the P3 to locate promising signals. However, I sometimes wish the RIT would work with the sub-receiver on VFO B. Has anyone found a way to do this? Even better would be to have RIT on VFO B and XIT on VFO A. If it's not currently possible, I'd add it to my firmware wish list. 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us From xdavid at cis-broadband.com Sun Jan 13 12:57:54 2019 From: xdavid at cis-broadband.com (David Gilbert) Date: Sun, 13 Jan 2019 10:57:54 -0700 Subject: [Elecraft] New DSP Idea In-Reply-To: <187d1530-aa6b-d950-b3b0-61fde20b7349@david-woolley.me.uk> References: <187d1530-aa6b-d950-b3b0-61fde20b7349@david-woolley.me.uk> Message-ID: Yes, I agree that the computation needs to be done in the frequency domain with an FFT.? I have no clue whether or not the K3 and K3s have enough computational power to do so, but Lyle (Elecraft's DSP guru) briefly discussed this idea with me when I suggested it several years ago and he seemed to think it might be feasible.? At the time the K3 synths wouldn't preserve lock when you changed frequency so it wouldn't have been very practical back then, but the new synths are fed by the same oscillator now. Regarding the direction finding part of my proposal, I once fed a 40m broadcast band carrier into both receivers of my K3 in diversity mode.? I used my 2 element 40m yagi for one receiver, and the tribander below it for the second receiver.? I then fed the line output of the K3 into the sound card of my computer running an dual trace oscilloscope application.? I didn't know the actual delay of either feedline so I just set the app to trigger on one of the signals and then observed how my trace delay there was on the other signal.? I knew the audio frequency of the signals, the frequency of the RF, and the distance between the two antennas.? While I wasn't able to calculate the actual arrival angle without knowing the actual phase delay of each feedline, I was able to calculate/observe roughly how much it changed over time.? I had to wait for pauses between the voice modulation of the AM signal, of course, but after watching for several minutes I could see that the short term jitter was roughly 5 to 10 degrees and the longer term changes maybe about 15 to 20 degrees.? The results were enough to convince me that a better setup could give interesting information, and I suspect that the azimuth angle would be more stable than the arrival angle. 73, Dave?? AB7E On 1/13/2019 8:45 AM, David Woolley wrote: > Assuming that there is enough processing power available, and the > architecture physically allows the mixing, manually steering either > the peak or the null should be achievable.? There is a slight subtlety > in that one is trying to achieve a constant time delay at RF, not a > constant phase change, but, if RF is sufficiently higher than the the > baseband, it will be a good approximation, and the hardware devices > being quoted probably have the same defect. > > Automatically getting a direction is only accurately achievable if the > interfering noise is isotropic, at least in the plane containing the > line between the antennas. As such, it will not be able to > automatically get a direction for an interfering signal, unless it can > separate that signal from everything else, and if it can do that, > there may be more direct ways of removing the signal. > > The only way I can see of performing the computation is in the > frequency domain.? Although everything starts as just a time delay, > the down conversion preserves phase not time, so I think one needs to > do a Fourier transform, rotate each value by a fixed amount (or one > accounting for the offset from the carrier not being negligible) and > then invert the transform.? (There may be better algorithms.) > > Because of the discrete nature of FFTs, you would probably want to run > several overlapping transforms and average their results. > > I suspect the current DSP tries to avoid doing a full Fourier > transform, and even panoramic adapter FFTs don't need to run > overlapping transforms. > > I think the big question is does the machine have enough processing > power to do this. From ny9h at arrl.net Sun Jan 13 12:56:40 2019 From: ny9h at arrl.net (Bill Steffey) Date: Sun, 13 Jan 2019 12:56:40 -0500 Subject: [Elecraft] Query for new DSP features In-Reply-To: <79903932-401F-425E-B4C4-B7FEA5699FE5@optilink.us> References: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> <79903932-401F-425E-B4C4-B7FEA5699FE5@optilink.us> Message-ID: sounds like an Aphex Compellor On 1/13/2019 10:01 AM, HB wrote: > I have used an outboard compressor/expander for this (paired with a 7 band parametric(quasi) equalizer) and besides normalizing audio levels can squash static crashes and pad certain frequencies above a certain intensity automatically (similar to de-easing in function). It was more analog than digital but worked really well - it was an older Aphex with a noise gate and outboard eq. Not easy to setup though. Required an audio amplifier or powered speaker downstream. > > Hank > K4HYJ > >> On Jan 12, 2019, at 10:48 PM, Christopher Hoover wrote: >> >> On Fri, Jan 11, 2019 at 8:50 PM Walter Underwood >> wrote: >> >>> It would be really great if the AF gain was automatically to keep the >>> audio roughly level when NR is engaged. This drives me nuts, always riding >>> the gain back and forth. I?m sure the gain adjustment would be different >>> for different conditions, but at least get close. >>> >> >> +1 to this >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to hbjr at optilink.us > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to ny9h at arrl.net > From dave at nk7z.net Sun Jan 13 13:09:22 2019 From: dave at nk7z.net (Dave Cole (NK7Z)) Date: Sun, 13 Jan 2019 10:09:22 -0800 Subject: [Elecraft] K3: Receiver recovery time In-Reply-To: References: <9b5de620-8152-2f38-0993-0ec98f6bb27c@nk7z.net> Message-ID: <8bf2e1ed-3c6e-a129-371a-6f57407810c5@nk7z.net> Sorry, I forgot to add, AGC off... 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Contest ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 1/13/19 9:06 AM, Don Wilhelm wrote: > Dave, > > That depends on slow or fast AGC and the setting of the AGC DCY menu > parameter. > Fast is very quick - just watch the S-meter to get some visual indication. > > 73, > Don W3FPR > > On 1/13/2019 11:49 AM, Dave Cole (NK7Z) wrote: >> Hello, >> >> Anyone able to answer this question please? >> >> In the presence of a strong signal, say -75 db, (or around S9), once >> that signal ceases, how long does it take the K3 receiver to return to >> normal receive capability again? >> From dave at nk7z.net Sun Jan 13 13:10:01 2019 From: dave at nk7z.net (Dave Cole (NK7Z)) Date: Sun, 13 Jan 2019 10:10:01 -0800 Subject: [Elecraft] K3: Receiver recovery time In-Reply-To: References: <9b5de620-8152-2f38-0993-0ec98f6bb27c@nk7z.net> Message-ID: Is it faster than .0001 ms? 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Contest ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 1/13/19 9:06 AM, Don Wilhelm wrote: > Dave, > > That depends on slow or fast AGC and the setting of the AGC DCY menu > parameter. > Fast is very quick - just watch the S-meter to get some visual indication. > > 73, > Don W3FPR > > On 1/13/2019 11:49 AM, Dave Cole (NK7Z) wrote: >> Hello, >> >> Anyone able to answer this question please? >> >> In the presence of a strong signal, say -75 db, (or around S9), once >> that signal ceases, how long does it take the K3 receiver to return to >> normal receive capability again? >> From k9ma at sdellington.us Sun Jan 13 13:25:02 2019 From: k9ma at sdellington.us (K9MA) Date: Sun, 13 Jan 2019 12:25:02 -0600 Subject: [Elecraft] K3: Receiver recovery time In-Reply-To: References: <9b5de620-8152-2f38-0993-0ec98f6bb27c@nk7z.net> Message-ID: <2263a859-9687-3506-ea7a-ba6e2c0a6a67@sdellington.us> On 1/13/2019 12:10, Dave Cole (NK7Z) wrote: > Is it faster than .0001 ms? Certainly not. I'm not sure whether it is recovery time or latency, but in full break-in mode, you hear nothing between the dits above something like 10 wpm. (Even with AGC off.) With other non-DSP receivers, one can hear between the dits up to at least 30 wpm with fast AGC. Perhaps it's just the price we pay for the power of DSP. Many years ago, when there were sunspots, I recall hearing multiple echos on 15 meters. I timed them, and the time interval was about 133 ms, just about the time it takes radio waves to circumnavigate the earth. I heard them go around at least twice, and that was receiving off the back of a beam. Talk about long path! That would not have been possible with a DSP receiver. 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us From frantz at pwpconsult.com Sun Jan 13 13:32:53 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Sun, 13 Jan 2019 10:32:53 -0800 Subject: [Elecraft] New DSP Idea In-Reply-To: Message-ID: Given the way processors improve in speed with time (Moore's law), the idea of a new DSP could mean just that. The big issues I see are RFI, power consumption, and heat. If we go in the direction of adding AI to the mix, then we will need more storage as well as more processor. (Your phone relies on the cloud for speech recognition.) I'm beginning to see an external box which should address some of the issues above. 73 Bill AE6JV On 1/13/19 at 9:57 AM, xdavid at cis-broadband.com (David Gilbert) wrote: >I have no clue whether or not the K3 and K3s have enough >computational power to do so, but Lyle (Elecraft's DSP guru) >briefly discussed this idea with me when I suggested it several >years ago and he seemed to think it might be feasible. ----------------------------------------------------------------------- Bill Frantz | Concurrency is hard. 12 out | Periwinkle (408)356-8506 | 10 programmers get it wrong. | 16345 Englewood Ave www.pwpconsult.com | - Jeff Frantz | Los Gatos, CA 95032 From ab2tc at arrl.net Sun Jan 13 13:35:04 2019 From: ab2tc at arrl.net (ab2tc) Date: Sun, 13 Jan 2019 11:35:04 -0700 (MST) Subject: [Elecraft] KPA500 & Drake TR7 In-Reply-To: <24ad3278-178e-e2b1-a139-cac80ce0ccbc@embarqmail.com> References: <246829685.18794704.1547315972097@mail.yahoo.com> <24ad3278-178e-e2b1-a139-cac80ce0ccbc@embarqmail.com> Message-ID: <1547404504951-0.post@n2.nabble.com> Hi Marcel and Don, The TR7 is rated at 250W *input*. See here: https://www.universal-radio.com/catalog/hamhf/tr7.html With typical efficiencies seen in solid state PAs it is probably rated at no more than 100W output, so the KPA500 should give you noticeably more power. Anyway, Don's suggestion to use a constant (but variable) negative voltage applied to the ALC input of the TR7 should work. Make sure that it is well filtered, as any noise or hum will (AM) modulate the RF signal. AB2TC - Knut Don Wilhelm wrote > Marcel, > > Can you add a "Power Control" to the TR7? > It may be as easy as applying a constant negative voltage to the ALC > input. That constant ALC voltage will not cause the problems > encountered when using the dynamic ALC voltage that is applied from the > amplifier. > > 73, > Don W3FPR > > On 1/12/2019 12:59 PM, Marcel Jorba via Elecraft wrote: >> Greetings from Barcelona >> I have here a K3-KPA500 setup that runs great >> I also have a TR7 and I am thinking about using it together with the >> KPA500?The obvious problem: The TR7 delivers a lot of watts (200 pep). >> Is it an idea to discard? Or is there any reasonable approach to? ALC >> control is not a good idea I think >> As an alternative (500-1000 W), is there any small (in size) linear to >> consider? I don't want to go back to the big tube linears. The KPA500 is >> great for what I want to have here. >> 73s de Marcel - EA3IN > -- Sent from: http://elecraft.365791.n2.nabble.com/ From k9ma at sdellington.us Sun Jan 13 13:42:14 2019 From: k9ma at sdellington.us (K9MA) Date: Sun, 13 Jan 2019 12:42:14 -0600 Subject: [Elecraft] KPA500 & Drake TR7 In-Reply-To: <1547404504951-0.post@n2.nabble.com> References: <246829685.18794704.1547315972097@mail.yahoo.com> <24ad3278-178e-e2b1-a139-cac80ce0ccbc@embarqmail.com> <1547404504951-0.post@n2.nabble.com> Message-ID: On 1/13/2019 12:35, ab2tc wrote: > With typical efficiencies seen in solid state PAs it is probably rated at no > more than 100W output, Actually, tube amplifiers can be quite a bit more efficient than solid state ones. The theoretical limit for class B is around 70 percent, a practical limit probably around 60. So, the TR7 might put out 150 W. 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us From richarddw1945 at yahoo.com Sun Jan 13 13:56:15 2019 From: richarddw1945 at yahoo.com (RIchard Williams) Date: Sun, 13 Jan 2019 18:56:15 +0000 (UTC) Subject: [Elecraft] Battery Low K3 In-Reply-To: References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> <53950dff-d2a1-07ef-d237-0db2bda4c4fe@embarqmail.com> Message-ID: <359327140.17879512.1547405775046@mail.yahoo.com> Chuck? An not sure where the people answering your question are obtaining their dis-information from.? ?In any case, the K3 does indeed have a 3 V lithium on the main board.? It is used to power the clock, and it can last from 2 to 10 years. It is a CR 2032 cell and is located? on the left front side on the RF board. This information is on page 59 of the K3 assembly manual.? Additionally,? it is also on page 54? BAT MIN in the Owner's Manual.? Replace the battery and you will be good to go. Dick, K8ZTT? Sent from Yahoo Mail on Android On Sun, Jan 13, 2019 at 7:04, hawley, charles j jr wrote: Oh rats...an RTC battery warning would have been a plus. Chuck KE9UW c-hawley at illinois.edu Sent from my iPad > On Jan 13, 2019, at 6:55 AM, Don Wilhelm wrote: > > Mark, > > Then check the power supply voltage (Use the alternate VFB B display) and all connectors. > That message has nothing to do with the RTC battery. > > There is no internal battery in the K3 other than the tiny RTC battery. > > 73, > Don W3FPR > >> On 1/13/2019 12:01 AM, Mpridesti wrote: >> Don >> >> It is a K3.? Bought it used and carries a low serial number. Never have changed the internal battery (over 8 years in my possession). >> >> Regards, >> Mark, K1RX >> >> >>> On Jan 12, 2019, at 11:41 PM, Don Wilhelm wrote: >>> >>> I assume you mean the KX3.? The K3 has no internal battery. >>> >>> If you have Ni-MH batteries, they need recharging.? If you are using Alkaline batteries, they need to be replaced.? I assume you have set the menu BAT MIN for the type of battery you are using.? See the KX3 manual page 36 of the manual. >>> >>> Set BAT MIN for the type batteries used.? The default of 10 volts is good for external Lead Acid batteries.? All other types require a different setting. >>> >>> 73, >>> Don W3FPR >>> >>>> On 1/12/2019 10:40 PM, Mpridesti via Elecraft wrote: >>>> Just saw a message pop up saying Battery Low >>>> Assume this is the internal battery requires replacement? >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to c-hawley at illinois.edu ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to richarddw1945 at yahoo.com From dave at nk7z.net Sun Jan 13 14:07:36 2019 From: dave at nk7z.net (Dave Cole (NK7Z)) Date: Sun, 13 Jan 2019 11:07:36 -0800 Subject: [Elecraft] K3: Receiver recovery time In-Reply-To: <2263a859-9687-3506-ea7a-ba6e2c0a6a67@sdellington.us> References: <9b5de620-8152-2f38-0993-0ec98f6bb27c@nk7z.net> <2263a859-9687-3506-ea7a-ba6e2c0a6a67@sdellington.us> Message-ID: Hi again Scott, Thank you for your answer, but I am not being clear. Not during break in, just sitting there in receive... If the radio is hit with an S9+ signal, how long after the S9+ signal terminates before the K3 receiver recovers enough to show an weak signal on the IF... No T/R happening, just sitting there in receive. You are close to what I am looking for... I am investigating the possibility of using the K3 as the receiver portion in a homebrew bistatic radar setup running in the HF spectrum. 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Contest ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 1/13/19 10:25 AM, K9MA wrote: > On 1/13/2019 12:10, Dave Cole (NK7Z) wrote: >> Is it faster than .0001 ms? > > Certainly not. I'm not sure whether it is recovery time or latency, but > in full break-in mode, you hear nothing between the dits above something > like 10 wpm. (Even with AGC off.) With other non-DSP receivers, one can > hear between the dits up to at least 30 wpm with fast AGC. Perhaps it's > just the price we pay for the power of DSP. > > Many years ago, when there were sunspots, I recall hearing multiple > echos on 15 meters. I timed them, and the time interval was about 133 > ms, just about the time it takes radio waves to circumnavigate the > earth. I heard them go around at least twice, and that was receiving off > the back of a beam. Talk about long path! That would not have been > possible with a DSP receiver. > > 73, > > Scott K9MA > From ab2tc at arrl.net Sun Jan 13 14:14:11 2019 From: ab2tc at arrl.net (ab2tc) Date: Sun, 13 Jan 2019 12:14:11 -0700 (MST) Subject: [Elecraft] KPA500 & Drake TR7 In-Reply-To: References: <246829685.18794704.1547315972097@mail.yahoo.com> <24ad3278-178e-e2b1-a139-cac80ce0ccbc@embarqmail.com> <1547404504951-0.post@n2.nabble.com> Message-ID: <1547406851458-0.post@n2.nabble.com> Hi again, True, but the TR7 is all solid state, including the finals. See here: http://www.wb4hfn.com/DRAKE/DrakeArticles/InsideTheTR7/Inside_The_TR7-01.htm According to that article Drake claims 130-150W output for bands at above 20m and 60-100W on 80-15m. Boy, is that transceiver ever jam-packed! Wonder how it does cooling-wise. AB2TC - Knut K9MA wrote > On 1/13/2019 12:35, ab2tc wrote: >> With typical efficiencies seen in solid state PAs it is probably rated at >> no >> more than 100W output, > > Actually, tube amplifiers can be quite a bit more efficient than solid > state ones. The theoretical limit for class B is around 70 percent, a > practical limit probably around 60. So, the TR7 might put out 150 W. > > 73, > > Scott K9MA > > -- > Scott K9MA > k9ma@ > > -- Sent from: http://elecraft.365791.n2.nabble.com/ From donwilh at embarqmail.com Sun Jan 13 14:24:36 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 13 Jan 2019 14:24:36 -0500 Subject: [Elecraft] Battery Low K3 In-Reply-To: <359327140.17879512.1547405775046@mail.yahoo.com> References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> <53950dff-d2a1-07ef-d237-0db2bda4c4fe@embarqmail.com> <359327140.17879512.1547405775046@mail.yahoo.com> Message-ID: <46aab932-fa47-be88-c959-1cea1d36c900@embarqmail.com> Dick and Chuck, Please read the description for the BAT MIN on page 54 of the Owner's Manual again. It explicitly states that BAT MIN refers to the main 12v power supply to the K3 and NOT to the 3 volt lithium battery. Check the power supply voltage as read in the ALT VFO B DISPLAY. That gives you the voltage seen inside the K3 and if you have voltage drops at the connectors for the power cable, it will be shown there. The usual setting for BAT MIN is 11 volts. You will NOT be "good to go" even if you replace the lithium 3 volt battery. 73, Don W3FPR On 1/13/2019 1:56 PM, RIchard Williams wrote: > Chuck > > An not sure where the people answering your question are obtaining > their dis-information from.? ?In any case, the K3 does indeed have a 3 > V lithium on the main board.? It is used to power the clock, and it > can last from 2 to 10 years. > > It is a CR 2032 cell and is located? on the left front side on the RF > board. > > This information is on page 59 of the K3 assembly manual. > Additionally,? it is also on page 54? BAT MIN in the Owner's Manual. > > Replace the battery and you will be good to go. > > From nr4c at widomaker.com Sun Jan 13 14:28:23 2019 From: nr4c at widomaker.com (Nr4c) Date: Sun, 13 Jan 2019 14:28:23 -0500 Subject: [Elecraft] Battery Low K3 In-Reply-To: <359327140.17879512.1547405775046@mail.yahoo.com> References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> <53950dff-d2a1-07ef-d237-0db2bda4c4fe@embarqmail.com> <359327140.17879512.1547405775046@mail.yahoo.com> Message-ID: I believe BAT MIN is a user setting to determine the voltage at which the radio will indicate Battery Low notification and below which it will SHUTDOWN! Sent from my iPhone ...nr4c. bill > On Jan 13, 2019, at 1:56 PM, RIchard Williams via Elecraft wrote: > > Chuck > An not sure where the people answering your question are obtaining their dis-information from. In any case, the K3 does indeed have a 3 V lithium on the main board. It is used to power the clock, and it can last from 2 to 10 years. > It is a CR 2032 cell and is located on the left front side on the RF board. > This information is on page 59 of the K3 assembly manual. Additionally, it is also on page 54 BAT MIN in the Owner's Manual. > Replace the battery and you will be good to go. > Dick, K8ZTT > Sent from Yahoo Mail on Android > > On Sun, Jan 13, 2019 at 7:04, hawley, charles j jr wrote: Oh rats...an RTC battery warning would have been a plus. > > Chuck KE9UW > c-hawley at illinois.edu > > Sent from my iPad > >> On Jan 13, 2019, at 6:55 AM, Don Wilhelm wrote: >> >> Mark, >> >> Then check the power supply voltage (Use the alternate VFB B display) and all connectors. >> That message has nothing to do with the RTC battery. >> >> There is no internal battery in the K3 other than the tiny RTC battery. >> >> 73, >> Don W3FPR >> >>> On 1/13/2019 12:01 AM, Mpridesti wrote: >>> Don >>> >>> It is a K3. Bought it used and carries a low serial number. Never have changed the internal battery (over 8 years in my possession). >>> >>> Regards, >>> Mark, K1RX >>> >>> >>>> On Jan 12, 2019, at 11:41 PM, Don Wilhelm wrote: >>>> >>>> I assume you mean the KX3. The K3 has no internal battery. >>>> >>>> If you have Ni-MH batteries, they need recharging. If you are using Alkaline batteries, they need to be replaced. I assume you have set the menu BAT MIN for the type of battery you are using. See the KX3 manual page 36 of the manual. >>>> >>>> Set BAT MIN for the type batteries used. The default of 10 volts is good for external Lead Acid batteries. All other types require a different setting. >>>> >>>> 73, >>>> Don W3FPR >>>> >>>>> On 1/12/2019 10:40 PM, Mpridesti via Elecraft wrote: >>>>> Just saw a message pop up saying Battery Low >>>>> Assume this is the internal battery requires replacement? >>> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> P From ab2tc at arrl.net Sun Jan 13 14:29:46 2019 From: ab2tc at arrl.net (ab2tc) Date: Sun, 13 Jan 2019 12:29:46 -0700 (MST) Subject: [Elecraft] KPA500 & Drake TR7 In-Reply-To: <1547406851458-0.post@n2.nabble.com> References: <246829685.18794704.1547315972097@mail.yahoo.com> <24ad3278-178e-e2b1-a139-cac80ce0ccbc@embarqmail.com> <1547404504951-0.post@n2.nabble.com> <1547406851458-0.post@n2.nabble.com> Message-ID: <1547407786386-0.post@n2.nabble.com> Hi again, I totally mangled the 2nd statement. Corrected below. Knut ab2tc wrote > Hi again, > > True, but the TR7 is all solid state, including the finals. See here: > > http://www.wb4hfn.com/DRAKE/DrakeArticles/InsideTheTR7/Inside_The_TR7-01.htm > > According to that article Drake claims 130-150W output for 80 and 40m and > 90-100W on the higher bands. > > Boy, is that transceiver ever jam-packed! Wonder how it does cooling-wise. > > AB2TC - Knut > -- Sent from: http://elecraft.365791.n2.nabble.com/ From ghyoungman at gmail.com Sun Jan 13 14:30:40 2019 From: ghyoungman at gmail.com (Grant Youngman) Date: Sun, 13 Jan 2019 14:30:40 -0500 Subject: [Elecraft] KPA500 & Drake TR7 In-Reply-To: <1547406851458-0.post@n2.nabble.com> References: <246829685.18794704.1547315972097@mail.yahoo.com> <24ad3278-178e-e2b1-a139-cac80ce0ccbc@embarqmail.com> <1547404504951-0.post@n2.nabble.com> <1547406851458-0.post@n2.nabble.com> Message-ID: <16E3A0FF-BAB1-464B-B59B-DC00B0883099@gmail.com> As an aside on the TR-7 (one of my all-time favorite radios), Drake generally limiting output power to about 120W (adjusted on 20M) to keep the PA healthy long term. While the PA is capable of 150-200W output, it was certainly not recommended. As to cooling, there was an optional fan to cool the PA for modes with high duty cycle (RTTY, etc). Grant NQ5T K3 #2091 KX3 #8342 > On Jan 13, 2019, at 2:14 PM, ab2tc wrote: > > Hi again, > > True, but the TR7 is all solid state, including the finals. See here: > > http://www.wb4hfn.com/DRAKE/DrakeArticles/InsideTheTR7/Inside_The_TR7-01.htm > > According to that article Drake claims 130-150W output for bands at above > 20m and 60-100W on 80-15m. > > Boy, is that transceiver ever jam-packed! Wonder how it does cooling-wise. > > AB2TC - Knut > From richarddw1945 at yahoo.com Sun Jan 13 14:38:24 2019 From: richarddw1945 at yahoo.com (RIchard Williams) Date: Sun, 13 Jan 2019 19:38:24 +0000 (UTC) Subject: [Elecraft] Battery Low K3 In-Reply-To: <46aab932-fa47-be88-c959-1cea1d36c900@embarqmail.com> References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> <53950dff-d2a1-07ef-d237-0db2bda4c4fe@embarqmail.com> <359327140.17879512.1547405775046@mail.yahoo.com> <46aab932-fa47-be88-c959-1cea1d36c900@embarqmail.com> Message-ID: <1130670738.17875685.1547408304425@mail.yahoo.com> Don, Yep, my bad. I re-read it, and you are right.? Thanks for the correction.? Dick, K8ZTT Sent from Yahoo Mail on Android On Sun, Jan 13, 2019 at 12:24, Don Wilhelm wrote: Dick and Chuck, Please read the description for the BAT MIN on page 54 of the Owner's Manual again. It explicitly states that BAT MIN refers to the main 12v power supply to the K3 and NOT to the 3 volt lithium battery. Check the power supply voltage as read in the ALT VFO B DISPLAY. That gives you the voltage seen inside the K3 and if you have voltage drops at the connectors for the power cable, it will be shown there. The usual setting for BAT MIN is 11 volts. You will NOT be "good to go" even if you replace the lithium 3 volt battery. 73, Don W3FPR On 1/13/2019 1:56 PM, RIchard Williams wrote: > Chuck > > An not sure where the people answering your question are obtaining > their dis-information from.? ?In any case, the K3 does indeed have a 3 > V lithium on the main board.? It is used to power the clock, and it > can last from 2 to 10 years. > > It is a CR 2032 cell and is located? on the left front side on the RF > board. > > This information is on page 59 of the K3 assembly manual. > Additionally,? it is also on page 54? BAT MIN in the Owner's Manual. > > Replace the battery and you will be good to go. > > From donwilh at embarqmail.com Sun Jan 13 14:53:18 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 13 Jan 2019 14:53:18 -0500 Subject: [Elecraft] K3: Receiver recovery time In-Reply-To: References: <9b5de620-8152-2f38-0993-0ec98f6bb27c@nk7z.net> <2263a859-9687-3506-ea7a-ba6e2c0a6a67@sdellington.us> Message-ID: Dave, I am trying to think of how you might test it. The best I can think of is to listen to both a noise source and an XG3 sending a CW string of dots. Increase the speed of the CW sent by the XG3 until you can no longer hear the noise source between dits. Then either calculate the off times for the dits or measure it on an oscilloscope. 73, Don W3FPR On 1/13/2019 2:07 PM, Dave Cole (NK7Z) wrote: > Hi again Scott, > > Thank you for your answer, but I am not being clear. > > Not during break in, just sitting there in receive...? If the radio is > hit with an S9+ signal, how long after the S9+ signal terminates before > the K3 receiver recovers enough to show an weak signal on the IF...? No > T/R happening, just sitting there in receive. > > You are close to what I am looking for...? I am investigating the > possibility of using the K3 as the receiver portion in a homebrew > bistatic radar setup running in the HF spectrum. From n3eta at coastside.net Sun Jan 13 15:07:42 2019 From: n3eta at coastside.net (Ron Genovesi) Date: Sun, 13 Jan 2019 12:07:42 -0800 Subject: [Elecraft] Slightly Unbalanced dipole? Message-ID: <453CCABD-A744-426F-AEB2-30CF629DFFAD@coastside.net> I was asked a question by a newcomer to HF today. After thinking about it, I realized it had never really occurred to me. So I?ll pass it on to the group and see what the antenna gurus think. Is there ever a time where a slight imbalance in a dipole could be beneficial? My first inclination was, No, other than the obvious OCF Dipole. But considering that you could have very different conditions under an antenna, both above the ground and under the ground, not to mention a difference in height above ground. What do you think. Could a couple of inches or so difference in the length of the legs of a dipole ever work in your favor? Ron Genovesi n3eta at coastside.net 541-761-1103 From donwilh at embarqmail.com Sun Jan 13 15:23:32 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 13 Jan 2019 15:23:32 -0500 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: <453CCABD-A744-426F-AEB2-30CF629DFFAD@coastside.net> References: <453CCABD-A744-426F-AEB2-30CF629DFFAD@coastside.net> Message-ID: <7fc45478-b2cb-bc1b-0fa9-19a9ea71d1de@embarqmail.com> Ron, With a slight difference, I cannot see that it would either benefit or degrade. The current distribution on the radiator might be a little off-center, but it will still work. But it is one reason for using a very good current choke on the feedline - to keep RF off the outer braid of the coax. The OCF antennas are infamous for conducting RF into the shack. 73, Don W3FPR On 1/13/2019 3:07 PM, Ron Genovesi wrote: > I was asked a question by a newcomer to HF today. After thinking about it, I realized it had never really occurred to me. So I?ll pass it on to the group and see what the antenna gurus think. > Is there ever a time where a slight imbalance in a dipole could be beneficial? My first inclination was, No, other than the obvious OCF Dipole. But considering that you could have very different conditions under an antenna, both above the ground and under the ground, not to mention a difference in height above ground. What do you think. Could a couple of inches or so difference in the length of the legs of a dipole ever work in your favor? From k9ma at sdellington.us Sun Jan 13 15:24:20 2019 From: k9ma at sdellington.us (K9MA) Date: Sun, 13 Jan 2019 14:24:20 -0600 Subject: [Elecraft] K3: Receiver recovery time In-Reply-To: References: <9b5de620-8152-2f38-0993-0ec98f6bb27c@nk7z.net> <2263a859-9687-3506-ea7a-ba6e2c0a6a67@sdellington.us> Message-ID: You ought to be able to measure it by simply looking at the audio output with a scope. Just send some dits and look at how long it takes for the noise to reappear. You might have to use a noise source, or a low level carrier at a slightly different frequency. Of course, with the AGC off and RF gain high enough to detect a weak signal, things are going to overload. I'd run the test first with a test signal which does not overload the receiver, and then one equivalent to a very strong signal. When actually listening to the radio with AGC off, of course, it is essential to use the audio clipper to prevent hearing damage. That may or may not affect recovery time. 73, Scott K9MA On 1/13/2019 13:53, Don Wilhelm wrote: > Dave, > > I am trying to think of how you might test it. > The best I can think of is to listen to both a noise source and an XG3 > sending a CW string of dots.? Increase the speed of the CW sent by the > XG3 until you can no longer hear the noise source between dits. > Then either calculate the off times for the dits or measure it on an > oscilloscope. > > 73, > Don W3FPR > > On 1/13/2019 2:07 PM, Dave Cole (NK7Z) wrote: >> Hi again Scott, >> >> Thank you for your answer, but I am not being clear. >> >> Not during break in, just sitting there in receive...? If the radio >> is hit with an S9+ signal, how long after the S9+ signal terminates >> before the K3 receiver recovers enough to show an weak signal on the >> IF...? No T/R happening, just sitting there in receive. >> >> You are close to what I am looking for...? I am investigating the >> possibility of using the K3 as the receiver portion in a homebrew >> bistatic radar setup running in the HF spectrum. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9ma at sdellington.us -- Scott K9MA k9ma at sdellington.us From dave at nk7z.net Sun Jan 13 15:43:48 2019 From: dave at nk7z.net (Dave Cole (NK7Z)) Date: Sun, 13 Jan 2019 12:43:48 -0800 Subject: [Elecraft] K3: Receiver recovery time In-Reply-To: References: <9b5de620-8152-2f38-0993-0ec98f6bb27c@nk7z.net> <2263a859-9687-3506-ea7a-ba6e2c0a6a67@sdellington.us> Message-ID: Hi Don, Thanks for the combined brain power! I have a plan for testing if it ever gets that far. I am just trying to see if the K3 receiver recovers sufficiently fast in a general sort of way first. I believe I could look at RF levels on the IF while transmitting, (using a different transmitter and a storage scope to look at the K3 IF), then just drop the carrier while still looking at the levels with that scope. When I see signals return to the IF I have the recovery time of the receiver. I am just trying to skip that step hoping someone actually knows the recovery time of the receiver, as opposed to actual testing. If the K3 is even close, I will set up test jig for it, if not, then I'll look for a better way. Thanks again for your thoughts here! 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Contest ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 1/13/19 11:53 AM, Don Wilhelm wrote: > Dave, > > I am trying to think of how you might test it. > The best I can think of is to listen to both a noise source and an XG3 > sending a CW string of dots.? Increase the speed of the CW sent by the > XG3 until you can no longer hear the noise source between dits. > Then either calculate the off times for the dits or measure it on an > oscilloscope. > > 73, > Don W3FPR > > On 1/13/2019 2:07 PM, Dave Cole (NK7Z) wrote: >> Hi again Scott, >> >> Thank you for your answer, but I am not being clear. >> >> Not during break in, just sitting there in receive...? If the radio is >> hit with an S9+ signal, how long after the S9+ signal terminates >> before the K3 receiver recovers enough to show an weak signal on the >> IF...? No T/R happening, just sitting there in receive. >> >> You are close to what I am looking for...? I am investigating the >> possibility of using the K3 as the receiver portion in a homebrew >> bistatic radar setup running in the HF spectrum. From brianpepperdine at sympatico.ca Sun Jan 13 15:58:31 2019 From: brianpepperdine at sympatico.ca (Brian) Date: Sun, 13 Jan 2019 20:58:31 +0000 Subject: [Elecraft] TR7 power in regard to running an Elecraft amp Message-ID: I spoke to a Drake tech way back when on some matters. His advice was to turn the ALC (or whatever it was for drive level) for the TR7 on the small internal pot to keep it at 100w, rather than full power or even less than the full possible. This was long term better for finals I think and left some cushion overall for the ratings. Its power, no surprise, goes down as one approaches using the 10 m band... a band I have rarely been on... even 12m is a bit rare for me, personally. So I turned the power down...small difference between the 100w or so on 80 versus just that much more it can in theory do in a not so practical actual sense, given it is an old rig and who knows what re. replacement finals etc. FWIW Brien VE3VAW Sent from Outlook From donwilh at embarqmail.com Sun Jan 13 16:08:23 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 13 Jan 2019 16:08:23 -0500 Subject: [Elecraft] K3: Receiver recovery time In-Reply-To: References: <9b5de620-8152-2f38-0993-0ec98f6bb27c@nk7z.net> <2263a859-9687-3506-ea7a-ba6e2c0a6a67@sdellington.us> Message-ID: <1253d66a-3a80-6153-d34b-86ac15676d4f@embarqmail.com> Dave, I would be cautious about looking only at the IF. That is all in front of the DSP. Certainly the DSP creates some latency, but that is not what we are talking about. The DSP latency will delay all signals. So test in the configuration that you will likely use. If using the IF output, then test only at the IF. Your question relates to the recovery time for the entire receiver. And that does include the filters, both roofing filters and the DSP filtering. Don't forget that the Hardware AGC cannot be turned off, but that does not come into play until the signal is greater than S-9+60 As A result, I believe you need to do actual testing with your particular K3 under various filtering conditions. In other words, you are asking a very complex question, and you have not given us the other configuration settings and filters to be used - other than AGC OFF. For that reason, your K3 may have a different answer than others. 73, Don W3FPR On 1/13/2019 3:43 PM, Dave Cole (NK7Z) wrote: > Hi Don, > > Thanks for the combined brain power!? I have a plan for testing if it > ever gets that far.? I am just trying to see if the K3 receiver recovers > sufficiently fast in a general sort of way first. > > I believe I could look at RF levels on the IF while transmitting, (using > a different transmitter and a storage scope to look at the K3 IF), then > just drop the carrier while still looking at the levels with that scope. > ?When I see signals return to the IF I have the recovery time of the > receiver. > > I am just trying to skip that step hoping someone actually knows the > recovery time of the receiver, as opposed to actual testing. > > If the K3 is even close, I will set up test jig for it, if not, then > I'll look for a better way. > From wes_n7ws at triconet.org Sun Jan 13 16:12:28 2019 From: wes_n7ws at triconet.org (Wes Stewart) Date: Sun, 13 Jan 2019 14:12:28 -0700 Subject: [Elecraft] KPA500 & Drake TR7 In-Reply-To: <1547406851458-0.post@n2.nabble.com> References: <246829685.18794704.1547315972097@mail.yahoo.com> <24ad3278-178e-e2b1-a139-cac80ce0ccbc@embarqmail.com> <1547404504951- 0.post@n2.nabble.com> <1547406851458-0.post@n2.nabble.com> Message-ID: <38cd028f-a594-fc23-4e69-95191007aac1@triconet.org> Drake rated the TR7 by input power as was common then.? 250W.? They recommended a fan kit for high duty cycle RTTY operation. I owned one for years and it was a wonderful radio.? The only issue was tin-plated pins (sound familiar) on the interface between the main circuity and the digital readout board.? Some contact cleaner and massaging the pins after loosening the mounting screws usually fixed it for another six months or so. There was no internal provision for split operation, they sold an external VFO.? I built my own. Wes? N7WS On 1/13/2019 12:14 PM, ab2tc wrote: > Hi again, > > True, but the TR7 is all solid state, including the finals. See here: > > http://www.wb4hfn.com/DRAKE/DrakeArticles/InsideTheTR7/Inside_The_TR7-01.htm > > According to that article Drake claims 130-150W output for bands at above > 20m and 60-100W on 80-15m. > > Boy, is that transceiver ever jam-packed! Wonder how it does cooling-wise. > > AB2TC - Knut > > > K9MA wrote >> On 1/13/2019 12:35, ab2tc wrote: >>> With typical efficiencies seen in solid state PAs it is probably rated at >>> no >>> more than 100W output, >> Actually, tube amplifiers can be quite a bit more efficient than solid >> state ones. The theoretical limit for class B is around 70 percent, a >> practical limit probably around 60. So, the TR7 might put out 150 W. >> >> 73, >> >> Scott K9MA >> >> -- >> Scott K9MA >> k9ma@ >> > > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wes_n7ws at triconet.org > From rmcgraw at blomand.net Sun Jan 13 16:28:43 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sun, 13 Jan 2019 15:28:43 -0600 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: <453CCABD-A744-426F-AEB2-30CF629DFFAD@coastside.net> References: <453CCABD-A744-426F-AEB2-30CF629DFFAD@coastside.net> Message-ID: To answer the question "Could a couple of inches or so difference in the length of the legs of a dipole ever work in your favor?"......depends on the frequency.? For lower frequencies likely NO, for higher frequencies maybe YES.? Thus 2" for a 160M dipole would be 0.066% while 2" for a 10M dipole would be 1.02%. In either case..........I doubt that it would make a difference due to local installation conditions.? i.e.? Different height above ground for the 2 sections, different ground conductivity under the 2 sections, different location / proximity to surrounding objects, different types of end insulators, and etc. As pointed out earlier the current may shift a wee bit and thus distort the "ideal" pattern but in the real world of ham antennas........NAH. 73 Bob, K4TAX On 1/13/2019 2:07 PM, Ron Genovesi wrote: > I was asked a question by a newcomer to HF today. After thinking about it, I realized it had never really occurred to me. So I?ll pass it on to the group and see what the antenna gurus think. > Is there ever a time where a slight imbalance in a dipole could be beneficial? My first inclination was, No, other than the obvious OCF Dipole. But considering that you could have very different conditions under an antenna, both above the ground and under the ground, not to mention a difference in height above ground. What do you think. Could a couple of inches or so difference in the length of the legs of a dipole ever work in your favor? > > Ron Genovesi > n3eta at coastside.net > 541-761-1103 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From rayalbers at gmail.com Sun Jan 13 16:55:34 2019 From: rayalbers at gmail.com (Ray Albers) Date: Sun, 13 Jan 2019 16:55:34 -0500 Subject: [Elecraft] Slightly Unbalanced dipole? Message-ID: A friend once told me, "Almost none of us has a balanced dipole." What he meant is, few of us are lucky enough to be able to put a dipole high up and completely in the clear - most of us have to put it up where we can, and one side will be closer to houses, trees, gutters, chain link fences..... than the other. Probably true! 73 Ray K2HYD From ea3in at yahoo.com Sun Jan 13 17:19:05 2019 From: ea3in at yahoo.com (Marcel Jorba) Date: Sun, 13 Jan 2019 22:19:05 +0000 (UTC) Subject: [Elecraft] KPA500 & Drake TR7 In-Reply-To: <246829685.18794704.1547315972097@mail.yahoo.com> References: <246829685.18794704.1547315972097.ref@mail.yahoo.com> <246829685.18794704.1547315972097@mail.yahoo.com> Message-ID: <1531906306.19187691.1547417945766@mail.yahoo.com> Thanks to all of for your prompt answers On CW it works great thanks to the carrier adjustment control On SSB: it goes to 150W out very easy Yes it is just for fun. The K3 is great but the TR7 is funny and special. One last question: Someone suggested to use a 9V battery? with a pot to inject a constant?negative voltage?in to the TR7. But any idea about the maximum voltage? Regrds Marcel On Saturday, January 12, 2019, 6:59:32 PM GMT+1, Marcel Jorba wrote: Greetings from Barcelona I have here a K3-KPA500 setup that runs great I also have a TR7 and I am thinking about using it together with the KPA500?The obvious problem: The TR7 delivers a lot of watts (200 pep). Is it an idea to discard? Or is there any reasonable approach to? ALC control is not a good idea I think As an alternative (500-1000 W), is there any small (in size) linear to consider? I don't want to go back to the big tube linears. The KPA500 is great for what I want to have here. 73s de Marcel - EA3IN From rmcgraw at blomand.net Sun Jan 13 17:34:58 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sun, 13 Jan 2019 16:34:58 -0600 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: References: Message-ID: That's why I use the statement "xxx ft center fed wire with balanced feed". I do have the ability to measure the current in each side of the feedline. As long as it is within 5%, about the limits of accuracy of measurements, I'm happy. Bob, K4TAX Sent from my iPhone > On Jan 13, 2019, at 3:55 PM, Ray Albers wrote: > > A friend once told me, "Almost none of us has a balanced dipole." > > What he meant is, few of us are lucky enough to be able to put a dipole > high up and completely in the clear - most of us have to put it up where we > can, and one side will be closer to houses, trees, gutters, chain link > fences..... than the other. > > Probably true! > > 73 > Ray K2HYD > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From jh3sif at sumaq.jp Sun Jan 13 17:37:15 2019 From: jh3sif at sumaq.jp (Keith Onishi) Date: Mon, 14 Jan 2019 07:37:15 +0900 Subject: [Elecraft] KX3 - Mode switch skips AM Message-ID: Hello, Tapping MODE switch on my KX3 with MCU 02.90, most latest firmware, switches mode from SSB -> CW -> FM, then back to SSB. It does skips AM. I have not switched to AM for long time. I think I was able to select AM by tapping MODE before. I went through KX3 Owner?s Manual to look for any configuration to skip any specific mode, but found none. Sending ?MD5;? from KX3 utility software switches KX3 to AM mode. So MPU is OK on selecting a mode except switching the mode by MODE switch. I restored my KX3 configuration backed up almost 6 months ago, but the symptom is same. Then I reloaded the latest firmware to my KX3, but the same result. Have anyone experienced the similar problem? Your though on any possible cause are welcome. 73 de JH3SIF, Keith From dave at nk7z.net Sun Jan 13 17:38:38 2019 From: dave at nk7z.net (Dave Cole (NK7Z)) Date: Sun, 13 Jan 2019 14:38:38 -0800 Subject: [Elecraft] K3: Receiver recovery time In-Reply-To: <1253d66a-3a80-6153-d34b-86ac15676d4f@embarqmail.com> References: <9b5de620-8152-2f38-0993-0ec98f6bb27c@nk7z.net> <2263a859-9687-3506-ea7a-ba6e2c0a6a67@sdellington.us> <1253d66a-3a80-6153-d34b-86ac15676d4f@embarqmail.com> Message-ID: <9119f4f2-9215-859c-14e2-e36bda600e3f@nk7z.net> Thank you Don!! I was trying to get a general feel for what to expect, a ms, or us type of answer... I was thinking of using the IF to avoid the DSP filters for just the reasons you cited. I am sure you are correct about testing-- time to break out the scope... Thanks again for your insight! 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Contest ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 1/13/19 1:08 PM, Don Wilhelm wrote: > Dave, > > I would be cautious about looking only at the IF.? That is all in front > of the DSP. > Certainly the DSP creates some latency, but that is not what we are > talking about.? The DSP latency will delay all signals. > > So test in the configuration that you will likely use.? If using the IF > output, then test only at the IF. > > Your question relates to the recovery time for the entire receiver. > And that does include the filters, both roofing filters and the DSP > filtering. > > Don't forget that the Hardware AGC cannot be turned off, but that does > not come into play until the signal is greater than S-9+60 > > As A result, I believe you need to do actual testing with your > particular K3 under various filtering conditions. > In other words, you are asking a very complex question, and you have not > given us the other configuration settings and filters to be used - other > than AGC OFF.? For that reason, your K3 may have a different answer than > others. > > 73, > Don W3FPR > > On 1/13/2019 3:43 PM, Dave Cole (NK7Z) wrote: >> Hi Don, >> >> Thanks for the combined brain power!? I have a plan for testing if it >> ever gets that far.? I am just trying to see if the K3 receiver >> recovers sufficiently fast in a general sort of way first. >> >> I believe I could look at RF levels on the IF while transmitting, >> (using a different transmitter and a storage scope to look at the K3 >> IF), then just drop the carrier while still looking at the levels with >> that scope. ??When I see signals return to the IF I have the recovery >> time of the receiver. >> >> I am just trying to skip that step hoping someone actually knows the >> recovery time of the receiver, as opposed to actual testing. >> >> If the K3 is even close, I will set up test jig for it, if not, then >> I'll look for a better way. >> From jh3sif at sumaq.jp Sun Jan 13 17:48:07 2019 From: jh3sif at sumaq.jp (Keith Onishi) Date: Mon, 14 Jan 2019 07:48:07 +0900 Subject: [Elecraft] KX3 - Mode switch skips AM In-Reply-To: References: Message-ID: Correction as below; Tapping MODE switch on my KX3 with MCU 02.90, most latest firmware, switches mode from SSB -> CW -> FM -> FM, then back to SSB. It does skips AM. 73 de JH3SIF, Keith > 2019/01/14 7:37?Keith Onishi ????: > > Hello, > > Tapping MODE switch on my KX3 with MCU 02.90, most latest firmware, switches mode from SSB -> CW -> FM, then back to SSB. It does skips AM. > I have not switched to AM for long time. I think I was able to select AM by tapping MODE before. > I went through KX3 Owner?s Manual to look for any configuration to skip any specific mode, but found none. > Sending ?MD5;? from KX3 utility software switches KX3 to AM mode. So MPU is OK on selecting a mode except switching the mode by MODE switch. > I restored my KX3 configuration backed up almost 6 months ago, but the symptom is same. Then I reloaded the latest firmware to my KX3, but the same result. > > Have anyone experienced the similar problem? > Your though on any possible cause are welcome. > > 73 de JH3SIF, Keith > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jh3sif at sumaq.jp From donwilh at embarqmail.com Sun Jan 13 17:53:43 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 13 Jan 2019 17:53:43 -0500 Subject: [Elecraft] KX3 - Mode switch skips AM In-Reply-To: References: Message-ID: Keith, Go to the menu and make sure AM MODE is turned ON. 73, Don W3FPR On 1/13/2019 5:37 PM, Keith Onishi wrote: > Hello, > > Tapping MODE switch on my KX3 with MCU 02.90, most latest firmware, switches mode from SSB -> CW -> FM, then back to SSB. It does skips AM. > I have not switched to AM for long time. I think I was able to select AM by tapping MODE before. > I went through KX3 Owner?s Manual to look for any configuration to skip any specific mode, but found none. > Sending ?MD5;? from KX3 utility software switches KX3 to AM mode. So MPU is OK on selecting a mode except switching the mode by MODE switch. > I restored my KX3 configuration backed up almost 6 months ago, but the symptom is same. Then I reloaded the latest firmware to my KX3, but the same result. > From jim at audiosystemsgroup.com Sun Jan 13 17:59:09 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Sun, 13 Jan 2019 14:59:09 -0800 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: References: Message-ID: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> Your friend is a wise man. That is, indeed, reality.? There's a discussion about this in one of my tutorials. http://k9yc.com/CoaxChokesPPT.pdf The PRIMARY reason for putting a very good common mode choke at the feedpoint of an antenna is to prevent the feedline from radiating into your neighbor's living room and from picking up noise from his living room on receive. The reason this works is that the feedline probably runs closer to his living room (and yours) than the antenna itself. A choke will not eliminate all noise, because the antenna is picking it up, and it won't eliminate all of your TX RF in his living room, because your antenna radiates it. 73, Jim K9YC On 1/13/2019 1:55 PM, Ray Albers wrote: > A friend once told me, "Almost none of us has a balanced dipole." > > What he meant is, few of us are lucky enough to be able to put a dipole > high up and completely in the clear - most of us have to put it up where we > can, and one side will be closer to houses, trees, gutters, chain link > fences..... than the other. From jim at audiosystemsgroup.com Sun Jan 13 18:00:17 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Sun, 13 Jan 2019 15:00:17 -0800 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: <7fc45478-b2cb-bc1b-0fa9-19a9ea71d1de@embarqmail.com> References: <453CCABD-A744-426F-AEB2-30CF629DFFAD@coastside.net> <7fc45478-b2cb-bc1b-0fa9-19a9ea71d1de@embarqmail.com> Message-ID: <313d45a0-1ec2-2f79-a0f8-6bd596598844@audiosystemsgroup.com> On 1/13/2019 12:23 PM, Don Wilhelm wrote: > The OCF antennas are infamous for conducting RF into the shack. And for being very noisy on receive. 73, Jim K9YC From donwilh at embarqmail.com Sun Jan 13 18:10:16 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 13 Jan 2019 18:10:16 -0500 Subject: [Elecraft] KPA500 & Drake TR7 In-Reply-To: <1531906306.19187691.1547417945766@mail.yahoo.com> References: <246829685.18794704.1547315972097.ref@mail.yahoo.com> <246829685.18794704.1547315972097@mail.yahoo.com> <1531906306.19187691.1547417945766@mail.yahoo.com> Message-ID: <56e4b153-d9b8-67d6-c487-c20fe3e75694@embarqmail.com> Marcel, About the maximum voltage, that might be in the TR7 specifications. OTOH, start with the pot at a low voltage and increase it until you achieve the results that you want. The K3 EXT ALC default threshold is -4.0 volts, so that may be a good starting point for your experiments. 73, Don W3FPR On 1/13/2019 5:19 PM, Marcel Jorba via Elecraft wrote: > Thanks to all of for your prompt answers > On CW it works great thanks to the carrier adjustment control > > On SSB: it goes to 150W out very easy > Yes it is just for fun. > The K3 is great but the TR7 is funny and special. > > > One last question: Someone suggested to use a 9V battery? with a pot to inject a constant?negative voltage?in to the TR7. But any idea about the maximum voltage? From jh3sif at sumaq.jp Sun Jan 13 18:17:17 2019 From: jh3sif at sumaq.jp (jh3sif at sumaq.jp) Date: Mon, 14 Jan 2019 08:17:17 +0900 Subject: [Elecraft] KX3 - Mode switch skips AM In-Reply-To: References: Message-ID: <24AD14CA-8121-4C6E-91A9-F07541471FBD@sumaq.jp> Many thanks, Don. Now AM mode came back. But I do not remember when I set AM MODE OFF. 73 de JH3SIF, Keith > 2019/01/14 7:53?Don Wilhelm ????: > > Keith, > > Go to the menu and make sure AM MODE is turned ON. > > 73, > Don W3FPR > > On 1/13/2019 5:37 PM, Keith Onishi wrote: >> Hello, >> Tapping MODE switch on my KX3 with MCU 02.90, most latest firmware, switches mode from SSB -> CW -> FM, then back to SSB. It does skips AM. >> I have not switched to AM for long time. I think I was able to select AM by tapping MODE before. >> I went through KX3 Owner?s Manual to look for any configuration to skip any specific mode, but found none. >> Sending ?MD5;? from KX3 utility software switches KX3 to AM mode. So MPU is OK on selecting a mode except switching the mode by MODE switch. >> I restored my KX3 configuration backed up almost 6 months ago, but the symptom is same. Then I reloaded the latest firmware to my KX3, but the same result. From alorona at sbcglobal.net Sun Jan 13 18:42:13 2019 From: alorona at sbcglobal.net (Al Lorona) Date: Sun, 13 Jan 2019 23:42:13 +0000 (UTC) Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> Message-ID: <1683298941.19225113.1547422933771@mail.yahoo.com> By the way, whenever Jim says, "...a very good common mode choke at the?feedpoint of an antenna...," he means an antenna fed with coax. For the rest of us, of course, that choke would (should) go at the output of the antenna tuner, whether in the shack or close by. Al? W6LX ? From c-hawley at illinois.edu Sun Jan 13 18:48:03 2019 From: c-hawley at illinois.edu (hawley, charles j jr) Date: Sun, 13 Jan 2019 23:48:03 +0000 Subject: [Elecraft] KX3 - Mode switch skips AM In-Reply-To: References: , Message-ID: Go to MENU and AM, turn it on? Chuck Jack KE9UW Sent from my iPhone, cjack > On Jan 13, 2019, at 4:48 PM, Keith Onishi wrote: > > Correction as below; > > Tapping MODE switch on my KX3 with MCU 02.90, most latest firmware, switches mode from SSB -> CW -> FM -> FM, then back to SSB. It does skips AM. > > 73 de JH3SIF, Keith > >> 2019/01/14 7:37?Keith Onishi ????: >> >> Hello, >> >> Tapping MODE switch on my KX3 with MCU 02.90, most latest firmware, switches mode from SSB -> CW -> FM, then back to SSB. It does skips AM. >> I have not switched to AM for long time. I think I was able to select AM by tapping MODE before. >> I went through KX3 Owner?s Manual to look for any configuration to skip any specific mode, but found none. >> Sending ?MD5;? from KX3 utility software switches KX3 to AM mode. So MPU is OK on selecting a mode except switching the mode by MODE switch. >> I restored my KX3 configuration backed up almost 6 months ago, but the symptom is same. Then I reloaded the latest firmware to my KX3, but the same result. >> >> Have anyone experienced the similar problem? >> Your though on any possible cause are welcome. >> >> 73 de JH3SIF, Keith >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to jh3sif at sumaq.jp > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to c-hawley at illinois.edu From wunder at wunderwood.org Sun Jan 13 18:58:03 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Sun, 13 Jan 2019 15:58:03 -0800 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: <1683298941.19225113.1547422933771@mail.yahoo.com> References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> Message-ID: It is reasonable to put a choke at the antenna with open wire line. Open wire isn?t magic, it can carry common mode currents, too. Both wires high, both wires low, and that is common mode. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 13, 2019, at 3:42 PM, Al Lorona wrote: > > By the way, whenever Jim says, "...a very good common mode choke at the feedpoint of an antenna...," he means an antenna fed with coax. For the rest of us, of course, that choke would (should) go at the output of the antenna tuner, whether in the shack or close by. > > Al W6LX > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From donwilh at embarqmail.com Sun Jan 13 18:59:18 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 13 Jan 2019 18:59:18 -0500 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: <1683298941.19225113.1547422933771@mail.yahoo.com> References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> Message-ID: Al, If not placed at the antenna feedpoint (up at the antenna), then the feedline may radiate due to common mode current. For feedlines using parallel conductors, the problem is not as bad if the feedline exits at right angles from the radiator for at least a half wavelength. In that case, the common mode choke can be placed at the junction of the parallel line and coax. In all cases of a radiator fed with coax, a good common mode choke at the radiator feedpoint is necessary. Even though the RF on the inside of the coax is balanced, when the coax reaches the radiator, the side of the antenna connected to the coax shield sees two paths. One is the side of the radiator, and the other is the outside of the coax braid - it will dutifully split to follow both paths depending on the impedance of each one. A good common mode choke will prevent the RF current from seeing the coax shield as another conductor. A similar situation exists at the transition between parallel feedline and coax. 73, Don W3FPR On 1/13/2019 6:42 PM, Al Lorona wrote: > By the way, whenever Jim says, "...a very good common mode choke at the?feedpoint of an antenna...," he means an antenna fed with coax. For the rest of us, of course, that choke would (should) go at the output of the antenna tuner, whether in the shack or close by. > From w6jhb at me.com Sun Jan 13 19:27:48 2019 From: w6jhb at me.com (James Bennett) Date: Sun, 13 Jan 2019 16:27:48 -0800 Subject: [Elecraft] K3 Speaker Audio Quit Message-ID: <35F44220-48F2-4B9F-8BE2-6EF4CD143B8D@me.com> Well, this is a strange one. Last week my trusty old Yamaha CM500 cans finally got so deteriorated I got tired of picking small pieces of black rubber out of my ears so I looked for a replacement. Bought a Koss SB45 that I used for 15 minutes and quit because they hurt. Today I got a brand new CM500 delivered and hooked it up. What I got was nice audio in the headphones, but nothing to the speaker. I have SPEAKERS set to 2 for diversity RX. When I set SPKR + PH = yes I get audio to the headphones, but nothing to the internal speaker. When SPKR + PH is set to NO, I get nothing. Unplugging the CM500 cable makes no difference. What the heck did I do to cause this? I hope it is something simple/stupid! Any ideas? Jim / W6JHB From farrerfolks at yahoo.com Sun Jan 13 19:28:42 2019 From: farrerfolks at yahoo.com (Mel Farrer) Date: Mon, 14 Jan 2019 00:28:42 +0000 (UTC) Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: References: Message-ID: <1003037914.641681.1547425722220@mail.yahoo.com> One of the things that has been hinted at is the OCF dipole.? One of the really great attributes is that you can adjust the matching impedance of the antenna by moving the feed point away from center.? If you have a SWR of 1.5:1 and the R is 75 and the j is 0, move the feed point away from center and you can find 75 ohms.? Of course you will have to address the 75 ohm, but the match will be 1:1. Mel, K6KBE From: Ray Albers To: Elecraft at mailman.qth.net Sent: Sunday, January 13, 2019 1:58 PM Subject: Re: [Elecraft] Slightly Unbalanced dipole? A friend once told me, "Almost none of us has a balanced dipole." What he meant is, few of us are lucky enough to be able to put a dipole high up and completely in the clear - most of us have to put it up where we can, and one side will be closer to houses, trees, gutters, chain link fences..... than the other. Probably true! 73 Ray K2HYD ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to farrerfolks at yahoo.com From AB1DD at comcast.net Sun Jan 13 19:33:03 2019 From: AB1DD at comcast.net (Carl) Date: Sun, 13 Jan 2019 19:33:03 -0500 Subject: [Elecraft] K3 Speaker Audio Quit In-Reply-To: <35F44220-48F2-4B9F-8BE2-6EF4CD143B8D@me.com> References: <35F44220-48F2-4B9F-8BE2-6EF4CD143B8D@me.com> Message-ID: Jim, Check this, you could have bumped the "1" button! line"> References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> Message-ID: <1972077289.19230005.1547426652756@mail.yahoo.com> You guys keep talking about coax-fed antennas. Yes, although it may be easy to wind coax around a toroid and put it up at the antenna midpoint, that's not so easy with open-wire line. This discussion was very coax-centric and I wanted to open your minds that not everybody feeds their antenna with coax. Balanced feedlines ("window line" or "open-wire" line) can have significant common-mode current. They're not immune to the effect. (I know you know this; I'm saying it for the benefit of all.) A device with high common-mode impedance, located right at the output of the tuner, suppresses common-mode current on a (balanced) feedline. That's it's purpose. I'm in agreement with you about the 1/ cause of common-mode current and the 2/ cure for it. I'm simply saying that for convenience's sake, consider putting the choke at the tuner output. A choke with high Z to common-mode current, external to the tuner, in a non-conductive box, with as short a connection to the tuner as possible, does quite well at suppressing common-mode current. I'll be happy to share my measurements with you.? There is no coax anywhere in my antenna system. So my solution was to put a choke with high impedance to common-mode current right at the output of my antenna tuner. I encourage users of open-wire line to do that. Al? W6LX >>> In all cases of a radiator fed with coax,? From w6jhb at me.com Sun Jan 13 19:47:54 2019 From: w6jhb at me.com (James Bennett) Date: Sun, 13 Jan 2019 16:47:54 -0800 Subject: [Elecraft] K3 Speaker Audio Quit In-Reply-To: References: <35F44220-48F2-4B9F-8BE2-6EF4CD143B8D@me.com> Message-ID: <7631CA8D-B764-479F-B062-45A3759BE3ED@me.com> Carl - gave it a try but didn?t help. Each push of the ?1? button changes it from - to + and I hear a short noise from the internal speaker, but still no audio getting through. > On Jan 13, 2019, at 4:33 PM, Carl wrote: > > Jim, > > Check this, you could have bumped the "1" button! > > > line"> entry. Tap ?1? on the numeric keypad until you see PH.R SW? . The minus sign (-)indicates inverted switch > logic for the jack for the newer KIO3 audio board. Exit the menu and re-save your configuration using K3 Utility. > > -- > Carl > AB1DD > Resistance is futile. > (don't know about reactance, though) > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w6jhb at me.com From jim at audiosystemsgroup.com Sun Jan 13 19:51:11 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Sun, 13 Jan 2019 16:51:11 -0800 Subject: [Elecraft] Non-Resonant Antennas and Chokes In-Reply-To: <1683298941.19225113.1547422933771@mail.yahoo.com> References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> Message-ID: <27431028-a151-ef2b-6607-8f5c4a8cbd1b@audiosystemsgroup.com> On 1/13/2019 3:42 PM, Al Lorona wrote: > By the way, whenever Jim says, "...a very good common mode choke at the?feedpoint of an antenna...," he means an antenna fed with coax. What I actually mean is an antenna matched to its feedline at the operating frequency(ies). > For the rest of us, of course, that choke would (should) go at the output of the antenna tuner, whether in the shack or close by. Actually, for the rest of you, a choke at the shack ONLY reduces coupling common mode current into the shack, but does NOTHING to reduce noise pickup on the line, because the feedline is not isolated from the antenna. Remember -- unless it's choked AT THE FEEDPOINT, that feedline is part of the antenna. If it's ONLY choked at the tuner, the feedline is a wire dangling from the antenna that isn't connected to anything on the other end. AND if the antenna is not matched, a choke that doesn't fry with TX power probably isn't doing anything useful.? For a discussion of this, see "Don't Burn Up Your Balun" by retired Antenna Book editor N6BV, from QST something like 3-4 years ago. Bottom line -- if you live miles from anywhere with no noise sources pumping trash, all-band non-resonant antennas with open wire feeders can be a decent solution -- they transmit just fine if you've done everything right. But they're a sitting duck for noise because there's no practical way to choke them. 73, Jim K9YC From wa8jxm at gmail.com Sun Jan 13 19:58:25 2019 From: wa8jxm at gmail.com (Ken) Date: Sun, 13 Jan 2019 19:58:25 -0500 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: <453CCABD-A744-426F-AEB2-30CF629DFFAD@coastside.net> References: <453CCABD-A744-426F-AEB2-30CF629DFFAD@coastside.net> Message-ID: <3d106889-b4f8-2271-4cf7-329525ec7325@gmail.com> For HF, I doubt that many (if any) dipoles are fully balanced. On higher frequencies (VHF), the antenna can be far enough away from other objects and the ground that it could be considered unaffected by the environment.? But a 40m dipole at 40 feet is less than a half wave from the ground and other objects so i doubt that it is not influenced by it's unbalanced surroundings.? Heck, even the grass is greener on one side than the other (more moisture.) Does it make a difference in operational abilities?? Probably not.?? Sure it might be 3 db better to the north than to the south, but with 6 or 10 db fading, that will never be noticed. Just my opinion. Ken WA8JXM On 1/13/19 3:07 PM, Ron Genovesi wrote: > I was asked a question by a newcomer to HF today. After thinking about it, I realized it had never really occurred to me. So I?ll pass it on to the group and see what the antenna gurus think. > Is there ever a time where a slight imbalance in a dipole could be beneficial? My first inclination was, No, other than the obvious OCF Dipole. But considering that you could have very different conditions under an antenna, both above the ground and under the ground, not to mention a difference in height above ground. What do you think. Could a couple of inches or so difference in the length of the legs of a dipole ever work in your favor? > > Ron Genovesi > n3eta at coastside.net > 541-761-1103 From w0cz at i29.net Sun Jan 13 20:14:57 2019 From: w0cz at i29.net (Kenneth Christiansen) Date: Sun, 13 Jan 2019 19:14:57 -0600 Subject: [Elecraft] New DSP features? In-Reply-To: <5149CB54-CB9B-4B0A-A4F7-C83B7ADE0F05@elecraft.com> References: <5149CB54-CB9B-4B0A-A4F7-C83B7ADE0F05@elecraft.com> Message-ID: H Wayne I like the way the KX3 will let me use the automatic spot on the receiver only when the RIT is on. I have always wished the K3 and K3S would do the same thing as the automatic spot works so well but I do not want to move the transmitter at the same time with the RIT on. That is the only thing I can think of as I love my K3S. 73 Ken W0CZ w0cz at i29.net Sent from my iPad > On Jan 10, 2019, at 9:20 PM, Wayne Burdick wrote: > > Hi all, > > The K3/K3S and KX2/KX3 are SDRs, by definition, because they provide demodulation and modulation features via a DSP chip that is programmable. > > Our DSP algorithms already give the user all the usual features expected of an all-mode transceiver, and then some: > > - DVR > - variable passband filtering & IF shift > - audio peaking filter (APF, for CW) > - auto-spotting and automatic tuning (CW, PSK) > - dual watch (KX2/KX3) > - audio effects > - DTMF (KX3) > - dual-passband filtering for RTTY > - FM subaudible tones > - data decode/encode in various modes > - noise reduction > - RX and TX EQ > - synchronous AM (K3/K3S) > - ESSB > - transmit noise gating > - speech compression > - manual notch filtering > - autonotch > > ...etc. > > That said, here's your chance to dream up *new* DSP features we haven't thought of. All suggestions will be debated by our engineering team, even those that appear radical or implausible at first glance. > > We'll keep this to ourselves, so don't worry about being judged for tossing out some wacky ideas. Let's cast a broad net. > > Please send all correspondence on this topic directly to yours truly. > > 73, > Wayne > N6KR > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wocz at i29.net > From otagiri at gmx.com Sun Jan 13 20:27:03 2019 From: otagiri at gmx.com (bp) Date: Sun, 13 Jan 2019 20:27:03 -0500 Subject: [Elecraft] K3 Lithium Battery Message-ID: Hello, In replacing the lithium battery in a K3, for clock (?), will any other parameters be affected when there is no 3 VDC present?? Is the 3 VDC battery ONLY for the clock in the K3 ? Thanks,? Bob.? K2AYA. From rmcgraw at blomand.net Sun Jan 13 21:01:55 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sun, 13 Jan 2019 20:01:55 -0600 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: <1683298941.19225113.1547422933771@mail.yahoo.com> References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> Message-ID: <2303ae00-109b-876e-6188-9987819222fe@blomand.net> Al: Al et al; I do agree.?? And in fact my 250 ft center fed antenna? with 75 ft of window feedline terminates at the operating position into a Balun Designs 1171T. Then a coax jumper of about 2 ft long, which is actually a model 8232 from The Wireman, Common Mode Choke between the balun and the output of the KAT500 tuner. I was asked recently on another discussion group why I used both a balun and a common mode choke.? The balun itself does not provide adequate common mode choking ability for all bands 160M - 10M.? Since I must use a coax jumper between the balun and tuner, why not just make it a common mode choke.??? All seems reasonable and simple...... like me.? Thus one cable and 2 connectors and a quantity of ferrite beads does double duty. And yes for my coax center fed antennas I use a 1:1 current balun, which is no? more than a length of coax with a number of ferrite beads at the feed point in a PVC enclosure that serves as the center insulator.?? I forget the brands and models.?? They have been up on the tower for several years. 73 Bob, K4TAX On 1/13/2019 5:42 PM, Al Lorona wrote: > By the way, whenever Jim says, "...a very good common mode choke at the?feedpoint of an antenna...," he means an antenna fed with coax. For the rest of us, of course, that choke would (should) go at the output of the antenna tuner, whether in the shack or close by. > > Al? W6LX > > From kl7cw at mtaonline.net Sun Jan 13 21:17:34 2019 From: kl7cw at mtaonline.net (Frederick Dwight) Date: Sun, 13 Jan 2019 17:17:34 -0900 Subject: [Elecraft] Slightly Unbalanced dipole? Message-ID: <20190114021833233@smtp694.redcondor.net> Over a decade ago I did some un scientific experiments to investigate this subject. I set up a test transmitter a few hundred feet away from my rotary 40 meter dipole. I took some field strength measurements with the dipole, then lengthened one half of the dipole perhaps 6 inches and shortened the other half by the same amount. The field strength measurements were the same. I believe I also did the same thing again with something like a one foot lengthening and one foot shortening, and once again no change in the signal strength. I did not write down the SWR, but if my memory serves me correctly there was no significant change in that either. I did have a good feed line choke which may have helped prevent adverse effects from this slightly unbalanced dipole. This was not a scientific test so errors could have easily been something like a dB and also this was done in the near field which is not the best way to make measurements. So I feel confident that an unbalanced condition of a few percent will probably not cause any measurable problems. Rick KL7CW Sent from Mail for Windows 10 From rmcgraw at blomand.net Sun Jan 13 21:19:35 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sun, 13 Jan 2019 20:19:35 -0600 Subject: [Elecraft] New DSP features? In-Reply-To: References: <5149CB54-CB9B-4B0A-A4F7-C83B7ADE0F05@elecraft.com> Message-ID: And for this reason I choose to use SPLIT in CW mode as opposed to RIT.? Thus SPOT only affects the received signal frequency which is VFO A and I can tune VFO A as needed just like RIT. Thus VFO B is always the transmit frequency and is not affected by the SPOT function. 73 Bob, K4TAX On 1/13/2019 7:14 PM, Kenneth Christiansen wrote: > H Wayne > > I like the way the KX3 will let me use the automatic spot on the receiver only when the RIT is on. I have always wished the K3 and K3S would do the same thing as the automatic spot works so well but I do not want to move the transmitter at the same time with the RIT on. > > That is the only thing I can think of as I love my K3S. > 73 > Ken W0CZ > w0cz at i29.net > > > Sent from my iPad > >> On Jan 10, 2019, at 9:20 PM, Wayne Burdick wrote: >> >> Hi all, >> >> The K3/K3S and KX2/KX3 are SDRs, by definition, because they provide demodulation and modulation features via a DSP chip that is programmable. >> >> Our DSP algorithms already give the user all the usual features expected of an all-mode transceiver, and then some: >> >> - DVR >> - variable passband filtering & IF shift >> - audio peaking filter (APF, for CW) >> - auto-spotting and automatic tuning (CW, PSK) >> - dual watch (KX2/KX3) >> - audio effects >> - DTMF (KX3) >> - dual-passband filtering for RTTY >> - FM subaudible tones >> - data decode/encode in various modes >> - noise reduction >> - RX and TX EQ >> - synchronous AM (K3/K3S) >> - ESSB >> - transmit noise gating >> - speech compression >> - manual notch filtering >> - autonotch >> >> ...etc. >> >> That said, here's your chance to dream up *new* DSP features we haven't thought of. All suggestions will be debated by our engineering team, even those that appear radical or implausible at first glance. >> >> We'll keep this to ourselves, so don't worry about being judged for tossing out some wacky ideas. Let's cast a broad net. >> >> Please send all correspondence on this topic directly to yours truly. >> >> 73, >> Wayne >> N6KR >> >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to wocz at i29.net >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From nr4c at widomaker.com Sun Jan 13 21:20:33 2019 From: nr4c at widomaker.com (Nr4c) Date: Sun, 13 Jan 2019 21:20:33 -0500 Subject: [Elecraft] K3 Lithium Battery In-Reply-To: References: Message-ID: Only for the clock. Parameters are stored on non-volatile memory, saved at shutdown. Hence the reason you don?t remove power to turn off the radio. Sent from my iPhone ...nr4c. bill > On Jan 13, 2019, at 8:27 PM, bp wrote: > > Hello, In replacing the lithium battery in a K3, for clock (?), > > will any other parameters be affected when there is no 3 VDC > > present? Is the 3 VDC battery ONLY for the clock in the K3 ? > > Thanks, Bob. K2AYA. > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From w6jhb at me.com Sun Jan 13 21:34:22 2019 From: w6jhb at me.com (James Bennett) Date: Sun, 13 Jan 2019 18:34:22 -0800 Subject: [Elecraft] K3 Speaker Audio Quit - RESOLVED! In-Reply-To: <34E67CD4-93A6-4A6C-8CF8-997F54CD069E@coastside.net> References: <35F44220-48F2-4B9F-8BE2-6EF4CD143B8D@me.com> <34E67CD4-93A6-4A6C-8CF8-997F54CD069E@coastside.net> Message-ID: <33A9D2BB-020D-4A8E-85DC-59DD2817F6B0@me.com> Got fixed!!! Reseated the plugs and all working fine now. Thanks for everyone?s assistance! Jim / W6JHB > On Jan 13, 2019, at 6:11 PM, Brian Hunt wrote: > > I take it that you are plugging the CM500 into the rear jacks. Make sure you have the headphones plug in the headphones jack and not the speakers jack. Yes, they are separate and right next to each other. Don't ask me how I know this. :-) > > If you are using the internal speaker you want SPKRS set to 1. Stereo will appear in the headphones anyway. GL > > Brian, K0DTJ > >> On Jan 13, 2019, at 16:27, James Bennett via Elecraft > wrote: >> >> Well, this is a strange one. Last week my trusty old Yamaha CM500 cans finally got so deteriorated I got tired of picking small pieces of black rubber out of my ears so I looked for a replacement. Bought a Koss SB45 that I used for 15 minutes and quit because they hurt. Today I got a brand new CM500 delivered and hooked it up. >> >> What I got was nice audio in the headphones, but nothing to the speaker. I have SPEAKERS set to 2 for diversity RX. When I set SPKR + PH = yes I get audio to the headphones, but nothing to the internal speaker. When SPKR + PH is set to NO, I get nothing. Unplugging the CM500 cable makes no difference. >> >> What the heck did I do to cause this? I hope it is something simple/stupid! Any ideas? >> >> Jim / W6JHB >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to huntinhmb at coastside.net From barrylazar2 at gmail.com Sun Jan 13 21:40:49 2019 From: barrylazar2 at gmail.com (Barry) Date: Mon, 14 Jan 2019 02:40:49 +0000 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> Message-ID: Don et al, I sense this discussion is targeting the use of a dipole on a single band. What is being missed is that many of us use a dipole cut for for one band and use it for the bands above. What we see are high SWRs on all of the higher frequency bands. We use balanced feeds, open wire or ladder line, as far as we can before we transition to coax. That transition is a good current balun. What this does is control losses due to high SWR and keeps RF currents off the outside of the coax shield. What has been said in previous notes might be true, but they will prevent or make use of balanced feeders quite difficult. An 80 meter dipole used on 40 or 20, for example, is a pretty good antenna. However, it begs to be fed with open wire or equal. That means no balun can be used at the antenna feed point. The exception is to use very expensive coax. :-) 73, Barry K3NDM ------ Original Message ------ From: "Don Wilhelm" To: elecraft at mailman.qth.net Sent: 1/13/2019 6:59:18 PM Subject: Re: [Elecraft] Slightly Unbalanced dipole? >Al, > >If not placed at the antenna feedpoint (up at the antenna), then the feedline may radiate due to common mode current. >For feedlines using parallel conductors, the problem is not as bad if the feedline exits at right angles from the radiator for at least a half wavelength. In that case, the common mode choke can be placed at the junction of the parallel line and coax. > >In all cases of a radiator fed with coax, a good common mode choke at the radiator feedpoint is necessary. Even though the RF on the inside of the coax is balanced, when the coax reaches the radiator, the side of the antenna connected to the coax shield sees two paths. One is the side of the radiator, and the other is the outside of the coax braid - it will dutifully split to follow both paths depending on the impedance of each one. A good common mode choke will prevent the RF current from seeing the coax shield as another conductor. > >A similar situation exists at the transition between parallel feedline and coax. > >73, >Don W3FPR > > >On 1/13/2019 6:42 PM, Al Lorona wrote: >>By the way, whenever Jim says, "...a very good common mode choke at the feedpoint of an antenna...," he means an antenna fed with coax. For the rest of us, of course, that choke would (should) go at the output of the antenna tuner, whether in the shack or close by. >> >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft at mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html >Message delivered to barrylazar2 at gmail.com From alorona at sbcglobal.net Sun Jan 13 21:46:11 2019 From: alorona at sbcglobal.net (Al Lorona) Date: Mon, 14 Jan 2019 02:46:11 +0000 (UTC) Subject: [Elecraft] Non-Resonant Antennas and Chokes In-Reply-To: <27431028-a151-ef2b-6607-8f5c4a8cbd1b@audiosystemsgroup.com> References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> <27431028-a151-ef2b-6607-8f5c4a8cbd1b@audiosystemsgroup.com> Message-ID: <1317843741.19288384.1547433971496@mail.yahoo.com> >>> the feedline is a wire dangling from the antenna? >>> that isn't connected to anything on the other end. That "dangling wire" is actually *two* wires, and the field of one cancels the field of the other for no net radiation or reception -- at least that is the condition we're trying to achieve. That isn't the same as a single wire which by definition would be a common-mode conductor as you correctly say. Once common-mode current is reduced to a small enough value, then the open-wire line isn't radiating nor receiving. But... you gotta measure the common-mode current to know. I have done so. The instrument used to measure this is quite simple. >>> a choke that doesn't fry with TX >>> power probably isn't doing anything useful. A choke dissipates power only in it's resistance, not it's reactance, and only due to the common-mode current. If the parameters of the choke are chosen correctly for the frequency band, and if the choke reduces common-mode current to a low enough value, then the power dissipated in the choke can be very low even when you're operating at high power. A choke that burns up at high power is certainly not inevitable nor normal and can be fixed by re-designing the choke. There are a number of ferrite mixes available and they seem to each be optimum for a slightly different part of the HF spectrum. There's also the twist that permeability is actually a complex quantity (real and imaginary parts) which has a direct bearing on the resistance and reactance of the choke, but I won't go into that at this time. The posting limit is fast approaching; I'll let you have the last word. Al? W6LX From n6tv at arrl.net Sun Jan 13 21:45:58 2019 From: n6tv at arrl.net (Bob Wilson, N6TV) Date: Sun, 13 Jan 2019 18:45:58 -0800 Subject: [Elecraft] [Elecraft-K3] K3S Comparison table finalized (link attached) In-Reply-To: References: Message-ID: The link below no longer works. Where is this document now? 73, Bob, N6TV On Sat, Jul 7, 2018 at 9:05 AM N6KR wrote: > Our detailed, two-page comparison table between the K3S and IC-7610 is now > complete: > > http://www.elecraft.com/K3/K3S_comparison1.pdf > > I?d like to thank everyone who reviewed the table for content and > accuracy, including several who own or have used both radios. Many of your > suggestions were incorporated. As a result, the table now captures those > aspects of the performance, portability, and user interface of the K3S that > are most important to current and prospective owners. > > The table is an excellent starting point. If you still have unanswered > questions about K3S features, theory of operation, etc., feel free to email > me directly. (In fact, if you?re within driving distance of my QTH in > Belmont, CA, stop by for a demo :) > > 73, > Wayne > N6KR > From mpridesti at yahoo.com Sun Jan 13 22:09:48 2019 From: mpridesti at yahoo.com (Mpridesti) Date: Sun, 13 Jan 2019 22:09:48 -0500 Subject: [Elecraft] Software control of RX antenna selection Message-ID: <657AD23F-0D1A-496C-892D-9802AFB5469E@yahoo.com> Have an inquiry with the N1MM logging group but thought I would raise the question here. Is it possible to toggle the RX antenna selection via the Keyboard with N1MM software? Regards, Mark, K1RX From edauer at law.du.edu Sun Jan 13 22:17:09 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Mon, 14 Jan 2019 03:17:09 +0000 Subject: [Elecraft] Slightly unbalanced dipole Message-ID: A nonscientific and fortuitous observation . . . with a result that came as no surprise: A week ago I carefully set up a Buddipole configured as a middling compromise between a vertical dipole and a vertical with one above ground counterpoise wire radial in a lazy L. Some fiddling got it right on resonance at 14.050, with an SWR of less than 1.2 to 1 across 25 Khz of the band, more or less. Using the longer whips and additional arms, it needed no loading coils. The plan was to have it ready for the NAQP. Then, the night before the contest, it snowed. About two inches accumulated on a garage roof some eight feet away from the feed point. It took a reduction of more than a foot of length on just the vertical element to get the antenna -- or maybe it was the garage roof itself -- back to near resonance. And at that the best SWR I could get with a 1 to 1 balun was about 3 to 1, almost flat across more than 60 Khz. I have no idea what the field strength difference was; but it seems clear that given ordinary environmental variations trying to dimension a perfectly balanced radiator in free space canonical for every antenna design is an elusive idea. Even in Denver, where the weather is always exactly what we deserve. Ted, KN1CBR From hidron at hotmail.com Sun Jan 13 23:11:06 2019 From: hidron at hotmail.com (John Hiatt) Date: Mon, 14 Jan 2019 04:11:06 +0000 Subject: [Elecraft] [Elecraft-K3] K3S Comparison table finalized (link attached) In-Reply-To: References: , Message-ID: It appears to be linked from the K3S Transceiver Product page, on the Manuals tab toward the bottom of the page, but here is the current link: ftp://ftp.elecraft.com/K3S/K3S_comparison1.pdf John, KC7DRI ________________________________ From: elecraft-bounces at mailman.qth.net on behalf of Bob Wilson, N6TV Sent: Sunday, January 13, 2019 6:45 PM To: Elecraft Reflector Subject: Re: [Elecraft] [Elecraft-K3] K3S Comparison table finalized (link attached) The link below no longer works. Where is this document now? 73, Bob, N6TV On Sat, Jul 7, 2018 at 9:05 AM N6KR wrote: > Our detailed, two-page comparison table between the K3S and IC-7610 is now > complete: > > http://www.elecraft.com/K3/K3S_comparison1.pdf > > I?d like to thank everyone who reviewed the table for content and > accuracy, including several who own or have used both radios. Many of your > suggestions were incorporated. As a result, the table now captures those > aspects of the performance, portability, and user interface of the K3S that > are most important to current and prospective owners. > > The table is an excellent starting point. If you still have unanswered > questions about K3S features, theory of operation, etc., feel free to email > me directly. (In fact, if you?re within driving distance of my QTH in > Belmont, CA, stop by for a demo :) > > 73, > Wayne > N6KR > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to hidron at hotmail.com From kevinr at coho.net Mon Jan 14 00:02:04 2019 From: kevinr at coho.net (kevinr) Date: Sun, 13 Jan 2019 21:02:04 -0800 Subject: [Elecraft] Elecraft CW Net Report Message-ID: Good Evening, ?? Twenty meters was not easy.? After I worked Ken I called for more check ins and got Roy and another very weak station.? Roy said he needs to keep his snow blower active.? Maybe he'll volunteer for folks east of him.? I kept digging and found only a presence calling me.? Then Brian was relayed in.? I called him once I had a call sign and was able to catch DTJ but little else. Then I dug out K4TO.? Dave was trying to work that new radio smell out of his K3s.? By the time he worked me on 40 meters it was starting to fade. ?? The forty meter net was easier.? Some QSB warble on a few of you but mostly strong signals.? Two reports of injuries today: one the result of an ice fall, and a torn biceps.? Reminds me to ask Wayne to build a circuit to inject endorphins into my right wrist as I send.? I miss too many dits when I flinch.? I remember dad standing behind me telling me about sight picture, windage, elevation, then squeeze.? Worked for .30 cal maybe it will help my thumb on CW.? Then Dale advocated being lazy; who am I to complain? ? On 14049.5 kHz at 2200z: W0CZ - Ken - ND K6XK - Roy - IA K0DTJ - Brian - CA?? relayed, he was below S0 to me though I did get a DTJ a few times. K4TO - Dave - KY ? On 7047 kHz 0000z: AE6JV - Bill - CA K0DTJ - Brian - CA K6XK - Roy - IA W6JHB - Jim - CA W8OV - Dave - TX KG7V - Marv - WA K4TO - Dave - KY K6PJV - Dale - CA ? I ran through my morning litany of turning on the servers, the work stations, and starting the kettle for tea.? When I got to this end of the house I found myself eye to eye with a doe.? I first saw her eating when I booted the server at the west end of the house.? Then again when I booted the server in a room to the south.? But when I turned on this box she caught me.? We tried standing still but time wore on and neither of us was fooling the other.? I sat down then peeked a few times until she was gone. ?? 73, ????? Kevin.? KD5ONS - From jim at audiosystemsgroup.com Mon Jan 14 00:24:20 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Sun, 13 Jan 2019 21:24:20 -0800 Subject: [Elecraft] Non-Resonant Antennas and Chokes In-Reply-To: <1317843741.19288384.1547433971496@mail.yahoo.com> References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> <27431028-a151-ef2b-6607-8f5c4a8cbd1b@audiosystemsgroup.com> <1317843741.19288384.1547433971496@mail.yahoo.com> Message-ID: On 1/13/2019 6:46 PM, Al Lorona wrote: >>>> the feedline is a wire dangling from the antenna >>>> that isn't connected to anything on the other end. > That "dangling wire" is actually *two* wires, and the field of one cancels the field of the other for no net radiation or reception -- at least that is the condition we're trying to achieve. That isn't the same as a single wire which by definition would be a common-mode conductor as you correctly say. You're confusing common mode with differential mode. Differential mode is the nicely equal currents at every point on the line, which do, indeed, cancel. But common mode current is the DIFFERENCE between currents that are not equal. > > Once common-mode current is reduced to a small enough value, then the open-wire line isn't radiating nor receiving. But... you gotta measure the common-mode current to know. I have done so. WHERE are you measuring it? You do realize that, like any antenna, current varies along the wires that make up the antenna. A choke attempts to force the current to zero AT THE POINT WHERE THE CHOKE IS PLACED. You're putting it at the tuner, so it forces current to zero there. But a quarter wave up the feedline, the current reaches a maximum value. > The instrument used to measure this is quite simple. ?I'd be very interested in how you're measuring the current at the antenna feedpoint. :) That is NOT so simple. > >>>> a choke that doesn't fry with TX >>>> power probably isn't doing anything useful. > A choke dissipates power only in it's resistance, not it's reactance, and only due to the common-mode current. If the parameters of the choke are chosen correctly for the frequency band, and if the choke reduces common-mode current to a low enough value, then the power dissipated in the choke can be very low even when you're operating at high power. Yes.? Because power is I squared R, it is changing twice as fast as R is changing, and current is determined by R.? So making R very large makes current very small, which minimizes power dissipated by the choke. > A choke that burns up at high power is certainly not inevitable nor normal and can be fixed by re-designing the choke. There are a number of ferrite mixes available and they seem to each be optimum for a slightly different part of the HF spectrum. There are, in fact, nearly two dozen different ferrite mixes in the Fair-Rite catalog, but only a small fraction of them are useful for common mode chokes on frequencies that we care about. #31 material is the most useful between 160M and 2M; #75 is useful between 630M and 40M. I'm currently investigating a relatively new material that MAY be useful on the higher HF bands, but it's a fairly high Q material, and Fair-Rite's cores are a pretty wide-tolerance part. My recent Cookbook is based on having measured more than 200 cores, then winding chokes on cores that are at the limits of those I measured, and making recommendations on the basis of worst-case results from those cores at the limits. That works for #31, because it's a very low Q part in this range. Well designed ferrite chokes are very low-Q parallel resonant circuits are resonant (or near resonant) in the frequency ranges where they will be used, and it is the very high value of resistance that makes it a good choke. Why? Because a choke that is mostly inductive, with very little resistance, can resonate with the rest of the transmission line in the common mode circuit, INCREASING the common mode current rather that decreasing it. But resistance ALWAYS reduces the common mode current. A choke without a lot of resistance is quite sensitive to the ELECTRICAL length of the feedline, which, of course, increases with increasing frequency.? That's why a coil of coax, or coax wound on a low loss toroid like Fair-Rite #61 is a lousy choke. > There's also the twist that permeability is actually a complex quantity (real and imaginary parts) which has a direct bearing on the resistance and reactance of the choke, but I won't go into that at this time. Yep. Folks can read about it in k9yc.com/RFI-Ham.pdf? which is a tutorial that I wrote more than ten years ago. There are two components, mu' and mu''; the first is what we've always called mu, and describes the inductance; the second tells us the value of a resistance in series with the inductor that, from a circuit analysis point of view, defines the loss coupled to the wire from the core. And both mu' and mu'' both vary (a LOT) with frequency. I'm not going to go beyond this on the reflector, but will refer interested readers to that tutorial, and to my latest work, a major update of the Choke Cookbook published in the first edition of the tutorial. The update is k9yc.com/2018Cookbook.pdf 73, Jim K9YC From k2vco.vic at gmail.com Mon Jan 14 01:12:37 2019 From: k2vco.vic at gmail.com (Vic Rosenthal) Date: Mon, 14 Jan 2019 08:12:37 +0200 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: <1683298941.19225113.1547422933771@mail.yahoo.com> References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> Message-ID: <3F4BE405-0CCB-40F5-8175-938300F416B0@gmail.com> Why would a common mode choke at the antenna feedpoint present more problems than the common practice of feeding a balanced line through a single-ended tuner and balun? I?ve done a lot of experimenting with the latter and have learned that a) the best configuration is with a 1:1 balun, and b) the balun will become lossy and heat up if the impedance it sees is highly reactive. The solution to b) is to cancel the reactance by putting the appropriate opposite reactance in both sides of the line between the balun and the antenna. Of course this means added complexity. I would love to figure out how to make a choke that would work with balanced line at the antenna feedpoint, on multiple bands without any additional components. FWIW I?ve switched to a real balanced tuner (Johnson Matchbox). Victor 4X6GP > On 14 Jan 2019, at 1:42, Al Lorona wrote: > > By the way, whenever Jim says, "...a very good common mode choke at the feedpoint of an antenna...," he means an antenna fed with coax. For the rest of us, of course, that choke would (should) go at the output of the antenna tuner, whether in the shack or close by. > > Al W6LX > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k2vco.vic at gmail.com From W2xj at w2xj.net Mon Jan 14 01:16:09 2019 From: W2xj at w2xj.net (W2xj) Date: Mon, 14 Jan 2019 01:16:09 -0500 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> Message-ID: <748FB84C-6FA2-49C0-9C0B-9080460F31D0@w2xj.net> An array of dipoles are common for high power international broadcast stations. They accept a VSWR of about 2:1 from aprox 20 DB gain curtain arrays They almost always use open wire line. It?s mostly about TX output matching. Sent from my iPad > On Jan 13, 2019, at 9:40 PM, Barry wrote: > > Don et al, > I sense this discussion is targeting the use of a dipole on a single band. What is being missed is that many of us use a dipole cut for for one band and use it for the bands above. What we see are high SWRs on all of the higher frequency bands. We use balanced feeds, open wire or ladder line, as far as we can before we transition to coax. That transition is a good current balun. What this does is control losses due to high SWR and keeps RF currents off the outside of the coax shield. What has been said in previous notes might be true, but they will prevent or make use of balanced feeders quite difficult. > > An 80 meter dipole used on 40 or 20, for example, is a pretty good antenna. However, it begs to be fed with open wire or equal. That means no balun can be used at the antenna feed point. The exception is to use very expensive coax. :-) > > 73, > Barry > K3NDM > > ------ Original Message ------ > From: "Don Wilhelm" > To: elecraft at mailman.qth.net > Sent: 1/13/2019 6:59:18 PM > Subject: Re: [Elecraft] Slightly Unbalanced dipole? > >> Al, >> >> If not placed at the antenna feedpoint (up at the antenna), then the feedline may radiate due to common mode current. >> For feedlines using parallel conductors, the problem is not as bad if the feedline exits at right angles from the radiator for at least a half wavelength. In that case, the common mode choke can be placed at the junction of the parallel line and coax. >> >> In all cases of a radiator fed with coax, a good common mode choke at the radiator feedpoint is necessary. Even though the RF on the inside of the coax is balanced, when the coax reaches the radiator, the side of the antenna connected to the coax shield sees two paths. One is the side of the radiator, and the other is the outside of the coax braid - it will dutifully split to follow both paths depending on the impedance of each one. A good common mode choke will prevent the RF current from seeing the coax shield as another conductor. >> >> A similar situation exists at the transition between parallel feedline and coax. >> >> 73, >> Don W3FPR >> >> >> On 1/13/2019 6:42 PM, Al Lorona wrote: > From k2vco.vic at gmail.com Mon Jan 14 01:19:48 2019 From: k2vco.vic at gmail.com (Vic Rosenthal) Date: Mon, 14 Jan 2019 08:19:48 +0200 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: <1972077289.19230005.1547426652756@mail.yahoo.com> References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> <1972077289.19230005.1547426652756@mail.yahoo.com> Message-ID: I?ve measured common mode current when feeding a balanced line with a good DX Engineering 1:1 balun and an unbalanced tuner, versus a real balanced link-coupled tuner (Johnson Matchbox). To my surprise, the currents are closer to equal with the unbalanced tuner and the balun! But the Matchbox seems quieter. More investigation needed... Victor 4X6GP > On 14 Jan 2019, at 2:44, Al Lorona wrote: > > You guys keep talking about coax-fed antennas. Yes, although it may be easy to wind coax around a toroid and put it up at the antenna midpoint, that's not so easy with open-wire line. This discussion was very coax-centric and I wanted to open your minds that not everybody feeds their antenna with coax. > > Balanced feedlines ("window line" or "open-wire" line) can have significant common-mode current. They're not immune to the effect. (I know you know this; I'm saying it for the benefit of all.) A device with high common-mode impedance, located right at the output of the tuner, suppresses common-mode current on a (balanced) feedline. That's it's purpose. > > I'm in agreement with you about the 1/ cause of common-mode current and the 2/ cure for it. I'm simply saying that for convenience's sake, consider putting the choke at the tuner output. > > A choke with high Z to common-mode current, external to the tuner, in a non-conductive box, with as short a connection to the tuner as possible, does quite well at suppressing common-mode current. I'll be happy to share my measurements with you. > > There is no coax anywhere in my antenna system. So my solution was to put a choke with high impedance to common-mode current right at the output of my antenna tuner. I encourage users of open-wire line to do that. > > Al W6LX > >>>> In all cases of a radiator fed with coax, > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k2vco.vic at gmail.com From hs0zed at gmail.com Mon Jan 14 02:26:48 2019 From: hs0zed at gmail.com (Martin Sole) Date: Mon, 14 Jan 2019 10:26:48 +0300 Subject: [Elecraft] KPA500 & Drake TR7 In-Reply-To: <56e4b153-d9b8-67d6-c487-c20fe3e75694@embarqmail.com> References: <246829685.18794704.1547315972097.ref@mail.yahoo.com> <246829685.18794704.1547315972097@mail.yahoo.com> <1531906306.19187691.1547417945766@mail.yahoo.com> <56e4b153-d9b8-67d6-c487-c20fe3e75694@embarqmail.com> Message-ID: <5e83ce6d-17c2-9a0c-3609-f4d7e569c352@gmail.com> It's worthwhile noting that either adjusting the internal ALC to limit power or providing some external means to control it is really quite essential with some of the early solid state and certainly many of the hybrid radios. Most of these radios had NO proper power control in SSB. Whilst the carrier control can be used to control CW power, on SSB they typically run wide open up to where the ALC kicks in and so only mic gain essentially sets power. Since that is a linear control it will amplify louder noises up to the ALC threshold. So your voice might ordinarily produce a peak of 20-30 watts if you have the control set just so but any noise will produce substantially more. I don't know what the KPA500 says to 100watts + at its input, hopefully it is quite graceful about it. Martin, HS0ZED On 14/01/2019 02:10, Don Wilhelm wrote: > Marcel, > > About the maximum voltage, that might be in the TR7 specifications. > OTOH, start with the pot at a low voltage and increase it until you > achieve the results that you want. > > The K3 EXT ALC default threshold is -4.0 volts, so that may be a good > starting point for your experiments. > > 73, > Don W3FPR > > On 1/13/2019 5:19 PM, Marcel Jorba via Elecraft wrote: >> ? Thanks to all of for your prompt answers >> On CW it works great thanks to the carrier adjustment control >> >> On SSB: it goes to 150W out very easy >> Yes it is just for fun. >> The K3 is great but the TR7 is funny and special. >> >> >> One last question: Someone suggested to use a 9V battery? with a pot >> to inject a constant?negative voltage?in to the TR7. But any idea >> about the maximum voltage? > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to hs0zed at gmail.com From indians at xsmail.com Mon Jan 14 03:54:39 2019 From: indians at xsmail.com (Petr, OK1RP/M0SIS) Date: Mon, 14 Jan 2019 01:54:39 -0700 (MST) Subject: [Elecraft] Battery Low K3 In-Reply-To: <1130670738.17875685.1547408304425@mail.yahoo.com> References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> <53950dff-d2a1-07ef-d237-0db2bda4c4fe@embarqmail.com> <359327140.17879512.1547405775046@mail.yahoo.com> <46aab932-fa47-be88-c959-1cea1d36c900@embarqmail.com> <1130670738.17875685.1547408304425@mail.yahoo.com> Message-ID: <1547456079416-0.post@n2.nabble.com> Hi, finally it means that RTC lithium cell low voltage status is not alerted at all, right? So I should check it or better replace it after 11yrs, right? :) ----- 73 - Petr, OK1RP "Apple & Elecraft freak" B:http://ok1rp.blogspot.com G+:http://goo.gl/w3u2s9 G+: http://goo.gl/gP99xq -- Sent from: http://elecraft.365791.n2.nabble.com/ From btippett at alum.mit.edu Mon Jan 14 05:00:45 2019 From: btippett at alum.mit.edu (Bill W4ZV) Date: Mon, 14 Jan 2019 03:00:45 -0700 (MST) Subject: [Elecraft] New DSP Idea In-Reply-To: References: <187d1530-aa6b-d950-b3b0-61fde20b7349@david-woolley.me.uk> Message-ID: <1547460045479-0.post@n2.nabble.com> David Gilbert wrote > Yes, I agree that the computation needs to be done in the frequency > domain with an FFT.? I have no clue whether or not the K3 and K3s have > enough computational power to do so, but Lyle (Elecraft's DSP guru) > briefly discussed this idea with me when I suggested it several years > ago and he seemed to think it might be feasible.? At the time the K3 > synths wouldn't preserve lock when you changed frequency so it wouldn't > have been very practical back then, but the new synths are fed by the > same oscillator now. You asked a good question Dave. I recall Lyle telling me the same years ago (where is Lyle anyway...buried in K4 firmware?). I've used the NCC-1, MFJ-1025 and ANC-4 over the years to phase parallel staggered Beverages. This is probably beyond the processor in the K3 but it remains a good idea to investigate for the K4. The downside to phasing two identical antennas internally is that you must give up diversity. Using the NCC-1 output for one input to the K3 diversity and a different antenna for the other allows both simultaneously (but for two different purposes). I'm afraid the market for users who want to do this sort of thing may be small, but clearly there is a decent market for noise canceling devices. BTW noise canceling boxes ONLY work well for canceling a single local noise source which requires a nearby sense antenna for one input (groundwave only since propagation introduces constantly shifting relative phase changes). 73, Bill W4ZV P.S. The bottom 2 plots in the link below show what can be done by phasing two parallel staggered Beverages: http://users.vnet.net/btippett/new_page_10.htm -- Sent from: http://elecraft.365791.n2.nabble.com/ From jon.kd3gz at gmail.com Mon Jan 14 05:06:25 2019 From: jon.kd3gz at gmail.com (Derek Brook) Date: Mon, 14 Jan 2019 05:06:25 -0500 Subject: [Elecraft] K2/100 for sale again! Message-ID: I have a nice K2/100, it is setup as the twins with the amp and tuner in the EC2 case.It is packed and ready to go,who ever buys it. This is for sale as is with no returns, because of parts swapping. $1050 I will pay for shipping. Derek/KD3GZ From nr4c at widomaker.com Mon Jan 14 05:27:03 2019 From: nr4c at widomaker.com (Nr4c) Date: Mon, 14 Jan 2019 05:27:03 -0500 Subject: [Elecraft] Battery Low K3 In-Reply-To: <1547456079416-0.post@n2.nabble.com> References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> <53950dff-d2a1-07ef-d237-0db2bda4c4fe@embarqmail.com> <359327140.17879512.1547405775046@mail.yahoo.com> <46aab932-fa47-be88-c959-1cea1d36c900@embarqmail.com> <1130670738.17875685.1547408304425@mail.yahoo.com> <1547456079416-0.post@n2.nabble.com> Message-ID: Good idea Sent from my iPhone ...nr4c. bill > On Jan 14, 2019, at 3:54 AM, Petr, OK1RP/M0SIS wrote: > > Hi, > > finally it means that RTC lithium cell low voltage status is not alerted at > all, right? > So I should check it or better replace it after 11yrs, right? :) > > > > > > ----- > 73 - Petr, OK1RP > "Apple & Elecraft freak" > B:http://ok1rp.blogspot.com > G+:http://goo.gl/w3u2s9 > G+: http://goo.gl/gP99xq > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From graziano at roccon.com Mon Jan 14 06:31:30 2019 From: graziano at roccon.com (Graziano Roccon (IW2NOY)) Date: Mon, 14 Jan 2019 12:31:30 +0100 Subject: [Elecraft] Query for new DSP features In-Reply-To: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> References: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> Message-ID: <366340f26268b8eb93be3e91fe5da50f@roccon.com> Hello all, Hello Wayne, following Mike KF6KXG suggestion, i would like to have a more intuitive Noise Reduction (NR). I used several last Icom or Yaesu model and their NR are more intuitive and easy to use, without loose efficiency and without ruin the signal audio and strenght. Especially the Yaesu, in models like the Ftdx3000, Ftdx5000, FT-991: where you simply push the DNR button and everything goes away except the signal that you can easily hear in the silence. I love my K3s for many aspects and i will never change it for another radio but, the NR function always disappointed me. Maybe is my problem but there are too much settings and often doesn't work as aspected, also it need to change settings when condition change and is difficult find one setting for all. I would like to have and NR with just the level of intervention and that work like the last Yaesu, where the noise goes away and signal remain in the silence, also without changing the strenght of the signal and without causing distortions on the audio. I had a FTdx3000 before the K3s and the only thing i am really missing is the Yaesu DNR, all the rest is done also by the K3s and better than the 3000. I hope could be interesting and that can help and... happen :-) Thanks a lot, Graziano Roccon IW2NOY PS Why not... a more intuitive digital mode name in the menu are welcome :-) l 2019-01-12 05:38 Mike Lichtman via Elecraft ha scritto: > Wayne, > I would like to see an improved Noise Reduction that doesn?t lower > the volume or distort as much. Also the digital mode decode has never > really worked well for me and, yes, > I read the manual about using it. Could you have the digital choices > RTTY, PSK31, etc. instead of the current settings like FSK, data, etc? > Pie in the sky thought ? Having the radio identify the type of digital > signal being received with a word in the display and automatically > change modes/settings to accommodate it. 73 Mike KF6KXG > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to graziano at roccon.com From john at kn5l.net Mon Jan 14 06:32:32 2019 From: john at kn5l.net (John Oppenheimer) Date: Mon, 14 Jan 2019 05:32:32 -0600 Subject: [Elecraft] Non-Resonant Antennas and Chokes In-Reply-To: References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> <27431028-a151-ef2b-6607-8f5c4a8cbd1b@audiosystemsgroup.com> <1317843741.19288384.1547433971496@mail.yahoo.com> Message-ID: <6e02eb18-af5a-490f-d813-dde97587d910@kn5l.net> On 1/13/19 11:24 PM, Jim Brown wrote: >> The instrument used to measure this is quite simple. > ?I'd be very interested in how you're measuring the current at the > antenna feedpoint. :) That is NOT so simple. The common mode current can be measured 1/2 wavelength from the feedpoint. Here is an example: https://www.kn5l.net/Balun-CM/ MFJ has a clamp-on current meter which can be used. John KN5L From hs0zed at gmail.com Mon Jan 14 06:51:35 2019 From: hs0zed at gmail.com (Martin Sole) Date: Mon, 14 Jan 2019 14:51:35 +0300 Subject: [Elecraft] New DSP features? In-Reply-To: <5149CB54-CB9B-4B0A-A4F7-C83B7ADE0F05@elecraft.com> References: <5149CB54-CB9B-4B0A-A4F7-C83B7ADE0F05@elecraft.com> Message-ID: I find the NB in the K3 is very versatile and can usually make a difference. I rarely use the NR, never found it much use, that goes for other rigs too, might just be me. The APF was a great addition to the K3 firmware but I feel it could stand some enhancement, adjustable BW would be very nice and something to offset some of the artefacts I feel it adds as it is right now.I don't think it needs adjustable centre freq for use as a CW peaking filter as only the one freq is of interested. When the Orion added APF to its firmware it was variable from 300Hz down to 10Hz with adjustable centre frequency. Not so much for CW but a surprisingly useful SSB addition. Much like a sweepable EQ it can often be just the thing for enhancing a rough voice signal down in the noise. Better decode capability for some of the more recent digital modes, FT8 would seem an obvious one but how? Maybe on screen with a P3? Has DSP hardware advanced significantly since the K3/S was designed? Maybe a replacement module with more recent DSP devices might allow even more possibilities. But maybe that's K4 land :) Martin, HS0ZED On 11/01/2019 06:20, Wayne Burdick wrote: > Hi all, > > The K3/K3S and KX2/KX3 are SDRs, by definition, because they provide demodulation and modulation features via a DSP chip that is programmable. > > Our DSP algorithms already give the user all the usual features expected of an all-mode transceiver, and then some: > > - DVR > - variable passband filtering & IF shift > - audio peaking filter (APF, for CW) > - auto-spotting and automatic tuning (CW, PSK) > - dual watch (KX2/KX3) > - audio effects > - DTMF (KX3) > - dual-passband filtering for RTTY > - FM subaudible tones > - data decode/encode in various modes > - noise reduction > - RX and TX EQ > - synchronous AM (K3/K3S) > - ESSB > - transmit noise gating > - speech compression > - manual notch filtering > - autonotch > > ...etc. > > That said, here's your chance to dream up *new* DSP features we haven't thought of. All suggestions will be debated by our engineering team, even those that appear radical or implausible at first glance. > > We'll keep this to ourselves, so don't worry about being judged for tossing out some wacky ideas. Let's cast a broad net. > > Please send all correspondence on this topic directly to yours truly. > > 73, > Wayne > N6KR > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to hs0zed at gmail.com From wes_n7ws at triconet.org Mon Jan 14 07:29:51 2019 From: wes_n7ws at triconet.org (Wes Stewart) Date: Mon, 14 Jan 2019 05:29:51 -0700 Subject: [Elecraft] New DSP Idea In-Reply-To: <1547460045479-0.post@n2.nabble.com> References: <187d1530-aa6b-d950-b3b0-61fde20b7349@david-woolley.me.uk> <1547460045479-0.post@n2.nabble.com> Message-ID: Lyle is retired here in Tucson. Wes? N7WS On 1/14/2019 3:00 AM, Bill W4ZV wrote: > David Gilbert wrote >> Yes, I agree that the computation needs to be done in the frequency >> domain with an FFT.? I have no clue whether or not the K3 and K3s have >> enough computational power to do so, but Lyle (Elecraft's DSP guru) >> briefly discussed this idea with me when I suggested it several years >> ago and he seemed to think it might be feasible.? At the time the K3 >> synths wouldn't preserve lock when you changed frequency so it wouldn't >> have been very practical back then, but the new synths are fed by the >> same oscillator now. > You asked a good question Dave. I recall Lyle telling me the same years ago > (where is Lyle anyway...buried in K4 firmware?). I've used the NCC-1, > MFJ-1025 and ANC-4 over the years to phase parallel staggered Beverages. > This is probably beyond the processor in the K3 but it remains a good idea > to investigate for the K4. The downside to phasing two identical antennas > internally is that you must give up diversity. Using the NCC-1 output for > one input to the K3 diversity and a different antenna for the other allows > both simultaneously (but for two different purposes). > > I'm afraid the market for users who want to do this sort of thing may be > small, but clearly there is a decent market for noise canceling devices. > BTW noise canceling boxes ONLY work well for canceling a single local noise > source which requires a nearby sense antenna for one input (groundwave only > since propagation introduces constantly shifting relative phase changes). > > 73, Bill W4ZV > > P.S. The bottom 2 plots in the link below show what can be done by phasing > two parallel staggered Beverages: > http://users.vnet.net/btippett/new_page_10.htm From dave at nk7z.net Mon Jan 14 08:14:35 2019 From: dave at nk7z.net (Dave Cole (NK7Z)) Date: Mon, 14 Jan 2019 05:14:35 -0800 Subject: [Elecraft] Non-Resonant Antennas and Chokes In-Reply-To: References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> <27431028-a151-ef2b-6607-8f5c4a8cbd1b@audiosystemsgroup.com> <1317843741.19288384.1547433971496@mail.yahoo.com> Message-ID: It is one hell of a nice read Jim, THANK YOU for publishing it. 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Contest ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 1/13/19 9:24 PM, Jim Brown wrote: > I'm not going to go beyond this on the reflector, but will refer > interested readers to that tutorial, and to my latest work, a major > update of the Choke Cookbook published in the first edition of the > tutorial. The update is k9yc.com/2018Cookbook.pdf > > 73, Jim K9YC From jstengrevics at comcast.net Mon Jan 14 08:19:57 2019 From: jstengrevics at comcast.net (John Stengrevics) Date: Mon, 14 Jan 2019 08:19:57 -0500 Subject: [Elecraft] New DSP Idea In-Reply-To: References: <187d1530-aa6b-d950-b3b0-61fde20b7349@david-woolley.me.uk> <1547460045479-0.post@n2.nabble.com> Message-ID: <6D6C8E6B-EFBF-400E-B2D0-ED58FFF4114A@comcast.net> Given the increased noise levels most hams face, I emailed Wayne to ask if improved noise reduction & noise blanking were on their project list. He said no. So, any improvements are apparently a long way off. John WA1EAZ > On Jan 14, 2019, at 7:29 AM, Wes Stewart wrote: > > Lyle is retired here in Tucson. > > Wes N7WS > > On 1/14/2019 3:00 AM, Bill W4ZV wrote: >> David Gilbert wrote >>> Yes, I agree that the computation needs to be done in the frequency >>> domain with an FFT. I have no clue whether or not the K3 and K3s have >>> enough computational power to do so, but Lyle (Elecraft's DSP guru) >>> briefly discussed this idea with me when I suggested it several years >>> ago and he seemed to think it might be feasible. At the time the K3 >>> synths wouldn't preserve lock when you changed frequency so it wouldn't >>> have been very practical back then, but the new synths are fed by the >>> same oscillator now. >> You asked a good question Dave. I recall Lyle telling me the same years ago >> (where is Lyle anyway...buried in K4 firmware?). I've used the NCC-1, >> MFJ-1025 and ANC-4 over the years to phase parallel staggered Beverages. >> This is probably beyond the processor in the K3 but it remains a good idea >> to investigate for the K4. The downside to phasing two identical antennas >> internally is that you must give up diversity. Using the NCC-1 output for >> one input to the K3 diversity and a different antenna for the other allows >> both simultaneously (but for two different purposes). >> >> I'm afraid the market for users who want to do this sort of thing may be >> small, but clearly there is a decent market for noise canceling devices. >> BTW noise canceling boxes ONLY work well for canceling a single local noise >> source which requires a nearby sense antenna for one input (groundwave only >> since propagation introduces constantly shifting relative phase changes). >> >> 73, Bill W4ZV >> >> P.S. The bottom 2 plots in the link below show what can be done by phasing >> two parallel staggered Beverages: >> http://users.vnet.net/btippett/new_page_10.htm > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jstengrevics at comcast.net From bob.novas at verizon.net Mon Jan 14 09:04:21 2019 From: bob.novas at verizon.net (Bob Novas) Date: Mon, 14 Jan 2019 09:04:21 -0500 Subject: [Elecraft] Elecraft Digest, Vol 177, Issue 23 In-Reply-To: References: Message-ID: <021901d4ac12$0ca86ba0$25f942e0$@verizon.net> http://k9yc.com/ChokesTLData.pdf gets a 404 not found error. I'd be interested in seeing the document. Bob - W3DK -----Original Message----- From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of elecraft-request at mailman.qth.net Sent: Monday, January 14, 2019 6:52 AM To: elecraft at mailman.qth.net Subject: Elecraft Digest, Vol 177, Issue 23 Send Elecraft mailing list submissions to elecraft at mailman.qth.net To subscribe or unsubscribe via the World Wide Web, visit http://mailman.qth.net/mailman/listinfo/elecraft or, via email, send a message with subject or body 'help' to elecraft-request at mailman.qth.net You can reach the person managing the list at elecraft-owner at mailman.qth.net When replying, please edit your Subject line so it is more specific than "Re: Contents of Elecraft digest..." From barrylazar2 at gmail.com Mon Jan 14 12:02:38 2019 From: barrylazar2 at gmail.com (Barry) Date: Mon, 14 Jan 2019 17:02:38 +0000 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: <3F4BE405-0CCB-40F5-8175-938300F416B0@gmail.com> References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> <3F4BE405-0CCB-40F5-8175-938300F416B0@gmail.com> Message-ID: Vic, The simple answer is that the common mode chokes available to hams are of the unbalanced type. That means they are designed to be unbalanced in to unbalanced out. Some companies make baluns that are both current baluns that act for choking common mode currents and transform a balanced load to an unbalanced load. If you place a common mode choke at the antenna feed point, the system will be unbalanced, usually. Next, most tuners that have built in baluns use voltage type baluns and can be less than good in a high SWR situation. However, using a good current balun at or neat the tuner usually prevents common mode issues. However nothing is 100% when dealing with RF. Putting reactance in the line to counter what is already there is good when dealing with the impedance, but you are correct about complexity. The very simplest configuration that I know in a multiband situation is to erect a dipole for the lowest frequency to be used and feeding it with ladder line, or equal. Where you enter the house mount a 4:1 current balun and connect coax from there to the tuner. As long as your tuner can handle the SWR and the coax run is short, you need not worry about losses due to SWR; I am speaking to the 1 or so db losses over just the transmission line loss. If you use the tuner in your Elecraft gear, I just wouldn't worry, period. Elecraft tuners appear to be able to handle anything I've put in my backyard so far. The Johnson matchbox line of tuners were excellent. I no longer have mine; selling mine was a less than brilliant move on my part, in retrospect. However, I don't usually recommend this approach. Getting through some of the walls/windows in the houses around here with balanced line can be problematic. So, I usually recommend the approach above for overall simplicity and assurance of maintaining feed balance. 73, Barry K3NDM ------ Original Message ------ From: "Vic Rosenthal" To: "Al Lorona" Cc: elecraft at mailman.qth.net Sent: 1/14/2019 1:12:37 AM Subject: Re: [Elecraft] Slightly Unbalanced dipole? >Why would a common mode choke at the antenna feedpoint present more problems than the common practice of feeding a balanced line through a single-ended tuner and balun? >I?ve done a lot of experimenting with the latter and have learned that a) the best configuration is with a 1:1 balun, and b) the balun will become lossy and heat up if the impedance it sees is highly reactive. The solution to b) is to cancel the reactance by putting the appropriate opposite reactance in both sides of the line between the balun and the antenna. Of course this means added complexity. >I would love to figure out how to make a choke that would work with balanced line at the antenna feedpoint, on multiple bands without any additional components. >FWIW I?ve switched to a real balanced tuner (Johnson Matchbox). > >Victor 4X6GP > >> On 14 Jan 2019, at 1:42, Al Lorona wrote: >> >> By the way, whenever Jim says, "...a very good common mode choke at the feedpoint of an antenna...," he means an antenna fed with coax. For the rest of us, of course, that choke would (should) go at the output of the antenna tuner, whether in the shack or close by. >> >> Al W6LX >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to k2vco.vic at gmail.com >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft at mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html >Message delivered to barrylazar2 at gmail.com From ardrhi at gmail.com Mon Jan 14 12:12:16 2019 From: ardrhi at gmail.com (Gwen Patton) Date: Mon, 14 Jan 2019 12:12:16 -0500 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> <3F4BE405-0CCB-40F5-8175-938300F416B0@gmail.com> Message-ID: I got this unbalanced common-mode choke from Amateur Radio Supplies. It completely clobbered all of the "bite" I was getting in the shack, and is keeping stray RF out of my bench computer. I got it when I was having trouble with the keyboard I had connected to my PX3 -- when I transmitted CW or PSK31, the RF would cause random characters to get stuffed into the keyboard buffer, and the transmission wouldn't stop until I stopped it manually. It helped, but the way I finally got around it was by using a 2.5ghz non-Bluetooth wireless keyboard for the PX3. Any wired keyboard I used would result in garbage in the transmission as the RF induced current in the keyboard cable. https://www.amateurradiosupplies.com/product-p/iso-max.htm 73, Gwen, NG3P On Mon, Jan 14, 2019 at 12:03 PM Barry wrote: > Vic, > The simple answer is that the common mode chokes available to hams > are of the unbalanced type. That means they are designed to be > unbalanced in to unbalanced out. Some companies make baluns that are > both current baluns that act for choking common mode currents and > transform a balanced load to an unbalanced load. If you place a common > mode choke at the antenna feed point, the system will be unbalanced, > usually. > > Next, most tuners that have built in baluns use voltage type baluns > and can be less than good in a high SWR situation. However, using a good > current balun at or neat the tuner usually prevents common mode issues. > However nothing is 100% when dealing with RF. > > Putting reactance in the line to counter what is already there is > good when dealing with the impedance, but you are correct about > complexity. The very simplest configuration that I know in a multiband > situation is to erect a dipole for the lowest frequency to be used and > feeding it with ladder line, or equal. Where you enter the house mount a > 4:1 current balun and connect coax from there to the tuner. As long as > your tuner can handle the SWR and the coax run is short, you need not > worry about losses due to SWR; I am speaking to the 1 or so db losses > over just the transmission line loss. If you use the tuner in your > Elecraft gear, I just wouldn't worry, period. Elecraft tuners appear to > be able to handle anything I've put in my backyard so far. > > The Johnson matchbox line of tuners were excellent. I no longer have > mine; selling mine was a less than brilliant move on my part, in > retrospect. However, I don't usually recommend this approach. Getting > through some of the walls/windows in the houses around here with > balanced line can be problematic. So, I usually recommend the approach > above for overall simplicity and assurance of maintaining feed balance. > > 73, > Barry > K3NDM > > ------ Original Message ------ > From: "Vic Rosenthal" > To: "Al Lorona" > Cc: elecraft at mailman.qth.net > Sent: 1/14/2019 1:12:37 AM > Subject: Re: [Elecraft] Slightly Unbalanced dipole? > > >Why would a common mode choke at the antenna feedpoint present more > problems than the common practice of feeding a balanced line through a > single-ended tuner and balun? > >I?ve done a lot of experimenting with the latter and have learned that a) > the best configuration is with a 1:1 balun, and b) the balun will become > lossy and heat up if the impedance it sees is highly reactive. The solution > to b) is to cancel the reactance by putting the appropriate opposite > reactance in both sides of the line between the balun and the antenna. Of > course this means added complexity. > >I would love to figure out how to make a choke that would work with > balanced line at the antenna feedpoint, on multiple bands without any > additional components. > >FWIW I?ve switched to a real balanced tuner (Johnson Matchbox). > > > >Victor 4X6GP > > > >> On 14 Jan 2019, at 1:42, Al Lorona wrote: > >> > >> By the way, whenever Jim says, "...a very good common mode choke at > the feedpoint of an antenna...," he means an antenna fed with coax. For the > rest of us, of course, that choke would (should) go at the output of the > antenna tuner, whether in the shack or close by. > >> > >> Al W6LX > >> > >> > >> ______________________________________________________________ > >> Elecraft mailing list > >> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >> Help: http://mailman.qth.net/mmfaq.htm > >> Post: mailto:Elecraft at mailman.qth.net > >> > >> This list hosted by: http://www.qsl.net > >> Please help support this email list: http://www.qsl.net/donate.html > >> Message delivered to k2vco.vic at gmail.com > >______________________________________________________________ > >Elecraft mailing list > >Home: http://mailman.qth.net/mailman/listinfo/elecraft > >Help: http://mailman.qth.net/mmfaq.htm > >Post: mailto:Elecraft at mailman.qth.net > > > >This list hosted by: http://www.qsl.net > >Please help support this email list: http://www.qsl.net/donate.html > >Message delivered to barrylazar2 at gmail.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to ardrhi at gmail.com -- -+-+-+-+- Jenny Everywhere's Infinite: Quark Time http://quarktime.net From frantz at pwpconsult.com Mon Jan 14 12:31:49 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Mon, 14 Jan 2019 09:31:49 -0800 Subject: [Elecraft] Battery Low K3 In-Reply-To: <1547456079416-0.post@n2.nabble.com> Message-ID: I don't use the RTC for much, so I let it get way off NIST time. What I most worry about is the battery running down and leaking inside the K3. I suppose on the rare times I run the utility, I should check to see if the clock is still running. If it runs out of juice, the replace the battery. 73 Bill AE6JV On 1/14/19 at 12:54 AM, indians at xsmail.com (Petr, OK1RP/M0SIS) wrote: >finally it means that RTC lithium cell low voltage status is not alerted at >all, right? >So I should check it or better replace it after 11yrs, right? :) ----------------------------------------------------------------------- Bill Frantz | I don't have high-speed | Periwinkle (408)356-8506 | internet. I have DSL. | 16345 Englewood Ave www.pwpconsult.com | | Los Gatos, CA 95032 From frantz at pwpconsult.com Mon Jan 14 12:42:30 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Mon, 14 Jan 2019 09:42:30 -0800 Subject: [Elecraft] New DSP Idea In-Reply-To: <6D6C8E6B-EFBF-400E-B2D0-ED58FFF4114A@comcast.net> Message-ID: The NR change I would like is "just" a UI change. If I could temporarily set up two knobs to change the two parameters it would be a lot easier to play with the settings and find the best combo. Having one knob means having to remember how well a setting several twists away works; much harder. 73 Bill AE6JV On 1/14/19 at 5:19 AM, jstengrevics at comcast.net (John Stengrevics) wrote: >Given the increased noise levels most hams face, I emailed >Wayne to ask if improved noise reduction & noise blanking were >on their project list. He said no. So, any improvements are >apparently a long way off. ----------------------------------------------------------------------- Bill Frantz | Ham radio contesting is a | Periwinkle (408)356-8506 | contact sport. | 16345 Englewood Ave www.pwpconsult.com | - Ken Widelitz K6LA / VY2TT | Los Gatos, CA 95032 From pubx1 at af2z.net Mon Jan 14 12:51:42 2019 From: pubx1 at af2z.net (Drew AF2Z) Date: Mon, 14 Jan 2019 12:51:42 -0500 Subject: [Elecraft] New DSP Idea In-Reply-To: References: Message-ID: Yes, perhaps the RIT knob could be employed to step the NR selection between F1, F2, F3, etc. The RIT control is not used for anything while the NR display is engaged. 73, Drew AF2Z On 01/14/19 12:42, Bill Frantz wrote: > The NR change I would like is "just" a UI change. If I could temporarily > set up two knobs to change the two parameters it would be a lot easier > to play with the settings and find the best combo. Having one knob means > having to remember how well a setting several twists away works; much > harder. > > 73 Bill AE6JV > > On 1/14/19 at 5:19 AM, jstengrevics at comcast.net (John Stengrevics) wrote: > >> Given the increased noise levels most hams face, I emailed Wayne to >> ask if improved noise reduction & noise blanking were on their project >> list.? He said no.? So, any improvements are apparently a long way off. > ----------------------------------------------------------------------- > Bill Frantz??????? | Ham radio contesting is a??? | Periwinkle > (408)356-8506????? | contact sport.?????????????? | 16345 Englewood Ave > www.pwpconsult.com |? - Ken Widelitz K6LA / VY2TT | Los Gatos, CA 95032 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to pubx1 at af2z.net > From indians at xsmail.com Mon Jan 14 13:03:45 2019 From: indians at xsmail.com (Petr, OK1RP/M0SIS) Date: Mon, 14 Jan 2019 11:03:45 -0700 (MST) Subject: [Elecraft] Battery Low K3 In-Reply-To: References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> <53950dff-d2a1-07ef-d237-0db2bda4c4fe@embarqmail.com> <359327140.17879512.1547405775046@mail.yahoo.com> <46aab932-fa47-be88-c959-1cea1d36c900@embarqmail.com> <1130670738.17875685.1547408304425@mail.yahoo.com> <1547456079416-0.post@n2.nabble.com> Message-ID: <1547489025733-0.post@n2.nabble.com> Ups, Bill you scarred me with leaking the cell inside of my K3...:) OK, OK, OK, I will check it tonite... ----- 73 - Petr, OK1RP "Apple & Elecraft freak" B:http://ok1rp.blogspot.com G+:http://goo.gl/w3u2s9 G+: http://goo.gl/gP99xq -- Sent from: http://elecraft.365791.n2.nabble.com/ From jomatlock at gmail.com Mon Jan 14 13:43:57 2019 From: jomatlock at gmail.com (Johnny Matlock) Date: Mon, 14 Jan 2019 12:43:57 -0600 Subject: [Elecraft] K2 upgrades? Message-ID: I bought a older K2 today. Serial number below 1000. Which upgrades are recommended by the group? Thanks 73 Johnny AC0BQ -- Check out the 4SQRP website at 4sqrp.com From donwilh at embarqmail.com Mon Jan 14 13:59:34 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Mon, 14 Jan 2019 13:59:34 -0500 Subject: [Elecraft] K2 upgrades? In-Reply-To: References: Message-ID: Johnny, Since any builder can upgrade a K2 by installing the A to B Mod plus any other associated mod kits, you will have to determine the level by inspection. Download the K2ATOB instructions and look at all the associated upgrade kits listed on the first page - then download the instructions for each of those upgrade kits. Remove the top and bottom covers from your K2 and compare your physical board with the instructions for each upgrade kit. Often owners have installed one or two upgrade kits from the full A to B upgrade, but have not done others. A fully upgraded K2 can perform just like a newly built kit. That fact makes it difficult to predict what upgrades are still needed other than inspection of the parts installed. 73, Don W3FPR On 1/14/2019 1:43 PM, Johnny Matlock wrote: > I bought a older K2 today. > Serial number below 1000. > > Which upgrades are recommended by the group? From jim at audiosystemsgroup.com Mon Jan 14 14:21:30 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Mon, 14 Jan 2019 11:21:30 -0800 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> <3F4BE405-0CCB-40F5-8175-938300F416B0@gmail.com> Message-ID: <04874f98-fe29-52ec-e405-d9aaf02149fd@audiosystemsgroup.com> On 1/14/2019 9:02 AM, Barry wrote: > The simple answer is that the common mode chokes available to hams are > of the unbalanced type. Huh? We're hams -- we're not limited to products we can buy! And we can build far better than we can buy. In 2010, I published the design for a common mode choke to cover the HF bands using a pair of #12 THHN wound on a 2.4-in o.d. #31 toroid.? k9yc.com/2018Cookbook.pdf has dozens of designs using THHN, teflon pairs, and RG400. These chokes are fairly easy to wind, and all can be built for less than about $35, including connectors. A member of our contest club is building a serious contest station, and asked me to measure a "balun" from a well-known manufacturer. It came in a nice weatherproof non-metallic enclosure, and was nicely made. But it looked NOTHING like the data sheet that WAS on the website at the time (and which has been removed since I showed my data to a few engineering colleagues, one of whom obviously asked the mfr about it.) The problem with choking a two-wire feedline is NOT one of balance -- if it's a good choke, the choke takes "balance" out of the equation. What matters is dissipation in the choke due to excessive voltage or current that is present because the antenna is not matched to the line. 73, Jim K9YC From k2vco.vic at gmail.com Mon Jan 14 14:43:24 2019 From: k2vco.vic at gmail.com (Victor Rosenthal 4X6GP) Date: Mon, 14 Jan 2019 21:43:24 +0200 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: <04874f98-fe29-52ec-e405-d9aaf02149fd@audiosystemsgroup.com> References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> <3F4BE405-0CCB-40F5-8175-938300F416B0@gmail.com> <04874f98-fe29-52ec-e405-d9aaf02149fd@audiosystemsgroup.com> Message-ID: <22e9418d-7475-8f15-2d4c-db6136885756@gmail.com> I agree. And I maintain that the problem is exactly the same with the common solution of a single-ended tuner feeding a balanced line through a balun. If there is a big mismatch the choke will get hot. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 14 Jan 2019 21:21, Jim Brown wrote: > The problem with choking a two-wire feedline is NOT one of balance -- if > it's a good choke, the choke takes "balance" out of the equation. What > matters is dissipation in the choke due to excessive voltage or current > that is present because the antenna is not matched to the line. From bill at w2blc.net Mon Jan 14 14:49:58 2019 From: bill at w2blc.net (bill) Date: Mon, 14 Jan 2019 14:49:58 -0500 Subject: [Elecraft] New DSP Idea In-Reply-To: <6D6C8E6B-EFBF-400E-B2D0-ED58FFF4114A@comcast.net> References: <6D6C8E6B-EFBF-400E-B2D0-ED58FFF4114A@comcast.net> Message-ID: On 1/14/19 at 5:19 AM, jstengrev... at comcast.net (John Stengrevics) wrote: Given the increased noise levels most hams face, I emailed Wayne to ask if improved noise reduction & noise blanking were on their project list. He said no.? So, any improvements are apparently a long way off. WOW - that is indeed disappointing. Guess that pretty much negates this thread. There were some good ideas put forth - and much of it software (updatable??). Is the K3 now a developmental orphan? Bill W2BLC From donwilh at embarqmail.com Mon Jan 14 15:11:49 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Mon, 14 Jan 2019 15:11:49 -0500 Subject: [Elecraft] New DSP Idea In-Reply-To: References: <6D6C8E6B-EFBF-400E-B2D0-ED58FFF4114A@comcast.net> Message-ID: Bill, Certainly not - any firmware changes to the K3S are applicable to the K3 as well. But the K3 is now 10 years old, and there is now not much new engineering effort going on to make improvements. If problems develop, they will certainly be addresses - perhaps even with top priority depending on how serious. Even the 20 year old K2 still has a lot of attention at Elecraft and is still being actively sold. Even the discontinued products are being fully addressed by Elecraft support. Yes, I am certain there is considerable effort on some new product (there always is), and K3 improvements have simply been moved to a lower priority. 73, Don W3FPR On 1/14/2019 2:49 PM, bill wrote: > > Is the K3 now a developmental orphan? > From barrylazar2 at gmail.com Mon Jan 14 15:26:45 2019 From: barrylazar2 at gmail.com (Barry) Date: Mon, 14 Jan 2019 20:26:45 +0000 Subject: [Elecraft] Slightly Unbalanced dipole? In-Reply-To: <04874f98-fe29-52ec-e405-d9aaf02149fd@audiosystemsgroup.com> References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> <3F4BE405-0CCB-40F5-8175-938300F416B0@gmail.com> <04874f98-fe29-52ec-e405-d9aaf02149fd@audiosystemsgroup.com> Message-ID: Jim, Your comment about hams not being limited, " Huh? We're hams -- we're not limited to products we can buy! And we can build far better than we can buy.". you may be correct, but from what I see, the majority of hams, at least around here, buy what they need. Even of our more serious hams buy baluns and chokes from sources like DX Engineering and Balun Designs; few are really building these easy to make devices. There are exceptions to what I just said, but in the main, more hams are buying rather than building. Sorry, but that's what it looks like to me. I do like your paper and have it. I also wish that you continue to get more hams to actually build more things. 73, Barry K3NDM ------ Original Message ------ From: "Jim Brown" To: elecraft at mailman.qth.net Sent: 1/14/2019 2:21:30 PM Subject: Re: [Elecraft] Slightly Unbalanced dipole? >On 1/14/2019 9:02 AM, Barry wrote: >>The simple answer is that the common mode chokes available to hams are of the unbalanced type. > >Huh? We're hams -- we're not limited to products we can buy! And we can build far better than we can buy. In 2010, I published the design for a common mode choke to cover the HF bands using a pair of #12 THHN wound on a 2.4-in o.d. #31 toroid. k9yc.com/2018Cookbook.pdf has dozens of designs using THHN, teflon pairs, and RG400. These chokes are fairly easy to wind, and all can be built for less than about $35, including connectors. > >A member of our contest club is building a serious contest station, and asked me to measure a "balun" from a well-known manufacturer. It came in a nice weatherproof non-metallic enclosure, and was nicely made. But it looked NOTHING like the data sheet that WAS on the website at the time (and which has been removed since I showed my data to a few engineering colleagues, one of whom obviously asked the mfr about it.) > >The problem with choking a two-wire feedline is NOT one of balance -- if it's a good choke, the choke takes "balance" out of the equation. What matters is dissipation in the choke due to excessive voltage or current that is present because the antenna is not matched to the line. > >73, Jim K9YC > >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft at mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html >Message delivered to barrylazar2 at gmail.com From c-hawley at illinois.edu Mon Jan 14 16:19:03 2019 From: c-hawley at illinois.edu (hawley, charles j jr) Date: Mon, 14 Jan 2019 21:19:03 +0000 Subject: [Elecraft] Battery Low K3 In-Reply-To: <1547489025733-0.post@n2.nabble.com> References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> <53950dff-d2a1-07ef-d237-0db2bda4c4fe@embarqmail.com> <359327140.17879512.1547405775046@mail.yahoo.com> <46aab932-fa47-be88-c959-1cea1d36c900@embarqmail.com> <1130670738.17875685.1547408304425@mail.yahoo.com> <1547456079416-0.post@n2.nabble.com> , <1547489025733-0.post@n2.nabble.com> Message-ID: Some have said that the coin cells don't leak...maybe not often but I know of one that leaked in a Kenwood 850 and ate away some of the circuit board traces. So regular maintenance is in order for any battery. Chuck Hawley Amateur Radio, KE9UW ________________________________ From: elecraft-bounces at mailman.qth.net on behalf of Petr, OK1RP/M0SIS Sent: Monday, January 14, 2019 12:03:45 PM To: elecraft at mailman.qth.net Subject: Re: [Elecraft] Battery Low K3 Ups, Bill you scarred me with leaking the cell inside of my K3...:) OK, OK, OK, I will check it tonite... ----- 73 - Petr, OK1RP "Apple & Elecraft freak" B:http://ok1rp.blogspot.com G+:http://goo.gl/w3u2s9 G+: http://goo.gl/gP99xq -- Sent from: http://elecraft.365791.n2.nabble.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to c-hawley at illinois.edu From wes_n7ws at triconet.org Mon Jan 14 17:05:17 2019 From: wes_n7ws at triconet.org (Wes Stewart) Date: Mon, 14 Jan 2019 15:05:17 -0700 Subject: [Elecraft] Testing Message-ID: I've been having a problem were my posts are either not making it to the reflector or are not coming back to me as a copy, even though they always have and that is my preference in settings. Will someone let me know if they see this post.? One person will be plenty. Thanks Wes? N7WS From frantz at pwpconsult.com Mon Jan 14 17:05:23 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Mon, 14 Jan 2019 14:05:23 -0800 Subject: [Elecraft] Battery Low K3 Message-ID: I got a private message asking me how often I had seen button batteries leaking. I seem to remember only once, and no damage to the equipment it was in. Leaking button batteries may be a non-issue. 73 Bill AE6JV On 1/14/19 at 10:03 AM, indians at xsmail.com (Petr, OK1RP/M0SIS) wrote: >Ups, Bill you scarred me with leaking the cell inside of my K3...:) >OK, OK, OK, I will check it tonite... ----------------------------------------------------------------------- Bill Frantz | Truth and love must prevail | Periwinkle (408)356-8506 | over lies and hate. | 16345 Englewood Ave www.pwpconsult.com | - Vaclav Havel | Los Gatos, CA 95032 From M0XDF at Alphadene.co.uk Mon Jan 14 17:10:22 2019 From: M0XDF at Alphadene.co.uk (David Ferrington, M0XDF) Date: Mon, 14 Jan 2019 22:10:22 +0000 Subject: [Elecraft] Battery Low K3 In-Reply-To: References: Message-ID: <9662FA91-B233-4533-A7AC-A071A5A8D528@Alphadene.co.uk> I?ve seen a number of B/Bs leak (not in the K3), at least once corroding the terminals. 73 de David, M0XDF (K3 #174, P3 #108) -- If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) > On 14 Jan 2019, at 22:05, Bill Frantz wrote: > > I got a private message asking me how often I had seen button batteries leaking. I seem to remember only once, and no damage to the equipment it was in. Leaking button batteries may be a non-issue. > > 73 Bill AE6JV > > On 1/14/19 at 10:03 AM, indians at xsmail.com (Petr, OK1RP/M0SIS) wrote: > >> Ups, Bill you scarred me with leaking the cell inside of my K3...:) >> OK, OK, OK, I will check it tonite... From k9jri at mac.com Mon Jan 14 17:13:40 2019 From: k9jri at mac.com (Michael Blake) Date: Mon, 14 Jan 2019 17:13:40 -0500 Subject: [Elecraft] Battery Low K3 In-Reply-To: References: Message-ID: <035B939F-1E5B-452A-9B02-32155F584496@mac.com> I have seen two. My Kenwood TS-850 and TS-50 both had leaky button cells. 73 - Mike - K9JRI > On Jan 14, 2019, at 5:05 PM, Bill Frantz wrote: > > I got a private message asking me how often I had seen button batteries leaking. I seem to remember only once, and no damage to the equipment it was in. Leaking button batteries may be a non-issue. > > 73 Bill AE6JV > > On 1/14/19 at 10:03 AM, indians at xsmail.com (Petr, OK1RP/M0SIS) wrote: > >> Ups, Bill you scarred me with leaking the cell inside of my K3...:) >> OK, OK, OK, I will check it tonite... > > ----------------------------------------------------------------------- > Bill Frantz | Truth and love must prevail | Periwinkle > (408)356-8506 | over lies and hate. | 16345 Englewood Ave > www.pwpconsult.com | - Vaclav Havel | Los Gatos, CA 95032 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9jri at mac.com From jimfinan at att.net Mon Jan 14 17:22:31 2019 From: jimfinan at att.net (Jim Finan) Date: Mon, 14 Jan 2019 17:22:31 -0500 Subject: [Elecraft] Testing In-Reply-To: Message-ID: Saw it! No answers... Jim Finan AB4AC Sent from my BlackBerry - the most secure mobile device ? Original Message ? From: wes_n7ws at triconet.org Sent: January 14, 2019 5:06 PM To: Elecraft at mailman.qth.net Subject: [Elecraft] Testing I've been having a problem were my posts are either not making it to the reflector or are not coming back to me as a copy, even though they always have and that is my preference in settings. Will someone let me know if they see this post.? One person will be plenty. Thanks Wes? N7WS ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to jimfinan at att.net From rwnewbould at comcast.net Mon Jan 14 17:30:04 2019 From: rwnewbould at comcast.net (Rich) Date: Mon, 14 Jan 2019 17:30:04 -0500 Subject: [Elecraft] 500Hz Filter Offset Question Message-ID: <2d805125-6725-aee1-0ad8-6fa918cd21a2@comcast.net> I just received my 500hz filters from Elecraft.?? I guess I assumed they were 8 pole, however they are 5 pole.? The web page does not specify 5 or 8 pole, or I did not navigate the webpage properly. So now that I have 5 pole filters, I seem to recall that entering the offset freq is not required any longer on the K3S, is that true? Also does a K3 upgraded with K3S features need the offset freq? I should mention that they are all matched. Is there a graphic representation of these 5 pole filters available? Thanks Rich K3RWN From john.powell at kinect.co.nz Mon Jan 14 18:01:49 2019 From: john.powell at kinect.co.nz (JOHN POWELL) Date: Tue, 15 Jan 2019 12:01:49 +1300 Subject: [Elecraft] WHAT IS AN UPDATED K3 CALLED. Message-ID: <122658d31cccfc50e9d62ea2a65bb30d8aa33fb8@webmail.kinect.co.nz> How about K3X (XTRA) ?. Just had my K3,?SN 1621,?updated at Watsonville HQ with 2 Synths (have Sub Rx)., plus installation of? following upgrades -DSP Upgrade (K3DSPUPGD-F Mod.),?Rx Ant, IF Out, Preamp, Transverter Interface (KXV3B Mod) ,in addition a full.service. Turnaround time was just over 4 weeks. Haven't had the opportunity of trying out the rig due to Cardiac problems a few days after return the K3. I was very pleased with the communications from the Technical support team at Elecraft thru the whole process.? All occurred in mid -late December and was home for Xmas. From the foregoing it maybe apparent for the rationale I adopted?relating to ?the K3X Reference. 73 John Powell. ZL1BHQ From nr4c at widomaker.com Mon Jan 14 18:08:37 2019 From: nr4c at widomaker.com (Nr4c) Date: Mon, 14 Jan 2019 18:08:37 -0500 Subject: [Elecraft] WHAT IS AN UPDATED K3 CALLED. In-Reply-To: <122658d31cccfc50e9d62ea2a65bb30d8aa33fb8@webmail.kinect.co.nz> References: <122658d31cccfc50e9d62ea2a65bb30d8aa33fb8@webmail.kinect.co.nz> Message-ID: <3D3B70B2-1E34-4C39-8693-A40E0A22038B@widomaker.com> How about a ?K3?? That?s what it is. My K3 was a K3 when I bought it with 10 watts and no ATU. It was still a K3 when I had the KDVR, the sub-receiver and 5 filters plus the BCB mod and a P3. Sent from my iPhone ...nr4c. bill > On Jan 14, 2019, at 6:01 PM, JOHN POWELL wrote: > > > > How about K3X (XTRA) ?. > > Just had my K3, SN 1621, updated at Watsonville HQ with 2 Synths > (have Sub Rx)., plus installation of following upgrades -DSP Upgrade > (K3DSPUPGD-F Mod.), Rx Ant, IF Out, Preamp, Transverter Interface > (KXV3B Mod) ,in addition a full.service. Turnaround time was just over > 4 weeks. Haven't had the opportunity of trying out the rig due to > Cardiac problems a few days after return the K3. I was very pleased > with the communications from the Technical support team at Elecraft > thru the whole process. All occurred in mid -late December and was > home for Xmas. > > From the foregoing it maybe apparent for the rationale I > adopted relating to the K3X Reference. > > 73 > > John Powell. ZL1BHQ > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From nr4c at widomaker.com Mon Jan 14 18:13:01 2019 From: nr4c at widomaker.com (Nr4c) Date: Mon, 14 Jan 2019 18:13:01 -0500 Subject: [Elecraft] 500Hz Filter Offset Question In-Reply-To: <2d805125-6725-aee1-0ad8-6fa918cd21a2@comcast.net> References: <2d805125-6725-aee1-0ad8-6fa918cd21a2@comcast.net> Message-ID: <16246B46-6DB5-4386-8630-CB9B28427792@widomaker.com> Well they used to be difrentisted from the 8 pole filters haven?t looked for them on new site. Eight pole filters have a metal can enclosing them. The five pole filters are just exposed PC boards. I think I have offsets set on my K3S for the 200 Hz filters. Sent from my iPhone ...nr4c. bill > On Jan 14, 2019, at 5:30 PM, Rich wrote: > > I just received my 500hz filters from Elecraft. I guess I assumed they were 8 pole, however they are 5 pole. The web page does not specify 5 or 8 pole, or I did not navigate the webpage properly. > > So now that I have 5 pole filters, I seem to recall that entering the offset freq is not required any longer on the K3S, is that true? > > Also does a K3 upgraded with K3S features need the offset freq? > > I should mention that they are all matched. > > Is there a graphic representation of these 5 pole filters available? > > Thanks > > Rich > > K3RWN > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From wes_n7ws at triconet.org Mon Jan 14 18:16:50 2019 From: wes_n7ws at triconet.org (Wes Stewart) Date: Mon, 14 Jan 2019 16:16:50 -0700 Subject: [Elecraft] Testing In-Reply-To: References: Message-ID: Many thanks to all who replied.? My ISP had set spam filtering to "extreme" and was blocking all of my list servers.? All of the messages were still there in quarantine on my webmail server which I never use.? My normal client is Thunderbird which is clueless in this case. Supposedly they've fixed it. Wes? N7WS On 1/14/2019 3:22 PM, Jim Finan wrote: > Saw it! > > No answers... > > Jim Finan > AB4AC > > S From k9yeq at live.com Mon Jan 14 18:23:38 2019 From: k9yeq at live.com (Bill Johnson) Date: Mon, 14 Jan 2019 23:23:38 +0000 Subject: [Elecraft] New DSP features? In-Reply-To: References: <5149CB54-CB9B-4B0A-A4F7-C83B7ADE0F05@elecraft.com> Message-ID: I use spot on KX3 without spot on. Am I missing something? 73, Bill K9YEQ https://wrj-tech.com/ -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Kenneth Christiansen Sent: Sunday, January 13, 2019 7:15 PM To: Wayne Burdick Cc: Elecraft Reflector ; KX3 at yahoogroups.com Subject: Re: [Elecraft] New DSP features? H Wayne I like the way the KX3 will let me use the automatic spot on the receiver only when the RIT is on. I have always wished the K3 and K3S would do the same thing as the automatic spot works so well but I do not want to move the transmitter at the same time with the RIT on. That is the only thing I can think of as I love my K3S. 73 Ken W0CZ w0cz at i29.net Sent from my iPad > On Jan 10, 2019, at 9:20 PM, Wayne Burdick wrote: > > Hi all, > > The K3/K3S and KX2/KX3 are SDRs, by definition, because they provide demodulation and modulation features via a DSP chip that is programmable. > > Our DSP algorithms already give the user all the usual features expected of an all-mode transceiver, and then some: > > - DVR > - variable passband filtering & IF shift > - audio peaking filter (APF, for CW) > - auto-spotting and automatic tuning (CW, PSK) > - dual watch (KX2/KX3) > - audio effects > - DTMF (KX3) > - dual-passband filtering for RTTY > - FM subaudible tones > - data decode/encode in various modes > - noise reduction > - RX and TX EQ > - synchronous AM (K3/K3S) > - ESSB > - transmit noise gating > - speech compression > - manual notch filtering > - autonotch > > ...etc. > > That said, here's your chance to dream up *new* DSP features we haven't thought of. All suggestions will be debated by our engineering team, even those that appear radical or implausible at first glance. > > We'll keep this to ourselves, so don't worry about being judged for tossing out some wacky ideas. Let's cast a broad net. > > Please send all correspondence on this topic directly to yours truly. > > 73, > Wayne > N6KR > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to wocz at i29.net > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com From k9ma at sdellington.us Mon Jan 14 18:25:27 2019 From: k9ma at sdellington.us (K9MA) Date: Mon, 14 Jan 2019 17:25:27 -0600 Subject: [Elecraft] 500Hz Filter Offset Question In-Reply-To: <16246B46-6DB5-4386-8630-CB9B28427792@widomaker.com> References: <2d805125-6725-aee1-0ad8-6fa918cd21a2@comcast.net> <16246B46-6DB5-4386-8630-CB9B28427792@widomaker.com> Message-ID: It looks to me like you still have to set the offsets. See manual. It doesn't appear there is any difference between the K3 and K3s as far as filter offsets. When I set up my K3, I tried to get the 200 Hz filter offset "just right", so the noise would sound exactly the same in USB or LSB (CW or CW REV). I found that the filter drifted around quite a bit with temperature. So, if you have the narrow filters, let the temperature stabilize before setting the offset. Wider filters are much less critical. 73, Scott K9MA On 1/14/2019 17:13, Nr4c wrote: > Well they used to be difrentisted from the 8 pole filters haven?t looked for them on new site. > > Eight pole filters have a metal can enclosing them. The five pole filters are just exposed PC boards. > > I think I have offsets set on my K3S for the 200 Hz filters. > > Sent from my iPhone > ...nr4c. bill > > >> On Jan 14, 2019, at 5:30 PM, Rich wrote: >> >> I just received my 500hz filters from Elecraft. I guess I assumed they were 8 pole, however they are 5 pole. The web page does not specify 5 or 8 pole, or I did not navigate the webpage properly. >> >> So now that I have 5 pole filters, I seem to recall that entering the offset freq is not required any longer on the K3S, is that true? >> >> Also does a K3 upgraded with K3S features need the offset freq? >> >> I should mention that they are all matched. >> >> Is there a graphic representation of these 5 pole filters available? >> >> Thanks >> >> Rich >> >> K3RWN >> > -- Scott K9MA k9ma at sdellington.us From k9yeq at live.com Mon Jan 14 18:26:43 2019 From: k9yeq at live.com (Bill Johnson) Date: Mon, 14 Jan 2019 23:26:43 +0000 Subject: [Elecraft] New DSP features? In-Reply-To: References: <5149CB54-CB9B-4B0A-A4F7-C83B7ADE0F05@elecraft.com> Message-ID: I meant without RIT on. 73, Bill K9YEQ https://wrj-tech.com/ -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Bill Johnson Sent: Monday, January 14, 2019 5:24 PM To: Kenneth Christiansen ; Wayne Burdick Cc: Elecraft Reflector ; KX3 at yahoogroups.com Subject: Re: [Elecraft] New DSP features? I use spot on KX3 without spot on. Am I missing something? 73, Bill K9YEQ https://wrj-tech.com/ -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Kenneth Christiansen Sent: Sunday, January 13, 2019 7:15 PM To: Wayne Burdick Cc: Elecraft Reflector ; KX3 at yahoogroups.com Subject: Re: [Elecraft] New DSP features? H Wayne I like the way the KX3 will let me use the automatic spot on the receiver only when the RIT is on. I have always wished the K3 and K3S would do the same thing as the automatic spot works so well but I do not want to move the transmitter at the same time with the RIT on. That is the only thing I can think of as I love my K3S. 73 Ken W0CZ w0cz at i29.net Sent from my iPad > On Jan 10, 2019, at 9:20 PM, Wayne Burdick wrote: > > Hi all, > > The K3/K3S and KX2/KX3 are SDRs, by definition, because they provide demodulation and modulation features via a DSP chip that is programmable. > > Our DSP algorithms already give the user all the usual features expected of an all-mode transceiver, and then some: > > - DVR > - variable passband filtering & IF shift > - audio peaking filter (APF, for CW) > - auto-spotting and automatic tuning (CW, PSK) > - dual watch (KX2/KX3) > - audio effects > - DTMF (KX3) > - dual-passband filtering for RTTY > - FM subaudible tones > - data decode/encode in various modes > - noise reduction > - RX and TX EQ > - synchronous AM (K3/K3S) > - ESSB > - transmit noise gating > - speech compression > - manual notch filtering > - autonotch > > ...etc. > > That said, here's your chance to dream up *new* DSP features we haven't thought of. All suggestions will be debated by our engineering team, even those that appear radical or implausible at first glance. > > We'll keep this to ourselves, so don't worry about being judged for tossing out some wacky ideas. Let's cast a broad net. > > Please send all correspondence on this topic directly to yours truly. > > 73, > Wayne > N6KR > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to wocz at i29.net > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com From jackbrindle at me.com Mon Jan 14 18:30:09 2019 From: jackbrindle at me.com (Jack Brindle) Date: Mon, 14 Jan 2019 15:30:09 -0800 Subject: [Elecraft] 500Hz Filter Offset Question In-Reply-To: <2d805125-6725-aee1-0ad8-6fa918cd21a2@comcast.net> References: <2d805125-6725-aee1-0ad8-6fa918cd21a2@comcast.net> Message-ID: <188E6245-A793-46A2-BA01-F28EF2941E11@me.com> This has to do with the synthesizer boards. I believe the answer is that you don?t need to match them with the new synthesizers. You may need to still enter the offsets, however. 73! Jack, W6FB > On Jan 14, 2019, at 2:30 PM, Rich wrote: > > I just received my 500hz filters from Elecraft. I guess I assumed they were 8 pole, however they are 5 pole. The web page does not specify 5 or 8 pole, or I did not navigate the webpage properly. > > So now that I have 5 pole filters, I seem to recall that entering the offset freq is not required any longer on the K3S, is that true? > > Also does a K3 upgraded with K3S features need the offset freq? > > I should mention that they are all matched. > > Is there a graphic representation of these 5 pole filters available? > > Thanks > > Rich > > K3RWN > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jackbrindle at me.com From donwilh at embarqmail.com Mon Jan 14 18:42:00 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Mon, 14 Jan 2019 18:42:00 -0500 Subject: [Elecraft] 500Hz Filter Offset Question In-Reply-To: <2d805125-6725-aee1-0ad8-6fa918cd21a2@comcast.net> References: <2d805125-6725-aee1-0ad8-6fa918cd21a2@comcast.net> Message-ID: Rich, Wrong - you must enter the offset frequency. Related - what is true is that you do not need matched filters in the main and the subRX for Diversity reception with the new synthesizers. There are plots on the Elecraft website showing the filter response. I don't recall if the 500 Hz filters are included. 73, Don W3FPR On 1/14/2019 5:30 PM, Rich wrote: > > So now that I have 5 pole filters, I seem to recall that entering the > offset freq is not required any longer on the K3S, is that true? > > Also does a K3 upgraded with K3S features need the offset freq? > > I should mention that they are all matched. > From rwnewbould at comcast.net Mon Jan 14 18:55:38 2019 From: rwnewbould at comcast.net (Rich) Date: Mon, 14 Jan 2019 18:55:38 -0500 Subject: [Elecraft] 500Hz Filter Offset Question In-Reply-To: References: <2d805125-6725-aee1-0ad8-6fa918cd21a2@comcast.net> Message-ID: <8ed30559-29a9-d7df-1541-54c27751be1d@comcast.net> Thanks all.? I did read the manual, but it would help if I had read the entire paragraph and not just one sentence. In this case they sent me all matching offsets, so they are all the same. I was surprised that they do not have 500hz 8 pole. Oh well, back to putting the radio back together Ric On 1/14/2019 18:42 PM, Don Wilhelm wrote: > Rich, > > Wrong - you must enter the offset frequency. > Related - what is true is that you do not need matched filters in the > main and the subRX for Diversity reception with the new synthesizers. > > There are plots on the Elecraft website showing the filter response.? > I don't recall if the 500 Hz filters are included. > > 73, > Don W3FPR > > On 1/14/2019 5:30 PM, Rich wrote: >> >> So now that I have 5 pole filters, I seem to recall that entering the >> offset freq is not required any longer on the K3S, is that true? >> >> Also does a K3 upgraded with K3S features need the offset freq? >> >> I should mention that they are all matched. >> > From rolfb at accima.com Mon Jan 14 18:59:41 2019 From: rolfb at accima.com (Bob W7AVK) Date: Mon, 14 Jan 2019 15:59:41 -0800 Subject: [Elecraft] Battery Low K3 In-Reply-To: <9662FA91-B233-4533-A7AC-A071A5A8D528@Alphadene.co.uk> References: <9662FA91-B233-4533-A7AC-A071A5A8D528@Alphadene.co.uk> Message-ID: What is the battery number for the B/B in the K3? ?Mine needs replacing and don't want to take apart the K3 twice. Tnx 73? Bob? W7AVK On 1/14/2019 2:10 PM, David Ferrington, M0XDF wrote: > I?ve seen a number of B/Bs leak (not in the K3), at least once corroding the terminals. > > 73 de David, M0XDF (K3 #174, P3 #108) From howardsaxion at mac.com Mon Jan 14 19:06:17 2019 From: howardsaxion at mac.com (Howard Saxion) Date: Mon, 14 Jan 2019 16:06:17 -0800 Subject: [Elecraft] Battery Low K3 In-Reply-To: References: <9662FA91-B233-4533-A7AC-A071A5A8D528@Alphadene.co.uk> Message-ID: <36D949A0-C761-48A9-B761-12814E15256C@mac.com> Page 48 in the K3 manual-Real Time Clock Battery Replacement. It is a CR2032, BR2032, or equivalent. Maybe it is time to check the one in my K3. K3 Howard/WX7HS > On Jan 14, 2019, at 3:59 PM, Bob W7AVK wrote: > > What is the battery number for the B/B in the K3? > Mine needs replacing and don't want to take apart the K3 twice. > > Tnx > > 73 Bob W7AVK > > > > On 1/14/2019 2:10 PM, David Ferrington, M0XDF wrote: >> I?ve seen a number of B/Bs leak (not in the K3), at least once corroding the terminals. >> >> 73 de David, M0XDF (K3 #174, P3 #108) > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to howardsaxion at mac.com From rcrgs at verizon.net Mon Jan 14 19:13:06 2019 From: rcrgs at verizon.net (Robert G Strickland) Date: Tue, 15 Jan 2019 00:13:06 +0000 Subject: [Elecraft] [Elecraft-K3] K3S Comparison table finalized (link attached) In-Reply-To: References: Message-ID: <33dc075e-c191-f6a5-1947-f4f34ac5eb21@verizon.net> I can' get this, latest link to work either. ...robert On 1/14/2019 04:11, John Hiatt wrote: > It appears to be linked from the K3S Transceiver Product page, on the Manuals tab toward the bottom of the page, but here is the current link: ftp://ftp.elecraft.com/K3S/K3S_comparison1.pdf > > John, KC7DRI > > > ________________________________ > From: elecraft-bounces at mailman.qth.net on behalf of Bob Wilson, N6TV > Sent: Sunday, January 13, 2019 6:45 PM > To: Elecraft Reflector > Subject: Re: [Elecraft] [Elecraft-K3] K3S Comparison table finalized (link attached) > > The link below no longer works. Where is this document now? > > 73, > Bob, N6TV > > On Sat, Jul 7, 2018 at 9:05 AM N6KR wrote: > >> Our detailed, two-page comparison table between the K3S and IC-7610 is now >> complete: >> >> http://www.elecraft.com/K3/K3S_comparison1.pdf >> >> I???d like to thank everyone who reviewed the table for content and >> accuracy, including several who own or have used both radios. Many of your >> suggestions were incorporated. As a result, the table now captures those >> aspects of the performance, portability, and user interface of the K3S that >> are most important to current and prospective owners. >> >> The table is an excellent starting point. If you still have unanswered >> questions about K3S features, theory of operation, etc., feel free to email >> me directly. (In fact, if you???re within driving distance of my QTH in >> Belmont, CA, stop by for a demo :) >> >> 73, >> Wayne >> N6KR >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to hidron at hotmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rcrgs at verizon.net > -- Robert G Strickland, PhD ABPH - KE2WY rcrgs at verizon.net.usa Syracuse, New York, USA From markmusick at outlook.com Mon Jan 14 19:17:05 2019 From: markmusick at outlook.com (Mark Musick) Date: Tue, 15 Jan 2019 00:17:05 +0000 Subject: [Elecraft] 500Hz Filter Offset Question In-Reply-To: <8ed30559-29a9-d7df-1541-54c27751be1d@comcast.net> References: <2d805125-6725-aee1-0ad8-6fa918cd21a2@comcast.net> <8ed30559-29a9-d7df-1541-54c27751be1d@comcast.net> Message-ID: INRAD has 500Hz 8 pole filters for the K3/K3S. I have one in the main receiver and one in the sub-receiver. Mark, WB9CIF -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Rich Sent: Monday, January 14, 2019 23:56 To: donwilh at embarqmail.com; Elecraft Subject: Re: [Elecraft] 500Hz Filter Offset Question Thanks all.? I did read the manual, but it would help if I had read the entire paragraph and not just one sentence. In this case they sent me all matching offsets, so they are all the same. I was surprised that they do not have 500hz 8 pole. Oh well, back to putting the radio back together Ric On 1/14/2019 18:42 PM, Don Wilhelm wrote: > Rich, > > Wrong - you must enter the offset frequency. > Related - what is true is that you do not need matched filters in the > main and the subRX for Diversity reception with the new synthesizers. > > There are plots on the Elecraft website showing the filter response. I > don't recall if the 500 Hz filters are included. > > 73, > Don W3FPR > > On 1/14/2019 5:30 PM, Rich wrote: >> >> So now that I have 5 pole filters, I seem to recall that entering the >> offset freq is not required any longer on the K3S, is that true? >> >> Also does a K3 upgraded with K3S features need the offset freq? >> >> I should mention that they are all matched. >> > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to markmusick at outlook.com From dragan.bar at gmail.com Mon Jan 14 19:24:22 2019 From: dragan.bar at gmail.com (Dragan 4O4A) Date: Mon, 14 Jan 2019 17:24:22 -0700 (MST) Subject: [Elecraft] SWR on 40M band Message-ID: <1547511862603-0.post@n2.nabble.com> Hello all, Well, I cannot say that it is a high SWR, but when I connect my K3 to dummy load it shows 1.3:1 SWR on 40M. All other bands 160-10 are OK, 1:1. Other rigs shows 1:1 on 40M. Where to start to fix this? Regards, Dragan, 4O4A -- Sent from: http://elecraft.365791.n2.nabble.com/ From dmboresz at gmail.com Mon Jan 14 19:39:26 2019 From: dmboresz at gmail.com (Dale Boresz) Date: Mon, 14 Jan 2019 19:39:26 -0500 Subject: [Elecraft] [Elecraft-K3] K3S Comparison table finalized (link attached) In-Reply-To: <33dc075e-c191-f6a5-1947-f4f34ac5eb21@verizon.net> References: <33dc075e-c191-f6a5-1947-f4f34ac5eb21@verizon.net> Message-ID: Try: < http://ftp.elecraft.com/K3S/K3S_comparison1.pdf > 73, Dale - WA8SRA On Mon, Jan 14, 2019 at 7:14 PM Robert G Strickland wrote: > I can' get this, latest link to work either. > ...robert > > On 1/14/2019 04:11, John Hiatt wrote: > > It appears to be linked from the K3S Transceiver Product page, on the > Manuals tab toward the bottom of the page, but here is the current link: > ftp://ftp.elecraft.com/K3S/K3S_comparison1.pdf > > > > John, KC7DRI > > > > > > ________________________________ > > From: elecraft-bounces at mailman.qth.net > on behalf of Bob Wilson, N6TV > > Sent: Sunday, January 13, 2019 6:45 PM > > To: Elecraft Reflector > > Subject: Re: [Elecraft] [Elecraft-K3] K3S Comparison table finalized > (link attached) > > > > The link below no longer works. Where is this document now? > > > > 73, > > Bob, N6TV > > > > On Sat, Jul 7, 2018 at 9:05 AM N6KR wrote: > > > >> Our detailed, two-page comparison table between the K3S and IC-7610 is > now > >> complete: > >> > >> http://www.elecraft.com/K3/K3S_comparison1.pdf > >> > >> I???d like to thank everyone who reviewed the table for content and > >> accuracy, including several who own or have used both radios. Many of > your > >> suggestions were incorporated. As a result, the table now captures those > >> aspects of the performance, portability, and user interface of the K3S > that > >> are most important to current and prospective owners. > >> > >> The table is an excellent starting point. If you still have unanswered > >> questions about K3S features, theory of operation, etc., feel free to > email > >> me directly. (In fact, if you???re within driving distance of my QTH in > >> Belmont, CA, stop by for a demo :) > >> > >> 73, > >> Wayne > >> N6KR > >> > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to hidron at hotmail.com > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to rcrgs at verizon.net > > > > -- > Robert G Strickland, PhD ABPH - KE2WY > rcrgs at verizon.net.usa > Syracuse, New York, USA > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to dmboresz at gmail.com > From donwilh at embarqmail.com Mon Jan 14 19:44:47 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Mon, 14 Jan 2019 19:44:47 -0500 Subject: [Elecraft] SWR on 40M band In-Reply-To: <1547511862603-0.post@n2.nabble.com> References: <1547511862603-0.post@n2.nabble.com> Message-ID: <6732b5ea-58ba-4d16-da85-71b0a032037e@embarqmail.com> Dragan, Can I assume that you first tuned the KAT3 to the dummy load on 40 meters? If you did not, then the L/C combination for the last antenna TUNE you did are still present, and will show an SWR with a dummy load. Actually 1.3:1 is quite a workable load on any band. The SWR does not have to be 1:1. In fact there is a low SWR point where the ATU will not attempt to tune. See the K3 manual page 22 and the CONFIG:KAT3 menu (K3 manual page 56). If you have the K3S, the manual pages may b a bit different. 73, Don W3FPR On 1/14/2019 7:24 PM, Dragan 4O4A wrote: > Hello all, > > Well, I cannot say that it is a high SWR, but when I connect my K3 to dummy > load it shows 1.3:1 SWR on 40M. All other bands 160-10 are OK, 1:1. Other > rigs shows 1:1 on 40M. > > Where to start to fix this? From dragan.bar at gmail.com Mon Jan 14 19:52:00 2019 From: dragan.bar at gmail.com (Dragan 4O4A) Date: Mon, 14 Jan 2019 17:52:00 -0700 (MST) Subject: [Elecraft] SWR on 40M band In-Reply-To: <6732b5ea-58ba-4d16-da85-71b0a032037e@embarqmail.com> References: <1547511862603-0.post@n2.nabble.com> <6732b5ea-58ba-4d16-da85-71b0a032037e@embarqmail.com> Message-ID: <1547513520972-0.post@n2.nabble.com> Hi Don, Thanks for prompt reply. No KAT3 installed. I'm aware that it is not a big deal, it's just annoying. However, I would like to understand what caused it and how to fix it - if it is a simple solution. -- Sent from: http://elecraft.365791.n2.nabble.com/ From gt-i at gmx.net Mon Jan 14 20:01:59 2019 From: gt-i at gmx.net (gt-i at gmx.net) Date: Tue, 15 Jan 2019 02:01:59 +0100 Subject: [Elecraft] K3 Sub-receiver RIT In-Reply-To: References: Message-ID: Scott, I looked at the programmer ref manual and realized there is only one RIT/XIT, which is controlling VFO A. I guess there are two choices left: - either you press A/B to switch to your CQ VFO. - or you try to mimick RIT of VFO B via FBxxx; commands with the help of an external control knob. Maybe this feature can be added more easily to the K-POD? 73 Gernot DF5RF Am 13.01.2019 um 18:14 schrieb K9MA: > I've found that during some contest operation, it's handy to call CQ > on VFO B, while using VFO A to search and pounce. (Known as Single > Operator 2 VFO mode, SO2V.) That way, when unassisted, I can use the > P3 to locate promising signals. However, I sometimes wish the RIT > would work with the sub-receiver on VFO B. Has anyone found a way to > do this? Even better would be to have RIT on VFO B and XIT on VFO A. > > If it's not currently possible, I'd add it to my firmware wish list. > > 73, > > Scott K9MA > From k9ma at sdellington.us Mon Jan 14 20:18:15 2019 From: k9ma at sdellington.us (K9MA) Date: Mon, 14 Jan 2019 19:18:15 -0600 Subject: [Elecraft] K3 Sub-receiver RIT In-Reply-To: References: Message-ID: <2d908f08-390f-d5ac-0201-2207cd1f457f@sdellington.us> Thanks, Gernot. I came to the same conclusion. I also tried using "BSET", but it doesn't enable the RIT on VFO B. Maybe a firmware update could fix that? 73, Scott K9MA On 1/14/2019 19:01, gt-i at gmx.net wrote: > Scott, > I looked at the programmer ref manual and realized there is only one > RIT/XIT, which is controlling VFO A. I guess there are two choices left: > - either you press A/B to switch to your CQ VFO. > - or you try to mimick RIT of VFO B via FBxxx; commands with the help > of an external control knob. > Maybe this feature can be added more easily to the K-POD? > 73 > Gernot > DF5RF > > > Am 13.01.2019 um 18:14 schrieb K9MA: >> I've found that during some contest operation, it's handy to call CQ >> on VFO B, while using VFO A to search and pounce. (Known as Single >> Operator 2 VFO mode, SO2V.) That way, when unassisted, I can use the >> P3 to locate promising signals. However, I sometimes wish the RIT >> would work with the sub-receiver on VFO B. Has anyone found a way to >> do this? Even better would be to have RIT on VFO B and XIT on VFO A. >> >> If it's not currently possible, I'd add it to my firmware wish list. >> >> 73, >> >> Scott K9MA >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9ma at sdellington.us -- Scott K9MA k9ma at sdellington.us From donwilh at embarqmail.com Mon Jan 14 20:37:42 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Mon, 14 Jan 2019 20:37:42 -0500 Subject: [Elecraft] SWR on 40M band In-Reply-To: <1547513520972-0.post@n2.nabble.com> References: <1547511862603-0.post@n2.nabble.com> <6732b5ea-58ba-4d16-da85-71b0a032037e@embarqmail.com> <1547513520972-0.post@n2.nabble.com> Message-ID: <7f5996d2-8d14-7513-20c8-eacf073143db@embarqmail.com> Dragon, Just to eliminate the dummy load from questions, have you checked that dummy load with an antenna analyzer on 40 meters? If not, please do that just to keep it above suspicion. I certainly don't know the answer. If you cannot identify the problem source, an email to support at elecraft.com may provide additional information. 73, Don W3FPR On 1/14/2019 7:52 PM, Dragan 4O4A wrote: > Hi Don, > Thanks for prompt reply. > > No KAT3 installed. > I'm aware that it is not a big deal, it's just annoying. > However, I would like to understand what caused it and how to fix it - if it > is a simple solution. > From joseph.durnal at gmail.com Mon Jan 14 20:36:56 2019 From: joseph.durnal at gmail.com (Joseph M. Durnal) Date: Mon, 14 Jan 2019 20:36:56 -0500 Subject: [Elecraft] KAT3A & KIO3B Upgrade for my K3 In-Reply-To: References: Message-ID: KAT3A and KIO3B installed! Had a scare as I couldn't remove the bottom center screw on the right side panel, it started stripping. I had this issue on one of the front panel screws about a year ago when I was trying to replace my VFO B encoder. I was able to get the KAT3A installed without completely removing the right side panel. I should have spring for over night shipping, I was counting on the USPS to get it to me by Friday, but the package didn't arrive until today. Elecraft shipped it on Wednesday, but I guess since they aren't Amazon, the USPS doesn't bend over backward for them. The good news was while waiting for the K3 upgrades, I finally finished soldering the K1. That's been a 10 year odyssey, that I'll write about at a later date. I need to find the power cable I made up for it to finish testing and to get it on the air. That's what happens when you take over 10 years to build a kit. Back on the subject, ahh, it is nice to have a little less clutter on the desk. The KAT3A tunes my antenna on all bands, even 160, which was a shock! Not that I'll be doing much down there with my indoor attic antenna. I might buy one of the custom FSK interfaces, mine looks like something between a spider and a plate of spaghetti. Anyone in the market for an original K3 I/O board? 73 de Joseph M. Durnal - NE3R On Thu, Jan 10, 2019 at 10:39 PM Brian Hunt wrote: > I bet the KEY macro in N1MM+ would work. Purely speculation on my part > since I haven't tried it but it works fine for CW. > > 73, > Brian, K0DTJ > From dragan.bar at gmail.com Mon Jan 14 20:45:38 2019 From: dragan.bar at gmail.com (Dragan 4O4A) Date: Mon, 14 Jan 2019 18:45:38 -0700 (MST) Subject: [Elecraft] SWR on 40M band In-Reply-To: <7f5996d2-8d14-7513-20c8-eacf073143db@embarqmail.com> References: <1547511862603-0.post@n2.nabble.com> <6732b5ea-58ba-4d16-da85-71b0a032037e@embarqmail.com> <1547513520972-0.post@n2.nabble.com> <7f5996d2-8d14-7513-20c8-eacf073143db@embarqmail.com> Message-ID: <1547516738237-0.post@n2.nabble.com> Don, Dummy load is OK, I tested it with another radio (IC-7300) which shows 1:1 SWR. Thanks for advice about Support. I will certainly contact them. 73, Dragan, 4O4A -- Sent from: http://elecraft.365791.n2.nabble.com/ From donwilh at embarqmail.com Mon Jan 14 20:47:00 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Mon, 14 Jan 2019 20:47:00 -0500 Subject: [Elecraft] KAT3A & KIO3B Upgrade for my K3 In-Reply-To: References: Message-ID: <66dbda51-508c-0eb4-d924-1e78930631cd@embarqmail.com> Joseph, Get yourself a *new* #1 phillips screwdriver (if your screwdriver tip looks shiny, it is worn, throw it away).? If you are trying to use a #2 (the most common phillips), then get a #1. You may be wise to replace the stripped screws.? Consider the Stainless Steel screw kit from Elecraft - it may be less expensive than ordering the screws one by one. Congratulations on finishing the K1. 73, Don W3FPR On 1/14/2019 8:36 PM, Joseph M. Durnal wrote: > KAT3A and KIO3B installed!? Had a scare as I couldn't remove the > bottom center screw on the right side panel, it started stripping.? I > had this issue on one of the front panel screws about a year ago when > I was trying to replace my VFO B encoder.? I was able to get the KAT3A > installed without completely removing the right side panel. > > I should have spring for over night shipping, I was counting on the > USPS to get it to me by Friday, but the package didn't arrive until > today.? Elecraft shipped it on Wednesday, but I guess since they > aren't Amazon, the USPS doesn't bend over backward for them. > > The good news was while waiting for the K3 upgrades, I finally > finished soldering the K1.? That's been a 10 year odyssey, that I'll > write about at a later date.? I need to find the power cable I made up > for it to finish testing and to get it on the air.? That's what > happens when you take over 10 years to build a kit. > > Back on the subject, ahh, it is nice to have a little less clutter on > the desk.? The KAT3A tunes my antenna on all bands, even 160, which > was a shock!? Not that I'll be doing much down there with my indoor > attic antenna. I might buy one of the custom FSK interfaces, mine > looks like something between a spider and a plate of spaghetti. > > From john at kk9a.com Mon Jan 14 20:55:13 2019 From: john at kk9a.com (john at kk9a.com) Date: Mon, 14 Jan 2019 20:55:13 -0500 Subject: [Elecraft] K3 Sub-receiver RIT Message-ID: <007f01d4ac75$5b5a1b50$120e51f0$@com> If you have a K-Pod it is just as easy to tune with VFO B while running on A. Is the issue the way the P3 is used to move in on a signal? I have K-Pod buttons to turn RIT on and off and also to clear the offset. John KK9A K9MA wrote: I've found that during some contest operation, it's handy to call CQ on VFO B, while using VFO A to search and pounce. (Known as Single Operator 2 VFO mode, SO2V.) That way, when unassisted, I can use the P3 to locate promising signals. However, I sometimes wish the RIT would work with the sub-receiver on VFO B. Has anyone found a way to do this? Even better would be to have RIT on VFO B and XIT on VFO A. If it's not currently possible, I'd add it to my firmware wish list. 73, Scott K9MA From wes_n7ws at triconet.org Mon Jan 14 21:32:38 2019 From: wes_n7ws at triconet.org (Wes Stewart) Date: Mon, 14 Jan 2019 19:32:38 -0700 Subject: [Elecraft] Non-Resonant Antennas and Chokes In-Reply-To: References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> <27431028-a151-ef2b-6607-8f5c4a8cbd1b@audiosystemsgroup.com> <1317843741.19288384.1547433971496@mail.yahoo.com> Message-ID: <2e693359-e72c-55cd-caab-738a2b57f904@triconet.org> You do realize that if the common-mode current on the line is due to asymmetry between the antenna and the line, then choking at the feed-point reduces the CM current at that point, but just like your example said, a quarter wave *down* the line you have a CM peak.? If asymmetry isn't an issue then open wire is just fine with a balun at the tuner and I say this while not being a fan of open wire fed antennas. I'm also somewhat bemused by the cottage industry that's sprung up in the last few years to calm the hand wringing about common mode current.? I think there's been a lot of development of cures that are looking for ailments.? In my curmudgeonly opinion of course :-) Wes N7WS ,? On 1/13/2019 10:24 PM, Jim Brown wrote: > WHERE are you measuring it? You do realize that, like any antenna, current > varies along the wires that make up the antenna. A choke attempts to force the > current to zero AT THE POINT WHERE THE CHOKE IS PLACED. You're putting it at > the tuner, so it forces current to zero there. But a quarter wave up the > feedline, the current reaches a maximum value. From wes_n7ws at triconet.org Mon Jan 14 21:53:28 2019 From: wes_n7ws at triconet.org (Wes Stewart) Date: Mon, 14 Jan 2019 19:53:28 -0700 Subject: [Elecraft] Query for new DSP features In-Reply-To: <8c1661a6-4d5d-6b80-69c5-493d9adfd25a@david-woolley.me.uk> References: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> <8c1661a6-4d5d-6b80-69c5-493d9adfd25a@david-woolley.me.uk> Message-ID: <77367f72-ef32-d948-4bd3-8f7ced3f30cd@triconet.org> https://www.youtube.com/watch?v=FrVDL_-HOds starting at 41 minutes.? Particularly at 1 hour 3 minutes. On 1/12/2019 9:51 AM, David Woolley wrote: > Do you have a reference for an algorithm that will do this? From k9ma at sdellington.us Mon Jan 14 21:53:54 2019 From: k9ma at sdellington.us (K9MA) Date: Mon, 14 Jan 2019 20:53:54 -0600 Subject: [Elecraft] K3 Sub-receiver RIT In-Reply-To: <007f01d4ac75$5b5a1b50$120e51f0$@com> References: <007f01d4ac75$5b5a1b50$120e51f0$@com> Message-ID: <3096eafd-9880-200e-41a7-d4ab09b34705@sdellington.us> On 1/14/2019 19:55, john at kk9a.com wrote: > Is the issue the way the P3 is used to move in on a signal? Yes, that is exactly the issue. When unassisted, using the P3 is the best method I've found for finding new contacts. However, the span has to be 10 kHz, or it's too hard to resolve cw signals. (I know, I could add a VGA display.) Other than the RIT issue, running on VFO B and the sub rx works well. If there were a setting, say, to make the RIT apply to VFO B only when the sub was on, the problem would be solved. 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us From alan at wilcoxengineering.com Mon Jan 14 22:10:04 2019 From: alan at wilcoxengineering.com (Alan D. Wilcox) Date: Mon, 14 Jan 2019 22:10:04 -0500 Subject: [Elecraft] WTB: KIO2 board Message-ID: Hello, I need a spare KIO2 board ? Reply off list please. Cheers, Alan D. Wilcox, W3DVX 570-916-9590 (cell, text) https://WilcoxEngineering.com http://www.eham.net/reviews/detail/6768 ... Elecraft Client Comments From Gary at ka1j.com Mon Jan 14 22:56:30 2019 From: Gary at ka1j.com (Gary Smith) Date: Mon, 14 Jan 2019 22:56:30 -0500 Subject: [Elecraft] KPA500 & Drake TR7 In-Reply-To: References: <246829685.18794704.1547315972097@mail.yahoo.com>, <1547404504951-0.post@n2.nabble.com>, Message-ID: <5C3D59EE.24063.52F127@Gary.ka1j.com> I hesitate to answer to this, it's been so long since I had a TR7 (My 2nd rig) and my memory of it is not clear. Given this disclaimer, I believe you'll find an adjustable piece, two wafers with a rectangular key hole in the center part to turn it. Cap or resistance, I don't recall what it was, but it controlled the output and you could lower it way down or get more than the rated output with it (at the expense of the transistors if you pushed it too long). I wish I could remember exactly where it was, but I believe it was on the heatsink or close to it at the back side of the rig. Might have been blue, I'm not sure, maybe it was accessible from the outside of the radio, from the bottom rear? I think I'd remember it if I saw the TR7 again, the adjustment was in plain sight. I suspect if you backed it down you'll be fine with the output from the KPA-500. For some time the TR7 was used for EME, the person who bought mine was modding it for that and perhaps in an EME group someone might have good knowledge of the TR7 and where this was exactly located. 73, Gary KA1J From wunder at wunderwood.org Mon Jan 14 23:22:11 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Mon, 14 Jan 2019 20:22:11 -0800 Subject: [Elecraft] KPA500 & Drake TR7 In-Reply-To: <5C3D59EE.24063.52F127@Gary.ka1j.com> References: <246829685.18794704.1547315972097@mail.yahoo.com> <1547404504951-0.post@n2.nabble.com> <5C3D59EE.24063.52F127@Gary.ka1j.com> Message-ID: <960CFE34-E257-40DA-B95A-D3D97C298AAF@wunderwood.org> I know nothing about the TR7, but I searched the web for "drake tr7 output power adjustment? and found this useful-looking page, with photos. http://www.wb4hfn.com/DRAKE/DrakeArticles/TR7_ALC_Control/TR7%20ACL%20Control.htm wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 14, 2019, at 7:56 PM, Gary Smith wrote: > > I hesitate to answer to this, it's been so > long since I had a TR7 (My 2nd rig) and my > memory of it is not clear. > > Given this disclaimer, I believe you'll > find an adjustable piece, two wafers with > a rectangular key hole in the center part > to turn it. Cap or resistance, I don't > recall what it was, but it controlled the > output and you could lower it way down or > get more than the rated output with it (at > the expense of the transistors if you > pushed it too long). > > I wish I could remember exactly where it > was, but I believe it was on the heatsink > or close to it at the back side of the > rig. Might have been blue, I'm not sure, > maybe it was accessible from the outside > of the radio, from the bottom rear? I > think I'd remember it if I saw the TR7 > again, the adjustment was in plain sight. > > I suspect if you backed it down you'll be > fine with the output from the KPA-500. > > For some time the TR7 was used for EME, > the person who bought mine was modding it > for that and perhaps in an EME group > someone might have good knowledge of the > TR7 and where this was exactly located. > > 73, > > Gary > KA1J > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From donovanf at starpower.net Tue Jan 15 00:24:38 2019 From: donovanf at starpower.net (donovanf at starpower.net) Date: Tue, 15 Jan 2019 00:24:38 -0500 (EST) Subject: [Elecraft] 500Hz Filter Offset Question In-Reply-To: Message-ID: <1493143719.2887999.1547529878559.JavaMail.root@starpower.net> oops. The Elecraft 500 Hz 8 pole filter is discontinued... http://www.inrad.net/product.php?productid=316&cat=140 73 Frank W3LPL ----- Original Message ----- From: "Mark Musick" To: "Rich" , donwilh at embarqmail.com, "Elecraft" Sent: Tuesday, January 15, 2019 12:17:05 AM Subject: Re: [Elecraft] 500Hz Filter Offset Question INRAD has 500Hz 8 pole filters for the K3/K3S. I have one in the main receiver and one in the sub-receiver. Mark, WB9CIF -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Rich Sent: Monday, January 14, 2019 23:56 To: donwilh at embarqmail.com; Elecraft Subject: Re: [Elecraft] 500Hz Filter Offset Question Thanks all. I did read the manual, but it would help if I had read the entire paragraph and not just one sentence. In this case they sent me all matching offsets, so they are all the same. I was surprised that they do not have 500hz 8 pole. Oh well, back to putting the radio back together Ric On 1/14/2019 18:42 PM, Don Wilhelm wrote: > Rich, > > Wrong - you must enter the offset frequency. > Related - what is true is that you do not need matched filters in the > main and the subRX for Diversity reception with the new synthesizers. > > There are plots on the Elecraft website showing the filter response. I > don't recall if the 500 Hz filters are included. > > 73, > Don W3FPR > > On 1/14/2019 5:30 PM, Rich wrote: >> >> So now that I have 5 pole filters, I seem to recall that entering the >> offset freq is not required any longer on the K3S, is that true? >> >> Also does a K3 upgraded with K3S features need the offset freq? >> >> I should mention that they are all matched. >> > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to markmusick at outlook.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to donovanf at starpower.net From jim at audiosystemsgroup.com Tue Jan 15 00:29:17 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Mon, 14 Jan 2019 21:29:17 -0800 Subject: [Elecraft] Non-Resonant Antennas and Chokes In-Reply-To: <2e693359-e72c-55cd-caab-738a2b57f904@triconet.org> References: <8e0717d0-7b62-32f2-4366-cf25505cc76f@audiosystemsgroup.com> <1683298941.19225113.1547422933771@mail.yahoo.com> <27431028-a151-ef2b-6607-8f5c4a8cbd1b@audiosystemsgroup.com> <1317843741.19288384.1547433971496@mail.yahoo.com> <2e693359-e72c-55cd-caab-738a2b57f904@triconet.org> Message-ID: <7078c439-29b3-dcca-2d19-2a77d5bfd337@audiosystemsgroup.com> On 1/14/2019 6:32 PM, Wes Stewart wrote: > You do realize that if the common-mode current on the line is due to > asymmetry between the antenna and the line, then choking at the > feed-point reduces the CM current at that point, but just like your > example said, a quarter wave *down* the line you have a CM peak. Yes, but the choke at the feedpoint prevents that common mode current coupling to/from the antenna, which is how it gets inside the feedline as a differential mode signal. And the common mode current on the line below the choke is that induced by the field from the antenna, not from any imbalance in the antenna. > If asymmetry isn't an issue then open wire is just fine with a balun > at the tuner and I say this while not being a fan of open wire fed > antennas. And it's also not an issue if you have no local noise sources, a luxury that I think you said you have. > > I'm also somewhat bemused by the cottage industry that's sprung up in > the last few years to calm the hand wringing about common mode > current.? I think there's been a lot of development of cures that are > looking for ailments.? In my curmudgeonly opinion of course :-) If you had local noise you might view things differently. :) FWIW, I wasn't the first to realize the relationship between common mode current and RX noise -- I picked up on it from a long treatise that W1HIS wrote around the time I was doing my work. And I contributed pieces of the puzzle that he didn't know about, most importantly, the equivalent circuit of a choke and the importance of a high resistive impedance. 73, Jim K9YC From n6tv at arrl.net Tue Jan 15 00:58:48 2019 From: n6tv at arrl.net (Bob Wilson, N6TV) Date: Mon, 14 Jan 2019 21:58:48 -0800 Subject: [Elecraft] K3 Sub-receiver RIT In-Reply-To: References: Message-ID: On Sun, Jan 13, 2019 at 9:15 AM K9MA wrote: > I've found that during some contest operation, it's handy to call CQ on > VFO B, while using VFO A to search and pounce. (Known as Single Operator > 2 VFO mode, SO2V.) That way, when unassisted, I can use the P3 to locate > promising signals. However, I sometimes wish the RIT would work with the > sub-receiver on VFO B. Has anyone found a way to do this? Even better > would be to have RIT on VFO B and XIT on VFO A. > When running SO2V unassisted, I find it easiest to do the opposite: CQ on VFO A, and S&P on VFO B. Then you can have the RIT on A and watch the VFO B cursor track VFO B. Of course if you get too far away from your run frequency, you'll have to increase the P3 span so that you can still the VFO B cursor, but this is the best way around this problem for now, without resorting to extra hardware. Of course assisted operators can just send a spot to VFO B to have a listen. 73, Bob, N6TV From norrislawfirm2 at gmail.com Tue Jan 15 03:03:06 2019 From: norrislawfirm2 at gmail.com (Eric Norris) Date: Tue, 15 Jan 2019 00:03:06 -0800 Subject: [Elecraft] New DSP Idea In-Reply-To: References: <6D6C8E6B-EFBF-400E-B2D0-ED58FFF4114A@comcast.net> Message-ID: I find the K3's NB function fantastic. NR works very well, but it takes a while to tweak it in. Bill's idea below sounds like a great idea! 73 Eric WD6DBM On Mon, Jan 14, 2019, 9:42 AM Bill Frantz The NR change I would like is "just" a UI change. If I could > temporarily set up two knobs to change the two parameters it > would be a lot easier to play with the settings and find the > best combo. Having one knob means having to remember how well a > setting several twists away works; much harder. > > 73 Bill AE6JV > > > From ed at w0yk.com Tue Jan 15 07:10:49 2019 From: ed at w0yk.com (Ed W0YK) Date: Tue, 15 Jan 2019 04:10:49 -0800 Subject: [Elecraft] 500Hz Filter Offset Question In-Reply-To: <1493143719.2887999.1547529878559.JavaMail.root@starpower.net> Message-ID: "Out of Stock"?? Scott will order a batch if there is enough interest, usually 10 minimum.? 73,Ed W0YK -------- Original message --------From: donovanf at starpower.net Date: 1/14/19 21:24 (GMT-08:00) To: Elecraft Subject: Re: [Elecraft] 500Hz Filter Offset Question oops. The Elecraft 500 Hz 8 pole filter is discontinued... http://www.inrad.net/product.php?productid=316&cat=140 73 Frank W3LPL ----- Original Message ----- From: "Mark Musick" To: "Rich" , donwilh at embarqmail.com, "Elecraft" Sent: Tuesday, January 15, 2019 12:17:05 AM Subject: Re: [Elecraft] 500Hz Filter Offset Question INRAD has 500Hz 8 pole filters for the K3/K3S. I have one in the main receiver and one in the sub-receiver. Mark, WB9CIF -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Rich Sent: Monday, January 14, 2019 23:56 To: donwilh at embarqmail.com; Elecraft Subject: Re: [Elecraft] 500Hz Filter Offset Question Thanks all. I did read the manual, but it would help if I had read the entire paragraph and not just one sentence. In this case they sent me all matching offsets, so they are all the same. I was surprised that they do not have 500hz 8 pole. Oh well, back to putting the radio back together Ric On 1/14/2019 18:42 PM, Don Wilhelm wrote: > Rich, > > Wrong - you must enter the offset frequency. > Related - what is true is that you do not need matched filters in the > main and the subRX for Diversity reception with the new synthesizers. > > There are plots on the Elecraft website showing the filter response. I > don't recall if the 500 Hz filters are included. > > 73, > Don W3FPR > > On 1/14/2019 5:30 PM, Rich wrote: >> >> So now that I have 5 pole filters, I seem to recall that entering the >> offset freq is not required any longer on the K3S, is that true? >> >> Also does a K3 upgraded with K3S features need the offset freq? >> >> I should mention that they are all matched. >> > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to markmusick at outlook.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to donovanf at starpower.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ed at w0yk.com From w2up at comcast.net Tue Jan 15 09:06:24 2019 From: w2up at comcast.net (Barry) Date: Tue, 15 Jan 2019 07:06:24 -0700 (MST) Subject: [Elecraft] Battery Low K3 In-Reply-To: <36D949A0-C761-48A9-B761-12814E15256C@mac.com> References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> <9662FA91-B233-4533-A7AC-A071A5A8D528@Alphadene.co.uk> <36D949A0-C761-48A9-B761-12814E15256C@mac.com> Message-ID: <1547561184261-0.post@n2.nabble.com> Yes, Battery Low refers to your external (12V) power supply voltage. It's a confusing term and should be changed, as almost nobody uses a battery for their main supply on the K3, so why is it called a battery? Regarding the RTC, it doesn't keep very good RT, so is there any harm in just letting it go dead and not replacing it? Barry W2UP -- Sent from: http://elecraft.365791.n2.nabble.com/ From gkidder at ilstu.edu Tue Jan 15 09:37:00 2019 From: gkidder at ilstu.edu (Kidder, George) Date: Tue, 15 Jan 2019 14:37:00 +0000 Subject: [Elecraft] Battery Low K3 In-Reply-To: <1547561184261-0.post@n2.nabble.com> References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> <9662FA91-B233-4533-A7AC-A071A5A8D528@Alphadene.co.uk> <36D949A0-C761-48A9-B761-12814E15256C@mac.com> <1547561184261-0.post@n2.nabble.com> Message-ID: <1476b875-b659-f705-8cfe-9141199df337@ilstu.edu> On 1/15/2019 9:06 AM, Barry wrote: > Yes, Battery Low refers to your external (12V) power supply voltage. It's a > confusing term and should be changed, as almost nobody uses a battery for > their main supply on the K3, so why is it called a battery? I use a battery maintained by a charger system - complete uninterruptible 12V power.? Guess I'm? "almost nobody". > > Regarding the RTC, it doesn't keep very good RT, so is there any harm in > just letting it go dead and not replacing it? Having a dead battery corroding in your radio is not a good thing.? And for the work required to remove it, you might as well replace it and get another decade of service. George, W3HBM > > > Barry W2UP > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to gkidder at ilstu.edu From wes_n7ws at triconet.org Tue Jan 15 09:40:33 2019 From: wes_n7ws at triconet.org (Wes Stewart) Date: Tue, 15 Jan 2019 07:40:33 -0700 Subject: [Elecraft] Testing In-Reply-To: <8cf1a9a8-11fc-96d4-4e19-07ca67b9f446@embarqmail.com> References: <8cf1a9a8-11fc-96d4-4e19-07ca67b9f446@embarqmail.com> Message-ID: In case I didn't mention it to the group: My ISP had set spam filtering to "extreme" and was blocking all of my list servers. All of the messages were still there in quarantine on my webmail server which I never use.? My normal client is Thunderbird which is clueless in this case. Thanks for all the private replies. Wee > > On 1/14/2019 5:05 PM, Wes Stewart wrote: >> I've been having a problem were my posts are either not making it to the >> reflector or are not coming back to me as a copy, even though they always >> have and that is my preference in settings. >> >> Will someone let me know if they see this post.? One person will be plenty. >> >> Thanks Wes? N7WS >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donwilh at embarqmail.com > From john at kk9a.com Tue Jan 15 09:54:38 2019 From: john at kk9a.com (john at kk9a.com) Date: Tue, 15 Jan 2019 09:54:38 -0500 Subject: [Elecraft] 500Hz Filter Offset Question Message-ID: I was curious what the real bandwith of the 500Hz filter is and I found this nice article. http://www.nccc.cc/archived_meetings/pdf/K3%20Filters,%20Jan%202009.pdf FWIW, I really like the 8pole 400Hz which I have turn on at 450Hz. John KK9A Ed W0YK wrote: "Out of Stock" Scott will order a batch if there is enough interest, usually 10 minimum. 73,Ed W0YK From fhmassey at gmail.com Tue Jan 15 10:16:21 2019 From: fhmassey at gmail.com (Fred Massey) Date: Tue, 15 Jan 2019 09:16:21 -0600 Subject: [Elecraft] K3/0 headset or desk mic suggestions Message-ID: I purchased a heil headset, and I?m running into a bias problem using the K3/0. I want to work the SSB NAQP remotely and need my hands to be free. Has anyone a solution to using a K3/0 with either a headset or desk mic? 73, Fred AE4ED From fhmassey at gmail.com Tue Jan 15 10:53:08 2019 From: fhmassey at gmail.com (Fred Massey) Date: Tue, 15 Jan 2019 09:53:08 -0600 Subject: [Elecraft] K3/0 headset or desk mic suggestions In-Reply-To: References: Message-ID: I got the heil mic to work by using the jack on the left side of the K3/0, and setting the configuration to rp.l. On Tue, Jan 15, 2019 at 9:16 AM Fred Massey wrote: > I purchased a heil headset, and I?m running into a bias problem using the > K3/0. > > I want to work the SSB NAQP remotely and need my hands to be free. > > Has anyone a solution to using a K3/0 with either a headset or desk mic? > > 73, > Fred AE4ED > From indians at xsmail.com Tue Jan 15 11:35:33 2019 From: indians at xsmail.com (Petr, OK1RP/M0SIS) Date: Tue, 15 Jan 2019 09:35:33 -0700 (MST) Subject: [Elecraft] Battery Low K3 In-Reply-To: <36D949A0-C761-48A9-B761-12814E15256C@mac.com> References: <371A58E9-BBF3-4AC6-8929-2FF9B5EC1ACE@yahoo.com> <9662FA91-B233-4533-A7AC-A071A5A8D528@Alphadene.co.uk> <36D949A0-C761-48A9-B761-12814E15256C@mac.com> Message-ID: <1547570133791-0.post@n2.nabble.com> Hi, some people discussed in different threat which kind of manufacturer of CR2032 is recommended? I have long time great experiences with Renata > Made in Switzerland. No Chinese cell... Hope it helps, ----- 73 - Petr, OK1RP "Apple & Elecraft freak" B:http://ok1rp.blogspot.com G+:http://goo.gl/w3u2s9 G+: http://goo.gl/gP99xq -- Sent from: http://elecraft.365791.n2.nabble.com/ From 1lasportsman at cox.net Tue Jan 15 11:47:38 2019 From: 1lasportsman at cox.net (1lasportsman 1lasportsman) Date: Tue, 15 Jan 2019 10:47:38 -0600 (CST) Subject: [Elecraft] K3/0 headset or desk mic suggestions In-Reply-To: References: Message-ID: <790465813.1141858.1547570858509@myemail.cox.net> I have used a Heil headset and the desk Heil HM12 and also a Kenwood mike all wired for the kenwood. they all work fine. > On January 15, 2019 at 9:16 AM Fred Massey wrote: > > > I purchased a heil headset, and I?m running into a bias problem using the > K3/0. > > I want to work the SSB NAQP remotely and need my hands to be free. > > Has anyone a solution to using a K3/0 with either a headset or desk mic? > > 73, > Fred AE4ED > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to 1lasportsman at cox.net mailto:1lasportsman at cox.net > From ka9zap at gmail.com Tue Jan 15 12:04:54 2019 From: ka9zap at gmail.com (Arthur Nienhouse) Date: Tue, 15 Jan 2019 11:04:54 -0600 Subject: [Elecraft] Phillips screwdrivers Message-ID: */Don Good advice on shinny? Phillips drivers. Are the screws in the Elecraft products American Phillips, or JIS Japanese Industrial Standard? JIS which all the Japanese radios use, for my Icom radios I use a set of Hozan screw drivers to fix the Cam-Outs issue destroying the head of the screws, the difference is subtle. I was told years ago the fit is right if the small screw stays on the screw driver holding it vertical with out magnetism keeping it attached. Regards Art ka9zap /* From k9ma at sdellington.us Tue Jan 15 12:12:40 2019 From: k9ma at sdellington.us (K9MA) Date: Tue, 15 Jan 2019 11:12:40 -0600 Subject: [Elecraft] K3 Sub-receiver RIT In-Reply-To: References: Message-ID: <42059179-d888-81cc-4154-aed348be2e8e@sdellington.us> "Of course if you get too far away from your run frequency, you'll have to increase the P3 span so that you can still the VFO B cursor" Therein lies the problem: With the span set to more than 10 kHz, it's very hard to resolve CW signals on the P3. A VGA display would help, of course, but I'd rather not go that way. Anyhow, I'm hoping maybe just a little mod to the K3(s) firmware could provide a way to use RIT with VFO B. 73, Scott K9MA On 1/14/2019 23:58, Bob Wilson, N6TV wrote: > On Sun, Jan 13, 2019 at 9:15 AM K9MA > wrote: > > I've found that during some contest operation, it's handy to call > CQ on > VFO B, while using VFO A to search and pounce. (Known as Single > Operator > 2 VFO mode, SO2V.) That way, when unassisted, I can use the P3 to > locate > promising signals. However, I sometimes wish the RIT would work > with the > sub-receiver on VFO B. Has anyone found a way to do this? Even better > would be to have RIT on VFO B and XIT on VFO A. > > > When running SO2V unassisted, I find it easiest to do the opposite:? > CQ on VFO A, and S&P on VFO B.? Then you can have the RIT on A and > watch the VFO B cursor track VFO B. Of course if you get too far away > from your run frequency, you'll have to increase the P3 span so that > you can still the VFO B cursor, but this is the best way around this > problem for now, without resorting to extra hardware. > > Of course assisted operators can just send a spot to VFO B to have a > listen. > > 73, > Bob, N6TV -- Scott K9MA k9ma at sdellington.us From rmcgraw at blomand.net Tue Jan 15 12:13:58 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Tue, 15 Jan 2019 11:13:58 -0600 Subject: [Elecraft] Phillips screwdrivers In-Reply-To: References: Message-ID: <8cce0b1a-89f6-18c7-2cc6-c4002ced7e4b@blomand.net> Just be glad they don't use TOTSU screws typical of many Japanese products.???? i.e? the dot and slot ones.??? Find one of those screwdrivers at Harbor Freight. 73 Bob, K4TAX On 1/15/2019 11:04 AM, Arthur Nienhouse wrote: > */Don > Good advice on shinny? Phillips drivers. > > Are the screws in the Elecraft products American Phillips, or JIS > Japanese Industrial Standard? > > JIS which all the Japanese radios use, for my Icom radios I use a set > of Hozan screw drivers to fix the Cam-Outs issue destroying the head > of the screws, the difference is subtle. > > I was told years ago the fit is right if the small screw stays on the > screw driver holding it vertical with out magnetism keeping it attached. > > Regards > Art > ka9zap > /* > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From elecraftcovers at gmail.com Tue Jan 15 12:24:51 2019 From: elecraftcovers at gmail.com (Rose) Date: Tue, 15 Jan 2019 10:24:51 -0700 Subject: [Elecraft] Phillips screwdrivers In-Reply-To: <8cce0b1a-89f6-18c7-2cc6-c4002ced7e4b@blomand.net> References: <8cce0b1a-89f6-18c7-2cc6-c4002ced7e4b@blomand.net> Message-ID: I highly recommend "Posidriv" for most "Phillips" applications. The sides of the four blades are parallel. 73 ! Ken - K0PP On Tue, Jan 15, 2019, 10:15 Bob McGraw K4TAX Just be glad they don't use TOTSU screws typical of many Japanese > products. i.e the dot and slot ones. Find one of those > screwdrivers at Harbor Freight. > > 73 > > Bob, K4TAX > > On 1/15/2019 11:04 AM, Arthur Nienhouse wrote: > > */Don > > Good advice on shinny Phillips drivers. > > > > Are the screws in the Elecraft products American Phillips, or JIS > > Japanese Industrial Standard? > > > > JIS which all the Japanese radios use, for my Icom radios I use a set > > of Hozan screw drivers to fix the Cam-Outs issue destroying the head > > of the screws, the difference is subtle. > > > > I was told years ago the fit is right if the small screw stays on the > > screw driver holding it vertical with out magnetism keeping it attached. > > > > Regards > > Art > > ka9zap > > /* > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to rmcgraw at blomand.net > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to elecraftcovers at gmail.com From keith at elecraft.com Tue Jan 15 12:37:36 2019 From: keith at elecraft.com (Keith Trinity WE6R) Date: Tue, 15 Jan 2019 09:37:36 -0800 Subject: [Elecraft] Battery Low K3 In-Reply-To: <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> References: <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> Message-ID: If you don't use the clock, just take the CR2032 battery out! Save money and ease your minds about leaking. However, I have never seen one leak in the thousands of K3's I have worked on. I have only replaced the battery upon request as I have never seen one actually be dead. There is no indication that the internal clock battery is low or dead other than the clock does keep time To see if it is dead, just set the clock then turn off the radio and pull the DC power. Time will be wacky when you check it. Also if you take the Front Panel off the radio, the clock will need resetting. If you see BAT LOW, your DC supply voltage is lower than the setting in the BAT MIN config menu. Not related to the clock battery. Keith WE6R From donwilh at embarqmail.com Tue Jan 15 12:46:16 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Tue, 15 Jan 2019 12:46:16 -0500 Subject: [Elecraft] Phillips screwdrivers In-Reply-To: References: Message-ID: <82b2c053-d6c3-e470-cd7e-846cbc801d99@embarqmail.com> Art, The Elecraft screws are American Phillips #1 size. Use quality tools and you will be rewarded - bypass the bargain-bin selections. Poor quality tools lead to injury to your body as well as damaged parts. I have found good quality screwdrivers at Ace Hardware, but my favorite is Excelite. Yes, if you are working on Japanese radios, you will need JIS. 73, Don W3FPR On 1/15/2019 12:04 PM, Arthur Nienhouse wrote: > */Don > Good advice on shinny? Phillips drivers. > > Are the screws in the Elecraft products American Phillips, or JIS > Japanese Industrial Standard? > > JIS which all the Japanese radios use, for my Icom radios I use a set of > Hozan screw drivers to fix the Cam-Outs issue destroying the head of the > screws, the difference is subtle. > > I was told years ago the fit is right if the small screw stays on the > screw driver holding it vertical with out magnetism keeping it attached. > > Regards > Art > ka9zap > /* > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com From wunder at wunderwood.org Tue Jan 15 14:04:39 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Tue, 15 Jan 2019 11:04:39 -0800 Subject: [Elecraft] Query for new DSP features In-Reply-To: <77367f72-ef32-d948-4bd3-8f7ced3f30cd@triconet.org> References: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> <8c1661a6-4d5d-6b80-69c5-493d9adfd25a@david-woolley.me.uk> <77367f72-ef32-d948-4bd3-8f7ced3f30cd@triconet.org> Message-ID: <69AE6703-0294-4866-B1EC-044C78EAEC8C@wunderwood.org> I?ll give a quick summary of that preso. The longest section is about noise blankers, not noise reduction. He discusses three types. First, the traditional blanker that takes the signal to zero during a detected impulse. Second, an interpolating blanker that replaces the impulse-affected samples with samples that have a linear slope between the samples before and after. Finally, a linear predictive coding (LPC) blanker that uses speech coding, detects large changes in the coefficients, then removes them. Nice for impulse noise, but it would probably fail very strangely for voice QRM because it would train on the QRM as well as the signal. He shows that it is superior to the other blankers for CW QRM. Of course, the other noise blankers are designed for impulse noise, not CW QRM. For noise reduction, he gives a quick hand wave description of the Ephraim and Malah MMSE spectral noise reduction. That makes a short time base FFT, removes offending frequency sections, then converts it back to the time domain. He mentions recent work on that by some Germans. I?m guessing they are Gerkmann and Hendricks. He mentions, but doesn?t even handwave the LMS adaptive filter approach. I believe that is the algorithm used by Elecraft. Normally, an adaptive filter is used to optimize the filtering for a known waveform, picking it out of the noise. For noise reduction, we do the opposite and train the filter on the noise, then filter it out. The impulse noise blankers and the LMS adaptive filter both work better with a wider receive bandwidth. That gives them more information about the noise and makes it easier to remove. The LPC blanker and MMSE noise reduction characterize the signal, so they should work better with a narrower receive bandwidth. I might have gotten some of this wrong. I did quick listen to the preso and a short literature search. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 14, 2019, at 6:53 PM, Wes Stewart wrote: > > https://www.youtube.com/watch?v=FrVDL_-HOds starting at 41 minutes. Particularly at 1 hour 3 minutes. > > On 1/12/2019 9:51 AM, David Woolley wrote: >> Do you have a reference for an algorithm that will do this? > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From pincon at erols.com Tue Jan 15 14:14:29 2019 From: pincon at erols.com (Charlie T) Date: Tue, 15 Jan 2019 14:14:29 -0500 Subject: [Elecraft] Phillips screwdrivers In-Reply-To: References: <8cce0b1a-89f6-18c7-2cc6-c4002ced7e4b@blomand.net> Message-ID: <004401d4ad06$8d154f20$a73fed60$@erols.com> I use the VESSEL brand JIS drivers for Phillips & JIS screws. 73, Charlie k3ICH -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Rose Sent: Tuesday, January 15, 2019 12:25 PM To: Bob McGraw K4TAX Cc: Elecraft Reflector Subject: Re: [Elecraft] Phillips screwdrivers I highly recommend "Posidriv" for most "Phillips" applications. The sides of the four blades are parallel. 73 ! Ken - K0PP On Tue, Jan 15, 2019, 10:15 Bob McGraw K4TAX Just be glad they don't use TOTSU screws typical of many Japanese > products. i.e the dot and slot ones. Find one of those > screwdrivers at Harbor Freight. > > 73 > > Bob, K4TAX > > On 1/15/2019 11:04 AM, Arthur Nienhouse wrote: > > */Don > > Good advice on shinny Phillips drivers. > > > > Are the screws in the Elecraft products American Phillips, or JIS > > Japanese Industrial Standard? > > > > JIS which all the Japanese radios use, for my Icom radios I use a > > set of Hozan screw drivers to fix the Cam-Outs issue destroying the > > head of the screws, the difference is subtle. > > > > I was told years ago the fit is right if the small screw stays on > > the screw driver holding it vertical with out magnetism keeping it attached. > > > > Regards > > Art > > ka9zap > > /* > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net Please help support this > > email list: http://www.qsl.net/donate.html Message delivered to > > rmcgraw at blomand.net > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to > elecraftcovers at gmail.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to pincon at erols.com From ghyoungman at gmail.com Tue Jan 15 14:23:16 2019 From: ghyoungman at gmail.com (Grant Youngman) Date: Tue, 15 Jan 2019 14:23:16 -0500 Subject: [Elecraft] Battery Low K3 In-Reply-To: References: <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> Message-ID: <3180BE05-7EC1-458D-B158-E19A43DC4A4D@gmail.com> I?ve never seen one leak, either. CR2032 batteries are ubiquitous. My car fobs, various other electronic remotes, my memory keyer, portable calculator, gate and garage door openers, and several other odd bits around the house use them and others of the same chemistry but different physical size) all over the place. I have allowed to sit in their devices unused for years. Maybe I live a charmed life, but I have NEVER seen one ?leak? and destroy something. (Wish I could say that about AAA Duracells, which were designed specifically to destroy whatever you put them in). I don?t think how-ever-many-thousand K3 radios out there need to be opened up, the 2m module removed, the 2nd receiver module removed, just to make sure the battery isn?t leaking. Of course I don?t use the Cute Kitty (or whatever) brand battery from the cheap imported junk store, either. There?s a tendency to unnecessarily generate a sense of panic over everything ? Grant NQ5T K3 #2091 KX3 #8342 > On Jan 15, 2019, at 12:37 PM, Keith Trinity WE6R wrote: > > However, I have never seen one leak in the thousands of K3's I have worked on. > I have only replaced the battery upon request as I have never seen one actually be dead. > From KX3.2 at ColdRocksHotBrooms.com Tue Jan 15 14:27:23 2019 From: KX3.2 at ColdRocksHotBrooms.com (Lynn W. Taylor, WB6UUT) Date: Tue, 15 Jan 2019 11:27:23 -0800 Subject: [Elecraft] Phillips screwdrivers In-Reply-To: <004401d4ad06$8d154f20$a73fed60$@erols.com> References: <8cce0b1a-89f6-18c7-2cc6-c4002ced7e4b@blomand.net> <004401d4ad06$8d154f20$a73fed60$@erols.com> Message-ID: <74cb2cde-f570-17cf-d0de-75f19fbe394f@ColdRocksHotBrooms.com> I see the subject and I keep thinking "Vodka and Milk of Magnesia." From k2vco.vic at gmail.com Tue Jan 15 15:15:32 2019 From: k2vco.vic at gmail.com (Victor Rosenthal 4X6GP) Date: Tue, 15 Jan 2019 22:15:32 +0200 Subject: [Elecraft] Battery Low K3 In-Reply-To: References: <677C56E2-1E8D-41FF-A5A8-13A8498BE52B@yahoo.com> Message-ID: <4458fc3d-255b-c6f1-fa32-50b193467132@gmail.com> My K3 is serial no. 0007 and the clock is still running on the original battery. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 15/01/2019 19:37, Keith Trinity WE6R wrote: > If you don't use the clock, just take the CR2032 battery out! > Save money and ease your minds about leaking. > However, I have never seen one leak in the thousands of K3's I have > worked on. > I have only replaced the battery upon request as I have never seen one > actually be dead. > There is no indication that the internal clock battery is low or dead > other than the clock does keep time > To see if it is dead, just set the clock then turn off the radio and > pull the DC power. Time will be wacky when you check it. > Also if you take the Front Panel off the radio, the clock will need > resetting. > > If you see BAT LOW, your DC supply voltage is lower than the setting in > the BAT MIN config menu. > Not related to the clock battery. > Keith WE6R > From bill at watershipfarm.com Tue Jan 15 15:23:18 2019 From: bill at watershipfarm.com (William Rascher) Date: Tue, 15 Jan 2019 14:23:18 -0600 Subject: [Elecraft] Phillips screwdrivers In-Reply-To: <74cb2cde-f570-17cf-d0de-75f19fbe394f@ColdRocksHotBrooms.com> References: <004401d4ad06$8d154f20$a73fed60$@erols.com> <74cb2cde-f570-17cf-d0de-75f19fbe394f@ColdRocksHotBrooms.com> Message-ID: <2530120.rKrZgua3gt@linux-hq78> On Tuesday, January 15, 2019 1:27:23 PM CST Lynn W. Taylor, WB6UUT wrote: > I see the subject and I keep thinking "Vodka and Milk of Magnesia." Thank you for the laugh, it feels good not to be alone... 73, Bill KT5TE From kt5te at watershipfarm.com Tue Jan 15 15:23:58 2019 From: kt5te at watershipfarm.com (kt5te at watershipfarm.com) Date: Tue, 15 Jan 2019 14:23:58 -0600 Subject: [Elecraft] Phillips screwdrivers In-Reply-To: <74cb2cde-f570-17cf-d0de-75f19fbe394f@ColdRocksHotBrooms.com> References: <004401d4ad06$8d154f20$a73fed60$@erols.com> <74cb2cde-f570-17cf-d0de-75f19fbe394f@ColdRocksHotBrooms.com> Message-ID: <7317732.NxsQKyZtaq@linux-hq78> On Tuesday, January 15, 2019 1:27:23 PM CST Lynn W. Taylor, WB6UUT wrote: > I see the subject and I keep thinking "Vodka and Milk of Magnesia." Thank you for the laugh, it feels good not to be alone... 73, Bill KT5TE From kl7uw at acsalaska.net Tue Jan 15 15:35:13 2019 From: kl7uw at acsalaska.net (Edward R Cole) Date: Tue, 15 Jan 2019 11:35:13 -0900 Subject: [Elecraft] PX3: Use outside in bright sunlight Message-ID: <201901152035.x0FKZGUm018746@mail41c28.carrierzone.com> I've wondered how well the PX3 screen displays in bright sunlight. I Use my KX3-2M as IF for my portable 10-GHz station and display of spectrum would be handy for finding mw signals. But this is activity on a high hill or mountain or lake/oceanside location (not in a darkened vehicle or your home). Typical LCD laptops screens are unusable in bright light so wonder about the PX3. Not interested in the P3 for my K3, just the PX3. 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: dubususa at gmail.com From brian.waterworth at gmail.com Tue Jan 15 15:57:38 2019 From: brian.waterworth at gmail.com (Brian Waterworth) Date: Tue, 15 Jan 2019 12:57:38 -0800 Subject: [Elecraft] PX3: Use outside in bright sunlight In-Reply-To: <201901152035.x0FKZGUm018746@mail41c28.carrierzone.com> References: <201901152035.x0FKZGUm018746@mail41c28.carrierzone.com> Message-ID: I use my PX3 on a sailboat in a go-kit and frequently sit out in the cockpit with the PX3-KX3 and a Raspberry PI 7" touch screen (and RPI of course). I do have to turn-up the PX3 LCD brightness pretty high though. But the PX3 can get bright enough for me. It does consume more power of course. regards, Brian VE3IBW From gt-i at gmx.net Tue Jan 15 16:29:01 2019 From: gt-i at gmx.net (gt-i at gmx.net) Date: Tue, 15 Jan 2019 22:29:01 +0100 Subject: [Elecraft] K3 Sub-receiver RIT In-Reply-To: <007f01d4ac75$5b5a1b50$120e51f0$@com> References: <007f01d4ac75$5b5a1b50$120e51f0$@com> Message-ID: John, the issue with SO2V is that you want to stay on your run frequency, but be able to slightly tune up and down to hear callers which are not exactly on your TX freq. RIT comes in handy here, as you just press RIT or CLR after the QSO is finished. I don't have a K-POD, but if it would let me do this stuff I'd consider buying one. 73 Gernot DF5RF Am 15.01.2019 um 02:55 schrieb john at kk9a.com: > If you have a K-Pod it is just as easy to tune with VFO B while running on > A. Is the issue the way the P3 is used to move in on a signal? I have K-Pod > buttons to turn RIT on and off and also to clear the offset. > > John KK9A > > > K9MA wrote: > > I've found that during some contest operation, it's handy to call CQ on > VFO B, while using VFO A to search and pounce. (Known as Single Operator > 2 VFO mode, SO2V.) That way, when unassisted, I can use the P3 to locate > promising signals. However, I sometimes wish the RIT would work with the > sub-receiver on VFO B. Has anyone found a way to do this? Even better > would be to have RIT on VFO B and XIT on VFO A. > > If it's not currently possible, I'd add it to my firmware wish list. > > 73, > > Scott K9MA > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to gt-i at gmx.net > From frantz at pwpconsult.com Tue Jan 15 16:45:39 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Tue, 15 Jan 2019 13:45:39 -0800 Subject: [Elecraft] PX3: Use outside in bright sunlight In-Reply-To: <201901152035.x0FKZGUm018746@mail41c28.carrierzone.com> Message-ID: Our club has its summer picnic during the NAQP SSB contest. We set up a radio with the logging laptop inside a 15"-20" deep cardboard box on a picnic table in the full August sun. We don't have significant issues reading the laptop screen. 73 Bill AE6JV On 1/15/19 at 12:35 PM, kl7uw at acsalaska.net (Edward R Cole) wrote: >I've wondered how well the PX3 screen displays in bright >sunlight. I Use my KX3-2M as IF for my portable 10-GHz station >and display of spectrum would be handy for finding mw signals. >But this is activity on a high hill or mountain or >lake/oceanside location (not in a darkened vehicle or your home). > >Typical LCD laptops screens are unusable in bright light so >wonder about the PX3. Not interested in the P3 for my K3, just >the PX3. ----------------------------------------------------------------------- Bill Frantz |Security, like correctness, is| Periwinkle (408)356-8506 |not an add-on feature. - Attr-| 16345 Englewood Ave www.pwpconsult.com |ibuted to Andrew Tanenbaum | Los Gatos, CA 95032 From kf5wdj at att.net Tue Jan 15 16:55:36 2019 From: kf5wdj at att.net (kf5wdj at att.net) Date: Tue, 15 Jan 2019 15:55:36 -0600 Subject: [Elecraft] 100 watt K3S Raffle Message-ID: <190301d4ad1d$0c7a1050$256e30f0$@att.net> The Midland Amateur Radio Club in Midland, Texas is raffling a 100 watt K3S with MH4 hand held microphone. The cost is $20 per ticket and a maximum of 300 tickets will be sold. The drawing will be held during our 64th Annual St. Patrick's Day Hamfest on the 16th of March. This is a great radio and the odds of winning aren't bad. You can find the web page on the St. Patrick's Day Web Site at https://hamfest.w5qgg.org You do not have to be present to win. Best of Luck! From donwilh at embarqmail.com Tue Jan 15 17:04:51 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Tue, 15 Jan 2019 17:04:51 -0500 Subject: [Elecraft] K3 Sub-receiver RIT In-Reply-To: References: <007f01d4ac75$5b5a1b50$120e51f0$@com> Message-ID: Gernot, If you have the subRX, why not tune to listen for those off-frequency stations with the VFO B knob. Your transmit frequency is unchanged on VFO A, so no need for RIT unless you are only listening to the mainRX. An easy VFO A>B pushbutton will put VFO on the same frequency as VFO A anytime you change your transmit frequency. 73, Don W3FPR On 1/15/2019 4:29 PM, gt-i at gmx.net wrote: > John, > the issue with SO2V is that you want to stay on your run frequency, but > be able to slightly tune up and down to hear callers which are not > exactly on your TX freq. RIT comes in handy here, as you just press RIT > or CLR after the QSO is finished. I don't have a K-POD, but if it would > let me do this stuff I'd consider buying one. From forums at david-woolley.me.uk Tue Jan 15 17:40:16 2019 From: forums at david-woolley.me.uk (David Woolley) Date: Tue, 15 Jan 2019 22:40:16 +0000 Subject: [Elecraft] Query for new DSP features In-Reply-To: <77367f72-ef32-d948-4bd3-8f7ced3f30cd@triconet.org> References: <55349993-3C93-438A-B283-A4B2A787F783@aol.com> <8c1661a6-4d5d-6b80-69c5-493d9adfd25a@david-woolley.me.uk> <77367f72-ef32-d948-4bd3-8f7ced3f30cd@triconet.org> Message-ID: <5b850a5e-5569-7036-80d0-6be356966e8c@david-woolley.me.uk> The part at 1:03:00 involves a signal that had a large impulsive component, and was treated with a combination of noise blanking and noise reduction. Applying pure noise reduction wasn't going to help. You can actually see from the pure noise reduction example they played, that they were not comfortable with trying to do pure noise reduction on a signal that wasn't easily copyable without it. More importantly, nowhere from the 46 minutes mark do they describe their algorithms, although, as open source code, it will be possible to find them. I would assume that the K3 uses LMS. The spectral one needs similar but greater processing to that needed in the phase shifting proposal. It needs greater, in that the it has to compute the parameters by which to multiply the FFT bins on the fly, whereas the phase shifting case only needs to compute them when you turn the control knob. Consequently it is subject to the same performance question: does the K3 hardware actually have enough processing power to run the algorithm. (I assume LMS is used because the processing power requirements are rather less.) I don't know whether it has the power needed. My description of the general problem of noise reduction actually more accurately fits the spectral processing model. I believe LMS is trying to achieve a similar effect, but in a more computationally efficient manner. Pure morse code doesn't actually need complex noise reduction, as simply using a narrow filter will do the same thing as a good spectral noise reduction algorithm would attempt to achieve. It can, though, benefit from noise blanking. I say morse code, because a literally CW signal can get perfect (Gaussian) noise reduction by using an infinitesimally narrow filter. Actually, for a fair test, they should have also shown the result of applying a very narrow filter to the power-line noise example. Nothing in the part of the talk I listened to addressed the problem of distortion caused by the suppression algorithm, in particular the non-linearities caused by modifying the parameters on the fly. On 15/01/2019 02:53, Wes Stewart wrote: > https://www.youtube.com/watch?v=FrVDL_-HOds starting at 41 minutes. > Particularly at 1 hour 3 minutes. > > On 1/12/2019 9:51 AM, David Woolley wrote: >> Do you have a reference for an algorithm that will do this? > From k9ma at sdellington.us Tue Jan 15 19:29:31 2019 From: k9ma at sdellington.us (K9MA) Date: Tue, 15 Jan 2019 18:29:31 -0600 Subject: [Elecraft] K3 Sub-receiver RIT In-Reply-To: References: <007f01d4ac75$5b5a1b50$120e51f0$@com> Message-ID: You have to integrate SO2V operation with the logging software. If you just switch VFO's, you have to switch back to run mode when you go back to the run frequency. Any small delay improves the chances you'll miss a contact or lose the frequency, so it has to be very fast. With the software I use, ctl-right arrow switches both tx and rx to VFO B, and moves to the VFO B logging window. Ctl-left arrow switches back to VFO A. There's no issue with using RIT when running on A and searching with B, but then the P3 can't be used to find new signals more than 10 kHz from the run frequency. Running on B solves that problem, but then there's no RIT when running. Actually, while RIT on the search and pounce VFO is most important, XIT is more useful when running. The ideal SO2V radio would allow RIT on B and XIT on A, automatically switching with the logging software. 73, Scott K9MA On 1/15/2019 16:04, Don Wilhelm wrote: > Gernot, > > If you have the subRX, why not tune to listen for those off-frequency > stations with the VFO B knob.? Your transmit frequency is unchanged on > VFO A, so no need for RIT unless you are only listening to the mainRX. > > An easy VFO A>B pushbutton will put VFO on the same frequency as VFO A > anytime you change your transmit frequency. > > 73, > Don W3FPR > > On 1/15/2019 4:29 PM, gt-i at gmx.net wrote: >> John, >> the issue with SO2V is that you want to stay on your run frequency, >> but be able to slightly tune up and down to hear callers which are >> not exactly on your TX freq. RIT comes in handy here, as you just >> press RIT or CLR after the QSO is finished. I don't have a K-POD, but >> if it would let me do this stuff I'd consider buying one. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9ma at sdellington.us -- Scott K9MA k9ma at sdellington.us From k4to.dave at gmail.com Tue Jan 15 20:00:50 2019 From: k4to.dave at gmail.com (Dave Sublette) Date: Tue, 15 Jan 2019 20:00:50 -0500 Subject: [Elecraft] K3s Line Out (stereo) Message-ID: My K3s arrived over the weekend and I have been setting it up. I am using the rear Audio jacks to drive either headphones, or the Line out to drive an amplifier and two speakers in the stereo mode. The headphone jack has stereo output ok. But the line out only has right channel audio. Left channel has nothing but a low hum. I am testing them one at a time, using the same cable. So it is not a case of a bad cable. The plug inserts to the same depth in both the headphone and line out jacks, so I believe the plug is properly inserted, I have been through both the Main Menu and Config menus, item by item. I see nothing that would give the option to turn off the left channel of the line out. Anyone have any suggestions? Thanks, Dave, K4TO From ja-pierce at verizon.net Tue Jan 15 20:43:58 2019 From: ja-pierce at verizon.net (John Pierce) Date: Tue, 15 Jan 2019 20:43:58 -0500 Subject: [Elecraft] Driving KPAA500 from KX3 Message-ID: <00ee01d4ad3c$f3433ce0$d9c9b6a0$@verizon.net> Just got 220v to my shack. I put the 220V fuses into the KPA500 and connected the amp to 220v using the ELecraft power cable. I was expecting to do something to the transformer wiring in the KPA500, but did not see any instruction to do so. Is that all there is to powering the KPA500 from 220vac? John AD2F From wunder at wunderwood.org Tue Jan 15 20:57:17 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Tue, 15 Jan 2019 17:57:17 -0800 Subject: [Elecraft] Driving KPAA500 from KX3 In-Reply-To: <00ee01d4ad3c$f3433ce0$d9c9b6a0$@verizon.net> References: <00ee01d4ad3c$f3433ce0$d9c9b6a0$@verizon.net> Message-ID: See ?Mains Voltage Setting? starting on page 5 of the manual. https://ftp.elecraft.com/KPA/Manuals%20Downloads/E740150%20KPA500%20Owners%20man%20Rev%20D4.pdf wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 15, 2019, at 5:43 PM, John Pierce wrote: > > Just got 220v to my shack. I put the 220V fuses into the KPA500 and > connected the amp to 220v using the ELecraft power cable. I was expecting > to do something to the transformer wiring in the KPA500, but did not see any > instruction to do so. Is that all there is to powering the KPA500 from > 220vac? > > > > John > > AD2F > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From ja-pierce at verizon.net Tue Jan 15 21:15:48 2019 From: ja-pierce at verizon.net (John Pierce) Date: Tue, 15 Jan 2019 21:15:48 -0500 Subject: [Elecraft] Non-Resonant Antennas and Chokes Message-ID: <010c01d4ad41$65de6460$319b2d20$@verizon.net> I haven't read all the comments on this thread and thus may requesting redundant info. My antenna, for 40 mtr's, is a 67' wire up about 25'. I have 30' of 450 ohm ladder line connected to the end of the antenna and bringing the antenna into my basement. So I guess you could say that I have a non-resonant end fed Zepp. I can check the impedance at the end of the ladder line, where one side is the antenna and the other side is connected to a ground rod at the point of entering the house. I can measure the impedance of the antenna in the basement, using Mini60 without an antenna tuner . The ladder line is then connected to a MFJ 926B remote antenna tuner The tuner is fed by about 30' of RG58 coax from my transmitter. When I see a reactive component to the impedance of the ladder line, without the tuner connected, should I have some choke inserted in one side of the ladder line or not? Should the tuner be able to handle the reactive component? John AD2F From k4to.dave at gmail.com Tue Jan 15 21:33:16 2019 From: k4to.dave at gmail.com (Dave Sublette) Date: Tue, 15 Jan 2019 21:33:16 -0500 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: <92F9431D-EAB0-42BD-968F-8F38E602B2FE@gmail.com> References: <92F9431D-EAB0-42BD-968F-8F38E602B2FE@gmail.com> Message-ID: yes On Tue, Jan 15, 2019 at 9:05 PM Charles Jack Hawley wrote: > Config-Spkrs set to 2? > > Chuck Jack > KE9UW > > Sent from my iPhone, cjack > > > On Jan 15, 2019, at 7:01 PM, Dave Sublette wrote: > > > > My K3s arrived over the weekend and I have been setting it up. I am using > > the rear Audio jacks to drive either headphones, or the Line out to drive > > an amplifier and two speakers in the stereo mode. > > > > The headphone jack has stereo output ok. But the line out only has right > > channel audio. Left channel has nothing but a low hum. > > > > I am testing them one at a time, using the same cable. So it is not a > case > > of a bad cable. The plug inserts to the same depth in both the headphone > > and line out jacks, so I believe the plug is properly inserted, > > > > I have been through both the Main Menu and Config menus, item by item. I > > see nothing that would give the option to turn off the left channel of > the > > line out. > > > > Anyone have any suggestions? > > > > Thanks, > > > > Dave, K4TO > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to c-hawley at illinois.edu > From nr4c at widomaker.com Tue Jan 15 21:51:51 2019 From: nr4c at widomaker.com (Nr4c) Date: Tue, 15 Jan 2019 21:51:51 -0500 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: References: <92F9431D-EAB0-42BD-968F-8F38E602B2FE@gmail.com> Message-ID: Do you have a sub-receiver? Without it, I don?t think you have any signal to hear. Why use Line Out for speakers. There is a perfectly good jack marked Speakers right next to the Phones jack. Be sure and use a Stereo plug but it is for ........wait for it. Speakers! Sent from my iPhone ...nr4c. bill > On Jan 15, 2019, at 9:33 PM, Dave Sublette wrote: > > yes > > > On Tue, Jan 15, 2019 at 9:05 PM Charles Jack Hawley > wrote: > >> Config-Spkrs set to 2? >> >> Chuck Jack >> KE9UW >> >> Sent from my iPhone, cjack >> >>> On Jan 15, 2019, at 7:01 PM, Dave Sublette wrote: >>> >>> My K3s arrived over the weekend and I have been setting it up. I am using >>> the rear Audio jacks to drive either headphones, or the Line out to drive >>> an amplifier and two speakers in the stereo mode. >>> >>> The headphone jack has stereo output ok. But the line out only has right >>> channel audio. Left channel has nothing but a low hum. >>> >>> I am testing them one at a time, using the same cable. So it is not a >> case >>> of a bad cable. The plug inserts to the same depth in both the headphone >>> and line out jacks, so I believe the plug is properly inserted, >>> >>> I have been through both the Main Menu and Config menus, item by item. I >>> see nothing that would give the option to turn off the left channel of >> the >>> line out. >>> >>> Anyone have any suggestions? >>> >>> Thanks, >>> >>> Dave, K4TO >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to c-hawley at illinois.edu >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From k9ma at sdellington.us Tue Jan 15 23:23:56 2019 From: k9ma at sdellington.us (K9MA) Date: Tue, 15 Jan 2019 22:23:56 -0600 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: References: <92F9431D-EAB0-42BD-968F-8F38E602B2FE@gmail.com> Message-ID: <0600d94e-e046-7339-a6f1-6f0ee5390636@sdellington.us> I found that the level at headphone output, at least the rear panel one, was too low to drive two pairs of headphones in parallel in my setup, which includes some isolation transformers. The speaker output works fine with the headphones. (Don't try this with super sensitive low impedance headphones.) I just wired a switch to an external speaker. 73, Scott K9MA On 1/15/2019 20:51, Nr4c wrote: > Why use Line Out for speakers. There is a perfectly good jack marked Speakers right next to the Phones jack. Be sure and use a Stereo plug but it is for ........wait for it. Speakers! -- Scott K9MA k9ma at sdellington.us From k4to.dave at gmail.com Tue Jan 15 23:27:17 2019 From: k4to.dave at gmail.com (Dave Sublette) Date: Tue, 15 Jan 2019 23:27:17 -0500 Subject: [Elecraft] Old Dog -- New Tricks Message-ID: This is the third night operating my new K3s and P3. I have had a KX3/PX3 on the air for several years. I never use the waterfall. It just never seemed to useful to me. Tonight I connected my 20 inch monitor to the P3. Then I noticed I can see very faint traces in the waterfall. The signals are Q5 on CW and about S2, right at my noise floor on 160. Now I can spot DX traces pretty easily. Now I know how useful the waterfall can be. But it isn't apparent unless the monitor is large. The small screen isn't big enough for my old eyes. Thanks again, Elecraft for a beautiful bunch of gear. 73, Dave, K4TO From wes_n7ws at triconet.org Wed Jan 16 00:11:23 2019 From: wes_n7ws at triconet.org (Wes Stewart) Date: Tue, 15 Jan 2019 22:11:23 -0700 Subject: [Elecraft] Non-Resonant Antennas and Chokes In-Reply-To: <010c01d4ad41$65de6460$319b2d20$@verizon.net> References: <010c01d4ad41$65de6460$319b2d20$@verizon.net> Message-ID: <32691c7a-c74e-fec9-d60b-0e9cb220a059@triconet.org> Why don't you cut the dipole in the center, add an insulator and feed it with coax?? Put a CM choke at the feedpoint if you insist and lose the ladderline and tuner. Prune the wire length for resonance. Wes? N7WS On 1/15/2019 7:15 PM, John Pierce wrote: > I haven't read all the comments on this thread and thus may requesting > redundant info. My antenna, for 40 mtr's, is a 67' wire up about 25'. I > have 30' of 450 ohm ladder line connected to the end of the antenna and > bringing the antenna into my basement. So I guess you could say that I have > a non-resonant end fed Zepp. > > > > I can check the impedance at the end of the ladder line, where one side is > the antenna and the other side is connected to a ground rod at the point of > entering the house. I can measure the impedance of the antenna in the > basement, using Mini60 without an antenna tuner . The ladder line is then > connected to a MFJ 926B remote antenna tuner The tuner is fed by about 30' > of RG58 coax from my transmitter. When I see a reactive component to the > impedance of the ladder line, without the tuner connected, should I have > some choke inserted in one side of the ladder line or not? Should the tuner > be able to handle the reactive component? > > > > John > > AD2F > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wes_n7ws at triconet.org > From donwilh at embarqmail.com Wed Jan 16 00:38:32 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 16 Jan 2019 00:38:32 -0500 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: <0600d94e-e046-7339-a6f1-6f0ee5390636@sdellington.us> References: <92F9431D-EAB0-42BD-968F-8F38E602B2FE@gmail.com> <0600d94e-e046-7339-a6f1-6f0ee5390636@sdellington.us> Message-ID: <4ecdeaa3-034a-6f13-6913-d2818373c26f@embarqmail.com> Last Field Day, my K3 was used at the CW station. Two sets of headphones. One for the operator and one for the logger. One was plugged into the rear panel Phones jack and the other was plugged into the front panel jack. No problem, no splitter. Ok, if there were folks nearby who wanted to listen in, we would simply turn on SPKR+PHONES in the menu, and the speaker could also be heard. Very versatile. Why make it complicated - the K3 gives us the tools to do it 'the easy way'. 73, Don W3FPR On 1/15/2019 11:23 PM, K9MA wrote: > I found that the level at headphone output, at least the rear panel one, > was too low to drive two pairs of headphones in parallel in my setup, > which includes some isolation transformers. The speaker output works > fine with the headphones. (Don't try this with super sensitive low > impedance headphones.) I just wired a switch to an external speaker. > > 73, > Scott K9MA > > On 1/15/2019 20:51, Nr4c wrote: >> Why use Line Out for speakers. There is a perfectly good jack marked >> Speakers right next to the Phones jack. Be sure and use a Stereo plug >> but it is for ........wait for it.? Speakers! > > From k2vco.vic at gmail.com Wed Jan 16 03:33:05 2019 From: k2vco.vic at gmail.com (Victor Rosenthal 4X6GP) Date: Wed, 16 Jan 2019 10:33:05 +0200 Subject: [Elecraft] Non-Resonant Antennas and Chokes In-Reply-To: <010c01d4ad41$65de6460$319b2d20$@verizon.net> References: <010c01d4ad41$65de6460$319b2d20$@verizon.net> Message-ID: <95152fd1-c94f-feb6-02cb-ad3161c8ad32@gmail.com> I have three suggestions: 1) If you are feeding the antenna at the precise end of the wire, move the feedpoint out a few feet. That's because you need "the other half of the antenna." Because of the high impedance at this point, only a few feet are needed. 2) Don't connect one side of the ladder line to a ground rod. It doesn't help and will probably hurt. If you want to ground something, ground the shield of the coax at the tuner. 3) Use a good 1:1 balun designed for antenna tuner use between the tuner and the ladder line. Yes, people say you should use a 4:1 balun. Don't listen to them. The impedance at the end of the ladder line will be low on 40m (it's transformed by the near 1/4 wave ladder line). If you use the antenna on other bands it will vary all over the map. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 16/01/2019 4:15, John Pierce wrote: > I haven't read all the comments on this thread and thus may requesting > redundant info. My antenna, for 40 mtr's, is a 67' wire up about 25'. I > have 30' of 450 ohm ladder line connected to the end of the antenna and > bringing the antenna into my basement. So I guess you could say that I have > a non-resonant end fed Zepp. > > > > I can check the impedance at the end of the ladder line, where one side is > the antenna and the other side is connected to a ground rod at the point of > entering the house. I can measure the impedance of the antenna in the > basement, using Mini60 without an antenna tuner . The ladder line is then > connected to a MFJ 926B remote antenna tuner The tuner is fed by about 30' > of RG58 coax from my transmitter. When I see a reactive component to the > impedance of the ladder line, without the tuner connected, should I have > some choke inserted in one side of the ladder line or not? Should the tuner > be able to handle the reactive component? > > > > John > > AD2F > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k2vco.vic at gmail.com > From andy.nehan at btinternet.com Wed Jan 16 04:08:56 2019 From: andy.nehan at btinternet.com (ANDY NEHAN) Date: Wed, 16 Jan 2019 09:08:56 +0000 (GMT) Subject: [Elecraft] Setting band edges on the K3 Message-ID: <11810219.3789.1547629736054.JavaMail.defaultUser@defaultHost> I have searched the manual etc. and cant find a way of setting the band edges. By which I mean the frequencies outside of which the transmitter will not function. Here in Europe (as elsewhere I believe) different countries have different band edges - this is particularly so for the 5MHz band. It would be all too easy for me to respond to an FT8 CQ (for example) from a European station and find that I was transmitting outside of the UK 5MHz band. OK so I can fix my transmit frequency but it would be nicer if I could set band limits. Have I missed something - is this facility hidden somewhere?? Andy G4HUE, K3, KPA500, KAT500, P3 owner. From nr4c at widomaker.com Wed Jan 16 05:33:40 2019 From: nr4c at widomaker.com (Nr4c) Date: Wed, 16 Jan 2019 05:33:40 -0500 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: <4ecdeaa3-034a-6f13-6913-d2818373c26f@embarqmail.com> References: <92F9431D-EAB0-42BD-968F-8F38E602B2FE@gmail.com> <0600d94e-e046-7339-a6f1-6f0ee5390636@sdellington.us> <4ecdeaa3-034a-6f13-6913-d2818373c26f@embarqmail.com> Message-ID: Thanks Don. WAARC has been doing just that for about 8 or nine years. Works great. But some folks just want to make it hard. Sent from my iPhone ...nr4c. bill > On Jan 16, 2019, at 12:38 AM, Don Wilhelm wrote: > > Last Field Day, my K3 was used at the CW station. Two sets of headphones. One for the operator and one for the logger. > One was plugged into the rear panel Phones jack and the other was plugged into the front panel jack. No problem, no splitter. > Ok, if there were folks nearby who wanted to listen in, we would simply turn on SPKR+PHONES in the menu, and the speaker could also be heard. > > Very versatile. Why make it complicated - the K3 gives us the tools to do it 'the easy way'. > > 73, > Don W3FPR > >> On 1/15/2019 11:23 PM, K9MA wrote: >> I found that the level at headphone output, at least the rear panel one, was too low to drive two pairs of headphones in parallel in my setup, which includes some isolation transformers. The speaker output works fine with the headphones. (Don't try this with super sensitive low impedance headphones.) I just wired a switch to an external speaker. >> 73, >> Scott K9MA >>> On 1/15/2019 20:51, Nr4c wrote: >>> Why use Line Out for speakers. There is a perfectly good jack marked Speakers right next to the Phones jack. Be sure and use a Stereo plug but it is for ........wait for it. Speakers! > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From k9ma at sdellington.us Wed Jan 16 07:49:37 2019 From: k9ma at sdellington.us (K9MA) Date: Wed, 16 Jan 2019 06:49:37 -0600 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: <4ecdeaa3-034a-6f13-6913-d2818373c26f@embarqmail.com> References: <92F9431D-EAB0-42BD-968F-8F38E602B2FE@gmail.com> <0600d94e-e046-7339-a6f1-6f0ee5390636@sdellington.us> <4ecdeaa3-034a-6f13-6913-d2818373c26f@embarqmail.com> Message-ID: My station has a relay system for switching the headphones between two different radios, among other things. I had to add isolation transformers for the same reason the K3 has them on the line outputs. The loss in the transformers reduces the audio level too much for the rear panel headphone jack to drive two sets of the low sensitivity headphones I use. And I don't want a cable in the way to the front panel. That's why it's "complicated". 73, Scott K9MA "Everything should be as simple as possible, but no simpler." -- Albert Einstein On 1/15/2019 23:38, Don Wilhelm wrote: > Last Field Day, my K3 was used at the CW station.? Two sets of > headphones.? One for the operator and one for the logger. > One was plugged into the rear panel Phones jack and the other was > plugged into the front panel jack.? No problem, no splitter. > Ok, if there were folks nearby who wanted to listen in, we would > simply turn on SPKR+PHONES in the menu, and the speaker could also be > heard. > > Very versatile.? Why make it complicated - the K3 gives us the tools > to do it 'the easy way'. > > 73, > Don W3FPR > > On 1/15/2019 11:23 PM, K9MA wrote: >> I found that the level at headphone output, at least the rear panel >> one, was too low to drive two pairs of headphones in parallel in my >> setup, which includes some isolation transformers. The speaker output >> works fine with the headphones. (Don't try this with super sensitive >> low impedance headphones.) I just wired a switch to an external speaker. >> >> 73, >> Scott K9MA >> >> On 1/15/2019 20:51, Nr4c wrote: >>> Why use Line Out for speakers. There is a perfectly good jack marked >>> Speakers right next to the Phones jack. Be sure and use a Stereo >>> plug but it is for ........wait for it.? Speakers! >> >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9ma at sdellington.us -- Scott K9MA k9ma at sdellington.us From w6png at yahoo.com Wed Jan 16 07:56:55 2019 From: w6png at yahoo.com (Paul Gacek) Date: Wed, 16 Jan 2019 12:56:55 +0000 Subject: [Elecraft] PX3: Use outside in bright sunlight In-Reply-To: <201901152035.x0FKZGUm018746@mail41c28.carrierzone.com> References: <201901152035.x0FKZGUm018746@mail41c28.carrierzone.com> Message-ID: <949790D5-22A5-471B-9387-F46B5C3D7325@yahoo.com> Part way down my blog post you can see a picture of my PX3 outside in Lassen NP during the ARRL 2016 NPOTA event. Amazingly visible!! https://nomadic.blog/2016/05/09/a-noble-journey/ Paul W6PNG/M0SNA > On Jan 15, 2019, at 8:35 PM, Edward R Cole wrote: > > I've wondered how well the PX3 screen displays in bright sunlight. I Use my KX3-2M as IF for my portable 10-GHz station and display of spectrum would be handy for finding mw signals. But this is activity on a high hill or mountain or lake/oceanside location (not in a darkened vehicle or your home). > > Typical LCD laptops screens are unusable in bright light so wonder about the PX3. Not interested in the P3 for my K3, just the PX3. > > 73, Ed - KL7UW > http://www.kl7uw.com > Dubus-NA Business mail: > dubususa at gmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w6png at yahoo.com From oz7bq at yahoo.dk Wed Jan 16 08:08:29 2019 From: oz7bq at yahoo.dk (Hans J Rasmusen) Date: Wed, 16 Jan 2019 14:08:29 +0100 Subject: [Elecraft] KX3 Dual Watch Message-ID: <73065932-1FDC-46A3-BDFC-85B2EDBA3563@yahoo.dk> Good morning, The KX3 has a nice Dual Watch feature. It is however, of limited use when the DX is weak and the callers are strong (a common case here). To overcome this problem I have build a simple two channels audio amplifier with 2 LM380N (Manhattan style) with independent volumn controls. I can Independently boost the VFO A signal in one channel and reduce the VFO B in the other Channel. But some VFO A signal seems to leak into the VFO B channel and visa versa. I can not observe any signal leakage when using an audio generator as test input. Has anyone observed something similar? Does the KX3 Dual Watch feature only offer a limited channel separation or have I wired my amplifier wrongly? Thank you in advance. 73 OZ7BQ Hans J?rgen Sendt fra min iPhone From cx6vm.jorge at gmail.com Wed Jan 16 09:57:12 2019 From: cx6vm.jorge at gmail.com (Jorge Diez - CX6VM) Date: Wed, 16 Jan 2019 11:57:12 -0300 Subject: [Elecraft] PWR12V1A-US voltage Message-ID: hello what about this power supply for K3/0 Mini? is international voltage 110-240? thanks!! -- 73, Jorge CX6VM/CW5W Libre de virus. www.avast.com <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> From rmcgraw at blomand.net Wed Jan 16 10:02:55 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Wed, 16 Jan 2019 09:02:55 -0600 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: <4ecdeaa3-034a-6f13-6913-d2818373c26f@embarqmail.com> References: <92F9431D-EAB0-42BD-968F-8F38E602B2FE@gmail.com> <0600d94e-e046-7339-a6f1-6f0ee5390636@sdellington.us> <4ecdeaa3-034a-6f13-6913-d2818373c26f@embarqmail.com> Message-ID: <35ba60d5-4c91-9025-ebcd-bac160abee1c@blomand.net> I see no need for isolation transformers with headphones.? Likely the transformers is the reason the HP output won't drive a pair of headphones.?? Isolation transformers?? Are they 3 winding hybrid transformers???? I've used them in professional audio installations but they are rare and expensive. 73 Bob, K4TAX > > On 1/15/2019 11:23 PM, K9MA wrote: >> I found that the level at headphone output, at least the rear panel >> one, was too low to drive two pairs of headphones in parallel in my >> setup, which includes some isolation transformers. The speaker output >> works fine with the headphones. (Don't try this with super sensitive >> low impedance headphones.) I just wired a switch to an external speaker. >> >> 73, >> Scott K9MA >> >> On 1/15/2019 20:51, Nr4c wrote: >>> Why use Line Out for speakers. There is a perfectly good jack marked >>> Speakers right next to the Phones jack. Be sure and use a Stereo >>> plug but it is for ........wait for it.? Speakers! >> >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From k9ma at sdellington.us Wed Jan 16 10:15:15 2019 From: k9ma at sdellington.us (K9MA) Date: Wed, 16 Jan 2019 09:15:15 -0600 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: <35ba60d5-4c91-9025-ebcd-bac160abee1c@blomand.net> References: <92F9431D-EAB0-42BD-968F-8F38E602B2FE@gmail.com> <0600d94e-e046-7339-a6f1-6f0ee5390636@sdellington.us> <4ecdeaa3-034a-6f13-6913-d2818373c26f@embarqmail.com> <35ba60d5-4c91-9025-ebcd-bac160abee1c@blomand.net> Message-ID: The headphone outputs from my radios are switched with some relays. The switching system has a common ground, which creates a ground loop, resulting in 60 Hz hum in the headphones. (Call it common impedance coupling, if you prefer.) I should have isolated the headphone grounds, but a path of less resistance was to insert the isolation transformers. They are just common 600 Ohm transformers, like the ones in the K3 line outputs, but they're a bit lossy driving headphones. 73, Scott K9MA On 1/16/2019 09:02, Bob McGraw K4TAX wrote: > I see no need for isolation transformers with headphones.? Likely the > transformers is the reason the HP output won't drive a pair of > headphones.?? Isolation transformers?? Are they 3 winding hybrid > transformers???? I've used them in professional audio installations > but they are rare and expensive. > > 73 > > Bob, K4TAX > > >> >> On 1/15/2019 11:23 PM, K9MA wrote: >>> I found that the level at headphone output, at least the rear panel >>> one, was too low to drive two pairs of headphones in parallel in my >>> setup, which includes some isolation transformers. The speaker >>> output works fine with the headphones. (Don't try this with super >>> sensitive low impedance headphones.) I just wired a switch to an >>> external speaker. >>> >>> 73, >>> Scott K9MA >>> >>> On 1/15/2019 20:51, Nr4c wrote: >>>> Why use Line Out for speakers. There is a perfectly good jack >>>> marked Speakers right next to the Phones jack. Be sure and use a >>>> Stereo plug but it is for ........wait for it.? Speakers! >>> >>> -- Scott K9MA k9ma at sdellington.us From donwilh at embarqmail.com Wed Jan 16 10:36:35 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 16 Jan 2019 10:36:35 -0500 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: References: Message-ID: <81d6d14a-9d58-228b-4e91-a3ed957bae91@embarqmail.com> The K3/K3S Line Out already has isolation transformers internal to the K3. I do not understand any need to put additional transformers in the audio path(s). What happens if you cable to LINE OUT signals to a computer soundcard (with both left and right channels - some only are one channel if the input is set for MIC)? You should hear the main RX in the left channel and the SubRX in the right. Your external transformers/cabling raises the question of "is it the K3S or is it your external devices that are causing the problem". Time to strip everything down to the essentials and begin to determine where the "failure" is occurring. Test one thing at a time. 73, Don W3FPR On 1/15/2019 8:00 PM, Dave Sublette wrote: > My K3s arrived over the weekend and I have been setting it up. I am using > the rear Audio jacks to drive either headphones, or the Line out to drive > an amplifier and two speakers in the stereo mode. > > The headphone jack has stereo output ok. But the line out only has right > channel audio. Left channel has nothing but a low hum. > > I am testing them one at a time, using the same cable. So it is not a case > of a bad cable. The plug inserts to the same depth in both the headphone > and line out jacks, so I believe the plug is properly inserted, > > I have been through both the Main Menu and Config menus, item by item. I > see nothing that would give the option to turn off the left channel of the > line out. > From forums at david-woolley.me.uk Wed Jan 16 10:37:01 2019 From: forums at david-woolley.me.uk (David Woolley) Date: Wed, 16 Jan 2019 15:37:01 +0000 Subject: [Elecraft] Setting band edges on the K3 In-Reply-To: <11810219.3789.1547629736054.JavaMail.defaultUser@defaultHost> References: <11810219.3789.1547629736054.JavaMail.defaultUser@defaultHost> Message-ID: <594812c7-9129-de8c-4393-6ed6a16f5e21@david-woolley.me.uk> The UK 5MHz allocation is not a single continuous allocation. It is more like number of spot frequencies with allowances for different bandwidths. Applying frequency fencing would need consideration of modes and filters as well as frequency. In general, I believe that Elecraft set frequency limits based on the destination country, although I don't think they can cope with essentially spot allocations. I believe there are ways of changing the allocations in the field, but they are not in the public domain and users have to demonstrate authorisation for the frequency. -- David Woolley Owner K2 06123 On 16/01/2019 09:08, ANDY NEHAN wrote: > I have searched the manual etc. and cant find a way of setting the band edges. By which I mean the frequencies outside of which the transmitter will not function. Here in Europe (as elsewhere I believe) different countries have different band edges - this is particularly so for the 5MHz band. It would be all too easy for me to respond to an FT8 CQ (for example) from a European station and find that I was transmitting outside of the UK 5MHz band. OK so I can fix my transmit frequency but it would be nicer if I could set band limits. > Have I missed something - is this facility hidden somewhere?? > Andy G4HUE, K3, KPA500, KAT500, P3 owner. > From wunder at wunderwood.org Wed Jan 16 11:00:35 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Wed, 16 Jan 2019 08:00:35 -0800 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: <81d6d14a-9d58-228b-4e91-a3ed957bae91@embarqmail.com> References: <81d6d14a-9d58-228b-4e91-a3ed957bae91@embarqmail.com> Message-ID: When I need to drive two sets of headphones, I use a $25 Behringer HA400 headphone distribution amp. https://www.amazon.com/Behringer-HA400-Ultra-Compact-4-Channel-Headphone/dp/B000KIPT30 wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 16, 2019, at 7:36 AM, Don Wilhelm wrote: > > The K3/K3S Line Out already has isolation transformers internal to the K3. I do not understand any need to put additional transformers in the audio path(s). > > What happens if you cable to LINE OUT signals to a computer soundcard (with both left and right channels - some only are one channel if the input is set for MIC)? You should hear the main RX in the left channel and the SubRX in the right. > > Your external transformers/cabling raises the question of "is it the K3S or is it your external devices that are causing the problem". > > Time to strip everything down to the essentials and begin to determine where the "failure" is occurring. Test one thing at a time. > > 73, > Don W3FPR > > On 1/15/2019 8:00 PM, Dave Sublette wrote: >> My K3s arrived over the weekend and I have been setting it up. I am using >> the rear Audio jacks to drive either headphones, or the Line out to drive >> an amplifier and two speakers in the stereo mode. >> The headphone jack has stereo output ok. But the line out only has right >> channel audio. Left channel has nothing but a low hum. >> I am testing them one at a time, using the same cable. So it is not a case >> of a bad cable. The plug inserts to the same depth in both the headphone >> and line out jacks, so I believe the plug is properly inserted, >> I have been through both the Main Menu and Config menus, item by item. I >> see nothing that would give the option to turn off the left channel of the >> line out. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From donwilh at embarqmail.com Wed Jan 16 11:09:21 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 16 Jan 2019 11:09:21 -0500 Subject: [Elecraft] Setting band edges on the K3 In-Reply-To: <594812c7-9129-de8c-4393-6ed6a16f5e21@david-woolley.me.uk> References: <11810219.3789.1547629736054.JavaMail.defaultUser@defaultHost> <594812c7-9129-de8c-4393-6ed6a16f5e21@david-woolley.me.uk> Message-ID: David, As I recall, per country band limits must be set at Watsonville, CA or an authorized repair facility. That is done do comply with various country band limits for amateur radio transceivers - most notably Japan and some other Asian markets. Contact support at elecraft.com for a definitive answer. 73, Don W3FPR On 1/16/2019 10:37 AM, David Woolley wrote: > The UK 5MHz allocation is not a single continuous allocation.? It is > more like number of spot frequencies with allowances for different > bandwidths.? Applying frequency fencing would need consideration of > modes and filters as well as frequency. > > In general, I believe that Elecraft set frequency limits based on the > destination country, although I don't think they can cope with > essentially spot allocations. > > I believe there are ways of changing the allocations in the field, but > they are not in the public domain and users have to demonstrate > authorisation for the frequency. > From k9ma at sdellington.us Wed Jan 16 11:14:36 2019 From: k9ma at sdellington.us (K9MA) Date: Wed, 16 Jan 2019 10:14:36 -0600 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: References: <81d6d14a-9d58-228b-4e91-a3ed957bae91@embarqmail.com> Message-ID: <09f864f7-b0cc-9335-c5a0-694a41e5ccc3@sdellington.us> On 1/16/2019 10:00, Walter Underwood wrote: > When I need to drive two sets of headphones, I use a $25 Behringer HA400 headphone distribution amp. > > https://www.amazon.com/Behringer-HA400-Ultra-Compact-4-Channel-Headphone/dp/B000KIPT30 Any trouble with RFI? 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us From donwilh at embarqmail.com Wed Jan 16 11:24:34 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 16 Jan 2019 11:24:34 -0500 Subject: [Elecraft] Driving KPAA500 from KX3 In-Reply-To: <00ee01d4ad3c$f3433ce0$d9c9b6a0$@verizon.net> References: <00ee01d4ad3c$f3433ce0$d9c9b6a0$@verizon.net> Message-ID: <1ba7dbd6-d058-b3af-85f7-77551e051ef7@embarqmail.com> John, If the voltage displayed on the KPA500 is within range, nothing has to be done. See page 9 of the KPA500 manual for instructions on checking the voltage. If the voltage is not in range, change the transformer tap. See page 8 of the manual. 73, Don W3FPR On 1/15/2019 8:43 PM, John Pierce wrote: > Just got 220v to my shack. I put the 220V fuses into the KPA500 and > connected the amp to 220v using the ELecraft power cable. I was expecting > to do something to the transformer wiring in the KPA500, but did not see any > instruction to do so. Is that all there is to powering the KPA500 from > 220vac? From wunder at wunderwood.org Wed Jan 16 11:28:15 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Wed, 16 Jan 2019 08:28:15 -0800 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: <09f864f7-b0cc-9335-c5a0-694a41e5ccc3@sdellington.us> References: <81d6d14a-9d58-228b-4e91-a3ed957bae91@embarqmail.com> <09f864f7-b0cc-9335-c5a0-694a41e5ccc3@sdellington.us> Message-ID: <1360D231-3873-44AE-88C3-64792D7B21EA@wunderwood.org> Haven?t noticed any. It is a simple device, a quad op-amp and four pots in a little metal box. It runs off 12 V, so it can plug into the shack supply. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 16, 2019, at 8:14 AM, K9MA wrote: > > On 1/16/2019 10:00, Walter Underwood wrote: >> When I need to drive two sets of headphones, I use a $25 Behringer HA400 headphone distribution amp. >> >> https://www.amazon.com/Behringer-HA400-Ultra-Compact-4-Channel-Headphone/dp/B000KIPT30 > > Any trouble with RFI? > > 73, > > Scott K9MA > > -- > Scott K9MA > > k9ma at sdellington.us > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From rmcgraw at blomand.net Wed Jan 16 11:33:35 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Wed, 16 Jan 2019 10:33:35 -0600 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: References: <81d6d14a-9d58-228b-4e91-a3ed957bae91@embarqmail.com> Message-ID: <152889ca-e048-eea2-5220-709b23c26c93@blomand.net> I agree but in the case of using two radios, two pair of headphones, a switching system and getting hum indicates a serious deficiency in the station interconnection and ground scheme. Everything should be at the same potential, thus no current would flow.?? As they say "sum-tin not right". 73 Bob, K4TAX On 1/16/2019 10:00 AM, Walter Underwood wrote: > When I need to drive two sets of headphones, I use a $25 Behringer HA400 headphone distribution amp. > > https://www.amazon.com/Behringer-HA400-Ultra-Compact-4-Channel-Headphone/dp/B000KIPT30 > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > From wa8jxm at gmail.com Wed Jan 16 11:37:43 2019 From: wa8jxm at gmail.com (Ken) Date: Wed, 16 Jan 2019 11:37:43 -0500 Subject: [Elecraft] Non-Resonant Antennas and Chokes In-Reply-To: <32691c7a-c74e-fec9-d60b-0e9cb220a059@triconet.org> References: <010c01d4ad41$65de6460$319b2d20$@verizon.net> <32691c7a-c74e-fec9-d60b-0e9cb220a059@triconet.org> Message-ID: <7d79e787-3242-ceb5-d5b3-dd7264a05cbc@gmail.com> On 1/16/19 12:11 AM, Wes Stewart wrote: > Why don't you cut the dipole in the center, add an insulator and feed > it with coax?? Put a CM choke at the feedpoint if you insist and lose > the ladderline and tuner. _Prune the wire length for resonance. _ You do realize that "pruning" for resonance will rarely give a flat SWR and pruning for low SWR does not mean the antenna is resonant? Of course, if you cut an end fed Zepp and feed it in the center with coax, it becomes a single band dipole instead of a multi band antenna. Ken WA8JXM From richarddw1945 at yahoo.com Wed Jan 16 11:47:16 2019 From: richarddw1945 at yahoo.com (RIchard Williams) Date: Wed, 16 Jan 2019 16:47:16 +0000 (UTC) Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: <09f864f7-b0cc-9335-c5a0-694a41e5ccc3@sdellington.us> References: <81d6d14a-9d58-228b-4e91-a3ed957bae91@embarqmail.com> <09f864f7-b0cc-9335-c5a0-694a41e5ccc3@sdellington.us> Message-ID: <458118493.474803.1547657236051@mail.yahoo.com> Like Walter, I use the Behringer HA-400 with my K3 on Field Day.? You can have up to four individuals on headphones (no earthly idea why you would have four), and each can control the volume to their headsets.? If you have visitors and want to use the speaker too, that can be done in the menu setting to have both speaker and headphones on. Never had a problem with RFI, but we are only running the K3 barefoot.? ? Dick, K8ZTT On Wednesday, January 16, 2019, 9:14:54 AM MST, K9MA wrote: On 1/16/2019 10:00, Walter Underwood wrote: > When I need to drive two sets of headphones, I use a $25 Behringer HA400 headphone distribution amp. > > https://www.amazon.com/Behringer-HA400-Ultra-Compact-4-Channel-Headphone/dp/B000KIPT30 Any trouble with RFI? 73, Scott K9MA -- Scott? K9MA k9ma at sdellington.us ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to richarddw1945 at yahoo.com From k9ma at sdellington.us Wed Jan 16 11:02:26 2019 From: k9ma at sdellington.us (K9MA) Date: Wed, 16 Jan 2019 10:02:26 -0600 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: <81d6d14a-9d58-228b-4e91-a3ed957bae91@embarqmail.com> References: <81d6d14a-9d58-228b-4e91-a3ed957bae91@embarqmail.com> Message-ID: <0aab966d-914f-a4f6-b0d7-a31af51799d5@sdellington.us> There's no mystery at all. The headphone outputs of two radios go to a switching system with a common ground. There inevitably is a small AC voltage difference between the chassis of the two radios, and from the radios to the rest of the system ground, which results in some current flowing in the headphone cable ground wires. Bonding everything together with braid might have helped, but it might have been hard to get the impedance low enough. The common ground was an oversight on my part, but avoiding it would have required third relay pole and isolated headphone jacks. Rather than rebuild the switching system, I inserted the transformers. They serve exactly the same purpose as the K3 internal ones in the line outputs. I'm not sure how other SO2R systems deal with the problem, but it has to be either isolation transformers of switched headphone grounds. Or, as does one of my friends, completely isolated left and right headphones. 73, Scott K9MA On 1/16/2019 09:36, Don Wilhelm wrote: > The K3/K3S Line Out already has isolation transformers internal to the > K3.? I do not understand any need to put additional transformers in > the audio path(s). > > What happens if you cable to LINE OUT signals to a computer soundcard > (with both left and right channels - some only are one channel if the > input is set for MIC)?? You should hear the main RX in the left > channel and the SubRX in the right. > > Your external transformers/cabling raises the question of "is it the > K3S or is it your external devices that are causing the problem". > > Time to strip everything down to the essentials and begin to determine > where the "failure" is occurring.? Test one thing at a time. > > 73, > Don W3FPR > > On 1/15/2019 8:00 PM, Dave Sublette wrote: >> My K3s arrived over the weekend and I have been setting it up. I am >> using >> the rear Audio jacks to drive either headphones, or the Line out to >> drive >> an amplifier and two speakers in the stereo mode. >> >> The headphone jack has stereo output ok.? But the line out only has >> right >> channel audio.? Left channel has nothing but a low hum. >> >> I am testing them one at a time, using the same cable. So it is not a >> case >> of a bad cable.? The plug inserts to the same depth in both the >> headphone >> and line out jacks, so I believe the plug is properly inserted, >> >> I have been through both the Main Menu and Config menus, item by >> item.? I >> see nothing that would give the option to turn off the left channel >> of the >> line out. >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9ma at sdellington.us -- Scott K9MA k9ma at sdellington.us From af4pm at searlsnet.com Wed Jan 16 13:06:26 2019 From: af4pm at searlsnet.com (Corky) Date: Wed, 16 Jan 2019 13:06:26 -0500 Subject: [Elecraft] KX2 Filter Bandwidth issue Message-ID: <1d2dd7ef-e066-4ed0-a312-310d98d39f0d@www.fastmail.com> I have been using my KX2 for digital (Fldigi and SignaLink) and am seeing a very strange behavior when I attempt to adjust the signal bandwidth. As long as the bandwidth is above 2.0 everything works fine. When I reduce it to cut out nearby signals the signal on the fldigi waterfall has s gap in the middle and two bands, one above and the other below where I am listening. This cleverly filters out the exact signal I am trying to monitor and leaves the signals above and below my 1500 Hz operating point still coming through. I have not found any way to fix this, and the same settings on either the KX3 or the K2 produce the expected results of a single narrowed band around my monitoring point. Anyone else experienced this or have any suggestions as to how to get the desired/expected results when adjusting the receive bandwidth? Thanks and 73, -Corky, AF4PM From brian.waterworth at gmail.com Wed Jan 16 13:32:36 2019 From: brian.waterworth at gmail.com (Brian Waterworth) Date: Wed, 16 Jan 2019 10:32:36 -0800 Subject: [Elecraft] KX2 Filter Bandwidth issue In-Reply-To: <1d2dd7ef-e066-4ed0-a312-310d98d39f0d@www.fastmail.com> References: <1d2dd7ef-e066-4ed0-a312-310d98d39f0d@www.fastmail.com> Message-ID: First thing that comes to mind, is the notch filter on? Regards Brian VE3IBW On Wed, Jan 16, 2019 at 10:08 AM Corky wrote: > I have been using my KX2 for digital (Fldigi and SignaLink) and am seeing > a very strange behavior when I attempt to adjust the signal bandwidth. As > long as the bandwidth is above 2.0 everything works fine. When I reduce it > to cut out nearby signals the signal on the fldigi waterfall has s gap in > the middle and two bands, one above and the other below where I am > listening. This cleverly filters out the exact signal I am trying to > monitor and leaves the signals above and below my 1500 Hz operating point > still coming through. I have not found any way to fix this, and the same > settings on either the KX3 or the K2 produce the expected results of a > single narrowed band around my monitoring point. > > Anyone else experienced this or have any suggestions as to how to get the > desired/expected results when adjusting the receive bandwidth? > > Thanks and 73, > -Corky, AF4PM > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to brian.waterworth at gmail.com > From k4to.dave at gmail.com Wed Jan 16 13:40:34 2019 From: k4to.dave at gmail.com (Dave Sublette) Date: Wed, 16 Jan 2019 13:40:34 -0500 Subject: [Elecraft] Control of K3s from computer Message-ID: I had the K3s operating correctly controlling it with an RS232 cable from the computer. When I try to replace that with a USB cable, the radio isn't found. The computer says the port is operating correctly. I'm stumped. The software's the N1MM. I've made an inquiry there. Perhaps there is a menu item that needs attention? I have been through it all, but don't recall that there is. Any suggestions? Dave, K4TO ps -- The P3/SVGA is running an external monitor just fine and the control path evidently goes through the P3. I have the proper cable connected. From jim at audiosystemsgroup.com Wed Jan 16 13:44:47 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Wed, 16 Jan 2019 10:44:47 -0800 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: References: <92F9431D-EAB0-42BD-968F-8F38E602B2FE@gmail.com> <0600d94e-e046-7339-a6f1-6f0ee5390636@sdellington.us> <4ecdeaa3-034a-6f13-6913-d2818373c26f@embarqmail.com> Message-ID: On 1/16/2019 4:49 AM, K9MA wrote: > I had to add isolation transformers for the same reason the K3 has > them on the line outputs. If you had to add isolation transformers, your station is not properly bonded. There is NO good reason for needing transformers if all the equipment in a station is properly bonded. http://k9yc.com/GroundingAndAudio.pdf 73, Jim K9YC From kk7p4dsp at gmail.com Wed Jan 16 13:52:50 2019 From: kk7p4dsp at gmail.com (Lyle Johnson) Date: Wed, 16 Jan 2019 11:52:50 -0700 Subject: [Elecraft] KX2 Filter Bandwidth issue In-Reply-To: <1d2dd7ef-e066-4ed0-a312-310d98d39f0d@www.fastmail.com> References: <1d2dd7ef-e066-4ed0-a312-310d98d39f0d@www.fastmail.com> Message-ID: Is the mode DATA A or USB/LSB?? Is USB/LSB (voice SSB) this is normal behavior as the radio switches to "3rd method" demodulation.? DATA A should not have this behavior. 73, Lyle KK7P On 1/16/19 11:06 AM, Corky wrote: > I have been using my KX2 for digital (Fldigi and SignaLink) and am seeing a very strange behavior when I attempt to adjust the signal bandwidth. As long as the bandwidth is above 2.0 everything works fine. When I reduce it to cut out nearby signals the signal on the fldigi waterfall has s gap in the middle and two bands, one above and the other below where I am listening. From k4to.dave at gmail.com Wed Jan 16 13:59:08 2019 From: k4to.dave at gmail.com (Dave Sublette) Date: Wed, 16 Jan 2019 13:59:08 -0500 Subject: [Elecraft] com port setup Message-ID: Got it. Thanks to K4TAX who told me that, yes, indeed there was a menu item.... red face... 73, Dave, k4TO From n7us at arrl.net Wed Jan 16 14:06:48 2019 From: n7us at arrl.net (Jim N7US) Date: Wed, 16 Jan 2019 13:06:48 -0600 Subject: [Elecraft] KPA fans in digital modes In-Reply-To: References: <775849854.1435871.1543919996793.ref@mail.yahoo.com> <775849854.1435871.1543919996793@mail.yahoo.com> Message-ID: <05ad01d4adce$a2963c10$e7c2b430$@arrl.net> The KPA1500's Ethernet port is required to use Larry's program. I use WiFi to connect my shack computer to the internet and LAN and USB between the computer and KPA1500. Has anyone connected their KPA1500 to a WiFi-connected computer using Ethernet between the amplifier and the computer? Jim N7US -----Original Message----- Eric, If you'll pardon a little self-promotion, you might consider using FANticipator to control the fans in your KAP1500. It's free, runs local or remote, and will perform those speed-changing tasks automatically for you... including shutting the fans off completely when the amp returns to ambient temperatures. http://hamprojects.info/fanticipator-kpa1500-console-and-fan-controller/ -larry (K8UT) ------ Original Message ------ From: "eric norris via Elecraft" To: "elecraft at mailman.qth.net" Sent: 2018-12-04 05:39:56 Subject: [Elecraft] KPA fans in digital modes >I, too, use FAN2 for both the KPA500 and KPA1500 in digital modes. >Both amps run considerably cooler and with less thermal variation. >It would be great if the PF1 or PF2 keys on the KPA1500 could be used >to toggle into a preset FAN2 (or choose your poison) when pounding away >on digital modes like MSK144 for meteor scatter on 6m. I don't know if >it would be possible to do something similar for one of the keys on the >KPA500--perhaps the AUX band switch? For both amps I switch back to >FAN NOR for casual CW use. >For all of you out there with even a 3el beam and 100w on 6m, please >try meteor scatter using MSK144--you can make contacts every day out to >1500km or more, even without a clear horizon. Schedules optional at >the Ping Jockey website. It's a blast! >73 Eric WD6DBM > From nr4c at widomaker.com Wed Jan 16 14:42:58 2019 From: nr4c at widomaker.com (Nr4c) Date: Wed, 16 Jan 2019 14:42:58 -0500 Subject: [Elecraft] Control of K3s from computer In-Reply-To: References: Message-ID: <56649B13-9F35-4855-9F0A-7FD193CA51BC@widomaker.com> RS-232 set to USB. Sent from my iPhone ...nr4c. bill > On Jan 16, 2019, at 1:40 PM, Dave Sublette wrote: > > I had the K3s operating correctly controlling it with an RS232 cable from > the computer. When I try to replace that with a USB cable, the radio isn't > found. The computer says the port is operating correctly. I'm stumped. > > The software's the N1MM. I've made an inquiry there. > > Perhaps there is a menu item that needs attention? I have been through it > all, but don't recall that there is. > > Any suggestions? > > Dave, K4TO > > ps -- The P3/SVGA is running an external monitor just fine and the control > path evidently goes through the P3. I have the proper cable connected. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From k9ztv at socket.net Wed Jan 16 15:09:39 2019 From: k9ztv at socket.net (KENT TRIMBLE) Date: Wed, 16 Jan 2019 14:09:39 -0600 Subject: [Elecraft] K3s Line Out (stereo) In-Reply-To: <458118493.474803.1547657236051@mail.yahoo.com> References: <81d6d14a-9d58-228b-4e91-a3ed957bae91@embarqmail.com> <09f864f7-b0cc-9335-c5a0-694a41e5ccc3@sdellington.us> <458118493.474803.1547657236051@mail.yahoo.com> Message-ID: <785ec7d6-9411-f491-f14e-3d084b85b714@socket.net> Hi Dick . . . Good to see you on the reflector again. One "earthly reason" for having four people wear headphones during FD is when you are wanting to train new operators.? By monitoring both sides of the contact they can better grasp what's going on and practice copying the exchanges (especially so for CW students). We have used both the Behringer AMP800 (http://www.musictribe.com/Categories/Behringer/Signal-Processors/Headphone-Amplifiers/AMP800/p/P0331) and the Rolls HA-43 (http://www.rolls.com/product.php?pid=HA43), and both amps work fine at 100 watts with no RFI. They have also been useful for summertime QRP sprints (e.g., Bumble Bee and Skeeter Hunt) where signals, weak to begin with, are further drowned out by outdoor noises.? Some QRP rigs don't have speakers and those that do are often not usable outdoors. 73, Kent? K9ZTV On 1/16/2019 10:47 AM, RIchard Williams via Elecraft wrote: > Like Walter, I use the Behringer HA-400 with my K3 on Field Day.? You can have up to four individuals on headphones (no earthly idea why you would have four) ... --- This email has been checked for viruses by AVG. https://www.avg.com From jamesdahl at sbcglobal.net Wed Jan 16 16:34:42 2019 From: jamesdahl at sbcglobal.net (James Dahl) Date: Wed, 16 Jan 2019 13:34:42 -0800 Subject: [Elecraft] Do the KPA/KAT500 PowerCombo Application Notes regarding Yaesu radios describe how a 10-pin DIN/15-pin serial cable should be wired to implement Enhanced Mode coordinated band switching from the radio without the need to transmit (as opposed to Basic Mode automatic band switching when RF is applied)? Message-ID: <72804FA6-7D48-4760-B317-44313205767D@sbcglobal.net> Do the KPA/KAT500 PowerCombo Application Notes regarding Yaesu radios describe how a 10-pin DIN/15-pin serial cable should be wired to implement Enhanced Mode coordinated band switching from the radio without the need to transmit (as opposed to Basic Mode automatic band switching when RF is applied)? https://elecraft.com/pages/mods-notes-alerts https://elecraft.com/products/e770060_cbl-yaesukey-yaesu-cable-for-the-kpa500-amp-and-kpa1500-amp https://www.yaesu.com/downloadFile.cfm?FileID=6434&FileCatID=158&FileName=FT-450D_OM_USA_EXP_EU_EH024H250.pdf&FileContentType=application/pdf https://elecraft.com/pages/mods-notes-alerts https://elecraft.com/products/e770060_cbl-yaesukey-yaesu-cable-for-the-kpa500-amp-and-kpa1500-amp https://www.yaesu.com/downloadFile.cfm?FileID=6434&FileCatID=158&FileName=FT-450D_OM_USA_EXP_EU_EH024H250.pdf&FileContentType=application/pdf From jamesdahl at sbcglobal.net Wed Jan 16 16:34:46 2019 From: jamesdahl at sbcglobal.net (James Dahl) Date: Wed, 16 Jan 2019 13:34:46 -0800 Subject: [Elecraft] =?utf-8?q?Why_do_the_KPA/KAT500_PowerCombo_Application?= =?utf-8?q?_Notes_regarding_Yaesu_radios_reference_the_radio=E2=80=99s_LIN?= =?utf-8?q?EAR_10-pin_DIN_jack_when_the_Elecraft_CBL-YAESUKEY_Keying_Cable?= =?utf-8?q?_is_an_8-pin_DIN_designed_for_the_radio=27s_TUNER_jack=3F?= Message-ID: <3A022005-1F9B-4124-B8C1-82400D43F0E3@sbcglobal.net> Why do the KPA/KAT500 PowerCombo Application Notes regarding Yaesu radios reference the radio?s LINEAR 10-pin DIN jack when the Elecraft CBL-YAESUKEY Keying Cable is an 8-pin DIN designed for the radio's TUNER jack? https://elecraft.com/pages/mods-notes-alerts https://elecraft.com/products/e770060_cbl-yaesukey-yaesu-cable-for-the-kpa500-amp-and-kpa1500-amp https://www.yaesu.com/downloadFile.cfm?FileID=6434&FileCatID=158&FileName=FT-450D_OM_USA_EXP_EU_EH024H250.pdf&FileContentType=application/pdf From af4pm at searlsnet.com Wed Jan 16 18:07:08 2019 From: af4pm at searlsnet.com (Corky) Date: Wed, 16 Jan 2019 18:07:08 -0500 Subject: [Elecraft] KX2 Filter Bandwidth issue - Resolved In-Reply-To: <00f181a5-43f9-80ca-3a6e-cce4673742ac@comcast.net> References: <1d2dd7ef-e066-4ed0-a312-310d98d39f0d@www.fastmail.com> <00f181a5-43f9-80ca-3a6e-cce4673742ac@comcast.net> Message-ID: <33e90d0e-422b-447e-9f23-1770bb074a3e@www.fastmail.com> I reviewed everything (displays and filter settings) and everything looked to be fine, but it was still behaving strangely. As a last attempt, with system set to Data A (as it was previously) I engaged the filter adjust mode and then use the dial to set "norm" for the mode. All of a sudden it worked as expected! So I am not sure what was funky - perhaps vestiges of a previous RTTY setup or something, but now is working fine. Thanks and 73, -Corky, AF4PM On Wed, Jan 16, 2019, at 10:33 AM, Carl wrote: > Corky, > > It sounds like you are in APF-AN mode, like in holding the FIL button > too long. I can adjust the width and move the bandpass around OK. Other > than that, maybe the software is doing something. I don't have FLDigi. > Is the display correct, like on page 12 or like on page 18? Are you in > Data A mode? > > Good luck, hope this helped you. > > -- > Carl > AB1DD > Resistance is futile. > (don't know about reactance, though) > > From k9ma at sdellington.us Wed Jan 16 18:31:40 2019 From: k9ma at sdellington.us (K9MA) Date: Wed, 16 Jan 2019 17:31:40 -0600 Subject: [Elecraft] KX2 Bandwidth Issue Message-ID: <27fcbe43-6421-3697-310a-a021161dec0e@sdellington.us> The KX2 (and maybe KX3) has long had an issue that when the filter bandwidth is set to x00 Hz, some artifacts appear. Over a year ago, a "temporary" fix was introduced, automatically adding 50 Hz to the x00, so it can only be set to 350, 450, etc. I know it's a minor thing, but I'm rather attached to using 400 Hz. Has anyone heard anything about a fix? 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us From n4cw at aol.com Wed Jan 16 19:51:33 2019 From: n4cw at aol.com (n4cw at aol.com) Date: Thu, 17 Jan 2019 00:51:33 +0000 (UTC) Subject: [Elecraft] Battery Low K3 References: <164646026.883724.1547686293743.ref@mail.yahoo.com> Message-ID: <164646026.883724.1547686293743@mail.yahoo.com> Just a suggestion for a battery source: Harbor Freight. I've been using CR2032's on my dog's illuminated collar (uses two batteries at a time), and they've been outlasting the "name brands" that I'd buy at Home Depot.If you're shy about using batteries made out of the country, just check the origins of the ones you buy a a local store! The wrapping's from one place (it says "distributed by") and the battery from somewhere else.Plus, for a pack of four, I paid less than I would for a pack of two of the "name brand"! After replacing one in the K3, I now have three more to use on the dog collar! Can't beat that with a stick...even better, don't forget to use a coupon if you have one...73, Bert N4CW From rmcgraw at blomand.net Wed Jan 16 20:14:18 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Wed, 16 Jan 2019 19:14:18 -0600 Subject: [Elecraft] Battery Low K3 In-Reply-To: <164646026.883724.1547686293743@mail.yahoo.com> References: <164646026.883724.1547686293743.ref@mail.yahoo.com> <164646026.883724.1547686293743@mail.yahoo.com> Message-ID: <7e58502a-3220-da06-824f-b62504cc82df@blomand.net> Perhaps someone will come up with? petite or very tiny jumper cables.? That might solve the Low Battery issue. ? Maybe a "jumper cable kit". ? ? :-) 73 Bob, K4TAX From rmcgraw at blomand.net Wed Jan 16 20:25:33 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Wed, 16 Jan 2019 19:25:33 -0600 Subject: [Elecraft] KX2 Filter Bandwidth issue - Resolved In-Reply-To: <33e90d0e-422b-447e-9f23-1770bb074a3e@www.fastmail.com> References: <1d2dd7ef-e066-4ed0-a312-310d98d39f0d@www.fastmail.com> <00f181a5-43f9-80ca-3a6e-cce4673742ac@comcast.net> <33e90d0e-422b-447e-9f23-1770bb074a3e@www.fastmail.com> Message-ID: <1116c993-2490-6a94-f00b-70595e57ddb8@blomand.net> I have experienced issues where a computer and the application software left fragments of data in the radio.? Not specific to the KX2 but could be.?? From your description it seems the radio was in FSK mode.? That performs as you described which is a function of APF. I have found in most cases it is best to close the software application before turning off the radio.? Then turn off the radio and then shut down the power supply, then shut down the computer. Power up in the reverse sequence; computer completely booted, power supply on, turn on the radio, then load / open the application software. One other issue which has been shown to leave corrupt data in the radio is when the power supply is shut down before the radio is turned off.?? The radio has no chance to save any recent data or configuration.? Always turn off the radio first and then the power supply. 73 Bob, K4TAX On 1/16/2019 5:07 PM, Corky wrote: > I reviewed everything (displays and filter settings) and everything looked to be fine, but it was still behaving strangely. As a last attempt, with system set to Data A (as it was previously) I engaged the filter adjust mode and then use the dial to set "norm" for the mode. All of a sudden it worked as expected! So I am not sure what was funky - perhaps vestiges of a previous RTTY setup or something, but now is working fine. > > Thanks and 73, > -Corky, AF4PM > From jim at audiosystemsgroup.com Wed Jan 16 20:33:04 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Wed, 16 Jan 2019 17:33:04 -0800 Subject: [Elecraft] Do the KPA/KAT500 PowerCombo Application Notes regarding Yaesu radios describe how a 10-pin DIN/15-pin serial cable should be wired to implement Enhanced Mode coordinated band switching from the radio without the need to transmit (as opposed to Basic Mode automatic band switching when RF is applied)? In-Reply-To: <72804FA6-7D48-4760-B317-44313205767D@sbcglobal.net> References: <72804FA6-7D48-4760-B317-44313205767D@sbcglobal.net> Message-ID: <2a53bc11-952b-b883-0c6a-5d7d1a7c407d@audiosystemsgroup.com> James, As? a long time KPA500 and KAT500 user, I've never seen the need for any such connection between the rig and the amp. All it takes is a dit or a tap on the mic, and the both are ready to go. The only connections that ARE required is the pull to ground to put the amp in TX mode that loops through the RCA connectors on the KAT500. That is, Key Out from the rig to one RCA on the tuner, and RCA-RCA jumper from the other RCA to the amp. 73, Jim K9YC On 1/16/2019 1:34 PM, James Dahl wrote: > Do the KPA/KAT500 PowerCombo Application Notes regarding Yaesu radios describe how a 10-pin DIN/15-pin serial cable should be wired to implement Enhanced Mode coordinated band switching from the radio without the need to transmit (as opposed to Basic Mode automatic band switching when RF is applied)? From n8ag at comcast.net Wed Jan 16 21:06:19 2019 From: n8ag at comcast.net (Dave) Date: Wed, 16 Jan 2019 21:06:19 -0500 Subject: [Elecraft] SS Amp Message-ID: I?m trying to decide on a SS amp. I already have the KPA500 and love it but the price for the KPA1500 is a bit above my budget. I am looking at the SPE 1.5K-FA which is about $1000 less. I like the fact that it has inputs for two radios and 4 antenna connections. Plus the power supply is built into the same box. I know the response from this list will be pro Elecraft but any constructive or informative comments would be appreciated. Tnx es 73, Dave N8AG Sent from Mail for Windows 10 From va3mw at portcredit.net Wed Jan 16 21:14:46 2019 From: va3mw at portcredit.net (Michael Walker) Date: Wed, 16 Jan 2019 21:14:46 -0500 Subject: [Elecraft] SS Amp In-Reply-To: <20190117020701.D1638149BB24@mailman.qth.net> References: <20190117020701.D1638149BB24@mailman.qth.net> Message-ID: <1396B2D7-FED8-4F88-8C92-D3432FF07D14@portcredit.net> What about https://rf-kit.de/en/ I?ve used mine for about a year now. Mike va3mw Sent from my iPad > On Jan 16, 2019, at 9:06 PM, Dave wrote: > > I?m trying to decide on a SS amp. I already have the KPA500 and love it but the price for the KPA1500 is a bit above my budget. I am looking at the SPE 1.5K-FA which is about $1000 less. I like the fact that it has inputs for two radios and 4 antenna connections. Plus the power supply is built into the same box. I know the response from this list will be pro Elecraft but any constructive or informative comments would be appreciated. > > Tnx es 73, > Dave N8AG > > > Sent from Mail for Windows 10 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to va3mw at portcredit.net From rocketnj at gmail.com Wed Jan 16 21:23:44 2019 From: rocketnj at gmail.com (Dave) Date: Wed, 16 Jan 2019 21:23:44 -0500 Subject: [Elecraft] SS Amp In-Reply-To: <20190117020755.9C2E826B9981@mailman.qth.net> References: <20190117020755.9C2E826B9981@mailman.qth.net> Message-ID: <006D7064-4AA8-4618-8E98-70489A6C5584@gmail.com> - The KPA1500 has two LDMOS devices vs one in the SPE. - The 1500 has better IMD specs and better duty cycle than the SPE. - The KPA1500 has a separate power supply that can be located under the desk. - KPA1500 has Ethernet remote capability. Dave wo2x Sent from my iPad > On Jan 16, 2019, at 9:06 PM, Dave wrote: > > I?m trying to decide on a SS amp. I already have the KPA500 and love it but the price for the KPA1500 is a bit above my budget. I am looking at the SPE 1.5K-FA which is about $1000 less. I like the fact that it has inputs for two radios and 4 antenna connections. Plus the power supply is built into the same box. I know the response from this list will be pro Elecraft but any constructive or informative comments would be appreciated. > > Tnx es 73, > Dave N8AG > > > Sent from Mail for Windows 10 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rocketnj at gmail.com From john at kk9a.com Wed Jan 16 21:39:53 2019 From: john at kk9a.com (john at kk9a.com) Date: Wed, 16 Jan 2019 21:39:53 -0500 Subject: [Elecraft] SS Amp Message-ID: <005201d4ae0d$ed9b8ff0$c8d2afd0$@com> The one piece 10kg lightweight design and a multi-voltage power supply make the SPE 1.5k-fa very nice for travel. I do not recall reading what transistor(s) it uses or know how loud it is or what the IMD is. The Elecraft KPA-1500 is pretty heavy-duty and of course well supported in the U.S. John KK9A Dave n8ag at comcast.net I'm trying to decide on a SS amp. I already have the KPA500 and love it but the price for the KPA1500 is a bit above my budget. I am looking at the SPE 1.5K-FA which is about $1000 less. I like the fact that it has inputs for two radios and 4 antenna connections. Plus the power supply is built into the same box. I know the response from this list will be pro Elecraft but any constructive or informative comments would be appreciated. Tnx es 73, Dave N8AG Sent from Mail for Windows 10 From W2xj at w2xj.net Wed Jan 16 21:47:09 2019 From: W2xj at w2xj.net (W2xj) Date: Wed, 16 Jan 2019 21:47:09 -0500 Subject: [Elecraft] SS Amp In-Reply-To: <20190117020715.0611F149BC94@mailman.qth.net> References: <20190117020715.0611F149BC94@mailman.qth.net> Message-ID: Well you have an Italian amp with one man US support. That one man appears to be at least in his 80s. In my world (broadcast) many of us avoid Italian products. YMMV and you get what you pay for. Sent from my iPad > On Jan 16, 2019, at 9:06 PM, Dave wrote: > > I?m trying to decide on a SS amp. I already have the KPA500 and love it but the price for the KPA1500 is a bit above my budget. I am looking at the SPE 1.5K-FA which is about $1000 less. I like the fact that it has inputs for two radios and 4 antenna connections. Plus the power supply is built into the same box. I know the response from this list will be pro Elecraft but any constructive or informative comments would be appreciated. > > Tnx es 73, > Dave N8AG > > > Sent from Mail for Windows 10 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w2xj at w2xj.net From art at artg.tv Wed Jan 16 22:19:02 2019 From: art at artg.tv (Art Greenberg) Date: Wed, 16 Jan 2019 22:19:02 -0500 Subject: [Elecraft] SS Amp In-Reply-To: <20190117020643.B9A03149B7C5@mailman.qth.net> References: <20190117020643.B9A03149B7C5@mailman.qth.net> Message-ID: <16859d1b088.27a9.655a106e12306bbb359cc4fe76ad911a@artg.tv> I have the 1.5K-FA. I like it. I am not heavily into contesting and I'm not a competitive DXer. Yes, it's less expensive than the KPA1500. It also doesn't integrate as well with the K3. It doesn't control the K3's output power when switching between standby and operate. One needs to remember to do that, especially when switching into operate mode on the amp - massive overdrive isn't pretty and could damage the amplifier. It doesn't remote as well as the KPA1500, either. It comes with a software control panel that runs on Windows. I use VNC to control the amp when operating remote. Art WA2LLN On January 16, 2019 21:09:45 Dave wrote: > I?m trying to decide on a SS amp. I already have the KPA500 and love it but > the price for the KPA1500 is a bit above my budget. I am looking at the SPE > 1.5K-FA which is about $1000 less. I like the fact that it has inputs for > two radios and 4 antenna connections. Plus the power supply is built into > the same box. I know the response from this list will be pro Elecraft but > any constructive or informative comments would be appreciated. > > Tnx es 73, > Dave N8AG > > > Sent from Mail for Windows 10 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to art at artg.tv From lists at subich.com Wed Jan 16 22:54:19 2019 From: lists at subich.com (Joe Subich, W4TV) Date: Wed, 16 Jan 2019 22:54:19 -0500 Subject: [Elecraft] SS Amp In-Reply-To: <005201d4ae0d$ed9b8ff0$c8d2afd0$@com> References: <005201d4ae0d$ed9b8ff0$c8d2afd0$@com> Message-ID: <97e3419a-7ad8-8ec1-4490-366afef4f13d@subich.com> On 2019-01-16 9:39 PM, john at kk9a.com wrote: > I do not recall reading what transistor(s) it uses or know how loud > it is or what the IMD is. The SPE 1.5 uses a single LDMOS device. While it can produce 1500W with sufficient drive, it starts to compress well before the 1000 W level. SPE's own test data supplied to the FCC showed very poor IMD characteristics - what one would call a distortion generator - at "full" power. 73, ... Joe, W4TV On 2019-01-16 9:39 PM, john at kk9a.com wrote: > The one piece 10kg lightweight design and a multi-voltage power supply make > the SPE 1.5k-fa very nice for travel. I do not recall reading what > transistor(s) it uses or know how loud it is or what the IMD is. The > Elecraft KPA-1500 is pretty heavy-duty and of course well supported in the > U.S. > > John KK9A > > > Dave n8ag at comcast.net > > I'm trying to decide on a SS amp. I already have the KPA500 and love it but > the price for the KPA1500 is a bit above my budget. I am looking at the SPE > 1.5K-FA which is about $1000 less. I like the fact that it has inputs for > two radios and 4 antenna connections. Plus the power supply is built into > the same box. I know the response from this list will be pro Elecraft but > any constructive or informative comments would be appreciated. > > Tnx es 73, > Dave N8AG > > > Sent from Mail for Windows 10 > From vk2bj at optusnet.com.au Wed Jan 16 23:40:04 2019 From: vk2bj at optusnet.com.au (Barry Simpson) Date: Thu, 17 Jan 2019 15:40:04 +1100 Subject: [Elecraft] SS Amp In-Reply-To: <20190117020732.09B4C149BE2E@mailman.qth.net> References: <20190117020732.09B4C149BE2E@mailman.qth.net> Message-ID: Hi Dave I had an SPE 1.5KFA for a few months. I have also owned a KPA500 for around 4 or 5 years. Despite the publicity blurb that says the SPE QSK is silent, it isn't. The relay is quite noisy - at least if you are used to the totally silent KPA500. It is also difficult to control power wise. I wanted to run it at around 400 watts and for that you only need about 8 or 9 watts of drive so it is difficult to control accurately. I also found an unexpected quirk whereby using the amplifier affected my transformer (not switch mode) in my Alinco 30A 12V power supply. In sympathy with the keying, the transformer in the PSU kept making a groaning noise that I have never had before. I have surmised that as the SPE has power factor correction circuitry, that is somehow interacting with the transformer. I didn't get the same effect with various switch mode power supplies. At the end of the day, I decided that the SPE was not for me and I sold it. I much prefer the KPA500. If you don't want the KPA1500 there is a very nice looking solid state amp made in the UK by Linear Amp, the Gemini HF 1K. It has some really good reviews on eHam and it appears to have silent QSK. 73 Barry VK2BJ On Thu, 17 Jan 2019 at 13:06, Dave wrote: > I?m trying to decide on a SS amp. I already have the KPA500 and love it > but the price for the KPA1500 is a bit above my budget. I am looking at the > SPE 1.5K-FA which is about $1000 less. I like the fact that it has inputs > for two radios and 4 antenna connections. Plus the power supply is built > into the same box. I know the response from this list will be pro Elecraft > but any constructive or informative comments would be appreciated. > > Tnx es 73, > Dave N8AG > > > Sent from Mail for Windows 10 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to vk2bj at optusnet.com.au From ab2e at hotmail.com Thu Jan 17 00:42:35 2019 From: ab2e at hotmail.com (AB2E Darrell) Date: Thu, 17 Jan 2019 05:42:35 +0000 Subject: [Elecraft] SS Amp In-Reply-To: <006D7064-4AA8-4618-8E98-70489A6C5584@gmail.com> References: <20190117020755.9C2E826B9981@mailman.qth.net>, <006D7064-4AA8-4618-8E98-70489A6C5584@gmail.com> Message-ID: Greetings all, Depends on your use, if you plan to travel and operate on an island etc, then hands down the SPE 1.5K or 1.3k. Looks like most on the list are more concerned for a home amp, and kpa1500 is obviously a great choice too. I just received my SPE 1.5K a couple weeks ago, and prior to that had the 1.3 for 3 yrs. For travel the spe means several less boxes to take...virtually self-contained with the 4 autoselect antenna ports, legal limit ATU, and 2 rig inputs, and autoselect power supply ( will detect 120v or 240v like a laptop does). I have an Acom 2000a also in service at home. All of these amps work great with my k3, like someone else mentioned dont forget to go to each band and lower power if you have low drive 1.3spe (the 1.5k takes regular drive (25 to 30w on mine). 73 Darrell AB2E ________________________________ From: elecraft-bounces at mailman.qth.net on behalf of Dave Sent: Wednesday, January 16, 2019 9:23:44 PM To: Dave Cc: elecraft at mailman.qth.net Subject: Re: [Elecraft] SS Amp - The KPA1500 has two LDMOS devices vs one in the SPE. - The 1500 has better IMD specs and better duty cycle than the SPE. - The KPA1500 has a separate power supply that can be located under the desk. - KPA1500 has Ethernet remote capability. Dave wo2x Sent from my iPad > On Jan 16, 2019, at 9:06 PM, Dave wrote: > > I?m trying to decide on a SS amp. I already have the KPA500 and love it but the price for the KPA1500 is a bit above my budget. I am looking at the SPE 1.5K-FA which is about $1000 less. I like the fact that it has inputs for two radios and 4 antenna connections. Plus the power supply is built into the same box. I know the response from this list will be pro Elecraft but any constructive or informative comments would be appreciated. > > Tnx es 73, > Dave N8AG > > > Sent from Mail for Windows 10 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rocketnj at gmail.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ab2e at hotmail.com From P.Hall at curtin.edu.au Thu Jan 17 01:19:31 2019 From: P.Hall at curtin.edu.au (Peter Hall) Date: Thu, 17 Jan 2019 06:19:31 +0000 Subject: [Elecraft] SS Amp In-Reply-To: References: <20190117020755.9C2E826B9981@mailman.qth.net>, <006D7064-4AA8-4618-8E98-70489A6C5584@gmail.com> Message-ID: Folks, This is an interesting discussion because it's clearly a comparison that potential buyers will do - as I did. In the end, I opted for the Elecraft KPA1500 because I wanted the cleanest solid state base station amplifier I could reasonably buy. I wasn't impressed with the SPE IMD results (at least at the time I was looking) but, that said, I was (and am) at a loss to actually find any published KPA1500 distortion specs. In fact, I find it a curious omission in the Elecraft brochure or manual. If I'm missing a reference somewhere, I'd appreciate a pointer to the specs. As Darrell mentioned, the more flexible switching of the SPE amplifiers is a definite plus and quite seductive. Since obtaining my KPA1500 I've been pleased with it and have done my own IMD measurements using the best exciter I can round up, namely my 50-year old Collins 32S-3. I'm generally pleased with my choice of amplifier but look forward to using it with a predistortion system (e.g. PureSignal) once that spreads beyond the ANAN camp. With any luck, I might even end up with a system that improves on the 50-year old 32S-3/30L-1 combination ? 73, Peter (VK6HP) -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of AB2E Darrell Sent: Thursday, 17 January 2019 1:43 PM To: Dave ; Dave Cc: elecraft at mailman.qth.net Subject: Re: [Elecraft] SS Amp Greetings all, Depends on your use, if you plan to travel and operate on an island etc, then hands down the SPE 1.5K or 1.3k. Looks like most on the list are more concerned for a home amp, and kpa1500 is obviously a great choice too. I just received my SPE 1.5K a couple weeks ago, and prior to that had the 1.3 for 3 yrs. For travel the spe means several less boxes to take...virtually self-contained with the 4 autoselect antenna ports, legal limit ATU, and 2 rig inputs, and autoselect power supply ( will detect 120v or 240v like a laptop does). I have an Acom 2000a also in service at home. All of these amps work great with my k3, like someone else mentioned dont forget to go to each band and lower power if you have low drive 1.3spe (the 1.5k takes regular drive (25 to 30w on mine). 73 Darrell AB2E ________________________________ From: elecraft-bounces at mailman.qth.net on behalf of Dave Sent: Wednesday, January 16, 2019 9:23:44 PM To: Dave Cc: elecraft at mailman.qth.net Subject: Re: [Elecraft] SS Amp - The KPA1500 has two LDMOS devices vs one in the SPE. - The 1500 has better IMD specs and better duty cycle than the SPE. - The KPA1500 has a separate power supply that can be located under the desk. - KPA1500 has Ethernet remote capability. Dave wo2x Sent from my iPad > On Jan 16, 2019, at 9:06 PM, Dave wrote: > > I?m trying to decide on a SS amp. I already have the KPA500 and love it but the price for the KPA1500 is a bit above my budget. I am looking at the SPE 1.5K-FA which is about $1000 less. I like the fact that it has inputs for two radios and 4 antenna connections. Plus the power supply is built into the same box. I know the response from this list will be pro Elecraft but any constructive or informative comments would be appreciated. > > Tnx es 73, > Dave N8AG > > > Sent from Mail for Windows 10 > > ______________________________________________________________ > Elecraft mailing list > Home: > http://secure-web.cisco.com/1miWBX8giC8WHhIDvoDidxjp3mLDPtdS-75HypjV_g > N3voWdJg70Z7OUXuMxkyzDIktnyY--DA0vZ8yBlIVjewrCy3leqckgfjAtJuj5sex_RtGU > 29xMiK4TNroa-HfByvYuAhTomP7Uy4FxYjgVdxQx7QF7dH9laIAcffvSNKxQ65Jt8gFKJn > m9huc_ySLdO41PQZOK-Aew1RTEouQPbFQuQWTfVkqpzMerMpSkAgRq6ABlVAmTSFYRB8Ye > c733tGQYk8-CMaYh9GZLiQX-JIkD284uIpnQX0Hi_pe-Mv8cB2LD4mPvbmqFOgseITFOTx > ZRrCpxx6KB2ViBb_Ji4Nx2GXIGhY69t8OEAWegLbkT73XUKSeO_l33vbZA8iVr7mGCUDIx > kt-uZxPKqDjy0c7WslOdTJ15BSmGc-Ekw_FhorLSCPc6FX6OIeAXk5BE26TYym13huKsV2 > 7WPgvb0yOUMFwY-XRSUKSqCyR7PQsc/http%3A%2F%2Fmailman.qth.net%2Fmailman% > 2Flistinfo%2Felecraft > Help: > http://secure-web.cisco.com/1WCe8BhCrY8_IQkPP4k2RmeMSKiAMxmg2zJaVRGfvW > 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http://secure-web.cisco.com/1WCe8BhCrY8_IQkPP4k2RmeMSKiAMxmg2zJaVRGfvWK5Sy6z5w6nL3-kgge4wmXTJ8Fn0TuNz5KIZPmaIb2keS5axRlHbCw7DDcFaz_drxk2e2wSTSUeXcB015kbHzk2K9VJKD0IfBc2HfXLgLD_d0eYqrcVsVqweCXhm0IqqvveQK8GE0VVC82XeE0jiecXnT0ZIFjYyzyp9tx-taDTPuxKTjybeJsvcFdIM2EZFsHFffF4Ncui99mxVHCYaNvRBso_PaT32HB26-7shr0Ms1elMxGS_StHXHdhs65Wzp3jHF8SCbzyop-fFsKbM9pKOQQnkhauJR-CCw9IsEax6n7guYZAZlOX-AkQtPGsNZL3Mn0wbzwPDFWeE9aGOOF8NEQn932_zlCUfcJdu8zP_W7jrn40o7kwcomc2Z0R5b10h1Uygr-1XN-euCSwDtSVpXJq2b4bbF39Ouv-Ng9ZIgbBf8OW84Z3xAcLWrYUp4bc/http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to p.hall at curtin.edu.au From indians at xsmail.com Thu Jan 17 05:42:08 2019 From: indians at xsmail.com (Petr, OK1RP/M0SIS) Date: Thu, 17 Jan 2019 03:42:08 -0700 (MST) Subject: [Elecraft] SS Amp In-Reply-To: References: <005201d4ae0d$ed9b8ff0$c8d2afd0$@com> Message-ID: <1547721728303-0.post@n2.nabble.com> Hi, just FYI... the articles "Looking for clean SS HF PA w/QSK" in 6 parts on my blog here: http://ok1rp.blogspot.com/2018/11/looking-for-clean-ss-hf-pa-wqsk-part-6.html Talked about: SPE EXPERT 1.3K-FA ACOM 1200S JUMA PA1000 LINEAR Amp Gemini HF-1K Azden AZR-1000 Elecraft KPA1500 Burst-2000A ----- 73 - Petr, OK1RP "Apple & Elecraft freak" B:http://ok1rp.blogspot.com G+:http://goo.gl/w3u2s9 G+: http://goo.gl/gP99xq -- Sent from: http://elecraft.365791.n2.nabble.com/ From indians at xsmail.com Thu Jan 17 05:44:50 2019 From: indians at xsmail.com (Petr, OK1RP/M0SIS) Date: Thu, 17 Jan 2019 03:44:50 -0700 (MST) Subject: [Elecraft] SS Amp In-Reply-To: <20190117020744.79C79149BF8A@mailman.qth.net> References: <20190117020744.79C79149BF8A@mailman.qth.net> Message-ID: <1547721890506-0.post@n2.nabble.com> Hi, just FYI... the articles "Looking for clean SS HF PA w/QSK" in 6 parts on my blog here: http://ok1rp.blogspot.com/2018/11/looking-for-clean-ss-hf-pa-wqsk-part-6.html Talked about: SPE EXPERT 1.3K-FA ACOM 1200S JUMA PA1000 LINEAR Amp Gemini HF-1K Azden AZR-1000 Elecraft KPA1500 Burst-2000A ----- 73 - Petr, OK1RP "Apple & Elecraft freak" B:http://ok1rp.blogspot.com G+:http://goo.gl/w3u2s9 G+: http://goo.gl/gP99xq -- Sent from: http://elecraft.365791.n2.nabble.com/ From raysills3 at verizon.net Thu Jan 17 08:35:11 2019 From: raysills3 at verizon.net (Raymond Sills) Date: Thu, 17 Jan 2019 08:35:11 -0500 Subject: [Elecraft] SS Amp In-Reply-To: Message-ID: <1685c05ce99-840-2ad@webjas-vac013.srv.aolmail.net> HI Gang: I'm glad that this is not an issue for me. Very happy to be a QRP guy. 73 de Ray K2ULR KX3 #211 From macymonkeys at charter.net Thu Jan 17 08:51:30 2019 From: macymonkeys at charter.net (macymonkeys at charter.net) Date: Thu, 17 Jan 2019 05:51:30 -0800 Subject: [Elecraft] SS Amp Message-ID: Me, too. Long live the KPA500 ;) John K7FD -----------------------------------------From: "Raymond Sills" To: elecraft at mailman.qth.net Cc: Sent: Thursday January 17 2019 5:38:58AM Subject: Re: [Elecraft] SS Amp HI Gang: I'm glad that this is not an issue for me. Very happy to be a QRP guy. 73 de Ray K2ULR KX3 #211 ______________________________________________________________ Elecraft mailing list Home: http://www.qsl.net [1] Please help support this email list: Links: ------ [1] http://mailman.qth.net/mailman/listinfo/elecraft http://mailman.qth.net/mailman/listinfo/elecraft /> Help: References: <010c01d4ad41$65de6460$319b2d20$@verizon.net> <95152fd1-c94f-feb6-02cb-ad3161c8ad32@gmail.com> Message-ID: <1547742639646-0.post@n2.nabble.com> You have several choices. 1. Add voltage or current balun at tuner output. Voltage 4:1 is simpler. 2. Connect the ladder line directly but loop the coax by the tuner a few times around a large toroid. This is equivalent to adding a balun. Do not ground the tuner. The first option guarantees balance but may add some losses. The second one is trivial to do. Most likely you will not be able to tell a difference. I used to have 70ft dipole at 25 ft fed with ladderline all the way to the shack. Matched by MFJ-962C, which had internal balun. Never a problem with up to 500W and even worked coast to coast on 160m! Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ From jh at hoffmaninv.com Thu Jan 17 13:18:06 2019 From: jh at hoffmaninv.com (W8JH) Date: Thu, 17 Jan 2019 11:18:06 -0700 (MST) Subject: [Elecraft] SS Amp In-Reply-To: <1396B2D7-FED8-4F88-8C92-D3432FF07D14@portcredit.net> References: <20190117020744.79C79149BF8A@mailman.qth.net> <1396B2D7-FED8-4F88-8C92-D3432FF07D14@portcredit.net> Message-ID: <1547749086207-0.post@n2.nabble.com> I have been happy with my SPE 1.3. Most important to me was the ability to use my 10W K3s or my KX3 to get full output if desired (I never felt the need use it at 1.3KW on air). I usually run it at 500-1000W output happily. The multiple antenna/radio ports are a plus. It is definitely noisier than my KPA-500 though and seems more sensitive to SWR. 73, Joe, W8JH ----- 73, Joe, W8JH K3 1713, KPA 132, KX3 7498 -- Sent from: http://elecraft.365791.n2.nabble.com/ From wes_n7ws at triconet.org Thu Jan 17 14:43:02 2019 From: wes_n7ws at triconet.org (Wes Stewart) Date: Thu, 17 Jan 2019 12:43:02 -0700 Subject: [Elecraft] Non-Resonant Antennas and Chokes In-Reply-To: <7d79e787-3242-ceb5-d5b3-dd7264a05cbc@gmail.com> References: <010c01d4ad41$65de6460$319b2d20$@verizon.net> <32691c7a-c74e-fec9-d60b-0e9cb220a059@triconet.org> <7d79e787-3242-ceb5-d5b3-dd7264a05cbc@gmail.com> Message-ID: <4064036b-4dac-d8f0-e545-06bcbdc28d94@triconet.org> Oh dear.? Of course I know that stuff. BTW, except for very lossy RX antennas the only thing I know of that gives a "flat" SWR is a dummy load. The OP said, "My antenna, for 40 mtr's, is a 67' wire up about 25'."? Why should he make a 40-meter dipole so complicated? Wes? N7WS On 1/16/2019 9:37 AM, Ken wrote: > > On 1/16/19 12:11 AM, Wes Stewart wrote: >> Why don't you cut the dipole in the center, add an insulator and feed it with >> coax?? Put a CM choke at the feedpoint if you insist and lose the ladderline >> and tuner. _Prune the wire length for resonance. _ > > > You do realize that "pruning" for resonance will rarely give a flat SWR and > pruning for low SWR does not mean the antenna is resonant? > > > Of course, if you cut an end fed Zepp and feed it in the center with coax, it > becomes a single band dipole instead of a multi band antenna. > > > Ken WA8JXM From gt-i at gmx.net Thu Jan 17 19:11:05 2019 From: gt-i at gmx.net (gt-i at gmx.net) Date: Fri, 18 Jan 2019 01:11:05 +0100 Subject: [Elecraft] Sorta OT - assistive technology assistance needed In-Reply-To: References: Message-ID: James, a widely used design is to wire the sources together via some resistors, and get some gain by a following OP-amp. The resistors could be made as pots to adjust volume. I built one for my guitar amp, if you look into DIY guitar electronics you'll find plenty of design ideas. here is mine: https://www.log49.com/index.php?/archives/18-For-my-guitar-Pre-Amp,-Effect-and-Mixer.html Note that you may have to add some extra capacitors to block RF, not all readily available mixer boxes pay attention to that, really. 73 Gernot DF5RF Am 10.01.2019 um 00:03 schrieb Richards: > Good Day. > > Background: > > I am assisting a blind ham who also suffers some hearing loss.? I > suggested using headphones to attenuate ambient environmental noise as > he operates.? The rub is, he needs to hear both his receiver AND his > computer (which provides audible feedback when logging contacts and > performing other duties.) > > Question: > > Can anyone suggest a simple passive (or active) mixer circuit schema I > can build for him to safely mix audio signals from his transceiver > headphone jack with audio signals from his computer sound card > headphone jack? > > Discussion: > > While there are multiple commercially produced simple and complex > mixing products in the marketplace, I would prefer to build an > inexpensive, small footprint solution we can easily incorporate in his > station to minimize clutter and the number of cables, jacks, and > controls -- he contends with plenty of that already.?? I suppose one > solution might be a simple Y-adapter cable, but that seems too easy > and I wonder whether we should isolate the signals and/or grounds in > some way?? (e.g., I do not wish to cause any "Pin-1" grounding issues, > and etc.) > > Any traction??? Can anyone point me to an appropriate circuit > schematic or other resource?? I don 't mind doing homework, and while > I enjoy building stuff and I am familiar with the basic concepts > involved,? I could use a leg up on this project, especially to keep it > simple and easy to build and implement. Please reply off list if this > question is too far off topic, although I suspect there are many hams > who might be interested in the result, besides similarly situated > disabled operators. > > Thank you -? James - K8JHR - > --------------------------------------- > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to gt-i at gmx.net From bob at hogbytes.com Fri Jan 18 08:39:06 2019 From: bob at hogbytes.com (Bob N3MNT) Date: Fri, 18 Jan 2019 06:39:06 -0700 (MST) Subject: [Elecraft] Sorta OT - assistive technology assistance needed In-Reply-To: References: Message-ID: <1547818746122-0.post@n2.nabble.com> Quick and dirty solution is to use PC out to one channel of stereo headphones and radio out to the other channel. Then if needed amplify via small low cost stereo amp. -- Sent from: http://elecraft.365791.n2.nabble.com/ From tombewick at gmail.com Fri Jan 18 08:48:41 2019 From: tombewick at gmail.com (K2bew) Date: Fri, 18 Jan 2019 08:48:41 -0500 Subject: [Elecraft] K2 VCO Alignment T5 L30 Message-ID: Don et al, Since I know Don monitors the reflector as well as the support emails, rather than email Don directly I thought I would ask the question on here because I know I always find it helpful to read other peoples questions on here and Don's answer. Building the K2 I am at the VCO Alignment voltage check on R30 and adjusting L30. VFO frequency set at 4000.00 kHz I initially got 3.5 volts and bottomed out L30 to get it to 5.5 volts, and then I over screwed it to try to get that last half a volt and ended damaging it, so, then I carefully took out L30 and put in a new one. I also took out T5 and rechecked all the ends for continuity, rewound the green wire to space it exactly in the middle of the red winding and spaced everything evenly. I confirmed it is the large yellow core, I have 16 on the red wire and 4 on the green (by the way the illustration shows 14 turns of red) . I verified I have R30 as Br-R-Br 120 ohms with both my DVM and by color, and I verified C72 is 271, and I reflowed the solder on both. With a new 4.7 inductor (large slot, no red mark) in L30 I now get 2.75 volts on the left side of R30 to start with and it bottoms out at 4.5 volts (I was very careful to not bottom it out too hard this time and damage this one, and I have already ordered a couple new ones from Elecraft). What else can I do to increase that voltage? Would changing the number of windings on T5 change it enough to get to 6 volts? Thank you and 73, Tom Bewick K2BEW From donwilh at embarqmail.com Fri Jan 18 10:33:24 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Fri, 18 Jan 2019 10:33:24 -0500 Subject: [Elecraft] K2 VCO Alignment T5 L30 In-Reply-To: References: Message-ID: Tom, Normally I would say to spread or compress the turns on T5, but Elecraft encountered a batch of J310 FETs that do not work very well at Q19 - the PLL reference oscillator. These troublesome FETs have now been purged from the Elecraft stock, that the problem should go away going forward. I am not sure that is your problem, but it is worthy of checking. First question is - did you get good frequency readings for the PLL Reference Oscillator range? If it fails, you see a strange frequency reading at the high frequency end (when BAND+ is tapped). Now, the other "funny" thing is that it sometimes checks OK with the internal counter probe plugged into TP3, but fails when the probe is removed. Under those conditions, the PLL and VFO do not lock together So the first thing to try is to solder a 10 to 15pF capacitor between the source of Q19 and ground. Then between a combination of adjusting the red turns on T5 and L30 see if you can obtain the correct R30 voltage. If that is successful, then all should be well. If not successful, get a replacement Q19 from Elecraft. Send the part number and description to parts at elecraft.com and ask for a replacement. If that does not correct things, then email me and we can go through some other checks to determine the source of the failure. 73, Don W3FPR On 1/18/2019 8:48 AM, K2bew wrote: > Don et al, > > Since I know Don monitors the reflector as well as the support emails, > rather than email Don directly I thought I would ask the question on here > because I know I always find it helpful to read other peoples questions on > here and Don's answer. > > Building the K2 I am at the VCO Alignment voltage check on R30 and > adjusting L30. > VFO frequency set at 4000.00 kHz > I initially got 3.5 volts and bottomed out L30 to get it to 5.5 volts, and > then I over screwed it to try to get that last half a volt and ended > damaging it, so, then I carefully took out L30 and put in a new one. > > I also took out T5 and rechecked all the ends for continuity, rewound the > green wire to space it exactly in the middle of the red winding and spaced > everything evenly. I confirmed it is the large yellow core, I have 16 on > the red wire and 4 on the green (by the way the illustration shows 14 turns > of red) . I verified I have R30 as Br-R-Br 120 ohms with both my DVM and by > color, and I verified C72 is 271, and I reflowed the solder on both. > With a new 4.7 inductor (large slot, no red mark) in L30 I now get 2.75 > volts on the left side of R30 to start with and it bottoms out at 4.5 volts > (I was very careful to not bottom it out too hard this time and damage this > one, and I have already ordered a couple new ones from Elecraft). > > What else can I do to increase that voltage? Would changing the number of > windings on T5 change it enough to get to 6 volts? > > Thank you and 73, > Tom Bewick K2BEW From macymonkeys at charter.net Fri Jan 18 11:11:14 2019 From: macymonkeys at charter.net (Macy monkeys) Date: Fri, 18 Jan 2019 08:11:14 -0800 Subject: [Elecraft] KPA500 external mains switch Message-ID: <6B9C9482-DA23-4EE1-9ADB-DE0C3A2417C8@charter.net> Is anyone in the US using a separate 220v external mains switch on their KPA500? I'm wondering where these are available. Or is anyone using a 220 v surge protector? Are these available for the NEMA 6-15 plug? John K7FD From rmcgraw at blomand.net Fri Jan 18 11:30:14 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Fri, 18 Jan 2019 10:30:14 -0600 Subject: [Elecraft] KPA500 external mains switch In-Reply-To: <6B9C9482-DA23-4EE1-9ADB-DE0C3A2417C8@charter.net> References: <6B9C9482-DA23-4EE1-9ADB-DE0C3A2417C8@charter.net> Message-ID: <76de57a0-abb2-85c5-8bbe-57691d038256@blomand.net> I have a whole house surge protector installed at the Mains breaker panel.? Thus I find no need to have individual surge protection for any of the equipment locations in the QTH.?? This takes care of microwave, range, furnace, washer, radios, TV's, entertainment systems, phone system and such. Not sure I like or agree with the idea of a separate mains switch.? If for remote purposes, remember when turning off the amp via the front power switch, one must allow the voltage to bleed down before shutting off the main power switch on the rear.? {Per the manual}? This would seem to be true with an external switch. I've assisted many hams with issue resolution only to find out they have and use a "big switch" or otherwise to shut down the station.? This IS NOT a good idea as many/most microprocessor circuits have provision to save data before shutting down equipment.? Thus if one uses a "big switch" it kills the DC source thus the processor does not have the opportunity to save the data status.?? As to what's left......., sometimes scrambled data, and that's where the issues arise. 73 Bob, K4TAX On 1/18/2019 10:11 AM, Macy monkeys wrote: > Is anyone in the US using a separate 220v external mains switch on their KPA500? I'm wondering where these are available. Or is anyone using a 220 v surge protector? Are these available for the NEMA 6-15 plug? > > John K7FD > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From john at kk9a.com Fri Jan 18 11:52:45 2019 From: john at kk9a.com (john at kk9a.com) Date: Fri, 18 Jan 2019 11:52:45 -0500 Subject: [Elecraft] KPA500 external mains switch Message-ID: <6907696c8b1ec1e6c50f94dc4a7c9133.squirrel@www11.qth.com> You did not specify why you want an external mains switch. I have a 240v surge protector in my electrical panel, it covers the whole house. John KK9A K7FD wrote: Is anyone in the US using a separate 220v external mains switch on their KPA500? I'm wondering where these are available. Or is anyone using a 220 v surge protector? Are these available for the NEMA 6-15 plug? John K7FD From FlatHat at comcast.net Fri Jan 18 11:54:23 2019 From: FlatHat at comcast.net (Richard) Date: Fri, 18 Jan 2019 11:54:23 -0500 Subject: [Elecraft] WSJT-X Frequency Anomaly Message-ID: After working a friend on 10 meters with FT8 I phoned and asked him why he always stayed up high at 2454 Hz. He said WSJT-X said he was dead on 2500 Hz. I asked him what it said my frequency was. He said it was 1048 Hz; my WSJT-X said I was dead on 1000 Hz. We did more testing at other frequencies and on other bands and found similar discrepancies. We involved a third station and compared three ways. The results were the same: no agreement anywhere. The radios were my K3s, a TS-990s, and a high-end Yaesu. All of us were using WSJT-X 2.0.0. None of us had RIT or XIT in use. What?s the deal? Is there a way to calibrate the software so the frequency shown by WSJT-X is the frequency upon which we are actually transmitting or receiving? Please keep in mind that none of us is a Paul Horowitz, but neither are we Gomer Pyle? somewhere in between. Cheers. Richard - W4KBX From va3mw at portcredit.net Fri Jan 18 11:58:47 2019 From: va3mw at portcredit.net (Michael Walker) Date: Fri, 18 Jan 2019 11:58:47 -0500 Subject: [Elecraft] KPA500 external mains switch In-Reply-To: <6907696c8b1ec1e6c50f94dc4a7c9133.squirrel@www11.qth.com> References: <6907696c8b1ec1e6c50f94dc4a7c9133.squirrel@www11.qth.com> Message-ID: I John I run a remote and have for over 15 years, a lot of that with Amps like the KPA500. I really don't see a need for a surge protector when you have a real 'torroid' transformer. As for 220VAC switch, I use a 12v relay connected to my RemoteQTH server run by a RPI to turn off the 220AC if I need to. I do do this during the summer in thunderstorm season, but all winter, I never touch it at all. The Amps stays powered by 220VAC. Is there a reason you think you might need one? If you are worried about lightning, it won't help. Mike va3mw On Fri, Jan 18, 2019 at 11:53 AM john at kk9a.com wrote: > You did not specify why you want an external mains switch. I have a 240v > surge protector in my electrical panel, it covers the whole house. > > John KK9A > > > K7FD wrote: > > Is anyone in the US using a separate 220v external mains switch on their > KPA500? I'm wondering where these are available. Or is anyone using a 220 > v surge protector? Are these available for the NEMA 6-15 plug? > > John K7FD > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to va3mw at portcredit.net > From wa6nhc at gmail.com Fri Jan 18 12:07:02 2019 From: wa6nhc at gmail.com (Rick WA6NHC) Date: Fri, 18 Jan 2019 09:07:02 -0800 Subject: [Elecraft] WSJT-X Frequency Anomaly In-Reply-To: References: Message-ID: <8c2f8823-fe0a-b691-2cf7-0e12732709cd@gmail.com> The obvious first places to look are the calibrations of each radio.? My K3 (always one, has the TCXO option) stays within a cycle or two and I can 'net' it to within about a quarter cycle (using the WOW method).? Who ever answers on the tone freq I use in FT8 (actually kind of rude because multiple callers cause a mess, use an offset) is typically within one cycle of what I've selected, so it's not a common issue. I'd venture proper calibration hasn't been done within that group. If no one else has done that, your mileage WILL vary.? This is the most likely reason since phone folks tend to tolerate frequency variations easier than other modes. The other place is to make sure that the XIT (or second VFO) is not engaged. Rick NHC On 1/18/2019 8:54 AM, Richard wrote: > After working a friend on 10 meters with FT8 I phoned and asked him why he always stayed up high at 2454 Hz. He said WSJT-X said he was dead on 2500 Hz. > > I asked him what it said my frequency was. He said it was 1048 Hz; my WSJT-X said I was dead on 1000 Hz. We did more testing at other frequencies and on other bands and found similar discrepancies. > > We involved a third station and compared three ways. The results were the same: no agreement anywhere. > > The radios were my K3s, a TS-990s, and a high-end Yaesu. All of us were using WSJT-X 2.0.0. None of us had RIT or XIT in use. > > What?s the deal? Is there a way to calibrate the software so the frequency shown by WSJT-X is the frequency upon which we are actually transmitting or receiving? > > Please keep in mind that none of us is a Paul Horowitz, but neither are we Gomer Pyle? somewhere in between. > > Cheers. > Richard - W4KBX > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wa6nhc at gmail.com From macymonkeys at charter.net Fri Jan 18 12:25:41 2019 From: macymonkeys at charter.net (Macy monkeys) Date: Fri, 18 Jan 2019 09:25:41 -0800 Subject: [Elecraft] KPA500 external mains switch In-Reply-To: References: <6907696c8b1ec1e6c50f94dc4a7c9133.squirrel@www11.qth.com> Message-ID: <23EB037C-646D-4FD8-A6C2-1067F6379142@charter.net> Yes, lightning was a concern. Regarding an external mains switch, I read in the manual that circuitry remains ON for remote operation when the amp is off. I don't need the circuitry to be on. However... ...it sounds like I need not worry about either! Thanks! John K7FD > On Jan 18, 2019, at 8:58 AM, Michael Walker wrote: > > I John > > I run a remote and have for over 15 years, a lot of that with Amps like the > KPA500. I really don't see a need for a surge protector when you have a > real 'torroid' transformer. > > As for 220VAC switch, I use a 12v relay connected to my RemoteQTH server > run by a RPI to turn off the 220AC if I need to. I do do this during the > summer in thunderstorm season, but all winter, I never touch it at all. > The Amps stays powered by 220VAC. > > Is there a reason you think you might need one? > > If you are worried about lightning, it won't help. > > Mike va3mw > > >> On Fri, Jan 18, 2019 at 11:53 AM john at kk9a.com wrote: >> >> You did not specify why you want an external mains switch. I have a 240v >> surge protector in my electrical panel, it covers the whole house. >> >> John KK9A >> >> >> K7FD wrote: >> >> Is anyone in the US using a separate 220v external mains switch on their >> KPA500? I'm wondering where these are available. Or is anyone using a 220 >> v surge protector? Are these available for the NEMA 6-15 plug? >> >> John K7FD >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to va3mw at portcredit.net > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to macymonkeys at charter.net From rmcgraw at blomand.net Fri Jan 18 12:52:15 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Fri, 18 Jan 2019 11:52:15 -0600 Subject: [Elecraft] KPA500 external mains switch In-Reply-To: <23EB037C-646D-4FD8-A6C2-1067F6379142@charter.net> References: <6907696c8b1ec1e6c50f94dc4a7c9133.squirrel@www11.qth.com> <23EB037C-646D-4FD8-A6C2-1067F6379142@charter.net> Message-ID: If lightning is the item of concern, there's bigger fish to fry in that regard.? Lightning protection is an entire other story and a very specific approach to lightning mitigation.???? I use the word "mitigation" to emphasize the point that all efforts for lightning protection is an effort to "minimize" the damage. Notice I didn't say eliminate the damage.?? Won't happen. I told a friend who had asked "how do I protect my equipment from lightning damage?".?? My answer; "put it in the box, seal the box, place the box under the bed and hope that a lightning strike isn't the cause for the the house to burn down".??? Come to think about it? " do houses burn up, or do they burn down?"? Guess it makes no difference. 73 Bob, K4TAX On 1/18/2019 11:25 AM, Macy monkeys wrote: > Yes, lightning was a concern. Regarding an external mains switch, I read in the manual that circuitry remains ON for remote operation when the amp is off. I don't need the circuitry to be on. However... > > ...it sounds like I need not worry about either! > > Thanks! > > John K7FD > >> On Jan 18, 2019, at 8:58 AM, Michael Walker wrote: >> >> I John >> >> I run a remote and have for over 15 years, a lot of that with Amps like the >> KPA500. I really don't see a need for a surge protector when you have a >> real 'torroid' transformer. >> >> As for 220VAC switch, I use a 12v relay connected to my RemoteQTH server >> run by a RPI to turn off the 220AC if I need to. I do do this during the >> summer in thunderstorm season, but all winter, I never touch it at all. >> The Amps stays powered by 220VAC. >> >> Is there a reason you think you might need one? >> >> If you are worried about lightning, it won't help. >> >> Mike va3mw >> >> >>> On Fri, Jan 18, 2019 at 11:53 AM john at kk9a.com wrote: >>> >>> You did not specify why you want an external mains switch. I have a 240v >>> surge protector in my electrical panel, it covers the whole house. >>> >>> John KK9A >>> >>> >>> K7FD wrote: >>> >>> Is anyone in the US using a separate 220v external mains switch on their >>> KPA500? I'm wondering where these are available. Or is anyone using a 220 >>> v surge protector? Are these available for the NEMA 6-15 plug? >>> >>> John K7FD >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to va3mw at portcredit.net >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to macymonkeys at charter.net > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From tombewick at gmail.com Fri Jan 18 13:26:15 2019 From: tombewick at gmail.com (K2bew) Date: Fri, 18 Jan 2019 13:26:15 -0500 Subject: [Elecraft] K2 VCO Alignment T5 L30 In-Reply-To: References: Message-ID: Thanks a lot Don and Ed, I will be working on it over the weekend and will report back. 73, Tom On Fri, Jan 18, 2019, 10:33 AM Don Wilhelm Tom, > > Normally I would say to spread or compress the turns on T5, but Elecraft > encountered a batch of J310 FETs that do not work very well at Q19 - the > PLL reference oscillator. These troublesome FETs have now been purged > from the Elecraft stock, that the problem should go away going forward. > I am not sure that is your problem, but it is worthy of checking. > > First question is - did you get good frequency readings for the PLL > Reference Oscillator range? If it fails, you see a strange frequency > reading at the high frequency end (when BAND+ is tapped). > Now, the other "funny" thing is that it sometimes checks OK with the > internal counter probe plugged into TP3, but fails when the probe is > removed. > > Under those conditions, the PLL and VFO do not lock together > > So the first thing to try is to solder a 10 to 15pF capacitor between > the source of Q19 and ground. Then between a combination of adjusting > the red turns on T5 and L30 see if you can obtain the correct R30 voltage. > > If that is successful, then all should be well. > > If not successful, get a replacement Q19 from Elecraft. Send the part > number and description to parts at elecraft.com and ask for a replacement. > > If that does not correct things, then email me and we can go through > some other checks to determine the source of the failure. > > 73, > Don W3FPR > > On 1/18/2019 8:48 AM, K2bew wrote: > > Don et al, > > > > Since I know Don monitors the reflector as well as the support emails, > > rather than email Don directly I thought I would ask the question on here > > because I know I always find it helpful to read other peoples questions > on > > here and Don's answer. > > > > Building the K2 I am at the VCO Alignment voltage check on R30 and > > adjusting L30. > > VFO frequency set at 4000.00 kHz > > I initially got 3.5 volts and bottomed out L30 to get it to 5.5 volts, > and > > then I over screwed it to try to get that last half a volt and ended > > damaging it, so, then I carefully took out L30 and put in a new one. > > > > I also took out T5 and rechecked all the ends for continuity, rewound the > > green wire to space it exactly in the middle of the red winding and > spaced > > everything evenly. I confirmed it is the large yellow core, I have 16 on > > the red wire and 4 on the green (by the way the illustration shows 14 > turns > > of red) . I verified I have R30 as Br-R-Br 120 ohms with both my DVM and > by > > color, and I verified C72 is 271, and I reflowed the solder on both. > > With a new 4.7 inductor (large slot, no red mark) in L30 I now get 2.75 > > volts on the left side of R30 to start with and it bottoms out at 4.5 > volts > > (I was very careful to not bottom it out too hard this time and damage > this > > one, and I have already ordered a couple new ones from Elecraft). > > > > What else can I do to increase that voltage? Would changing the number of > > windings on T5 change it enough to get to 6 volts? > > > > Thank you and 73, > > Tom Bewick K2BEW > From jim at audiosystemsgroup.com Fri Jan 18 14:25:43 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Fri, 18 Jan 2019 11:25:43 -0800 Subject: [Elecraft] KPA500 external mains switch In-Reply-To: <76de57a0-abb2-85c5-8bbe-57691d038256@blomand.net> References: <6B9C9482-DA23-4EE1-9ADB-DE0C3A2417C8@charter.net> <76de57a0-abb2-85c5-8bbe-57691d038256@blomand.net> Message-ID: On 1/18/2019 8:30 AM, Bob McGraw K4TAX wrote: > Thus I find no need to have individual surge protection for any of the > equipment locations in the QTH.?? This takes care of microwave, range, > furnace, washer, radios, TV's, entertainment systems, phone system and > such. IEEE studies have shown that lightning can induce up to 3kV on the branch circuits that make up house wiring. That's a powerful reason for suppressorson branch circuitsto protect equipment! 73, Jim K9YC From donwilh at embarqmail.com Fri Jan 18 16:23:34 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Fri, 18 Jan 2019 16:23:34 -0500 Subject: [Elecraft] WSJT-X Frequency Anomaly In-Reply-To: <8c2f8823-fe0a-b691-2cf7-0e12732709cd@gmail.com> References: <8c2f8823-fe0a-b691-2cf7-0e12732709cd@gmail.com> Message-ID: <5461e0e6-aa70-871e-f67d-8502dfa7702a@embarqmail.com> Note that in the two cases mentioned, you reported 47 +/-1 Hz difference. That is not much and can easily be attributed to a difference in the calibration of the radio or the audio frequency accuracy of the soundcards. 73, Don W3FPR On 1/18/2019 12:07 PM, Rick WA6NHC wrote: > On 1/18/2019 8:54 AM, Richard wrote: >> After working a friend on 10 meters with FT8 I phoned and asked him >> why he always stayed up high at 2454 Hz. He said WSJT-X said he was >> dead on 2500 Hz. >> >> I asked him what it said my frequency was. He said it was 1048 Hz; my >> WSJT-X said I was dead on 1000 Hz. We did more testing at other >> frequencies and on other bands and found similar discrepancies. >> From k9yeq at live.com Fri Jan 18 16:43:21 2019 From: k9yeq at live.com (Bill Johnson) Date: Fri, 18 Jan 2019 21:43:21 +0000 Subject: [Elecraft] KPA500 external mains switch In-Reply-To: <76de57a0-abb2-85c5-8bbe-57691d038256@blomand.net> References: <6B9C9482-DA23-4EE1-9ADB-DE0C3A2417C8@charter.net> <76de57a0-abb2-85c5-8bbe-57691d038256@blomand.net> Message-ID: Bob, totally agree and this is exactly what I have. Main breaker box, whole house protection. Lightning is, of course, a whole different conversation when it comes to direct hits. Line spikes can wear out motors, take out weak power supplies, etc., which the suppressor will protect. 73, Bill K9YEQ https://wrj-tech.com/ -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Bob McGraw K4TAX Sent: Friday, January 18, 2019 10:30 AM To: elecraft at mailman.qth.net Subject: Re: [Elecraft] KPA500 external mains switch I have a whole house surge protector installed at the Mains breaker panel.? Thus I find no need to have individual surge protection for any of the equipment locations in the QTH.?? This takes care of microwave, range, furnace, washer, radios, TV's, entertainment systems, phone system and such. Not sure I like or agree with the idea of a separate mains switch.? If for remote purposes, remember when turning off the amp via the front power switch, one must allow the voltage to bleed down before shutting off the main power switch on the rear.? {Per the manual}? This would seem to be true with an external switch. I've assisted many hams with issue resolution only to find out they have and use a "big switch" or otherwise to shut down the station.? This IS NOT a good idea as many/most microprocessor circuits have provision to save data before shutting down equipment.? Thus if one uses a "big switch" it kills the DC source thus the processor does not have the opportunity to save the data status.?? As to what's left......., sometimes scrambled data, and that's where the issues arise. 73 Bob, K4TAX On 1/18/2019 10:11 AM, Macy monkeys wrote: > Is anyone in the US using a separate 220v external mains switch on their KPA500? I'm wondering where these are available. Or is anyone using a 220 v surge protector? Are these available for the NEMA 6-15 plug? > > John K7FD > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to > rmcgraw at blomand.net > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com From rmcgraw at blomand.net Fri Jan 18 17:21:15 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Fri, 18 Jan 2019 16:21:15 -0600 Subject: [Elecraft] KPA500 external mains switch In-Reply-To: References: <6B9C9482-DA23-4EE1-9ADB-DE0C3A2417C8@charter.net> <76de57a0-abb2-85c5-8bbe-57691d038256@blomand.net> Message-ID: <58076a46-2350-81a9-5f2a-ec52e30dea5f@blomand.net> Bill: That is my general objective.?? Having surge protector strips all over the house has not proven worthwhile.? On the other hand, the installation of whole house surge protection has proven to be much more successful.? This also takes care of switching transits cause by load balancing by the power company. As to protection for lightning, that's a totally different approach and methodology.? Lightning rods installed on the house, all ground rods bonded together, copper plumbing to ground system, all services {phone, cable, TV antenna, satellite dish and etc} connected to the bonded ground system. Still if there is a direct strike, as we have received, get ready to repair and replace some stuff.? Hopefully, the house is still standing. 73 Bob, K4TAX On 1/18/2019 3:43 PM, Bill Johnson wrote: > Bob, totally agree and this is exactly what I have. Main breaker box, whole house protection. Lightning is, of course, a whole different conversation when it comes to direct hits. Line spikes can wear out motors, take out weak power supplies, etc., which the suppressor will protect. > > 73, > Bill > K9YEQ > > https://wrj-tech.com/ > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net On Behalf Of Bob McGraw K4TAX > Sent: Friday, January 18, 2019 10:30 AM > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] KPA500 external mains switch > > I have a whole house surge protector installed at the Mains breaker panel.? Thus I find no need to have individual surge protection for any of the equipment locations in the QTH.?? This takes care of microwave, range, furnace, washer, radios, TV's, entertainment systems, phone system and such. > > Not sure I like or agree with the idea of a separate mains switch.? If for remote purposes, remember when turning off the amp via the front power switch, one must allow the voltage to bleed down before shutting off the main power switch on the rear.? {Per the manual}? This would seem to be true with an external switch. > > I've assisted many hams with issue resolution only to find out they have and use a "big switch" or otherwise to shut down the station.? This IS NOT a good idea as many/most microprocessor circuits have provision to save data before shutting down equipment.? Thus if one uses a "big switch" it kills the DC source thus the processor does not have the opportunity to save the data status.?? As to what's left......., sometimes scrambled data, and that's where the issues arise. > > 73 > > Bob, K4TAX > > > On 1/18/2019 10:11 AM, Macy monkeys wrote: >> Is anyone in the US using a separate 220v external mains switch on their KPA500? I'm wondering where these are available. Or is anyone using a 220 v surge protector? Are these available for the NEMA 6-15 plug? >> >> John K7FD >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net Please help support this email >> list: http://www.qsl.net/donate.html Message delivered to >> rmcgraw at blomand.net >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com From rmcgraw at blomand.net Fri Jan 18 17:27:36 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Fri, 18 Jan 2019 16:27:36 -0600 Subject: [Elecraft] WSJT-X Frequency Anomaly In-Reply-To: <5461e0e6-aa70-871e-f67d-8502dfa7702a@embarqmail.com> References: <8c2f8823-fe0a-b691-2cf7-0e12732709cd@gmail.com> <5461e0e6-aa70-871e-f67d-8502dfa7702a@embarqmail.com> Message-ID: There is a Freq Cal mode in WSJT-X.?? I suggest if the radio or sound card is in question, run this mode and determine the results.? Bet you'll be surprised at the inaccuracy of the digital readout on a radio and or soundcard.?? I was! 73 Bob, K4TAX On 1/18/2019 3:23 PM, Don Wilhelm wrote: > Note that in the two cases mentioned, you reported 47 +/-1 Hz difference. > > That is not much and can easily be attributed to a difference in the > calibration of the radio or the audio frequency accuracy of the > soundcards. > > 73, > Don W3FPR > > On 1/18/2019 12:07 PM, Rick WA6NHC wrote: > >> On 1/18/2019 8:54 AM, Richard wrote: >>> After working a friend on 10 meters with FT8 I phoned and asked him >>> why he always stayed up high at 2454 Hz. He said WSJT-X said he was >>> dead on 2500 Hz. >>> >>> I asked him what it said my frequency was. He said it was 1048 Hz; >>> my WSJT-X said I was dead on 1000 Hz. We did more testing at other >>> frequencies and on other bands and found similar discrepancies. >>> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From mike.harris at horizon.co.fk Fri Jan 18 17:42:03 2019 From: mike.harris at horizon.co.fk (Mike Harris) Date: Fri, 18 Jan 2019 19:42:03 -0300 Subject: [Elecraft] WSJT-X Frequency Anomaly In-Reply-To: <5461e0e6-aa70-871e-f67d-8502dfa7702a@embarqmail.com> References: <8c2f8823-fe0a-b691-2cf7-0e12732709cd@gmail.com> <5461e0e6-aa70-871e-f67d-8502dfa7702a@embarqmail.com> Message-ID: Do a sanity check by listening to WWV. That will tell you if your various radios are telling frequency lies or not. The thing to be aware of is that the reference oscillators in the respective radios will drift. There is a method using WWV in the K3 manual to check and adjust the REF CAL error. Regards, Mike VP8NO On 18/01/2019 18:23, Don Wilhelm wrote: > Note that in the two cases mentioned, you reported 47 +/-1 Hz difference. > > That is not much and can easily be attributed to a difference in the > calibration of the radio or the audio frequency accuracy of the soundcards. > > 73, > Don W3FPR > > On 1/18/2019 12:07 PM, Rick WA6NHC wrote: > >> On 1/18/2019 8:54 AM, Richard wrote: >>> After working a friend on 10 meters with FT8 I phoned and asked him >>> why he always stayed up high at 2454 Hz. He said WSJT-X said he was >>> dead on 2500 Hz. >>> >>> I asked him what it said my frequency was. He said it was 1048 Hz; my >>> WSJT-X said I was dead on 1000 Hz. We did more testing at other >>> frequencies and on other bands and found similar discrepancies. >>> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to mike.harris at horizon.co.fk > From k9yeq at live.com Fri Jan 18 17:45:35 2019 From: k9yeq at live.com (Bill Johnson) Date: Fri, 18 Jan 2019 22:45:35 +0000 Subject: [Elecraft] KPA500 external mains switch In-Reply-To: <58076a46-2350-81a9-5f2a-ec52e30dea5f@blomand.net> References: <6B9C9482-DA23-4EE1-9ADB-DE0C3A2417C8@charter.net> <76de57a0-abb2-85c5-8bbe-57691d038256@blomand.net> <58076a46-2350-81a9-5f2a-ec52e30dea5f@blomand.net> Message-ID: Exactly! 73, Bill K9YEQ https://wrj-tech.com/ -----Original Message----- From: Bob McGraw K4TAX Sent: Friday, January 18, 2019 4:21 PM To: Bill Johnson ; elecraft at mailman.qth.net Subject: Re: [Elecraft] KPA500 external mains switch Bill: That is my general objective.?? Having surge protector strips all over the house has not proven worthwhile.? On the other hand, the installation of whole house surge protection has proven to be much more successful.? This also takes care of switching transits cause by load balancing by the power company. As to protection for lightning, that's a totally different approach and methodology.? Lightning rods installed on the house, all ground rods bonded together, copper plumbing to ground system, all services {phone, cable, TV antenna, satellite dish and etc} connected to the bonded ground system. Still if there is a direct strike, as we have received, get ready to repair and replace some stuff.? Hopefully, the house is still standing. 73 Bob, K4TAX On 1/18/2019 3:43 PM, Bill Johnson wrote: > Bob, totally agree and this is exactly what I have. Main breaker box, whole house protection. Lightning is, of course, a whole different conversation when it comes to direct hits. Line spikes can wear out motors, take out weak power supplies, etc., which the suppressor will protect. > > 73, > Bill > K9YEQ > > https://wrj-tech.com/ > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net > On Behalf Of Bob McGraw K4TAX > Sent: Friday, January 18, 2019 10:30 AM > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] KPA500 external mains switch > > I have a whole house surge protector installed at the Mains breaker panel.? Thus I find no need to have individual surge protection for any of the equipment locations in the QTH.?? This takes care of microwave, range, furnace, washer, radios, TV's, entertainment systems, phone system and such. > > Not sure I like or agree with the idea of a separate mains switch.? If for remote purposes, remember when turning off the amp via the front power switch, one must allow the voltage to bleed down before shutting off the main power switch on the rear.? {Per the manual}? This would seem to be true with an external switch. > > I've assisted many hams with issue resolution only to find out they have and use a "big switch" or otherwise to shut down the station.? This IS NOT a good idea as many/most microprocessor circuits have provision to save data before shutting down equipment.? Thus if one uses a "big switch" it kills the DC source thus the processor does not have the opportunity to save the data status.?? As to what's left......., sometimes scrambled data, and that's where the issues arise. > > 73 > > Bob, K4TAX > > > On 1/18/2019 10:11 AM, Macy monkeys wrote: >> Is anyone in the US using a separate 220v external mains switch on their KPA500? I'm wondering where these are available. Or is anyone using a 220 v surge protector? Are these available for the NEMA 6-15 plug? >> >> John K7FD >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net Please help support this >> email >> list: http://www.qsl.net/donate.html Message delivered to >> rmcgraw at blomand.net >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to > k9yeq at live.com From rmcgraw at blomand.net Fri Jan 18 18:15:15 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Fri, 18 Jan 2019 17:15:15 -0600 Subject: [Elecraft] WSJT-X Frequency Anomaly In-Reply-To: References: <8c2f8823-fe0a-b691-2cf7-0e12732709cd@gmail.com> <5461e0e6-aa70-871e-f67d-8502dfa7702a@embarqmail.com> Message-ID: <5C23F8B4-FB07-4F37-AB38-BA3F6523003B@blomand.net> One easy method is place the radio on the CW mode. Time to one of the WWV frequencies. Press the SPOT to activate the function. Any difference between the WWV frequency and the readout is the error. Bob, K4TAX Sent from my iPhone > On Jan 18, 2019, at 4:42 PM, Mike Harris via Elecraft wrote: > > Do a sanity check by listening to WWV. That will tell you if your various radios are telling frequency lies or not. > > The thing to be aware of is that the reference oscillators in the respective radios will drift. There is a method using WWV in the K3 manual to check and adjust the REF CAL error. > > Regards, > > Mike VP8NO > >> On 18/01/2019 18:23, Don Wilhelm wrote: >> Note that in the two cases mentioned, you reported 47 +/-1 Hz difference. >> That is not much and can easily be attributed to a difference in the calibration of the radio or the audio frequency accuracy of the soundcards. >> 73, >> Don W3FPR >>> On 1/18/2019 12:07 PM, Rick WA6NHC wrote: >>>> On 1/18/2019 8:54 AM, Richard wrote: >>>> After working a friend on 10 meters with FT8 I phoned and asked him why he always stayed up high at 2454 Hz. He said WSJT-X said he was dead on 2500 Hz. >>>> >>>> I asked him what it said my frequency was. He said it was 1048 Hz; my WSJT-X said I was dead on 1000 Hz. We did more testing at other frequencies and on other bands and found similar discrepancies. >>>> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to mike.harris at horizon.co.fk > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From donwilh at embarqmail.com Fri Jan 18 18:40:58 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Fri, 18 Jan 2019 18:40:58 -0500 Subject: [Elecraft] WSJT-X Frequency Anomaly In-Reply-To: <5C23F8B4-FB07-4F37-AB38-BA3F6523003B@blomand.net> References: <8c2f8823-fe0a-b691-2cf7-0e12732709cd@gmail.com> <5461e0e6-aa70-871e-f67d-8502dfa7702a@embarqmail.com> <5C23F8B4-FB07-4F37-AB38-BA3F6523003B@blomand.net> Message-ID: <638b4625-3204-d5ca-8a9f-d4bbd74eaf9b@embarqmail.com> One subtle point is to make certain in CW mode that you have tuned WWV to the carrier frequency and not to one of the transmitted tones. You also must tune to the audio pitch you have set for your sidetone. That is why SPOT is so important. Listen for the WOW-WOW-WOW of the beat note between WWV and your SPOT frequency. Tune the VFO until the WOW-WOW-WOW slows to a stop if possible - then look at the frequency. If it does not have a string of zeros to the right side, adjust the K3 Reference Oscillator as indicated in the manual Calibration Procedures - Use Method 2. I mention this because I have encountered many hams who do not know what zero-beat is. 73, Don W3FPR On 1/18/2019 6:15 PM, Bob McGraw K4TAX wrote: > One easy method is place the radio on the CW mode. Time to one of the WWV frequencies. Press the SPOT to activate the function. Any difference between the WWV frequency and the readout is the error. > > Bob, K4TAX From w5sv.dave at gmail.com Fri Jan 18 19:22:47 2019 From: w5sv.dave at gmail.com (David F. Reed) Date: Fri, 18 Jan 2019 18:22:47 -0600 Subject: [Elecraft] K3-0 mini microcode? Message-ID: A few questions about the k3-0 mini microcode... 1. Does the K3-0 use the same microcode as the K3? 2. are we supposed to keep it in sync with microcode releases? 3. Do the K3-0 and the K3 need to be running the same release? Thanks & 73 de Dave, W5SV From ny9h at arrl.net Fri Jan 18 19:36:24 2019 From: ny9h at arrl.net (Bill Steffey) Date: Fri, 18 Jan 2019 19:36:24 -0500 Subject: [Elecraft] thinning out the herd...... Message-ID: FINALLY SELLING SOME OF MY STUFF DUE TO TOO MUCH STUFF I have 2 K3 radios. I do not need 2. ELECRAFT STATION K3 #44 ... KRX3 DUAL RECEIVERS ... TWO NEW SYNTHESIZERS...( 20DB QUIETER XMIT & RCV ) 100 WATT KPA3 AMP MODULE.... 10-1 ANTENNA MATCHING TUNER KAT3.... DVR INSTALLED...NEW DSP UPGD...AUX DSP......KIO3A I/O......MODIFIED AUDIO STAGE... GOLD PINS....ALC MOD....PWR METER....EXTREME SIGNAL PROTECTION....LPA SINKS EXTRA FILTERS IN MAIN RECEIVER... ALL UPDATES COMPLETED & VERIFIED , MEET ALL SPECS AT FACTORY NO SMOKING ...KEPT IN TEMPERATURE CONTROLLED CABINET 2600 $ SHIPPED still have kx3 kx2 k2 and the other k3/p3 From alorona at sbcglobal.net Fri Jan 18 21:08:19 2019 From: alorona at sbcglobal.net (Al Lorona) Date: Sat, 19 Jan 2019 02:08:19 +0000 (UTC) Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <05B5F37B-0660-4926-A31F-63F8039727C3@wunderwood.org> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> <05B5F37B-0660-4926-A31F-63F8039727C3@wunderwood.org> Message-ID: <9989355.131693.1547863699373@mail.yahoo.com> G3TXQ's work here is awesome, as is N7WS's before him. I'm thinking two things: Thing 1 is that, clearly, water really messes up window line's loss. However, I'm guessing that a/ in a place like southern California, where perpetual drought is the new normal; and b/ in an installation where the window line, rather than running perfectly horizontally so water can pool, has a slant, allowing it to shed water; a ham would probably be fine using it. All one would have to do to discourage pooling on a horizontal run is twist the line once every few meters. Thing 2 is that G3TXQ shows matched loss at 6.72 MHz in heavy rainfall increasing from 0.2 to 1.1 dB per 100 feet, which seems totally acceptable for worst-case rainfall. In moderate rainfall the loss increased to only 0.34 dB/100 ft. That's lower than any coax out there. I myself would never use it (for reasons other than water loss), but window line seems like an okay choice for those hams who can't or won't use coax. Al? W6LX ? Glossary: "Window line" = Wireman 551 or 552 or equivalent >>> http://www.karinya.net/g3txq/wet_ll/ From FlatHat at comcast.net Fri Jan 18 21:22:43 2019 From: FlatHat at comcast.net (Richard) Date: Fri, 18 Jan 2019 21:22:43 -0500 Subject: [Elecraft] WSJT-X Frequency Anomaly Message-ID: <7352DC4C-62F7-4775-B701-685CDAC39AAB@comcast.net> To all of you who have jumped in with much wisdom about this phenomenon, thank you. I am collecting all it and carefully going through it. Please keep it coming. Even though I don't think it hinders me from having lots of fun with FT8, my perfectionistic devils want to see what can be done. Cheers. Richard ? W4KBX From n3eta at coastside.net Fri Jan 18 21:28:31 2019 From: n3eta at coastside.net (Ron Genovesi) Date: Fri, 18 Jan 2019 18:28:31 -0800 Subject: [Elecraft] Complete K3S Contester/DX Package For sale Message-ID: Up for sale is my Complete K3S Contester/DX Package includes P3 w SVGA, all factory built. All options and filters factory installed. Include Gen. Coverage receiver, FM bandwidth filter, 2.8 upgrade, 2.1 hz, SSB Filters 400hz & 200hz CW (Identical filters on main and sub) receiver. Also K3/0 Mini control head, KPOD w/ ac Power supply Includes K3S & P3 Book and the Macro programming manual from Fred Cady This complete system is in as new conditions. Manuals are unused. Everything supplied by Elecraft (All cables, Accessories, Manuals, Paperwork, Decals and of course the Hat (Unused) are included in all of the original packaging and boxes. This package was purchased in May of 2018. To be on the safe side I sent the K3S (SN 116XX) back to Elecraft where they went through the alignment and all functions and returned it 10 days ago with ?No problems found?. My investment is $8092 plus $184 for the checkup. I would like $7200 or best offer. Shipping and insurance are included (USA lower 48 states). All paper work available and included. If you are seriously interested, I will email a copy of the detailed invoice from Elecraft. Pictures are available on request, but they?re going to show what look like and is, for all intents and purposes brand new equipment. Approx 20 hours of power-on time. Always covered when not in use from a strictly non smoking environment . Reason for sale: This is way more radio than my meager needs or my old brain can process. Ron Genovesi n3eta at coastside.net 541-761-1103 From rmcgraw at blomand.net Fri Jan 18 21:45:28 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Fri, 18 Jan 2019 20:45:28 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <9989355.131693.1547863699373@mail.yahoo.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> <05B5F37B-0660-4926-A31F-63F8039727C3@wunderwood.org> <9989355.131693.1547863699373@mail.yahoo.com> Message-ID: <2a5eab6a-1554-895e-0cb8-a5c67d6b6ab8@blomand.net> Using matching transformers and my spectrum analyzer with tracking generator, I measured a 100 ft length dry and I measured it wet.?? My measurements indicated the velocity factor changed when wet, i.e. the electrical length of the line changed.? Thus explains to me the reason to "retune" when the line is wet or covered with frost, ice or snow.?? With my tuner, that means I must push a button.? Oh geezzzzz. I agree the loss does increase a wee bit when wet in a horizontal position.? Considering we have less than 100 days with recorded or measured precipitation in my area, it is no big deal. My window line is mostly vertical and that which is horizontal has about 5 twists per 10 ft. ? Still worst case, I find it has less loss than coax and less expensive than coax which has equal or less loss. 73 Bob, K4TAX On 1/18/2019 8:08 PM, Al Lorona wrote: > G3TXQ's work here is awesome, as is N7WS's before him. I'm thinking two things: > > Thing 1 is that, clearly, water really messes up window line's loss. However, I'm guessing that a/ in a place like southern California, where perpetual drought is the new normal; and b/ in an installation where the window line, rather than running perfectly horizontally so water can pool, has a slant, allowing it to shed water; a ham would probably be fine using it. All one would have to do to discourage pooling on a horizontal run is twist the line once every few meters. > > Thing 2 is that G3TXQ shows matched loss at 6.72 MHz in heavy rainfall increasing from 0.2 to 1.1 dB per 100 feet, which seems totally acceptable for worst-case rainfall. In moderate rainfall the loss increased to only 0.34 dB/100 ft. That's lower than any coax out there. > > I myself would never use it (for reasons other than water loss), but window line seems like an okay choice for those hams who can't or won't use coax. > > Al? W6LX > > > Glossary: > > "Window line" = Wireman 551 or 552 or equivalent > > > >>>> http://www.karinya.net/g3txq/wet_ll/ > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From Gary at ka1j.com Fri Jan 18 22:53:16 2019 From: Gary at ka1j.com (Gary Smith) Date: Fri, 18 Jan 2019 22:53:16 -0500 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: <5C41490D.11856.6540B43@Gary.ka1j.com> References: <5C41490D.11856.6540B43@Gary.ka1j.com> Message-ID: <5C429F2C.8198.1FD82EF@Gary.ka1j.com> Folks, I posted this on the WSJT-X reflector but got no replies. Perhaps someone here has the answer. --------------- Using Windows 10... Joy... I have WSJT-X set up to use the K3s USB Audio Codec, input & output. Both are selected as Mono. The codec is selected in the computer. I have found no way to get the K3s to transmit unless the K3s USB codec is set to default device in the computer. If I have another soundcard/option selected in the computer, the K3s will indeed present transmit mode as WSJT-X signals it to do, but there is no RF generated from the K3s. It's Lights on, nobody home. WSJT works fine but also transfers any computer sound to the K3s during transmit. If nothing is playing on the computer and the codec is selected as default, I have no trouble with anything WSJT-X related. This is how I have had to have it working for the last 10 months. However, I recently discovered a youtube was playing on another page and that audio was coming through with my WSJT transmission. This is unacceptable. Bottom line seems to be, I must have the K3s USB codec selected as default in the windows sound control panel or I cannot transmit with WSJT-X. There must be another something I'm missing but I can't seem to find it. Any suggestions? 73, Gary KA1J From plambert at qa.com.au Fri Jan 18 23:02:01 2019 From: plambert at qa.com.au (Peter Lambert) Date: Sat, 19 Jan 2019 14:02:01 +1000 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: <5C429F2C.8198.1FD82EF@Gary.ka1j.com> References: <5C41490D.11856.6540B43@Gary.ka1j.com> <5C429F2C.8198.1FD82EF@Gary.ka1j.com> Message-ID: <018801d4afab$bdebc280$39c34780$@qa.com.au> G'day Gary, This should work : Run WSJT-X Go to the system settings via the cog in the start menu. Click on "System (Display, sound, notifications") Click on "Sound" Scroll down to "Other sound options" and click on "App volume and device preferences". Select WSJT-X from the list of displayed apps and select your USB CODEC for both input and output. Note that I don't use WSJT-X but that's how it's done for everything else. Cheers, Peter VK4JD -----Original Message----- From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Gary Smith Sent: Saturday, 19 January 2019 1:53 PM To: Elecraft at mailman.qth.net Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. Folks, I posted this on the WSJT-X reflector but got no replies. Perhaps someone here has the answer. --------------- Using Windows 10... Joy... I have WSJT-X set up to use the K3s USB Audio Codec, input & output. Both are selected as Mono. The codec is selected in the computer. I have found no way to get the K3s to transmit unless the K3s USB codec is set to default device in the computer. If I have another soundcard/option selected in the computer, the K3s will indeed present transmit mode as WSJT-X signals it to do, but there is no RF generated from the K3s. It's Lights on, nobody home. WSJT works fine but also transfers any computer sound to the K3s during transmit. If nothing is playing on the computer and the codec is selected as default, I have no trouble with anything WSJT-X related. This is how I have had to have it working for the last 10 months. However, I recently discovered a youtube was playing on another page and that audio was coming through with my WSJT transmission. This is unacceptable. Bottom line seems to be, I must have the K3s USB codec selected as default in the windows sound control panel or I cannot transmit with WSJT-X. There must be another something I'm missing but I can't seem to find it. Any suggestions? 73, Gary KA1J ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to plambert at qa.com.au From wunder at wunderwood.org Sat Jan 19 00:56:13 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Fri, 18 Jan 2019 21:56:13 -0800 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <9989355.131693.1547863699373@mail.yahoo.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> <05B5F37B-0660-4926-A31F-63F8039727C3@wunderwood.org> <9989355.131693.1547863699373@mail.yahoo.com> Message-ID: <82E1BCF5-3034-45FF-BABA-CA1587FD0796@wunderwood.org> > On Jan 18, 2019, at 6:08 PM, Al Lorona wrote: > > Thing 1 is that, clearly, water really messes up window line's loss. However, I'm guessing that a/ in a place like southern California, where perpetual drought is the new normal; ... Clean water isn?t a problem. Dirty water is a big problem. When I first moved to the SF Bay area in the early 1980s, I was surprised by the number of power outages, compared to where I grew up in Louisiana with heavy weather. The first light rain would be accompanied by outages. With six or more rainless summer months, dust and grit would accumulate on the power line insulators. The first light rain would create conductive mud and trip breakers. So perpetual drought is just a way to build up more dust on the line. I think we take coaxial cable for granted. It was a brilliant invention and a real gift to people who love radio. Maybe I?ll start celebrating December 8th as Coaxial Cable Day. https://www.wired.com/2009/12/1208coaxial-cable-patent/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) From Gary at ka1j.com Sat Jan 19 01:37:02 2019 From: Gary at ka1j.com (Gary Smith) Date: Sat, 19 Jan 2019 01:37:02 -0500 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: <018801d4afab$bdebc280$39c34780$@qa.com.au> References: <5C41490D.11856.6540B43@Gary.ka1j.com>, <5C429F2C.8198.1FD82EF@Gary.ka1j.com>, <018801d4afab$bdebc280$39c34780$@qa.com.au> Message-ID: <5C42C58E.20673.2936EF1@Gary.ka1j.com> Peter, Absolutely brilliant! I never have seen this windows page or read about it, but it absolutely did the trick. I now have an alternate soundcard selected in windows sound control panel and have WSJT-X configured in App volume and device preferences. I have to experiment to be sure nothing gets out sound-wise from the computer but at first exposure, this looks to be dead on. How many others have not yet discovered this! 73! Gary KA1J > G'day Gary, > > This should work : > > Run WSJT-X > > Go to the system settings via the cog in the start menu. > > Click on "System (Display, sound, notifications") > > Click on "Sound" > > Scroll down to "Other sound options" and click on "App volume and > device preferences". > > Select WSJT-X from the list of displayed apps and select your USB > CODEC for both input and output. > > Note that I don't use WSJT-X but that's how it's done for everything > else. > > Cheers, > Peter VK4JD > > > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net > [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Gary Smith > Sent: Saturday, 19 January 2019 1:53 PM To: Elecraft at mailman.qth.net > Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is > windows default. > > Folks, > > I posted this on the WSJT-X reflector but > got no replies. Perhaps someone here has > the answer. > > --------------- > > Using Windows 10... Joy... > > I have WSJT-X set up to use the K3s USB > Audio Codec, input & output. Both are > selected as Mono. > > The codec is selected in the computer. > > I have found no way to get the K3s to > transmit unless the K3s USB codec is set > to default device in the computer. > > If I have another soundcard/option > selected in the computer, the K3s will > indeed present transmit mode as WSJT-X > signals it to do, but there is no RF > generated from the K3s. It's Lights on, > nobody home. WSJT works fine but also > transfers any computer sound to the K3s > during transmit. > > If nothing is playing on the computer and > the codec is selected as default, I have > no trouble with anything WSJT-X related. > This is how I have had to have it working > for the last 10 months. However, I > recently discovered a youtube was playing > on another page and that audio was coming > through with my WSJT transmission. This is > unacceptable. > > Bottom line seems to be, I must have the > K3s USB codec selected as default in the > windows sound control panel or I cannot > transmit with WSJT-X. > > There must be another something I'm > missing but I can't seem to find it. > > Any suggestions? > > 73, > > Gary > KA1J > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to plambert at qa.com.au > > From trthines at verizon.net Sat Jan 19 05:43:46 2019 From: trthines at verizon.net (Terry Hines) Date: Sat, 19 Jan 2019 05:43:46 -0500 Subject: [Elecraft] FT8 Transmit Problem Message-ID: <000001d4afe3$db39c3e0$91ad4ba0$@verizon.net> I'm having trouble with the I/F between Windows 10 and the USB sound card in my upgraded K3. I've checked and the Sound Card settings in Windows 10 and they are exactly as shown in Chapter 10 of Fred Cady's book. It receives and decodes FT8 perfectly but can't transmit. When I hit the "Tune" button on the WSJT-X screen the red "PTT" light comes on but there is no input signal to the K3 and hence no RF output. What am I doing wrong? Terry N4ZH From rmcgraw at blomand.net Sat Jan 19 09:36:26 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sat, 19 Jan 2019 08:36:26 -0600 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: <5C429F2C.8198.1FD82EF@Gary.ka1j.com> References: <5C41490D.11856.6540B43@Gary.ka1j.com> <5C429F2C.8198.1FD82EF@Gary.ka1j.com> Message-ID: Are you saying the K3S does not go into the transmit mode, or are you saying there is no audio? From the K3S CONFIG menu you should have RS232 set to USB.? The K3S Menu should have MIC SEL set to Line IN.? Is anything plugged into the Line In on the back of the radio??? Unplug it if? so. The radio Data MD should be set to DATA A. With the F2 Setup Menu of WSJT-X? the Radio pane: Data Bits as 8, Stop bit as 1 and Handshake as NONE.?? PTT Method as CAT, Mode as Data/Pkt, Split operation as RIG.??? On the Audio pane:? Soundcard both Input and Output should be USB Audio CODEC and Mono. This is my configuration. 73 Bob, K4TAX On 1/18/2019 9:53 PM, Gary Smith wrote: > Folks, > > I posted this on the WSJT-X reflector but > got no replies. Perhaps someone here has > the answer. > > --------------- > > Using Windows 10... Joy... > > I have WSJT-X set up to use the K3s USB > Audio Codec, input & output. Both are > selected as Mono. > > The codec is selected in the computer. > > I have found no way to get the K3s to > transmit unless the K3s USB codec is set > to default device in the computer. > > If I have another soundcard/option > selected in the computer, the K3s will > indeed present transmit mode as WSJT-X > signals it to do, but there is no RF > generated from the K3s. It's Lights on, > nobody home. WSJT works fine but also > transfers any computer sound to the K3s > during transmit. > > If nothing is playing on the computer and > the codec is selected as default, I have > no trouble with anything WSJT-X related. > This is how I have had to have it working > for the last 10 months. However, I > recently discovered a youtube was playing > on another page and that audio was coming > through with my WSJT transmission. This is > unacceptable. > > Bottom line seems to be, I must have the > K3s USB codec selected as default in the > windows sound control panel or I cannot > transmit with WSJT-X. > > There must be another something I'm > missing but I can't seem to find it. > > Any suggestions? > > 73, > > Gary > KA1J > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From rmcgraw at blomand.net Sat Jan 19 09:45:21 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sat, 19 Jan 2019 08:45:21 -0600 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <82E1BCF5-3034-45FF-BABA-CA1587FD0796@wunderwood.org> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> <05B5F37B-0660-4926-A31F-63F8039727C3@wunderwood.org> <9989355.131693.1547863699373@mail.yahoo.com> <82E1BCF5-3034-45FF-BABA-CA1587FD0796@wunderwood.org> Message-ID: I didn't measure significant increase in loss with clean water i.e. tap water sprayed on the entire length of the line from a hose.? I did make a solution of dish washing detergent and water and , using a spray bottle, sprayed that on the line.? This caused much more water to cling to the line.?? While the loss did not appreciably increase, I did notice the electrical length of the line changed a measurable amount.?? Measurements were made such that the line was operating at its characteristic impedance.? The source was the tracking generator in my Spectrum Analyzer, sweeping 1 MHz to 50 MHz. 73 Bob, K4TAX On 1/18/2019 11:56 PM, Walter Underwood wrote: >> On Jan 18, 2019, at 6:08 PM, Al Lorona wrote: >> >> Thing 1 is that, clearly, water really messes up window line's loss. However, I'm guessing that a/ in a place like southern California, where perpetual drought is the new normal; ... > Clean water isn?t a problem. Dirty water is a big problem. > > When I first moved to the SF Bay area in the early 1980s, I was surprised by the number of power outages, compared to where I grew up in Louisiana with heavy weather. The first light rain would be accompanied by outages. With six or more rainless summer months, dust and grit would accumulate on the power line insulators. The first light rain would create conductive mud and trip breakers. So perpetual drought is just a way to build up more dust on the line. > > I think we take coaxial cable for granted. It was a brilliant invention and a real gift to people who love radio. Maybe I?ll start celebrating December 8th as Coaxial Cable Day. > > https://www.wired.com/2009/12/1208coaxial-cable-patent/ > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From n4zr at comcast.net Sat Jan 19 09:46:34 2019 From: n4zr at comcast.net (N4ZR) Date: Sat, 19 Jan 2019 09:46:34 -0500 Subject: [Elecraft] KPA-1500 ATU BYP light always on Message-ID: Just got my KPA-1500, and it seems to work great except that the ATU BYP light is always illuminated.? The ATU operates normally when I light the IN light with the ATU Mode switch and apply drive.? I can't find anything in the manual about this. Can anyone clarify? -- 73, Pete N4ZR Check out the Reverse Beacon Network at , now spotting RTTY activity worldwide. For spots, please use your favorite "retail" DX cluster. From donwilh at embarqmail.com Sat Jan 19 09:48:02 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sat, 19 Jan 2019 09:48:02 -0500 Subject: [Elecraft] FT8 Transmit Problem In-Reply-To: <000001d4afe3$db39c3e0$91ad4ba0$@verizon.net> References: <000001d4afe3$db39c3e0$91ad4ba0$@verizon.net> Message-ID: <34bafbea-c29b-94c1-3213-eb74fbbe6f96@embarqmail.com> Terry, This sounds like the same problem that Gary Smith was having. Look through the posts of the last two days for subject line "Re: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default." Peter Lambert provided the solution. It is a Windows/WSJT-X setup problem and not a K3/K3S problem. 73, Don W3FPR On 1/19/2019 5:43 AM, Terry Hines wrote: > I'm having trouble with the I/F between Windows 10 and the USB sound card in > my upgraded K3. I've checked and the Sound Card settings in Windows 10 and > they are exactly as shown in Chapter 10 of Fred Cady's book. It receives and > decodes FT8 perfectly but can't transmit. When I hit the "Tune" button on > the WSJT-X screen the red "PTT" light comes on but there is no input signal > to the K3 and hence no RF output. What am I doing wrong? > > Terry N4ZH > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com > From scott at nx7u.net Sat Jan 19 10:05:54 2019 From: scott at nx7u.net (Scott Townley) Date: Sat, 19 Jan 2019 10:05:54 -0500 Subject: [Elecraft] K3/0-mini disassembly Message-ID: I have a K3/0-mini that I removed the rear bail from.? Basically I unscrewed the four screws, cracked open the case just a bit, and shook all the internal hardware (nuts/washers) out, and buttoned it back up. Now I want to put the bail back on.? I've gotten the case fully opened up (two halves), but I'm having a challenge with the PCB that's attached to the rear half.? It appears those four black "nubs" that you can see on the back are some sort of nylon standoff that's being used for stiffening the PCB.? But it's not obvious to me how to remove them or otherwise disengage them.? Of course I'd prefer to do this without destroying them and leaving four holes in the back. Any suggestions? TIA, Scott NX7U -- Scott NX7U From barrylazar2 at gmail.com Sat Jan 19 10:40:59 2019 From: barrylazar2 at gmail.com (Barry) Date: Sat, 19 Jan 2019 15:40:59 +0000 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: References: <5C41490D.11856.6540B43@gary.ka1j.com> <5C429F2C.8198.1FD82EF@gary.ka1j.com> Message-ID: I have a K3s and have never used CAT for PTT fuctions. I found it to hard to set up and think about. I do use VOX for keying the transmitter. I find that works very well and is mindlessly simple to set up. The only thing you need to know is to remember to turn the VOX function on and make sure you have enough audio going in to satisfy the 4 steady bars with a 5th flickering on the ALC indicator. This approach allow me to switch to differing digital software with little need to do further set ups. I suggest that those who are having problems setting up CAT for their radios give this a try and see how well it works. And BTW: I do use FT8 fairly regularly as well as RTTY and PSK31. 73, Barry K3NDM ------ Original Message ------ From: "Bob McGraw K4TAX" To: elecraft at mailman.qth.net Sent: 1/19/2019 9:36:26 AM Subject: Re: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. >Are you saying the K3S does not go into the transmit mode, or are you saying there is no audio? > >From the K3S CONFIG menu you should have RS232 set to USB. The K3S Menu should have MIC SEL set to Line IN. Is anything plugged into the Line In on the back of the radio? Unplug it if so. The radio Data MD should be set to DATA A. > >With the F2 Setup Menu of WSJT-X the Radio pane: Data Bits as 8, Stop bit as 1 and Handshake as NONE. PTT Method as CAT, Mode as Data/Pkt, Split operation as RIG. On the Audio pane: Soundcard both Input and Output should be USB Audio CODEC and Mono. > >This is my configuration. > >73 > >Bob, K4TAX > > >On 1/18/2019 9:53 PM, Gary Smith wrote: >>Folks, >> >>I posted this on the WSJT-X reflector but >>got no replies. Perhaps someone here has >>the answer. >> >>--------------- >> >>Using Windows 10... Joy... >> >>I have WSJT-X set up to use the K3s USB >>Audio Codec, input & output. Both are >>selected as Mono. >> >>The codec is selected in the computer. >> >>I have found no way to get the K3s to >>transmit unless the K3s USB codec is set >>to default device in the computer. >> >>If I have another soundcard/option >>selected in the computer, the K3s will >>indeed present transmit mode as WSJT-X >>signals it to do, but there is no RF >>generated from the K3s. It's Lights on, >>nobody home. WSJT works fine but also >>transfers any computer sound to the K3s >>during transmit. >> >>If nothing is playing on the computer and >>the codec is selected as default, I have >>no trouble with anything WSJT-X related. >>This is how I have had to have it working >>for the last 10 months. However, I >>recently discovered a youtube was playing >>on another page and that audio was coming >>through with my WSJT transmission. This is >>unacceptable. >> >>Bottom line seems to be, I must have the >>K3s USB codec selected as default in the >>windows sound control panel or I cannot >>transmit with WSJT-X. >> >>There must be another something I'm >>missing but I can't seem to find it. >> >>Any suggestions? >> >>73, >> >>Gary >>KA1J >> >> >> >> >>______________________________________________________________ >>Elecraft mailing list >>Home: http://mailman.qth.net/mailman/listinfo/elecraft >>Help: http://mailman.qth.net/mmfaq.htm >>Post: mailto:Elecraft at mailman.qth.net >> >>This list hosted by: http://www.qsl.net >>Please help support this email list: http://www.qsl.net/donate.html >>Message delivered to rmcgraw at blomand.net >> > >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft at mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html >Message delivered to barrylazar2 at gmail.com From k2vco.vic at gmail.com Sat Jan 19 10:45:59 2019 From: k2vco.vic at gmail.com (Victor Rosenthal 4X6GP) Date: Sat, 19 Jan 2019 17:45:59 +0200 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> <05B5F37B-0660-4926-A31F-63F8039727C3@wunderwood.org> <9989355.131693.1547863699373@mail.yahoo.com> <82E1BCF5-3034-45FF-BABA-CA1587FD0796@wunderwood.org> Message-ID: <66448d5a-04a5-2729-0b65-9eea6f358c97@gmail.com> When I used to use ladder line I noticed a significant detuning effect when wet. It was worse with older line, probably because the weathering made the water more likely to stick. I never tried to measure the loss. I tried waxing the line with automotive wax and saw an improvement. But I don't know how long it would have lasted, since I switched to other feedlines. Today I'm using homemade open wire line, no. 12 (2 mm dia) spaced 4.5 inches (11.4 cm). Insulators are cut from black irrigation hose. Wire is ultra flexible type from The Wireman. It works great with no noticeable weather effects. It's very easy to make: I made a jig from a piece of tubing to cut the insulators to the same length. The jig has holes to drill near the ends of the insulators; then I snipped a cut from the edge to the hole to enable the wire to snap in. The holes are just big enough to grip the wire but to let me slip the insulators a bit to get them in the right place. In a few locations I made insulators out of fiberglass that could be attached to brackets to hold the line in place. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 19 Jan 2019 16:45, Bob McGraw K4TAX wrote: > I didn't measure significant increase in loss with clean water i.e. tap > water sprayed on the entire length of the line from a hose.? I did make > a solution of dish washing detergent and water and , using a spray > bottle, sprayed that on the line.? This caused much more water to cling > to the line.?? While the loss did not appreciably increase, I did notice > the electrical length of the line changed a measurable amount. > Measurements were made such that the line was operating at its > characteristic impedance.? The source was the tracking generator in my > Spectrum Analyzer, sweeping 1 MHz to 50 MHz. > > 73 > > Bob, K4TAX > > > On 1/18/2019 11:56 PM, Walter Underwood wrote: >>> On Jan 18, 2019, at 6:08 PM, Al Lorona wrote: >>> >>> Thing 1 is that, clearly, water really messes up window line's loss. >>> However, I'm guessing that a/ in a place like southern California, >>> where perpetual drought is the new normal; ... >> Clean water isn?t a problem. Dirty water is a big problem. >> >> When I first moved to the SF Bay area in the early 1980s, I was >> surprised by the number of power outages, compared to where I grew up >> in Louisiana with heavy weather. The first light rain would be >> accompanied by outages. With six or more rainless summer months, dust >> and grit would accumulate on the power line insulators. The first >> light rain would create conductive mud and trip breakers. So perpetual >> drought is just a way to build up more dust on the line. >> >> I think we take coaxial cable for granted. It was a brilliant >> invention and a real gift to people who love radio. Maybe I?ll start >> celebrating December 8th as Coaxial Cable Day. >> >> https://www.wired.com/2009/12/1208coaxial-cable-patent/ >> >> wunder >> K6WRU >> Walter Underwood >> CM87wj >> http://observer.wunderwood.org/ (my blog) >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to rmcgraw at blomand.net > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k2vco.vic at gmail.com From rmcgraw at blomand.net Sat Jan 19 10:48:08 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sat, 19 Jan 2019 09:48:08 -0600 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: References: <5C41490D.11856.6540B43@gary.ka1j.com> <5C429F2C.8198.1FD82EF@gary.ka1j.com> Message-ID: <105D118E-DC61-49D8-8F09-ED93475FCCF7@blomand.net> I use VOX for my SSB operating. Thus if I were to use it for digital modes I would need to change the settings. And then set it back for SSB. With CAT that is set in the software as I outlined. Set it and forget it. Bob, K4TAX Sent from my iPhone > On Jan 19, 2019, at 9:40 AM, Barry wrote: > > I have a K3s and have never used CAT for PTT fuctions. I found it to hard to set up and think about. I do use VOX for keying the transmitter. I find that works very well and is mindlessly simple to set up. The only thing you need to know is to remember to turn the VOX function on and make sure you have enough audio going in to satisfy the 4 steady bars with a 5th flickering on the ALC indicator. This approach allow me to switch to differing digital software with little need to do further set ups. I suggest that those who are having problems setting up CAT for their radios give this a try and see how well it works. And BTW: I do use FT8 fairly regularly as well as RTTY and PSK31. > > 73, > Barry > K3NDM > > ------ Original Message ------ > From: "Bob McGraw K4TAX" > To: elecraft at mailman.qth.net > Sent: 1/19/2019 9:36:26 AM > Subject: Re: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. > >> Are you saying the K3S does not go into the transmit mode, or are you saying there is no audio? >> >> From the K3S CONFIG menu you should have RS232 set to USB. The K3S Menu should have MIC SEL set to Line IN. Is anything plugged into the Line In on the back of the radio? Unplug it if so. The radio Data MD should be set to DATA A. >> >> With the F2 Setup Menu of WSJT-X the Radio pane: Data Bits as 8, Stop bit as 1 and Handshake as NONE. PTT Method as CAT, Mode as Data/Pkt, Split operation as RIG. On the Audio pane: Soundcard both Input and Output should be USB Audio CODEC and Mono. >> >> This is my configuration. >> >> 73 >> >> Bob, K4TAX >> >> >>> On 1/18/2019 9:53 PM, Gary Smith wrote: >>> Folks, >>> >>> I posted this on the WSJT-X reflector but >>> got no replies. Perhaps someone here has >>> the answer. >>> >>> --------------- >>> >>> Using Windows 10... Joy... >>> >>> I have WSJT-X set up to use the K3s USB >>> Audio Codec, input & output. Both are >>> selected as Mono. >>> >>> The codec is selected in the computer. >>> >>> I have found no way to get the K3s to >>> transmit unless the K3s USB codec is set >>> to default device in the computer. >>> >>> If I have another soundcard/option >>> selected in the computer, the K3s will >>> indeed present transmit mode as WSJT-X >>> signals it to do, but there is no RF >>> generated from the K3s. It's Lights on, >>> nobody home. WSJT works fine but also >>> transfers any computer sound to the K3s >>> during transmit. >>> >>> If nothing is playing on the computer and >>> the codec is selected as default, I have >>> no trouble with anything WSJT-X related. >>> This is how I have had to have it working >>> for the last 10 months. However, I >>> recently discovered a youtube was playing >>> on another page and that audio was coming >>> through with my WSJT transmission. This is >>> unacceptable. >>> >>> Bottom line seems to be, I must have the >>> K3s USB codec selected as default in the >>> windows sound control panel or I cannot >>> transmit with WSJT-X. >>> >>> There must be another something I'm >>> missing but I can't seem to find it. >>> >>> Any suggestions? >>> >>> 73, >>> >>> Gary >>> KA1J >>> >>> >>> >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to rmcgraw at blomand.net >>> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to barrylazar2 at gmail.com > > From ki4txp at gmail.com Sat Jan 19 10:48:41 2019 From: ki4txp at gmail.com (JAY) Date: Sat, 19 Jan 2019 10:48:41 -0500 Subject: [Elecraft] WSPR set up Message-ID: I am trying to set up WSPR and having trouble in transmit. Receive is fine. I have set the TX to the recommend freq, I have tried different power settings. When the radio goes into TX mode I get a steady tone for the duration of the TX. The LDG 1000pro show 10W out but now swr shows on scale. Thanks for any advise. -- 73 KI4TXP JAY From barrylazar2 at gmail.com Sat Jan 19 11:01:43 2019 From: barrylazar2 at gmail.com (Barry) Date: Sat, 19 Jan 2019 16:01:43 +0000 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: <105D118E-DC61-49D8-8F09-ED93475FCCF7@blomand.net> References: <5C41490D.11856.6540B43@gary.ka1j.com> <5C429F2C.8198.1FD82EF@gary.ka1j.com> <105D118E-DC61-49D8-8F09-ED93475FCCF7@blomand.net> Message-ID: Hmmmm, Bob, I haven't looked to see how much difference there is between the two settings; I don't use VOX for SSB. I guess I probably should have a look, though. I hadn't thought of this issue because of the way I operate. Good catch. 73, Barry K3NDM ------ Original Message ------ From: "Bob McGraw K4TAX" To: "Barry" Cc: elecraft at mailman.qth.net Sent: 1/19/2019 10:48:08 AM Subject: Re: Re[2]: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. >I use VOX for my SSB operating. Thus if I were to use it for digital modes I would need to change the settings. And then set it back for SSB. With CAT that is set in the software as I outlined. Set it and forget it. > >Bob, K4TAX > > >Sent from my iPhone > >> On Jan 19, 2019, at 9:40 AM, Barry wrote: >> >> I have a K3s and have never used CAT for PTT fuctions. I found it to hard to set up and think about. I do use VOX for keying the transmitter. I find that works very well and is mindlessly simple to set up. The only thing you need to know is to remember to turn the VOX function on and make sure you have enough audio going in to satisfy the 4 steady bars with a 5th flickering on the ALC indicator. This approach allow me to switch to differing digital software with little need to do further set ups. I suggest that those who are having problems setting up CAT for their radios give this a try and see how well it works. And BTW: I do use FT8 fairly regularly as well as RTTY and PSK31. >> >> 73, >> Barry >> K3NDM >> >> ------ Original Message ------ >> From: "Bob McGraw K4TAX" >> To: elecraft at mailman.qth.net >> Sent: 1/19/2019 9:36:26 AM >> Subject: Re: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. >> >>> Are you saying the K3S does not go into the transmit mode, or are you saying there is no audio? >>> >>> From the K3S CONFIG menu you should have RS232 set to USB. The K3S Menu should have MIC SEL set to Line IN. Is anything plugged into the Line In on the back of the radio? Unplug it if so. The radio Data MD should be set to DATA A. >>> >>> With the F2 Setup Menu of WSJT-X the Radio pane: Data Bits as 8, Stop bit as 1 and Handshake as NONE. PTT Method as CAT, Mode as Data/Pkt, Split operation as RIG. On the Audio pane: Soundcard both Input and Output should be USB Audio CODEC and Mono. >>> >>> This is my configuration. >>> >>> 73 >>> >>> Bob, K4TAX >>> >>> >>>> On 1/18/2019 9:53 PM, Gary Smith wrote: >>>> Folks, >>>> >>>> I posted this on the WSJT-X reflector but >>>> got no replies. Perhaps someone here has >>>> the answer. >>>> >>>> --------------- >>>> >>>> Using Windows 10... Joy... >>>> >>>> I have WSJT-X set up to use the K3s USB >>>> Audio Codec, input & output. Both are >>>> selected as Mono. >>>> >>>> The codec is selected in the computer. >>>> >>>> I have found no way to get the K3s to >>>> transmit unless the K3s USB codec is set >>>> to default device in the computer. >>>> >>>> If I have another soundcard/option >>>> selected in the computer, the K3s will >>>> indeed present transmit mode as WSJT-X >>>> signals it to do, but there is no RF >>>> generated from the K3s. It's Lights on, >>>> nobody home. WSJT works fine but also >>>> transfers any computer sound to the K3s >>>> during transmit. >>>> >>>> If nothing is playing on the computer and >>>> the codec is selected as default, I have >>>> no trouble with anything WSJT-X related. >>>> This is how I have had to have it working >>>> for the last 10 months. However, I >>>> recently discovered a youtube was playing >>>> on another page and that audio was coming >>>> through with my WSJT transmission. This is >>>> unacceptable. >>>> >>>> Bottom line seems to be, I must have the >>>> K3s USB codec selected as default in the >>>> windows sound control panel or I cannot >>>> transmit with WSJT-X. >>>> >>>> There must be another something I'm >>>> missing but I can't seem to find it. >>>> >>>> Any suggestions? >>>> >>>> 73, >>>> >>>> Gary >>>> KA1J >>>> >>>> >>>> >>>> >>>> ______________________________________________________________ >>>> Elecraft mailing list >>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>>> Help: http://mailman.qth.net/mmfaq.htm >>>> Post: mailto:Elecraft at mailman.qth.net >>>> >>>> This list hosted by: http://www.qsl.net >>>> Please help support this email list: http://www.qsl.net/donate.html >>>> Message delivered to rmcgraw at blomand.net >>>> >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to barrylazar2 at gmail.com >> >> > > From wes_n7ws at triconet.org Sat Jan 19 11:03:08 2019 From: wes_n7ws at triconet.org (Wes Stewart) Date: Sat, 19 Jan 2019 09:03:08 -0700 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: <105D118E-DC61-49D8-8F09-ED93475FCCF7@blomand.net> References: <5C41490D.11856.6540B43@gary.ka1j.com> <5C429F2C.8198.1FD82EF@gary.ka1j.com> <105D118E-DC61-49D8-8F09-ED93475FCCF7@blomand.net> Message-ID: <34d41fca-ec8f-c4dc-96d4-79de1d2e38f2@triconet.org> That is why I've begged several times for a firmware change to make VOX gain saved per mode. ?I do use VOX on RTTY and SSB and with a lot of fussing with soundcard levels have it more-or-less set so all modes use about the same VOX gain.? Unfortunately, IMHO anyway, I think VOX gain should be independent of mic gain but it isn't. Wes? N7WS On 1/19/2019 8:48 AM, Bob McGraw K4TAX wrote: > I use VOX for my SSB operating. Thus if I were to use it for digital modes I would need to change the settings. And then set it back for SSB. With CAT that is set in the software as I outlined. Set it and forget it. > > Bob, K4TAX > > > Sent from my iPhone > >> On Jan 19, 2019, at 9:40 AM, Barry wrote: >> >> I have a K3s and have never used CAT for PTT fuctions. I found it to hard to set up and think about. I do use VOX for keying the transmitter. I find that works very well and is mindlessly simple to set up. The only thing you need to know is to remember to turn the VOX function on and make sure you have enough audio going in to satisfy the 4 steady bars with a 5th flickering on the ALC indicator. This approach allow me to switch to differing digital software with little need to do further set ups. I suggest that those who are having problems setting up CAT for their radios give this a try and see how well it works. And BTW: I do use FT8 fairly regularly as well as RTTY and PSK31. >> >> 73, >> Barry >> K3NDM >> From joseph.durnal at gmail.com Sat Jan 19 11:09:34 2019 From: joseph.durnal at gmail.com (Joseph M. Durnal) Date: Sat, 19 Jan 2019 11:09:34 -0500 Subject: [Elecraft] FT8 Transmit Problem In-Reply-To: <000001d4afe3$db39c3e0$91ad4ba0$@verizon.net> References: <000001d4afe3$db39c3e0$91ad4ba0$@verizon.net> Message-ID: I spent more time than I would like to admit trying to figure out why there was no output when trying to transmit digital modes from the internal sound card. It was the line gain (mic gain), it defaulted to 0 after installing the KIO3B. 73 de Joseph M. Durnal - NE3R On Sat, Jan 19, 2019 at 5:44 AM Terry Hines wrote: > I'm having trouble with the I/F between Windows 10 and the USB sound card > in > my upgraded K3. I've checked and the Sound Card settings in Windows 10 and > they are exactly as shown in Chapter 10 of Fred Cady's book. It receives > and > decodes FT8 perfectly but can't transmit. When I hit the "Tune" button on > the WSJT-X screen the red "PTT" light comes on but there is no input signal > to the K3 and hence no RF output. What am I doing wrong? > > Terry N4ZH > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to joseph.durnal at gmail.com > From k6xk at ncn.net Sat Jan 19 11:33:28 2019 From: k6xk at ncn.net (Roy Koeppe) Date: Sat, 19 Jan 2019 10:33:28 -0600 Subject: [Elecraft] KPA-1500 ATU BYP light always on In-Reply-To: References: Message-ID: <82DD7194F9D847EDA414444F6D947531@ROYKOEPPEHP> About: "Just got my KPA-1500, and it seems to work great except that the ATU BYP light is always illuminated. The ATU operates normally when I light the IN light with the ATU Mode switch and apply drive. I can't find anything in the manual about this." Can anyone clarify? 73, Pete N4ZR Mine has that defect too Pete; serial number is 160 and I suspect yours is not brand new? Hope to hear from others here. I understand the factory has several update mods available for 'older' amps. So far I have simply ignored the funny behavior of the stuck LED. Mine has this issue ONLY on 40 meters. 73, Roy K6XK From markmusick at outlook.com Sat Jan 19 13:08:39 2019 From: markmusick at outlook.com (Mark Musick) Date: Sat, 19 Jan 2019 18:08:39 +0000 Subject: [Elecraft] KPA-1500 ATU BYP light always on In-Reply-To: <82DD7194F9D847EDA414444F6D947531@ROYKOEPPEHP> References: <82DD7194F9D847EDA414444F6D947531@ROYKOEPPEHP> Message-ID: This is not a defect. It is operating as designed. I had this same question after receiving my KPA1500 serial #112 in April of last year. My understanding after talking to Eric at Dayton last May is both LEDs light when the ATU is engaged (set to IN) and the ATU determines the bypass SWR is at or below the threshold SWR the ATU goes to bypass. Having both LEDs on tells you the ATU is IN, but is BYPASSED. If you move to another band segment where the SWR is above the threshold SWR the ATU tunes for lowest SWR, the IN LED stays on and the BYPASS LED goes out. This is exactly how mine works. I hope all that is clear as mud. If someone else has a better way of explaining it, I would like to see it. 73, Mark, WB9CIF -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Roy Koeppe Sent: Saturday, January 19, 2019 16:33 To: Elecraft List Subject: Re: [Elecraft] KPA-1500 ATU BYP light always on About: "Just got my KPA-1500, and it seems to work great except that the ATU BYP light is always illuminated. The ATU operates normally when I light the IN light with the ATU Mode switch and apply drive. I can't find anything in the manual about this." Can anyone clarify? 73, Pete N4ZR Mine has that defect too Pete; serial number is 160 and I suspect yours is not brand new? Hope to hear from others here. I understand the factory has several update mods available for 'older' amps. So far I have simply ignored the funny behavior of the stuck LED. Mine has this issue ONLY on 40 meters. 73, Roy K6XK ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to markmusick at outlook.com From norrislawfirm2 at gmail.com Sat Jan 19 13:10:15 2019 From: norrislawfirm2 at gmail.com (Eric Norris) Date: Sat, 19 Jan 2019 10:10:15 -0800 Subject: [Elecraft] KPA-1500 ATU BYP light always on In-Reply-To: <82DD7194F9D847EDA414444F6D947531@ROYKOEPPEHP> References: <82DD7194F9D847EDA414444F6D947531@ROYKOEPPEHP> Message-ID: First, make sure you have the latest firmware, 2.0, loaded in the KPA1500. Secondly--no offense intended--what is the bypass SWR of the antenna? If it is lower than the tuning threshold set in the KPA1500 utility, the KPA1500 ATU will stay in BYPASS mode even after a tuning cycle when the ATU is IN. 73 Eric WD6DBM On Sat, Jan 19, 2019, 8:33 AM Roy Koeppe About: > > > Just got my KPA-1500, and it seems to work great except that the ATU BYP > light is always illuminated. The ATU operates normally when I light the > IN light with the ATU Mode switch and apply drive. I can't find > anything in the manual about this. > From rmcgraw at blomand.net Sat Jan 19 14:04:33 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sat, 19 Jan 2019 13:04:33 -0600 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: References: <5C41490D.11856.6540B43@gary.ka1j.com> <5C429F2C.8198.1FD82EF@gary.ka1j.com> Message-ID: <60364ece-aca4-6212-9402-2248e1bd05d1@blomand.net> Yes CAT can be somewhat confusing IF........you are running multiple applications at the same time.?? Otherwise, I use CAT for: WSJT-X, FLDIGI, HRD/DM780, MMTTY and have zero issues with any of the applications or levels or commands.?? And all were easy to configure and are reliable.? When I load and open the application, the radio follows just as one would expect.? Now that I find simple. 73 Bob, K4TAX On 1/19/2019 9:40 AM, Barry wrote: > I have a K3s and have never used CAT for PTT fuctions. I found it to > hard to set up and think about. I do use VOX for keying the > transmitter. I find that works very well and is mindlessly simple to > set up. The only thing you need to know is to remember to turn the VOX > function on and make sure you have enough audio going in to satisfy > the 4 steady bars with a 5th flickering on the ALC indicator. This > approach allow me to switch to differing digital software with little > need to do further set ups. I suggest that those who are having > problems setting up CAT for their radios give this a try and see how > well it works. And BTW: I do use FT8 fairly regularly as well as RTTY > and PSK31. > > 73, > Barry > K3NDM > From heinz.baertschi at bluewin.ch Sat Jan 19 14:23:20 2019 From: heinz.baertschi at bluewin.ch (Heinz Baertschi) Date: Sat, 19 Jan 2019 12:23:20 -0700 (MST) Subject: [Elecraft] [K2] T-R Driver Circuit to key KXPA100 Message-ID: <1547925800716-0.post@n2.nabble.com> What kind of T-R keying circuit is necessary in the K2 (with K60XV installed for 60m band usage, no XVTRs connected) to operate the KXPA100 amplifier? a) Will the XVTR Keyline on K60XV J2-2 / Q3 (2N7000) do it correctly? b) Is a keying circuit like these necessary? http://folk.uio.no/sverre/LA3ZA/blog/K2/N0SS/k2_t-r_rly_drvr.pdf ftp://ftp.elecraft.com/K2/Mod%20Notes%20Alerts/K2%20Amplifier%20Keying%20Circuit.pdf 73 tks, Heinz HB9BCB -- Sent from: http://elecraft.365791.n2.nabble.com/ From donwilh at embarqmail.com Sat Jan 19 14:43:48 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sat, 19 Jan 2019 14:43:48 -0500 Subject: [Elecraft] [K2] T-R Driver Circuit to key KXPA100 In-Reply-To: <1547925800716-0.post@n2.nabble.com> References: <1547925800716-0.post@n2.nabble.com> Message-ID: <624aecd6-fddc-05ca-6832-8c7a08dbcaa9@embarqmail.com> Heinz, If you have the K60XV option installed in the K2, yes K60XV J2 pin 2 will key an amplifier like the KXPA100. The only difficult part is to find a place for a connector on the rear panel. There is a place near the key jack where you can mount an RCA jack and not interfere with any components on the RF board - keep the jack as close to the top of the lower panel as possible. 73, Don W3FPR On 1/19/2019 2:23 PM, Heinz Baertschi wrote: > > What kind of T-R keying circuit is necessary in the K2 (with K60XV installed > for 60m band usage, no XVTRs connected) to operate the KXPA100 amplifier? > > a) Will the XVTR Keyline on K60XV J2-2 / Q3 (2N7000) do it correctly? > > b) Is a keying circuit like these necessary? > http://folk.uio.no/sverre/LA3ZA/blog/K2/N0SS/k2_t-r_rly_drvr.pdf > ftp://ftp.elecraft.com/K2/Mod%20Notes%20Alerts/K2%20Amplifier%20Keying%20Circuit.pdf > From n3eta at coastside.net Sat Jan 19 14:51:42 2019 From: n3eta at coastside.net (Ron Genovesi) Date: Sat, 19 Jan 2019 11:51:42 -0800 Subject: [Elecraft] K3S Contester/DX package is sold Message-ID: <72451A13-EDBC-4B8C-8AFA-C86FD3BB2F5D@coastside.net> The K3S Contester/DX package is sold. Thanks you all Ron Genovesi n3eta at coastside.net From a.durbin at msn.com Sat Jan 19 15:01:49 2019 From: a.durbin at msn.com (Andy Durbin) Date: Sat, 19 Jan 2019 20:01:49 +0000 Subject: [Elecraft] KPA-1500 ATU BYP light always on Message-ID: "If someone else has a better way of explaining it, I would like to see it." Don't have a KPA1500 but I do have a KAT500. For that tuner there is a clear distinction between being in BYPASS mode, and not being in BYPASS mode but having the ATU relays in the bypassed position. The bypass relay positions are the same for both but the states are operationally different. I very seldom select BYPASS mode but I am often bypassed. For the KAT500 the state difference can be seen with the utility and by inspection of the serial data (MD and BYP) but the front panel only indicates BYPASS mode. There is no panel indication that the tuner is bypassed when AUTO or MAN modes are active. It appears the KPA1500 indicates the difference on the panel. Andy, k3wyc From markmusick at outlook.com Sat Jan 19 15:07:07 2019 From: markmusick at outlook.com (Mark Musick) Date: Sat, 19 Jan 2019 20:07:07 +0000 Subject: [Elecraft] [K2] T-R Driver Circuit to key KXPA100 In-Reply-To: <624aecd6-fddc-05ca-6832-8c7a08dbcaa9@embarqmail.com> References: <1547925800716-0.post@n2.nabble.com> <624aecd6-fddc-05ca-6832-8c7a08dbcaa9@embarqmail.com> Message-ID: Heinz, This is exactly how Don wired my K2 to key an external amp. The RCA jack is mounted as Don describes. It works. What more is there to say? I forget what the voltage and current ratings are for the 2N7000, but as I remember it will key the majority of amplifiers. 73, Mark, WB9CIF -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Don Wilhelm Sent: Saturday, January 19, 2019 19:44 To: Heinz Baertschi ; elecraft at mailman.qth.net Subject: Re: [Elecraft] [K2] T-R Driver Circuit to key KXPA100 Heinz, If you have the K60XV option installed in the K2, yes K60XV J2 pin 2 will key an amplifier like the KXPA100. The only difficult part is to find a place for a connector on the rear panel. There is a place near the key jack where you can mount an RCA jack and not interfere with any components on the RF board - keep the jack as close to the top of the lower panel as possible. 73, Don W3FPR On 1/19/2019 2:23 PM, Heinz Baertschi wrote: > > What kind of T-R keying circuit is necessary in the K2 (with K60XV installed > for 60m band usage, no XVTRs connected) to operate the KXPA100 amplifier? > > a) Will the XVTR Keyline on K60XV J2-2 / Q3 (2N7000) do it correctly? > > b) Is a keying circuit like these necessary? > http://folk.uio.no/sverre/LA3ZA/blog/K2/N0SS/k2_t-r_rly_drvr.pdf > ftp://ftp.elecraft.com/K2/Mod%20Notes%20Alerts/K2%20Amplifier%20Keying%20Circuit.pdf > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to markmusick at outlook.com From k9yeq at live.com Sat Jan 19 15:25:15 2019 From: k9yeq at live.com (Bill Johnson) Date: Sat, 19 Jan 2019 20:25:15 +0000 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <9989355.131693.1547863699373@mail.yahoo.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> <05B5F37B-0660-4926-A31F-63F8039727C3@wunderwood.org> <9989355.131693.1547863699373@mail.yahoo.com> Message-ID: You can buy spacers for #14 insulated house wire that would also work wonders and be a cheaper but best solution. 73, Bill K9YEQ https://wrj-tech.com/ -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Al Lorona Sent: Friday, January 18, 2019 8:08 PM To: Elecraft Subject: Re: [Elecraft] KAT 500 and open wire G3TXQ's work here is awesome, as is N7WS's before him. I'm thinking two things: Thing 1 is that, clearly, water really messes up window line's loss. However, I'm guessing that a/ in a place like southern California, where perpetual drought is the new normal; and b/ in an installation where the window line, rather than running perfectly horizontally so water can pool, has a slant, allowing it to shed water; a ham would probably be fine using it. All one would have to do to discourage pooling on a horizontal run is twist the line once every few meters. Thing 2 is that G3TXQ shows matched loss at 6.72 MHz in heavy rainfall increasing from 0.2 to 1.1 dB per 100 feet, which seems totally acceptable for worst-case rainfall. In moderate rainfall the loss increased to only 0.34 dB/100 ft. That's lower than any coax out there. I myself would never use it (for reasons other than water loss), but window line seems like an okay choice for those hams who can't or won't use coax. Al? W6LX ? Glossary: "Window line" = Wireman 551 or 552 or equivalent >>> http://www.karinya.net/g3txq/wet_ll/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com From heinz.baertschi at bluewin.ch Sat Jan 19 15:41:23 2019 From: heinz.baertschi at bluewin.ch (Heinz Baertschi) Date: Sat, 19 Jan 2019 13:41:23 -0700 (MST) Subject: [Elecraft] [K2] T-R Driver Circuit to key KXPA100 In-Reply-To: References: <1547925800716-0.post@n2.nabble.com> <624aecd6-fddc-05ca-6832-8c7a08dbcaa9@embarqmail.com> Message-ID: <1547930483685-0.post@n2.nabble.com> Mark Musick wrote > Heinz, > This is exactly how Don wired my K2 to key an external amp. > The RCA jack is mounted as Don describes. > It works. What more is there to say? > I forget what the voltage and current ratings are for the 2N7000, but as I > remember it will key the majority of amplifiers. > > 73, > Mark, WB9CIF > > -----Original Message----- > From: > elecraft-bounces at .qth > < > elecraft-bounces at .qth > > On Behalf Of Don Wilhelm > Sent: Saturday, January 19, 2019 19:44 > To: Heinz Baertschi < > heinz.baertschi@ > >; > elecraft at .qth > Subject: Re: [Elecraft] [K2] T-R Driver Circuit to key KXPA100 > > Heinz, > > If you have the K60XV option installed in the K2, yes K60XV J2 pin 2 will > key an amplifier like the KXPA100. > The only difficult part is to find a place for a connector on the rear > panel. There is a place near the key jack where you can mount an RCA jack > and not interfere with any components on the RF board - keep the jack as > close to the top of the lower panel as possible. > > 73, > Don W3FPR > > On 1/19/2019 2:23 PM, Heinz Baertschi wrote: >> >> What kind of T-R keying circuit is necessary in the K2 (with K60XV >> installed >> for 60m band usage, no XVTRs connected) to operate the KXPA100 amplifier? >> >> a) Will the XVTR Keyline on K60XV J2-2 / Q3 (2N7000) do it correctly? >> >> b) Is a keying circuit like these necessary? >> http://folk.uio.no/sverre/LA3ZA/blog/K2/N0SS/k2_t-r_rly_drvr.pdf >> ftp://ftp.elecraft.com/K2/Mod%20Notes%20Alerts/K2%20Amplifier%20Keying%20Circuit.pdf >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: > Elecraft at .qth > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to > markmusick@ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: > Elecraft at .qth > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to > lists+1215531472858-365791 at .nabble -- Sent from: http://elecraft.365791.n2.nabble.com/ From heinz.baertschi at bluewin.ch Sat Jan 19 15:43:07 2019 From: heinz.baertschi at bluewin.ch (Heinz Baertschi) Date: Sat, 19 Jan 2019 13:43:07 -0700 (MST) Subject: [Elecraft] [K2] T-R Driver Circuit to key KXPA100 In-Reply-To: References: <1547925800716-0.post@n2.nabble.com> <624aecd6-fddc-05ca-6832-8c7a08dbcaa9@embarqmail.com> Message-ID: <1547930587603-0.post@n2.nabble.com> Mark Musick wrote > Heinz, > This is exactly how Don wired my K2 to key an external amp. > The RCA jack is mounted as Don describes. > It works. What more is there to say? > I forget what the voltage and current ratings are for the 2N7000, but as I > remember it will key the majority of amplifiers. > > 73, > Mark, WB9CIF > > -----Original Message----- > From: > elecraft-bounces at .qth > < > elecraft-bounces at .qth > > On Behalf Of Don Wilhelm > Sent: Saturday, January 19, 2019 19:44 > To: Heinz Baertschi < > heinz.baertschi@ > >; > elecraft at .qth > Subject: Re: [Elecraft] [K2] T-R Driver Circuit to key KXPA100 > > Heinz, > > If you have the K60XV option installed in the K2, yes K60XV J2 pin 2 will > key an amplifier like the KXPA100. > The only difficult part is to find a place for a connector on the rear > panel. There is a place near the key jack where you can mount an RCA jack > and not interfere with any components on the RF board - keep the jack as > close to the top of the lower panel as possible. > > 73, > Don W3FPR > > On 1/19/2019 2:23 PM, Heinz Baertschi wrote: >> >> What kind of T-R keying circuit is necessary in the K2 (with K60XV >> installed >> for 60m band usage, no XVTRs connected) to operate the KXPA100 amplifier? >> >> a) Will the XVTR Keyline on K60XV J2-2 / Q3 (2N7000) do it correctly? >> >> b) Is a keying circuit like these necessary? >> http://folk.uio.no/sverre/LA3ZA/blog/K2/N0SS/k2_t-r_rly_drvr.pdf >> ftp://ftp.elecraft.com/K2/Mod%20Notes%20Alerts/K2%20Amplifier%20Keying%20Circuit.pdf >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: > Elecraft at .qth > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to > markmusick@ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: > Elecraft at .qth > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to > lists+1215531472858-365791 at .nabble Don, Mark, That are good news, thanks. As I have no XVTRs connected to this K2 the 2 RCAs for XVTR IN and XVTR OUT are for free disposal, fortunately. So one of these 2 RCAs is already taken for the output from the Clifton Labs 10000 IF Buffer Amplifier (connected to a P3) and the other is well suited to be used for the PA KEY line. 73 tks, Heinz HB9BCB -- Sent from: http://elecraft.365791.n2.nabble.com/ From jamesdahl at sbcglobal.net Sat Jan 19 16:09:58 2019 From: jamesdahl at sbcglobal.net (James Dahl) Date: Sat, 19 Jan 2019 13:09:58 -0800 Subject: [Elecraft] My KAT500 won't tune when RF is applied via keying down on the microphone or by using the CW paddle. It tunes if I whistle into the microphone. I have it set up as Figure 5. General Cabling Requirements - Stand-Alone Transmitter or Transceiver shows in the manual. I have an Yaesu 450D. Any suggestions as to what the problem is? Message-ID: <6231CFCF-3C25-4959-8FD8-B7739C89D444@sbcglobal.net> My KAT500 won't tune when RF is applied via keying down on the microphone or by using the CW paddle. It tunes if I whistle into the microphone. I have it set up as Figure 5. General Cabling Requirements - Stand-Alone Transmitter or Transceiver shows in the manual. I have an Yaesu 450D. Any suggestions as to what the problem is? Thanks, Jim, WI6X From donwilh at embarqmail.com Sat Jan 19 16:43:42 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sat, 19 Jan 2019 16:43:42 -0500 Subject: [Elecraft] My KAT500 won't tune when RF is applied via keying down on the microphone or by using the CW paddle. It tunes if I whistle into the microphone. I have it set up as Figure 5. General Cabling Requirements - Stand-Alone Transmitter or Transceiver shows in the manual. I have an Yaesu 450D. Any suggestions as to what the problem is? In-Reply-To: <6231CFCF-3C25-4959-8FD8-B7739C89D444@sbcglobal.net> References: <6231CFCF-3C25-4959-8FD8-B7739C89D444@sbcglobal.net> Message-ID: <63e42d3a-1761-9adf-bc52-9b2324a74740@embarqmail.com> Jim, When you simply press the mic PTT, there is very little power out in SSB mode until you talk into the mic - the SSB carrier is suppressed, and all you are transmitting is the suppressed carrier until you produce audio into the microphone. The KAT500 needs at least 7 watts to tune. For CW, do you get power output when you close the key? The FT-450 must be put into Break-In state to deliver RF on a key closure. I suppose there may be the possibility of holding PTT closed and then keying the FT-450 without being in Break-In mode, but I have not studied the entire FT-450 manual. 73, Don W3FPR On 1/19/2019 4:09 PM, James Dahl wrote: > My KAT500 won't tune when RF is applied via keying down on the microphone or by using the CW paddle. It tunes if I whistle into the microphone. I have it set up as Figure 5. General Cabling Requirements - Stand-Alone Transmitter or Transceiver shows in the manual. I have an Yaesu 450D. Any suggestions as to what the problem is? > Thanks, > Jim, WI6X > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com > From Gary at ka1j.com Sat Jan 19 17:02:28 2019 From: Gary at ka1j.com (Gary Smith) Date: Sat, 19 Jan 2019 17:02:28 -0500 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: References: <5C41490D.11856.6540B43@Gary.ka1j.com>, <5C429F2C.8198.1FD82EF@Gary.ka1j.com>, Message-ID: <5C439E74.4453.5E2A347@Gary.ka1j.com> Bob, The K3s did go into transmit, there was no signal being generated. Peter, VK4JD had the correct answer to this thing that has been eluding me. His reply here yesterday was the solution and involved a win 10 page I have never encountered before. It took some looking but I found the page in windows setup he was thinking of & sure enough, in windows 10, there is an option for WSJT-X and sound. He said he doesn't use WSJT-X but he knew exactly what the problem was. Clever fellow. FWIW, my WSJT-X configuration is good, it's a Windows thing... 73, Gary KA1J > Are you saying the K3S does not go into the transmit mode, or are you > saying there is no audio? > > From the K3S CONFIG menu you should have RS232 set to USB.? The K3S > Menu should have MIC SEL set to Line IN.? Is anything plugged into > the Line In on the back of the radio??? Unplug it if? so. The radio > Data MD should be set to DATA A. > > With the F2 Setup Menu of WSJT-X? the Radio pane: Data Bits as 8, > Stop bit as 1 and Handshake as NONE.?? PTT Method as CAT, Mode as > Data/Pkt, Split operation as RIG.??? On the Audio pane:? Soundcard > both Input and Output should be USB Audio CODEC and Mono. > > This is my configuration. > > 73 > > Bob, K4TAX > > > On 1/18/2019 9:53 PM, Gary Smith wrote: > > Folks, > > > > I posted this on the WSJT-X reflector but > > got no replies. Perhaps someone here has > > the answer. > > > > --------------- > > > > Using Windows 10... Joy... > > > > I have WSJT-X set up to use the K3s USB > > Audio Codec, input & output. Both are > > selected as Mono. > > > > The codec is selected in the computer. > > > > I have found no way to get the K3s to > > transmit unless the K3s USB codec is set > > to default device in the computer. > > > > If I have another soundcard/option > > selected in the computer, the K3s will > > indeed present transmit mode as WSJT-X > > signals it to do, but there is no RF > > generated from the K3s. It's Lights on, > > nobody home. WSJT works fine but also > > transfers any computer sound to the K3s > > during transmit. > > > > If nothing is playing on the computer and > > the codec is selected as default, I have > > no trouble with anything WSJT-X related. > > This is how I have had to have it working > > for the last 10 months. However, I > > recently discovered a youtube was playing > > on another page and that audio was coming > > through with my WSJT transmission. This is > > unacceptable. > > > > Bottom line seems to be, I must have the > > K3s USB codec selected as default in the > > windows sound control panel or I cannot > > transmit with WSJT-X. > > > > There must be another something I'm > > missing but I can't seem to find it. > > > > Any suggestions? > > > > 73, > > > > Gary > > KA1J > > > > > > > > > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to rmcgraw at blomand.net > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to gary at ka1j.com From nr4c at widomaker.com Sat Jan 19 17:14:59 2019 From: nr4c at widomaker.com (Nr4c) Date: Sat, 19 Jan 2019 17:14:59 -0500 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: <5C42C58E.20673.2936EF1@Gary.ka1j.com> References: <5C41490D.11856.6540B43@Gary.ka1j.com> <5C429F2C.8198.1FD82EF@Gary.ka1j.com> <018801d4afab$bdebc280$39c34780$@qa.com.au> <5C42C58E.20673.2936EF1@Gary.ka1j.com> Message-ID: <1E5DE463-0FA3-4B07-8625-D9D616460082@widomaker.com> From the volume mixer you can ?Mute? Windows Sounds. This eliminates all those annoying notification squeals and squawks. Sent from my iPhone ...nr4c. bill > On Jan 19, 2019, at 1:37 AM, Gary Smith wrote: > > Peter, > > Absolutely brilliant! I never have seen > this windows page or read about it, but it > absolutely did the trick. I now have an > alternate soundcard selected in windows > sound control panel and have WSJT-X > configured in App volume and device > preferences. > > I have to experiment to be sure nothing > gets out sound-wise from the computer but > at first exposure, this looks to be dead > on. > > How many others have not yet discovered > this! > > 73! > > Gary > KA1J > > >> G'day Gary, >> >> This should work : >> >> Run WSJT-X >> >> Go to the system settings via the cog in the start menu. >> >> Click on "System (Display, sound, notifications") >> >> Click on "Sound" >> >> Scroll down to "Other sound options" and click on "App volume and >> device preferences". >> >> Select WSJT-X from the list of displayed apps and select your USB >> CODEC for both input and output. >> >> Note that I don't use WSJT-X but that's how it's done for everything >> else. >> >> Cheers, >> Peter VK4JD >> >> >> >> -----Original Message----- >> From: elecraft-bounces at mailman.qth.net >> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Gary Smith >> Sent: Saturday, 19 January 2019 1:53 PM To: Elecraft at mailman.qth.net >> Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is >> windows default. >> >> Folks, >> >> I posted this on the WSJT-X reflector but >> got no replies. Perhaps someone here has >> the answer. >> >> --------------- >> >> Using Windows 10... Joy... >> >> I have WSJT-X set up to use the K3s USB >> Audio Codec, input & output. Both are >> selected as Mono. >> >> The codec is selected in the computer. >> >> I have found no way to get the K3s to >> transmit unless the K3s USB codec is set >> to default device in the computer. >> >> If I have another soundcard/option >> selected in the computer, the K3s will >> indeed present transmit mode as WSJT-X >> signals it to do, but there is no RF >> generated from the K3s. It's Lights on, >> nobody home. WSJT works fine but also >> transfers any computer sound to the K3s >> during transmit. >> >> If nothing is playing on the computer and >> the codec is selected as default, I have >> no trouble with anything WSJT-X related. >> This is how I have had to have it working >> for the last 10 months. However, I >> recently discovered a youtube was playing >> on another page and that audio was coming >> through with my WSJT transmission. This is >> unacceptable. >> >> Bottom line seems to be, I must have the >> K3s USB codec selected as default in the >> windows sound control panel or I cannot >> transmit with WSJT-X. >> >> There must be another something I'm >> missing but I can't seem to find it. >> >> Any suggestions? >> >> 73, >> >> Gary >> KA1J >> >> >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to plambert at qa.com.au >> >> > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From nr4c at widomaker.com Sat Jan 19 17:24:45 2019 From: nr4c at widomaker.com (Nr4c) Date: Sat, 19 Jan 2019 17:24:45 -0500 Subject: [Elecraft] K3/0-mini disassembly In-Reply-To: References: Message-ID: <21C816A1-CFDA-42F7-A408-28D3F4D4AD66@widomaker.com> If there is an Assembly Manual look into it for assistance. If not, maybe some help in the operators manual?. Sent from my iPhone ...nr4c. bill > On Jan 19, 2019, at 10:05 AM, Scott Townley wrote: > > I have a K3/0-mini that I removed the rear bail from. Basically I unscrewed the four screws, cracked open the case just a bit, and shook all the internal hardware (nuts/washers) out, and buttoned it back up. > Now I want to put the bail back on. I've gotten the case fully opened up (two halves), but I'm having a challenge with the PCB that's attached to the rear half. It appears those four black "nubs" that you can see on the back are some sort of nylon standoff that's being used for stiffening the PCB. But it's not obvious to me how to remove them or otherwise disengage them. Of course I'd prefer to do this without destroying them and leaving four holes in the back. > Any suggestions? > TIA, > Scott NX7U > > -- > Scott NX7U > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From pvandyke1953 at gmail.com Sat Jan 19 18:10:28 2019 From: pvandyke1953 at gmail.com (Paul Van Dyke) Date: Sat, 19 Jan 2019 18:10:28 -0500 Subject: [Elecraft] MCU Load Issues Message-ID: Went to load the latest update (to me) on my K3S and the radio is now locked in the dark screen MCU LOAD mode. I have checked comports, they are up to date, and rebooted twice and even shut the computer totally off. Nothing ... No power from the P3 is coming in... plugged and repluged the USB cables. all steps that are in the MCU Manager have been followed... even tried to do an EE INIT and it will not do that either... Any ideas or I wait till Tuesday Thank You Paul Van Dyke KB9AVO From k6dgw at foothill.net Sat Jan 19 18:23:05 2019 From: k6dgw at foothill.net (Fred Jensen) Date: Sat, 19 Jan 2019 15:23:05 -0800 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: <66448d5a-04a5-2729-0b65-9eea6f358c97@gmail.com> References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> <05B5F37B-0660-4926-A31F-63F8039727C3@wunderwood.org> <9989355.131693.1547863699373@mail.yahoo.com> <82E1BCF5-3034-45FF-BABA-CA1587FD0796@wunderwood.org> <66448d5a-04a5-2729-0b65-9eea6f358c97@gmail.com> Message-ID: <6b56d7c3-a9d5-e59d-d765-cd3f596d06fb@foothill.net> Be careful with black hose/tubing/pipe.? Cut a small length of it and put it into a microwave oven along with a cup of water for varying lengths of time, checking each time.? If it comes out cool when the water is about to boil, it's probably OK.? It seems some ABS and black drip tubing has some semi-conductive ingredient(s) like carbon?? I've also seen white PVC fittings that failed this test. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 1/19/2019 7:45 AM, Victor Rosenthal 4X6GP wrote: > Today I'm using homemade open wire line, no. 12 (2 mm dia) spaced 4.5 > inches (11.4 cm). Insulators are cut from black irrigation hose. Wire > is ultra flexible type from The Wireman. > > 73, > Victor, 4X6GP > Rehovot, Israel > Formerly K2VCO > CWops no. 5 > http://www.qsl.net/k2vco/ From tombewick at gmail.com Sat Jan 19 18:35:19 2019 From: tombewick at gmail.com (K2bew) Date: Sat, 19 Jan 2019 18:35:19 -0500 Subject: [Elecraft] K2 VCO Alignment T5 L30 In-Reply-To: References: Message-ID: Don et al, I tried a 15pf cap ( what I had on hand) at the source of Q19 to ground and I got .025v on R30 that did not change with the adjustment of L30, essentially no voltage. So, I took it off and it went back to 4.5 volts. So, then I tried Vicen?, EA3ADV's suggestion and I put 17 turns on the red wire of T5. That got me a voltage of 8.5V on R30 with L30 bottomed out that I was able to easily back off to a stable 6 volts. I went ahead and did the voltage tests on the other bands and had a nice range of 1.844 to 6 volts as my low and high on the VCO. So, that's all set. However, new problem. I went on to the test the BFO and I have 0000.04 kHz. on TP2, so it's not working. I went to the trouble shooting guide and I have 0.058 Vrms on pin 6 of U11 with the RF probe. Looking at the archives of the reflector that would indicate that U11 is bad and I need a replacement, correct? or are there other things I should look at first? The good thing is I'm becoming very accustomed to the radio and enjoying the trouble shooting. Thanks for all the help, I really appreciate it. 73, Tom Bewick, K2BEW On Fri, Jan 18, 2019 at 10:33 AM Don Wilhelm wrote: > Tom, > > Normally I would say to spread or compress the turns on T5, but Elecraft > encountered a batch of J310 FETs that do not work very well at Q19 - the > PLL reference oscillator. These troublesome FETs have now been purged > from the Elecraft stock, that the problem should go away going forward. > I am not sure that is your problem, but it is worthy of checking. > > First question is - did you get good frequency readings for the PLL > Reference Oscillator range? If it fails, you see a strange frequency > reading at the high frequency end (when BAND+ is tapped). > Now, the other "funny" thing is that it sometimes checks OK with the > internal counter probe plugged into TP3, but fails when the probe is > removed. > > Under those conditions, the PLL and VFO do not lock together > > So the first thing to try is to solder a 10 to 15pF capacitor between > the source of Q19 and ground. Then between a combination of adjusting > the red turns on T5 and L30 see if you can obtain the correct R30 voltage. > > If that is successful, then all should be well. > > If not successful, get a replacement Q19 from Elecraft. Send the part > number and description to parts at elecraft.com and ask for a replacement. > > If that does not correct things, then email me and we can go through > some other checks to determine the source of the failure. > > 73, > Don W3FPR > > On 1/18/2019 8:48 AM, K2bew wrote: > > Don et al, > > > > Since I know Don monitors the reflector as well as the support emails, > > rather than email Don directly I thought I would ask the question on here > > because I know I always find it helpful to read other peoples questions > on > > here and Don's answer. > > > > Building the K2 I am at the VCO Alignment voltage check on R30 and > > adjusting L30. > > VFO frequency set at 4000.00 kHz > > I initially got 3.5 volts and bottomed out L30 to get it to 5.5 volts, > and > > then I over screwed it to try to get that last half a volt and ended > > damaging it, so, then I carefully took out L30 and put in a new one. > > > > I also took out T5 and rechecked all the ends for continuity, rewound the > > green wire to space it exactly in the middle of the red winding and > spaced > > everything evenly. I confirmed it is the large yellow core, I have 16 on > > the red wire and 4 on the green (by the way the illustration shows 14 > turns > > of red) . I verified I have R30 as Br-R-Br 120 ohms with both my DVM and > by > > color, and I verified C72 is 271, and I reflowed the solder on both. > > With a new 4.7 inductor (large slot, no red mark) in L30 I now get 2.75 > > volts on the left side of R30 to start with and it bottoms out at 4.5 > volts > > (I was very careful to not bottom it out too hard this time and damage > this > > one, and I have already ordered a couple new ones from Elecraft). > > > > What else can I do to increase that voltage? Would changing the number of > > windings on T5 change it enough to get to 6 volts? > > > > Thank you and 73, > > Tom Bewick K2BEW > From donwilh at embarqmail.com Sat Jan 19 18:23:36 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sat, 19 Jan 2019 18:23:36 -0500 Subject: [Elecraft] MCU Load Issues In-Reply-To: References: Message-ID: Paul, Go to the K3 Utility Help file and find the instructions to "Force a Firmware Download. Follow those instructions and you should be back on the air. That "problem" is usually caused by a computer glitch during a firmware load to the K3S. 73, Don W3FPR On 1/19/2019 6:10 PM, Paul Van Dyke wrote: > Went to load the latest update (to me) on my K3S and the radio is now > locked in the dark screen MCU LOAD mode. I have checked comports, they are > up to date, and rebooted twice and even shut the computer totally off. > Nothing ... No power from the P3 is coming in... plugged and repluged the > USB cables. all steps that are in the MCU Manager have been followed... > even tried to do an EE INIT and it will not do that either... > From ab4iq at comcast.net Sat Jan 19 18:44:07 2019 From: ab4iq at comcast.net (AB4IQ) Date: Sat, 19 Jan 2019 17:44:07 -0600 Subject: [Elecraft] K2 VCO Alignment T5 L30 In-Reply-To: References: Message-ID: <003801d4b050$e006c7c0$a0145740$@comcast.net> I've got good news. I had the wrong Capacitor in the BFO section and just happened to have a replacement for C169. Whoops I told on myself! Any way at TP2 +4917.74 and -4911.90 for a difference of 5.84. Don struck again. Hi Hi.. I'll check the voltages on RP6 tomorrow. Ed.. AB4IQ -----Original Message----- From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of K2bew Sent: Saturday, January 19, 2019 5:35 PM To: donwilh at embarqmail.com Cc: Elecraft Mail List Subject: Re: [Elecraft] K2 VCO Alignment T5 L30 Don et al, I tried a 15pf cap ( what I had on hand) at the source of Q19 to ground and I got .025v on R30 that did not change with the adjustment of L30, essentially no voltage. So, I took it off and it went back to 4.5 volts. So, then I tried Vicen?, EA3ADV's suggestion and I put 17 turns on the red wire of T5. That got me a voltage of 8.5V on R30 with L30 bottomed out that I was able to easily back off to a stable 6 volts. I went ahead and did the voltage tests on the other bands and had a nice range of 1.844 to 6 volts as my low and high on the VCO. So, that's all set. However, new problem. I went on to the test the BFO and I have 0000.04 kHz. on TP2, so it's not working. I went to the trouble shooting guide and I have 0.058 Vrms on pin 6 of U11 with the RF probe. Looking at the archives of the reflector that would indicate that U11 is bad and I need a replacement, correct? or are there other things I should look at first? The good thing is I'm becoming very accustomed to the radio and enjoying the trouble shooting. Thanks for all the help, I really appreciate it. 73, Tom Bewick, K2BEW On Fri, Jan 18, 2019 at 10:33 AM Don Wilhelm wrote: > Tom, > > Normally I would say to spread or compress the turns on T5, but > Elecraft encountered a batch of J310 FETs that do not work very well > at Q19 - the PLL reference oscillator. These troublesome FETs have > now been purged from the Elecraft stock, that the problem should go away going forward. > I am not sure that is your problem, but it is worthy of checking. > > First question is - did you get good frequency readings for the PLL > Reference Oscillator range? If it fails, you see a strange frequency > reading at the high frequency end (when BAND+ is tapped). > Now, the other "funny" thing is that it sometimes checks OK with the > internal counter probe plugged into TP3, but fails when the probe is > removed. > > Under those conditions, the PLL and VFO do not lock together > > So the first thing to try is to solder a 10 to 15pF capacitor between > the source of Q19 and ground. Then between a combination of adjusting > the red turns on T5 and L30 see if you can obtain the correct R30 voltage. > > If that is successful, then all should be well. > > If not successful, get a replacement Q19 from Elecraft. Send the part > number and description to parts at elecraft.com and ask for a replacement. > > If that does not correct things, then email me and we can go through > some other checks to determine the source of the failure. > > 73, > Don W3FPR > > On 1/18/2019 8:48 AM, K2bew wrote: > > Don et al, > > > > Since I know Don monitors the reflector as well as the support > > emails, rather than email Don directly I thought I would ask the > > question on here because I know I always find it helpful to read > > other peoples questions > on > > here and Don's answer. > > > > Building the K2 I am at the VCO Alignment voltage check on R30 and > > adjusting L30. > > VFO frequency set at 4000.00 kHz > > I initially got 3.5 volts and bottomed out L30 to get it to 5.5 > > volts, > and > > then I over screwed it to try to get that last half a volt and ended > > damaging it, so, then I carefully took out L30 and put in a new one. > > > > I also took out T5 and rechecked all the ends for continuity, > > rewound the green wire to space it exactly in the middle of the red > > winding and > spaced > > everything evenly. I confirmed it is the large yellow core, I have > > 16 on the red wire and 4 on the green (by the way the illustration > > shows 14 > turns > > of red) . I verified I have R30 as Br-R-Br 120 ohms with both my DVM > > and > by > > color, and I verified C72 is 271, and I reflowed the solder on both. > > With a new 4.7 inductor (large slot, no red mark) in L30 I now get > > 2.75 volts on the left side of R30 to start with and it bottoms out > > at 4.5 > volts > > (I was very careful to not bottom it out too hard this time and > > damage > this > > one, and I have already ordered a couple new ones from Elecraft). > > > > What else can I do to increase that voltage? Would changing the > > number of windings on T5 change it enough to get to 6 volts? > > > > Thank you and 73, > > Tom Bewick K2BEW > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ab4iq at comcast.net From huntinhmb at coastside.net Sat Jan 19 18:58:30 2019 From: huntinhmb at coastside.net (Brian Hunt) Date: Sat, 19 Jan 2019 15:58:30 -0800 Subject: [Elecraft] KAT 500 and open wire In-Reply-To: References: <2395c26e-3caf-c4d7-0d1d-05b41f9c083e@blomand.net> <9c33c5b8-c502-3301-6bc3-eb6985b93553@sdellington.us> <0d89d5b7-8580-dde1-eace-327362285a8f@embarqmail.com> <576780BD-2BDB-4715-8CEE-408376658165@w2xj.net> <438d5198-c649-3487-3921-16210561d83a@sdellington.us> <2304c1c7-c75c-0e5c-ebc9-245dc557973f@embarqmail.com> <05B5F37B-0660-4926-A31F-63F8039727C3@wunderwood.org> <9989355.131693.1547863699373@mail.yahoo.com> Message-ID: <1F506EB6-C59C-47D9-83C7-252EB905BF5A@coastside.net> Electric fence insulator tubes 4" long. Drill each end for #14 THHN stranded. 3.5" spacing gives Zo= ~550 ohms. Box of 200 on Amazon for $16. 73, K0DTJ From edauer at law.du.edu Sat Jan 19 19:22:56 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Sun, 20 Jan 2019 00:22:56 +0000 Subject: [Elecraft] K3 DVR issue Message-ID: Today during the NAQP I experienced occasional strange behavior with a new KDVR in an updated K3 . . . wondering if this has happened to anyone else. The recorder works just right 98% of the time. Randomly, it hangs up in the middle of a recorded message. It just stops. No audio, no RF, but the K3 remains in transmit mode. Sometimes tapping the same M button again restarts the message from the beginning and all is well. Sometimes, nothing has any effect - nothing will get the rig out of transmit other than a power down. And then all is well again for a while. This happens on more than one of the memory buttons, and it happens whether I tap the M button or the corresponding programmed button on the K-Pod. It is infrequent, intermittent, and of course happens at the worst times. On one and only one power-down I saw ERR-DVR. Re-recording messages doesn't fix it. The K3 has F/W revision 5.64, which may be one revision behind. Anyone else experienced this or have an idea what the problem is? Tnx for any advice . . . Ted, KN1CBR From FlatHat at comcast.net Sat Jan 19 20:36:05 2019 From: FlatHat at comcast.net (Richard) Date: Sat, 19 Jan 2019 20:36:05 -0500 Subject: [Elecraft] Frequency Anomaly -- Tamed Message-ID: To all who jumped in to help ? thanks. I just performed Method 2 as found on page 53 of the K3s Owner's Manual, and it made a huge difference all around. Wish I could paste it here. Cheers! Richard Kunc ? W4KBX From nr4c at widomaker.com Sat Jan 19 20:36:57 2019 From: nr4c at widomaker.com (Nr4c) Date: Sat, 19 Jan 2019 20:36:57 -0500 Subject: [Elecraft] K3 DVR issue In-Reply-To: References: Message-ID: <72AA5AD6-462B-466B-AC00-C164E2F48AA2@widomaker.com> Is it possible that you have VOX turned ON or bumped a PTT or FOOTSWITCH? I?ve had the KDVR in a K3 since 2009 and my K3S since they began shipping (S/N 10069, very early s/n). I?ve never had any issue like you describe. Have you contacted Elecraft customer support? Sent from my iPhone ...nr4c. bill > On Jan 19, 2019, at 7:22 PM, Dauer, Edward wrote: > > Today during the NAQP I experienced occasional strange behavior with a new KDVR in an updated K3 . . . wondering if this has happened to anyone else. The recorder works just right 98% of the time. Randomly, it hangs up in the middle of a recorded message. It just stops. No audio, no RF, but the K3 remains in transmit mode. Sometimes tapping the same M button again restarts the message from the beginning and all is well. Sometimes, nothing has any effect - nothing will get the rig out of transmit other than a power down. And then all is well again for a while. This happens on more than one of the memory buttons, and it happens whether I tap the M button or the corresponding programmed button on the K-Pod. It is infrequent, intermittent, and of course happens at the worst times. On one and only one power-down I saw ERR-DVR. Re-recording messages doesn't fix it. The K3 has F/W revision 5.64, which may be one revision behind. Anyone else experienced this or have an i > dea what the problem is? Tnx for any advice . . . > > Ted, KN1CBR > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From kwidelitz at gmail.com Sat Jan 19 21:01:38 2019 From: kwidelitz at gmail.com (Ken Widelitz) Date: Sat, 19 Jan 2019 18:01:38 -0800 Subject: [Elecraft] Mic Issues with Writelog and K3 Message-ID: <000501d4b064$14b6ced0$3e246c70$@gmail.com> My audio input to my K3's has become intermittent with Writelog. I can get it working, leave the radios/computer for a while and it stops working. I can get newly recorded messages to transmit, (F key messages sometimes stop working also intermittently but I've been more successful in getting the F keys to send messages to the radio) so I know the mic in to the computer is working and the audio out to the radios is working. But when I try to use live audio from the mic, nothing gets to the radios. If I plug a mic into the rear panel mic jack and change the menu settings on the K3, that mic works. The Echo Mic is checked in Writelog. The Writelog Sound Board Mixer isn't changed. I've used both old and new versions of Writelog. Any suggestions? 73, Ken, K6LA / VY2TT From john at kk9a.com Sat Jan 19 21:52:08 2019 From: john at kk9a.com (john at kk9a.com) Date: Sat, 19 Jan 2019 21:52:08 -0500 Subject: [Elecraft] K3 DVR issue Message-ID: <002a01d4b06b$22de72e0$689b58a0$@com> I am not sure why VOX would affect the DVR? On SSB I use a KDVR3 activated by my computer's F-keys and my VOX is on 100% of the time. John KK9A Nr4c wrote: Is it possible that you have VOX turned ON or bumped a PTT or FOOTSWITCH? I've had the KDVR in a K3 since 2009 and my K3S since they began shipping (S/N 10069, very early s/n). I've never had any issue like you describe. Have you contacted Elecraft customer support? Sent from my iPhone ...nr4c. bill > On Jan 19, 2019, at 7:22 PM, Dauer, Edward wrote: > > Today during the NAQP I experienced occasional strange behavior with a new KDVR in an updated K3 . . . wondering if this has happened to anyone else. The recorder works just right 98% of the time. Randomly, it hangs up in the middle of a recorded message. It just stops. No audio, no RF, but the K3 remains in transmit mode. Sometimes tapping the same M button again restarts the message from the beginning and all is well. Sometimes, nothing has any effect - nothing will get the rig out of transmit other than a power down. And then all is well again for a while. This happens on more than one of the memory buttons, and it happens whether I tap the M button or the corresponding programmed button on the K-Pod. It is infrequent, intermittent, and of course happens at the worst times. On one and only one power-down I saw ERR-DVR. Re-recording messages doesn't fix it. The K3 has F/W revision 5.64, which may be one revision behind. Anyone else experienced this or have an i > dea what the problem is? Tnx for any advice . . . > > Ted, KN1CBR From Gary at ka1j.com Sat Jan 19 22:07:42 2019 From: Gary at ka1j.com (Gary Smith) Date: Sat, 19 Jan 2019 22:07:42 -0500 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: <1E5DE463-0FA3-4B07-8625-D9D616460082@widomaker.com> References: <5C41490D.11856.6540B43@Gary.ka1j.com>, <5C42C58E.20673.2936EF1@Gary.ka1j.com>, <1E5DE463-0FA3-4B07-8625-D9D616460082@widomaker.com> Message-ID: <5C43E5FE.32392.139CDF@Gary.ka1j.com> Thanks Bill, I always turn off windows sounds, they bother me when I'm concentrating on something. This issue deals with the stereo/mono audio as from youtube or some web page with streaming music/sounds that happened to be running. I couldn't hear the music/talk/noise from the computer and that got transmitted when I would transmit with WSJT-X, maybe with AFSK as well. I always hear people's audio, words on WSJT, I must have been doing that too, I just couldn't hear it as I use a bluetooth dongle for listening to the computer & pull the dongle when I'm not listening to it. I have a feeling this is a very common issue and very few people know about this windows setting which just made all the difference with WSJT-X, 20+ years of using windows and this was the first I saw that page. Gary KA1J > From the volume mixer you can "Mute" Windows Sounds. This > eliminates all those annoying notification squeals and squawks. > > Sent from my iPhone > ...nr4c. bill > > > > On Jan 19, 2019, at 1:37 AM, Gary Smith wrote: > > > > Peter, > > > > Absolutely brilliant! I never have seen > > this windows page or read about it, but it > > absolutely did the trick. I now have an > > alternate soundcard selected in windows > > sound control panel and have WSJT-X > > configured in App volume and device > > preferences. > > > > I have to experiment to be sure nothing > > gets out sound-wise from the computer but > > at first exposure, this looks to be dead > > on. > > > > How many others have not yet discovered > > this! > > > > 73! > > > > Gary > > KA1J > > > > > >> G'day Gary, > >> > >> This should work : > >> > >> Run WSJT-X > >> > >> Go to the system settings via the cog in the start menu. > >> > >> Click on "System (Display, sound, notifications") > >> > >> Click on "Sound" > >> > >> Scroll down to "Other sound options" and click on "App volume and > >> device preferences". > >> > >> Select WSJT-X from the list of displayed apps and select your USB > >> CODEC for both input and output. > >> > >> Note that I don't use WSJT-X but that's how it's done for > >> everything else. > >> > >> Cheers, > >> Peter VK4JD > >> > >> > >> > >> -----Original Message----- > >> From: elecraft-bounces at mailman.qth.net > >> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Gary Smith > >> Sent: Saturday, 19 January 2019 1:53 PM To: > >> Elecraft at mailman.qth.net Subject: [Elecraft] K3s can only transmit > >> wsjt if the K3s codec is windows default. > >> > >> Folks, > >> > >> I posted this on the WSJT-X reflector but > >> got no replies. Perhaps someone here has > >> the answer. > >> > >> --------------- > >> > >> Using Windows 10... Joy... > >> > >> I have WSJT-X set up to use the K3s USB > >> Audio Codec, input & output. Both are > >> selected as Mono. > >> > >> The codec is selected in the computer. > >> > >> I have found no way to get the K3s to > >> transmit unless the K3s USB codec is set > >> to default device in the computer. > >> > >> If I have another soundcard/option > >> selected in the computer, the K3s will > >> indeed present transmit mode as WSJT-X > >> signals it to do, but there is no RF > >> generated from the K3s. It's Lights on, > >> nobody home. WSJT works fine but also > >> transfers any computer sound to the K3s > >> during transmit. > >> > >> If nothing is playing on the computer and > >> the codec is selected as default, I have > >> no trouble with anything WSJT-X related. > >> This is how I have had to have it working > >> for the last 10 months. However, I > >> recently discovered a youtube was playing > >> on another page and that audio was coming > >> through with my WSJT transmission. This is > >> unacceptable. > >> > >> Bottom line seems to be, I must have the > >> K3s USB codec selected as default in the > >> windows sound control panel or I cannot > >> transmit with WSJT-X. > >> > >> There must be another something I'm > >> missing but I can't seem to find it. > >> > >> Any suggestions? > >> > >> 73, > >> > >> Gary > >> KA1J > >> > >> > >> > >> > >> ______________________________________________________________ > >> Elecraft mailing list Home: > >> http://mailman.qth.net/mailman/listinfo/elecraft Help: > >> http://mailman.qth.net/mmfaq.htm Post: > >> mailto:Elecraft at mailman.qth.net > >> > >> This list hosted by: http://www.qsl.net > >> Please help support this email list: http://www.qsl.net/donate.html > >> Message delivered to plambert at qa.com.au > >> > >> > > > > > > > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to nr4c at widomaker.com > > From rmcgraw at blomand.net Sat Jan 19 22:23:15 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sat, 19 Jan 2019 21:23:15 -0600 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: <5C43E5FE.32392.139CDF@Gary.ka1j.com> References: <5C41490D.11856.6540B43@Gary.ka1j.com> <5C42C58E.20673.2936EF1@Gary.ka1j.com> <1E5DE463-0FA3-4B07-8625-D9D616460082@widomaker.com> <5C43E5FE.32392.139CDF@Gary.ka1j.com> Message-ID: This type of discussion makes me wonder if folks are feeding audio direct from the computer to the Line IN on the rear or to the MIC input.? If they are using an external soundcard, i.e. Signalink or such, then I can understand Windows sounds being heard.? Not good. If they are using the USB mode {and not a DATA mode, with the Menu item MIC + LINE set to ON, thus anything picked up by the mike is also transmitted along with WSJT-X data. It would do well to carefully listen to your MON with headphones to see what exactly is being transmitted.??? Correctly configured, only the WSJT-X data is transmitted......and as it should be. 73 Bob, K4TAX On 1/19/2019 9:07 PM, Gary Smith wrote: > Thanks Bill, > > I always turn off windows sounds, they > bother me when I'm concentrating on > something. This issue deals with the > stereo/mono audio as from youtube or some > web page with streaming music/sounds that > happened to be running. I couldn't hear > the music/talk/noise from the computer and > that got transmitted when I would transmit > with WSJT-X, maybe with AFSK as well. > > I always hear people's audio, words on > WSJT, I must have been doing that too, I > just couldn't hear it as I use a bluetooth > dongle for listening to the computer & > pull the dongle when I'm not listening to > it. > > I have a feeling this is a very common > issue and very few people know about this > windows setting which just made all the > difference with WSJT-X, 20+ years of using > windows and this was the first I saw that > page. > > Gary > KA1J > >> From the volume mixer you can "Mute" Windows Sounds. This >> eliminates all those annoying notification squeals and squawks. >> >> Sent from my iPhone >> ...nr4c. bill >> >> >>> On Jan 19, 2019, at 1:37 AM, Gary Smith wrote: >>> >>> Peter, >>> >>> Absolutely brilliant! I never have seen >>> this windows page or read about it, but it >>> absolutely did the trick. I now have an >>> alternate soundcard selected in windows >>> sound control panel and have WSJT-X >>> configured in App volume and device >>> preferences. >>> >>> I have to experiment to be sure nothing >>> gets out sound-wise from the computer but >>> at first exposure, this looks to be dead >>> on. >>> >>> How many others have not yet discovered >>> this! >>> >>> 73! >>> >>> Gary >>> KA1J >>> >>> >>>> G'day Gary, >>>> >>>> This should work : >>>> >>>> Run WSJT-X >>>> >>>> Go to the system settings via the cog in the start menu. >>>> >>>> Click on "System (Display, sound, notifications") >>>> >>>> Click on "Sound" >>>> >>>> Scroll down to "Other sound options" and click on "App volume and >>>> device preferences". >>>> >>>> Select WSJT-X from the list of displayed apps and select your USB >>>> CODEC for both input and output. >>>> >>>> Note that I don't use WSJT-X but that's how it's done for >>>> everything else. >>>> >>>> Cheers, >>>> Peter VK4JD >>>> >>>> >>>> >>>> -----Original Message----- >>>> From: elecraft-bounces at mailman.qth.net >>>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Gary Smith >>>> Sent: Saturday, 19 January 2019 1:53 PM To: >>>> Elecraft at mailman.qth.net Subject: [Elecraft] K3s can only transmit >>>> wsjt if the K3s codec is windows default. >>>> >>>> Folks, >>>> >>>> I posted this on the WSJT-X reflector but >>>> got no replies. Perhaps someone here has >>>> the answer. >>>> >>>> --------------- >>>> >>>> Using Windows 10... Joy... >>>> >>>> I have WSJT-X set up to use the K3s USB >>>> Audio Codec, input & output. Both are >>>> selected as Mono. >>>> >>>> The codec is selected in the computer. >>>> >>>> I have found no way to get the K3s to >>>> transmit unless the K3s USB codec is set >>>> to default device in the computer. >>>> >>>> If I have another soundcard/option >>>> selected in the computer, the K3s will >>>> indeed present transmit mode as WSJT-X >>>> signals it to do, but there is no RF >>>> generated from the K3s. It's Lights on, >>>> nobody home. WSJT works fine but also >>>> transfers any computer sound to the K3s >>>> during transmit. >>>> >>>> If nothing is playing on the computer and >>>> the codec is selected as default, I have >>>> no trouble with anything WSJT-X related. >>>> This is how I have had to have it working >>>> for the last 10 months. However, I >>>> recently discovered a youtube was playing >>>> on another page and that audio was coming >>>> through with my WSJT transmission. This is >>>> unacceptable. >>>> >>>> Bottom line seems to be, I must have the >>>> K3s USB codec selected as default in the >>>> windows sound control panel or I cannot >>>> transmit with WSJT-X. >>>> >>>> There must be another something I'm >>>> missing but I can't seem to find it. >>>> >>>> Any suggestions? >>>> >>>> 73, >>>> >>>> Gary >>>> KA1J >>>> >>>> >>>> >>>> >>>> ______________________________________________________________ >>>> Elecraft mailing list Home: >>>> http://mailman.qth.net/mailman/listinfo/elecraft Help: >>>> http://mailman.qth.net/mmfaq.htm Post: >>>> mailto:Elecraft at mailman.qth.net >>>> >>>> This list hosted by: http://www.qsl.net >>>> Please help support this email list: http://www.qsl.net/donate.html >>>> Message delivered to plambert at qa.com.au >>>> >>>> >>> >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to nr4c at widomaker.com >> > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From Gary at ka1j.com Sat Jan 19 22:37:46 2019 From: Gary at ka1j.com (Gary Smith) Date: Sat, 19 Jan 2019 22:37:46 -0500 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: <5C42C58E.20673.2936EF1@Gary.ka1j.com> References: <5C41490D.11856.6540B43@Gary.ka1j.com>, <018801d4afab$bdebc280$39c34780$@qa.com.au>, <5C42C58E.20673.2936EF1@Gary.ka1j.com> Message-ID: <5C43ED0A.28622.2F220A@Gary.ka1j.com> Folks, this should be my final post here on this but I think the information applies to any of us who use the K3s Codec with WSJT-X, maybe AFSK too, I haven't researched that possibility. A brief recap to the issue at hand: The only way I could get WSJT-X to get the K3S to transmit was if I selected the K3s codec as default in windows. Doing so transmitted computer/internet generated sounds along with the WSJT-X signal. - Doing the procedure below will resolve this issue. Thanks to Peter, VK4JD who does not use WSJT-X for pointing this obscure setting out to me. How difficult my signal was, and maybe yours unknowingly to you, has to be to decode.. Peter's suggestion below is perfect. I wanted to find out the easiest way to demonstrate this windows "feature". Here is a URL that describes how to find this page in windows 10. Not sure about earlier versions of windows, I only have 10 now. https://tinyurl.com/y7dc57vm Now... Something I discovered: you must have WSJT-X running to see the option in this windows page! When I went to the page, WSJT-X was not showing and then I realized I was not running it. I use Win4K3Suite so I started that and then started WSJT-X. Moments later the WSJT-X sound ap was showing. Here is what it looks like in win 10: http://doctorgary.net/ap-vol-dev-pref.jpg When Peter's suggestion below led me to this windows page, the WSJT-X output and input were the windows default output and input. I selected the USB codec and that is what immediately stopped the K3s from sending out superfluous audio with my WSJT signal. To be sure, both the WSJT-X and audio from the computer were being sent out simultaneously. Not windows sounds, those have been off from day 1. I'm talking about any sound from any web page or audio ap that may be running without you hearing it. In this case that caused me issues with WSJT-X and the K3s, it was a youtube video that was playing & I didn't know it. I am posting this information to the WSJT-X list but since it dealt with the K3s, this answer also belongs here. Perhaps it is the same with any external card you use, as in the K3 with external digital soundcard? Hope you check your windows setting, you might be surprised. 73, Gary KA1J > Peter, > > Absolutely brilliant! I never have seen > this windows page or read about it, but it > absolutely did the trick. I now have an > alternate soundcard selected in windows > sound control panel and have WSJT-X > configured in App volume and device > preferences. > > I have to experiment to be sure nothing > gets out sound-wise from the computer but > at first exposure, this looks to be dead > on. > > How many others have not yet discovered > this! > > 73! > > Gary > KA1J > > > > G'day Gary, > > > > This should work : > > > > Run WSJT-X > > > > Go to the system settings via the cog in the start menu. > > > > Click on "System (Display, sound, notifications") > > > > Click on "Sound" > > > > Scroll down to "Other sound options" and click on "App volume and > > device preferences". > > > > Select WSJT-X from the list of displayed apps and select your USB > > CODEC for both input and output. > > > > Note that I don't use WSJT-X but that's how it's done for everything > > else. > > > > Cheers, > > Peter VK4JD > > > > > > > > -----Original Message----- > > From: elecraft-bounces at mailman.qth.net > > [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Gary Smith > > Sent: Saturday, 19 January 2019 1:53 PM To: Elecraft at mailman.qth.net > > Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is > > windows default. > > > > Folks, > > > > I posted this on the WSJT-X reflector but > > got no replies. Perhaps someone here has > > the answer. > > > > --------------- > > > > Using Windows 10... Joy... > > > > I have WSJT-X set up to use the K3s USB > > Audio Codec, input & output. Both are > > selected as Mono. > > > > The codec is selected in the computer. > > > > I have found no way to get the K3s to > > transmit unless the K3s USB codec is set > > to default device in the computer. > > > > If I have another soundcard/option > > selected in the computer, the K3s will > > indeed present transmit mode as WSJT-X > > signals it to do, but there is no RF > > generated from the K3s. It's Lights on, > > nobody home. WSJT works fine but also > > transfers any computer sound to the K3s > > during transmit. > > > > If nothing is playing on the computer and > > the codec is selected as default, I have > > no trouble with anything WSJT-X related. > > This is how I have had to have it working > > for the last 10 months. However, I > > recently discovered a youtube was playing > > on another page and that audio was coming > > through with my WSJT transmission. This is > > unacceptable. > > > > Bottom line seems to be, I must have the > > K3s USB codec selected as default in the > > windows sound control panel or I cannot > > transmit with WSJT-X. > > > > There must be another something I'm > > missing but I can't seem to find it. > > > > Any suggestions? > > > > 73, > > > > Gary > > KA1J > > > > > > > > > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to plambert at qa.com.au > > > > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to gary at ka1j.com > From rmcgraw at blomand.net Sat Jan 19 22:46:52 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sat, 19 Jan 2019 21:46:52 -0600 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: <5C43ED0A.28622.2F220A@Gary.ka1j.com> References: <5C41490D.11856.6540B43@Gary.ka1j.com> <018801d4afab$bdebc280$39c34780$@qa.com.au> <5C42C58E.20673.2936EF1@Gary.ka1j.com> <5C43ED0A.28622.2F220A@Gary.ka1j.com> Message-ID: So what happens if you don't run Win4K3Suite??? I run WSJT-X and nothing else and have NO issues with audio, control, or Windows sound.? I find that WSJT-X handles everything that is needed, radio control, audio control, and logging. Conclusion:? More software applications running = more issues and problems to resolve. 73 Bob, K4TAX On 1/19/2019 9:37 PM, Gary Smith wrote: > Folks, this should be my final post here > on this but I think the information > applies to any of us who use the K3s Codec > with WSJT-X, maybe AFSK too, I haven't > researched that possibility. > > A brief recap to the issue at hand: The > only way I could get WSJT-X to get the K3S > to transmit was if I selected the K3s > codec as default in windows. Doing so > transmitted computer/internet generated > sounds along with the WSJT-X signal. - > Doing the procedure below will resolve > this issue. Thanks to Peter, VK4JD who > does not use WSJT-X for pointing this > obscure setting out to me. > > How difficult my signal was, and maybe > yours unknowingly to you, has to be to > decode.. > > Peter's suggestion below is perfect. I > wanted to find out the easiest way to > demonstrate this windows "feature". Here > is a URL that describes how to find this > page in windows 10. Not sure about earlier > versions of windows, I only have 10 now. > > https://tinyurl.com/y7dc57vm > > Now... Something I discovered: you must > have WSJT-X running to see the option in > this windows page! > > When I went to the page, WSJT-X was not > showing and then I realized I was not > running it. I use Win4K3Suite so I started > that and then started WSJT-X. Moments > later the WSJT-X sound ap was showing. > Here is what it looks like in win 10: > > http://doctorgary.net/ap-vol-dev-pref.jpg > > When Peter's suggestion below led me to > this windows page, the WSJT-X output and > input were the windows default output and > input. I selected the USB codec and that > is what immediately stopped the K3s from > sending out superfluous audio with my WSJT > signal. > > To be sure, both the WSJT-X and audio from > the computer were being sent out > simultaneously. Not windows sounds, those > have been off from day 1. I'm talking > about any sound from any web page or audio > ap that may be running without you hearing > it. In this case that caused me issues > with WSJT-X and the K3s, it was a youtube > video that was playing & I didn't know it. > > I am posting this information to the > WSJT-X list but since it dealt with the > K3s, this answer also belongs here. > Perhaps it is the same with any external > card you use, as in the K3 with external > digital soundcard? > > Hope you check your windows setting, you > might be surprised. > > 73, > > Gary > KA1J > >> Peter, >> >> Absolutely brilliant! I never have seen >> this windows page or read about it, but it >> absolutely did the trick. I now have an >> alternate soundcard selected in windows >> sound control panel and have WSJT-X >> configured in App volume and device >> preferences. >> >> I have to experiment to be sure nothing >> gets out sound-wise from the computer but >> at first exposure, this looks to be dead >> on. >> >> How many others have not yet discovered >> this! >> >> 73! >> >> Gary >> KA1J >> >> >>> G'day Gary, >>> >>> This should work : >>> >>> Run WSJT-X >>> >>> Go to the system settings via the cog in the start menu. >>> >>> Click on "System (Display, sound, notifications") >>> >>> Click on "Sound" >>> >>> Scroll down to "Other sound options" and click on "App volume and >>> device preferences". >>> >>> Select WSJT-X from the list of displayed apps and select your USB >>> CODEC for both input and output. >>> >>> Note that I don't use WSJT-X but that's how it's done for everything >>> else. >>> >>> Cheers, >>> Peter VK4JD >>> >>> >>> >>> -----Original Message----- >>> From: elecraft-bounces at mailman.qth.net >>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Gary Smith >>> Sent: Saturday, 19 January 2019 1:53 PM To: Elecraft at mailman.qth.net >>> Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is >>> windows default. >>> >>> Folks, >>> >>> I posted this on the WSJT-X reflector but >>> got no replies. Perhaps someone here has >>> the answer. >>> >>> --------------- >>> >>> Using Windows 10... Joy... >>> >>> I have WSJT-X set up to use the K3s USB >>> Audio Codec, input & output. Both are >>> selected as Mono. >>> >>> The codec is selected in the computer. >>> >>> I have found no way to get the K3s to >>> transmit unless the K3s USB codec is set >>> to default device in the computer. >>> >>> If I have another soundcard/option >>> selected in the computer, the K3s will >>> indeed present transmit mode as WSJT-X >>> signals it to do, but there is no RF >>> generated from the K3s. It's Lights on, >>> nobody home. WSJT works fine but also >>> transfers any computer sound to the K3s >>> during transmit. >>> >>> If nothing is playing on the computer and >>> the codec is selected as default, I have >>> no trouble with anything WSJT-X related. >>> This is how I have had to have it working >>> for the last 10 months. However, I >>> recently discovered a youtube was playing >>> on another page and that audio was coming >>> through with my WSJT transmission. This is >>> unacceptable. >>> >>> Bottom line seems to be, I must have the >>> K3s USB codec selected as default in the >>> windows sound control panel or I cannot >>> transmit with WSJT-X. >>> >>> There must be another something I'm >>> missing but I can't seem to find it. >>> >>> Any suggestions? >>> >>> 73, >>> >>> Gary >>> KA1J >>> >>> >>> >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to plambert at qa.com.au >>> >>> >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to gary at ka1j.com >> > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From kevinr at coho.net Sat Jan 19 22:47:27 2019 From: kevinr at coho.net (kevinr) Date: Sat, 19 Jan 2019 19:47:27 -0800 Subject: [Elecraft] Elecraft CW Net Announcement Message-ID: Good Evening, ?? I have been reading forecasts of frigid cold in middle America.? Being a native of Wisconsin frigid means at least 25 below zero with wind chill subtracted from there.? I don't think the news people really mean that though.? The predictions have been drifting upward with a temperature of 15 degrees (above zero) with light wind.? They must have been raised in Florida :) ?? The sun has been actively sending ions even without any sunspots.? Sometime around midweek there will be a stream of solar wind.? Too bad those can't hit on Friday morning so the weekend will have a refreshed ionosphere.? However, I don't schedule these things. ?? On Wednesday I stopped banging on the keyboard and looked up. The sky was dark.? I thought I had lost most of the day working when I noticed it was only 1 PM.? The cloud layer was so thick I thought it the sun was about to set.? When I looked at a satellite photo I found out why.? I was under a large stream of water flowing from well out in the Pacific directed at the mouth of the Columbia River.? Needless to say it has been a very wet week. Please join us tomorrow on: 14050 kHz at 2200z Sunday? (2 PM PST Sunday) ?7047 kHz at 0000z Monday? (4 PM PST Sunday) 73, ?? Kevin. KD5ONS - From jsodus at comcast.net Sat Jan 19 23:59:23 2019 From: jsodus at comcast.net (JEROME SODUS) Date: Sat, 19 Jan 2019 23:59:23 -0500 (EST) Subject: [Elecraft] coaxial-cable patent# 1407 on 6apr1880. Message-ID: <1940879556.275278.1547960363782@connect.xfinity.com> Hello, Walter K6WRU has written, "I think we take coaxial cable for granted. It was a brilliant invention and a real gift to people who love radio. Maybe I?ll start celebrating December 8th as Coaxial Cable Day. https://www.wired.com/2009/12/1208coaxial-cable-patent/" Well, Walter, perhaps April 6th may be a better date to celebrate because an English fellow, Oliver Heaviside, was granted patent# 1407 on 6-apr-1880 for a coaxial-cable. That's some 51 years earlier. We owe a debt of gratitude to Heaviside; some examples.... He developed the Transmission-Line theory; so important to hams. Hams, who are electronic-engineers, know about Maxwell's equations; in truth, they are Heaviside's equations and they are so elegant in their simplicity, having replaced twelve of Maxwell's twenty equations. Maxwell's were so complicated that Heaviside set them aside and developed his four from a different starting point. Heaviside predicted there must be, in the atmosphere, a conducting layer to let radio waves to follow the Earth's curvature. Heaviside coined words that we take for granted, some examples....inductance, impedance, permeability, permittivity, admittance, susceptance. Circuit-Analysis, that I used daily in my design work, was started by Heaviside. 73 Jerry KM3K From frantz at pwpconsult.com Sun Jan 20 02:03:40 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Sat, 19 Jan 2019 23:03:40 -0800 Subject: [Elecraft] K3 DVR issue In-Reply-To: <72AA5AD6-462B-466B-AC00-C164E2F48AA2@widomaker.com> Message-ID: I press my footswitch briefly when I want to stop playing a "M" button recording. I think that's normal behavior for a K3. (I don't use VOX with voice modes. Too many people come into my shack to ask me questions and I don't want my answers to go out over the air.) 73 Bill AE6JV On 1/19/19 at 5:36 PM, nr4c at widomaker.com (Nr4c) wrote: >Is it possible that you have VOX turned ON or bumped a PTT or FOOTSWITCH? ------------------------------------------------------------------------------------- Bill Frantz | Government is not reason, it is not eloquence, it is force; like 408-356-8506 | a fire, a troublesome servant and a fearful master. Never for a www.pwpconsult.com | moment should it be left to irresponsible action. Geo Washington From nr4c at widomaker.com Sun Jan 20 03:45:21 2019 From: nr4c at widomaker.com (Nr4c) Date: Sun, 20 Jan 2019 03:45:21 -0500 Subject: [Elecraft] K3 DVR issue In-Reply-To: <002a01d4b06b$22de72e0$689b58a0$@com> References: <002a01d4b06b$22de72e0$689b58a0$@com> Message-ID: <6738CDE2-7FD8-40C7-B144-529836BC7496@widomaker.com> Pressing the PTT will stop the KDVR and I wonder if a noise in the shack that trips the VOX might do the same thing! Sent from my iPhone ...nr4c. bill > On Jan 19, 2019, at 9:52 PM, wrote: > > I am not sure why VOX would affect the DVR? On SSB I use a KDVR3 activated > by my computer's F-keys and my VOX is on 100% of the time. > > John KK9A > > Nr4c wrote: > > Is it possible that you have VOX turned ON or bumped a PTT or FOOTSWITCH? > > I've had the KDVR in a K3 since 2009 and my K3S since they began shipping > (S/N 10069, very early s/n). I've never had any issue like you describe. > > Have you contacted Elecraft customer support? > > Sent from my iPhone > ...nr4c. bill > > >> On Jan 19, 2019, at 7:22 PM, Dauer, Edward wrote: >> >> Today during the NAQP I experienced occasional strange behavior with a new > KDVR in an updated K3 . . . wondering if this has happened to anyone else. > The recorder works just right 98% of the time. Randomly, it hangs up in the > middle of a recorded message. It just stops. No audio, no RF, but the K3 > remains in transmit mode. Sometimes tapping the same M button again > restarts the message from the beginning and all is well. Sometimes, nothing > has any effect - nothing will get the rig out of transmit other than a power > down. And then all is well again for a while. This happens on more than > one of the memory buttons, and it happens whether I tap the M button or the > corresponding programmed button on the K-Pod. It is infrequent, > intermittent, and of course happens at the worst times. On one and only one > power-down I saw ERR-DVR. Re-recording messages doesn't fix it. The K3 > has F/W revision 5.64, which may be one revision behind. Anyone else > experienced this or have an i >> dea what the problem is? Tnx for any advice . . . >> >> Ted, KN1CBR > From glen.torr at gmail.com Sun Jan 20 03:45:57 2019 From: glen.torr at gmail.com (Glen Torr) Date: Sun, 20 Jan 2019 19:45:57 +1100 Subject: [Elecraft] coaxial-cable patent# 1407 on 6apr1880. In-Reply-To: <1940879556.275278.1547960363782@connect.xfinity.com> References: <1940879556.275278.1547960363782@connect.xfinity.com> Message-ID: Hi Jerome, Thanks so much for bringing this to our attention. One of my most precious books is the biography of Oliver Heaviside by Paul J. Nahin. (Oliver Heaviside: The Life, Work and Times of an Electrical Genius of the Victorian Age). He was a genius indeed. We have a Professor of Physics here in Australia called David Jamison, University of Melbourne. He is a follower of Oliver. I attended a lecture by him some years ago. Very inspiring, Oliver went within a whisker of defining Relativity. Like Oliver I am a ferm believer in the ether, just that these days we call it dark matter and dark energy. Certainly one of my heroes. Cheers, Glen, VK1FB On Sunday, January 20, 2019, JEROME SODUS wrote: > Hello, > > > Walter K6WRU has written, "I think we take coaxial cable for granted. It > was a brilliant invention and a real gift to people who love radio. Maybe > I?ll start celebrating December 8th as Coaxial Cable Day. > https://www.wired.com/2009/12/1208coaxial-cable-patent/" > > Well, Walter, perhaps April 6th may be a better date to celebrate because > an English fellow, Oliver Heaviside, was granted patent# 1407 on 6-apr-1880 > for a coaxial-cable. That's some 51 years earlier. > > > We owe a debt of gratitude to Heaviside; some examples.... > > He developed the Transmission-Line theory; so important to hams. > > Hams, who are electronic-engineers, know about Maxwell's equations; in > truth, they are Heaviside's equations and they are so elegant in their > simplicity, having replaced twelve of Maxwell's twenty equations. Maxwell's > were so complicated that Heaviside set them aside and developed his four > from a different starting point. > > Heaviside predicted there must be, in the atmosphere, a conducting layer > to let radio waves to follow the Earth's curvature. > > Heaviside coined words that we take for granted, some > examples....inductance, impedance, permeability, permittivity, admittance, > susceptance. > > Circuit-Analysis, that I used daily in my design work, was started by > Heaviside. > > > 73 Jerry KM3K > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to glen.torr at gmail.com > From elecraft at g4fre.com Sun Jan 20 04:24:10 2019 From: elecraft at g4fre.com (elecraft at g4fre.com) Date: Sun, 20 Jan 2019 09:24:10 -0000 Subject: [Elecraft] For Sale: K3/KX3 Accessories UK ONLY Message-ID: <001301d4b0a1$e6844b80$b38ce280$@g4fre.com> Clearing out some lesser used items:- 1) Remotehams Orbcontrol device interface for K3. https://www.remotehams.com/orb-control-device.html with USB cable ?105 2) Pignology Pigtail http://pignology.net/pigtail/ . Serial to WIFI converter. I used it to allow ISDR Panadaptor on IPAD to properly display KX3 frequency. ?85 3) Griffin Technology IMIC. The original external audio interface adaptor for the IPAD. https://griffintechnology.com/products/audio/imic-usb-audio-adapter . Used with ISDR App. In box. ?15 4) K3 6 kHz AM filter KFL3A-6KIR ?90 All prices include UK shipping If of interest, please email direct Dave G4FRE --- This email has been checked for viruses by AVG. https://www.avg.com From woyb10051 at outlook.com Sun Jan 20 06:59:17 2019 From: woyb10051 at outlook.com (John Langdon) Date: Sun, 20 Jan 2019 11:59:17 +0000 Subject: [Elecraft] coaxial-cable patent# 1407 on 6apr1880. In-Reply-To: <1940879556.275278.1547960363782@connect.xfinity.com> References: <1940879556.275278.1547960363782@connect.xfinity.com> Message-ID: Heaviside only applied for one patent, but it was a big one. He never collected any royalties on it, and all of his other inventions were published without patent protection, as he thought it his duty share his knowledge. He started out as a telegrapher, and began developed his math skills by finding faults in undersea cables. A truly amazing fellow. For the best book I have found about that era, try "The Maxwellians" by Bruce Hunt, available on Amazon. 73 John N5CQ -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of JEROME SODUS Sent: Saturday, January 19, 2019 10:59 PM To: elecraft at mailman.qth.net Subject: [Elecraft] coaxial-cable patent# 1407 on 6apr1880. Hello, Walter K6WRU has written, "I think we take coaxial cable for granted. It was a brilliant invention and a real gift to people who love radio. Maybe I?ll start celebrating December 8th as Coaxial Cable Day. https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.wired.com%2F2009%2F12%2F1208coaxial-cable-patent%2F&data=02%7C01%7C%7C3f171467c8c94095c83e08d67e949db9%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636835574096449183&sdata=d%2BDAeXNVRUv29D0erqw%2FBdpdkMJpfAFwdlUF%2FbJaFm4%3D&reserved=0" Well, Walter, perhaps April 6th may be a better date to celebrate because an English fellow, Oliver Heaviside, was granted patent# 1407 on 6-apr-1880 for a coaxial-cable. That's some 51 years earlier. We owe a debt of gratitude to Heaviside; some examples.... He developed the Transmission-Line theory; so important to hams. Hams, who are electronic-engineers, know about Maxwell's equations; in truth, they are Heaviside's equations and they are so elegant in their simplicity, having replaced twelve of Maxwell's twenty equations. Maxwell's were so complicated that Heaviside set them aside and developed his four from a different starting point. Heaviside predicted there must be, in the atmosphere, a conducting layer to let radio waves to follow the Earth's curvature. Heaviside coined words that we take for granted, some examples....inductance, impedance, permeability, permittivity, admittance, susceptance. Circuit-Analysis, that I used daily in my design work, was started by Heaviside. 73 Jerry KM3K ______________________________________________________________ Elecraft mailing list Home: https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C3f171467c8c94095c83e08d67e949db9%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636835574096449183&sdata=QyhO%2F3vsQ66R0XymaJdoxhc0BS2yzqiTY6NYSAkafTU%3D&reserved=0 Help: https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C3f171467c8c94095c83e08d67e949db9%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636835574096449183&sdata=WMvekuIiZzPlaHoAiz3zVf23%2BthALvG%2FO%2B8Ve4n9yuA%3D&reserved=0 Post: mailto:Elecraft at mailman.qth.net This list hosted by: https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net&data=02%7C01%7C%7C3f171467c8c94095c83e08d67e949db9%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636835574096605433&sdata=LQWKjU2PIb0NgnWVMw13Q0OMvTHg1MqRqXZ%2FdRN%2FVWs%3D&reserved=0 Please help support this email list: https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C3f171467c8c94095c83e08d67e949db9%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636835574096605433&sdata=SRNt2XVRPlEOMAyW0tzEBxSztTJrYOTep%2B8XjgpH18U%3D&reserved=0 Message delivered to woyb10051 at outlook.com From a.durbin at msn.com Sun Jan 20 07:14:01 2019 From: a.durbin at msn.com (Andy Durbin) Date: Sun, 20 Jan 2019 12:14:01 +0000 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. Message-ID: "Hope you check your windows setting, you might be surprised." No surprises here. I have never had my rig CODEC as the default sound playback device. I don't have Windows 10 but, in every earlier version I have used, it is easy to ensure that the rig CODEC is not the default playback device. Simply right click the speaker icon in the system tray and select playback devices. You will see a new "Sound" window with all playback devices listed. One will be shown as the default device. Ensure the default device is not your rig CODEC. This action does not require WSJT-X, or any other application, to be running since the selection of the default sound device is not application specific. If, after you right click the speaker icon, you select volume mixer you should then see "Device" on the left side of the mixer window. Click the device menu and select the rig CODEC. You will see all the apps that are connected to that CODEC as long as they are running and have recently produced a sound output. The assignment of the rig CODEC to WSJT-X is done simply in the WSJT-X file/settings/audio menu. As with all digital mode applications, selection of the correct device is easier if the rig CODEC has been assigned a meaningful name. Mine is called "TS-590 RX" and "TS-590 TX". The name can be changed by speaker icon right click, playback devices, select the rig CODEC then properties, edit name in name field. Perhaps someone would confirm that all these steps are also applicable in Win 10. Andy, k3wyc From mike.harris at horizon.co.fk Sun Jan 20 07:31:51 2019 From: mike.harris at horizon.co.fk (Mike Harris) Date: Sun, 20 Jan 2019 09:31:51 -0300 Subject: [Elecraft] Frequency Anomaly -- Tamed In-Reply-To: References: Message-ID: Remember that what you have set is a fixed number representing the TCXO frequency that is correct only at the time you adjusted it. The reason being is that the TCXO frequency drifts. Mine will move +48Hz from a cold start to plus four hours. Thereafter is hardly moves. This drift will result in the display frequency and the true frequency diverging. In my unit I have concluded that setting REF CAL after about an hours warm up is a reasonable compromise. However, I guess not all TCXOs will drift the same way or at the same rate. The biggest driver is likely front panel temperature because the TXCO is located within that environment. My K3 front panel is pretty loaded with the sub RX dsp board and the DVK. It increases from +24C at switch on and reaches +39C after a couple of hours. This is easily recorded and from that you can judge what would be a suitable warm up period before doing the Method 2 calibration. All this was determined when I started using a 10MHz GPS disciplined reference and the K3 REF LOCK option. Regards, Mike VP8NO On 19/01/2019 22:36, Richard wrote: > To all who jumped in to help ? thanks. > > I just performed Method 2 as found on page 53 of the K3s Owner's Manual, and it made a huge difference all around. Wish I could paste it here. > > Cheers! > Richard Kunc ? W4KBX From dk7cy at bingo-ev.de Sun Jan 20 08:15:11 2019 From: dk7cy at bingo-ev.de (Wolfgang Peringer) Date: Sun, 20 Jan 2019 14:15:11 +0100 Subject: [Elecraft] Elecraft K2 external amplifier Message-ID: Hello: I have built and installed the K60XV 60m and transverter adapter in my K2. I was using the 8-pin female connector (RF-J13) for my amplifier keying circuit (N0SS design). As this connector is now used for the KX60XV I am looking for a way to key an external amplifier. 73s Wolfgang dk7cy From bjablonski at att.net Sun Jan 20 08:17:21 2019 From: bjablonski at att.net (Barry Jablonski) Date: Sun, 20 Jan 2019 08:17:21 -0500 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: References: Message-ID: <48a7ad29-b0bc-9eb3-3863-07064a3be6a3@att.net> Hi Andy, In Win10 it's a two step procedure to get to "playback devices". First right click on the speaker icon and select "Open sound settings". Then click on "Sound Control Panel" on the right side of the Sound window. Barry WB2ZXJ From donwilh at embarqmail.com Sun Jan 20 08:54:05 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 20 Jan 2019 08:54:05 -0500 Subject: [Elecraft] Elecraft K2 external amplifier In-Reply-To: References: Message-ID: Wolfgang, Connect K60XV J2 pin 2 to a jack and you will have an Amp Keying output. There is just barely room to mount an RCA jack on the lower rear panel. Look for a clear spot near the Key jack and drill a hole as close to the top of the panel as possible while still allowing the jack to not project above the top of the panel. 73, Don W3FPR On 1/20/2019 8:15 AM, Wolfgang Peringer wrote: > Hello: > > I have built and installed the K60XV 60m and transverter adapter in my > K2. I was using the 8-pin female connector (RF-J13) for my amplifier > keying circuit (N0SS design). As this connector is now used for the > KX60XV I am looking for a way to key an external amplifier. > From donwilh at embarqmail.com Sun Jan 20 08:22:07 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 20 Jan 2019 08:22:07 -0500 Subject: [Elecraft] K2 VCO Alignment T5 L30 In-Reply-To: References: Message-ID: <1dd2638b-1253-b013-fbc4-2b311a2725e4@embarqmail.com> Tom, Good work on the VFO. Before you replace U11, measure the resistance from the wire on the carrier board to the lead of the SMD IC.? Do that for all pins.? The PC traces on the carrier board are not thru-plated holes and sometimes become damaged with soldering. 73, Don W3FPR On 1/19/2019 6:35 PM, K2bew wrote: > Don et al, > > I tried a 15pf cap ( what I had on hand) at the source of Q19 to > ground and I got .025v on R30 that did not change with the adjustment > of L30, essentially no voltage. > So, I took it off and it went back to 4.5 volts. So, then I tried > Vicen?, EA3ADV's suggestion and I put 17 turns on the red wire of T5. > That got me a voltage of 8.5V on R30 with L30 bottomed out that I > was?able to easily back off to a stable 6 volts. > I went ahead and did the voltage tests on the other bands and had a > nice range of 1.844 to 6 volts as my low and high on the VCO. > So, that's?all set. > > However, new problem. I went on to the test the BFO and I have 0000.04 > kHz. on TP2, so it's?not working. > I went?to the trouble shooting guide and I have 0.058 Vrms on pin 6 of > U11 with the RF probe. > Looking at the archives of the reflector?that would indicate that U11 > is bad?and I need a replacement, correct? or are there other?things I > should look at first? > The good thing is I'm becoming very accustomed?to the radio and > enjoying the trouble?shooting. > Thanks for all the help, I really appreciate?it. > > 73, > Tom Bewick, K2BEW > From rmcgraw at blomand.net Sun Jan 20 09:44:54 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sun, 20 Jan 2019 08:44:54 -0600 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: References: Message-ID: This all works with Windows 10 Pro.??? I've not used the Home edition. 73 Bob, K4TAX On 1/20/2019 6:14 AM, Andy Durbin wrote: > "Hope you check your windows setting, you might be surprised." > > No surprises here. I have never had my rig CODEC as the default sound playback device. I don't have Windows 10 but, in every earlier version I have used, it is easy to ensure that the rig CODEC is not the default playback device. Simply right click the speaker icon in the system tray and select playback devices. You will see a new "Sound" window with all playback devices listed. One will be shown as the default device. Ensure the default device is not your rig CODEC. This action does not require WSJT-X, or any other application, to be running since the selection of the default sound device is not application specific. > > If, after you right click the speaker icon, you select volume mixer you should then see "Device" on the left side of the mixer window. Click the device menu and select the rig CODEC. You will see all the apps that are connected to that CODEC as long as they are running and have recently produced a sound output. > > The assignment of the rig CODEC to WSJT-X is done simply in the WSJT-X file/settings/audio menu. As with all digital mode applications, selection of the correct device is easier if the rig CODEC has been assigned a meaningful name. Mine is called "TS-590 RX" and "TS-590 TX". The name can be changed by speaker icon right click, playback devices, select the rig CODEC then properties, edit name in name field. > > Perhaps someone would confirm that all these steps are also applicable in Win 10. > > Andy, k3wyc > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From dick at elecraft.com Sun Jan 20 11:51:25 2019 From: dick at elecraft.com (Dick Dievendorff) Date: Sun, 20 Jan 2019 08:51:25 -0800 Subject: [Elecraft] KPA-1500 ATU BYP light always on In-Reply-To: References: Message-ID: <416A6F05-F9EE-48A4-897F-5F5B6BF19718@elecraft.com> I initially sent this to just Pete, but found other posts: The intent is that the ATU IN LED be illuminated when the ATU is switched in with the ATU MODE button, and the ATU BYP LED is illuminated when the ATU MODE is BYPASS and also when the current ATU setting, with ATU IN, is ?bypassed?. Each ATU full search tune checks the bypassed setting first, and if the SWR with the ATU bypassed is good enough, then ?bypassed? is stored as the preferred ATU setting for that frequency. ?Good enough? defaults to 1.2 to 1, but you can change that with an SWR bypass threshold menu item. For example, my 20 meter beam is resonant low in the band. Down there both ATU LEDs are lit. Up the band only the IN LED is lit. I don?t have to remember to turn the ATU off at the low end, it remembers the bypassed setting. Early firmware lit one LED or the other, indicating ATU MODE. Field tester feedback suggested lighting both LEDs when the ATU function was switched in and the current ATU setting is bypassed. 73 de Dick, K6KR > On Jan 19, 2019, at 06:46, N4ZR wrote: > > Just got my KPA-1500, and it seems to work great except that the ATU BYP light is always illuminated. The ATU operates normally when I light the IN light with the ATU Mode switch and apply drive. I can't find anything in the manual about this. > From ed.n3cw at gmail.com Sun Jan 20 12:17:21 2019 From: ed.n3cw at gmail.com (Ed G) Date: Sun, 20 Jan 2019 12:17:21 -0500 Subject: [Elecraft] K3 SWR Question3 In-Reply-To: References: Message-ID: <5c44ad21.1c69fb81.1d89d.469e@mx.google.com> Hello, My K3 is exhibiting some SWR meter behavior I don?t quite understand. To eliminate any possible effects of antennas or cabling, I hooked a Palstar DL2K dummy load directly to the K3 antenna connector. All bands except 40 meters seem fine, with SWR reading as you would expect with a dummy load. The anomaly I am seeing is that SWR as shown on the K3 meter looks fine at 7.01 MHz (approx. 1.2:1), but as I go up in frequency, the SWR as shown on the K3 meter rises. When I transmit into the dummy load on 7.298 MHz, the K3 meter reads almost 3:1. I can switch in the K3 internal tuner and bring the SWR down to 1:1. I also tried an older Cantenna dummy load with the same puzzling results. Any ideas as to what may be causing this 40 meter only problem? I first noticed this problem during NAQP SSB when using my Steppir, which of course retunes itself as I change frequency. When going from the low part of the phone band to the high part on 40 meters, I noticed SWR increasing on the K3 meter, even though it was not increasing and stayed at 1.2:1 on my inline LP-100A. The K3 also started to fold back power. That prompted me to do the further testing with the dummy load as I discussed above. --Ed? Sent from Mail for Windows 10 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus From Gary at ka1j.com Sun Jan 20 12:40:32 2019 From: Gary at ka1j.com (Gary Smith) Date: Sun, 20 Jan 2019 12:40:32 -0500 Subject: [Elecraft] K3s can only transmit wsjt if the K3s codec is windows default. In-Reply-To: References: Message-ID: <5C44B290.18851.332AB77@Gary.ka1j.com> Perhaps the point of my original post has been missed. The only way I could get RF out of the K3s was to assign the K3s codec as my default in the sound settings. If I did not do this in the windows sound control panel, the K3s would go into transmit mode with WSJT-x but zero output. Doing this allowed computer sounds to be transmitted with WSJT-X, maybe with AFSK. Yes, in the WSJT-X software I always had the K3s codec checked. Until I made this change in the windows app volume and device properties page 2 days ago, that was the only way I could transmit with WSJT-X. I cannot be the only person with this issue. This is not a trivial issue, we all want our signals to be clean and for months I had no idea I was occasionally transmitting garbage with my K3s. I'm sure others here are doing the same. 73, Gary KA1J > "Hope you check your windows setting, you might be surprised." > > No surprises here. I have never had my rig CODEC as the default sound > playback device. I don't have Windows 10 but, in every earlier > version I have used, it is easy to ensure that the rig CODEC is not > the default playback device. Simply right click the speaker icon in > the system tray and select playback devices. You will see a new > "Sound" window with all playback devices listed. One will be shown as > the default device. Ensure the default device is not your rig CODEC. > This action does not require WSJT-X, or any other application, to be > running since the selection of the default sound device is not > application specific. > > If, after you right click the speaker icon, you select volume mixer > you should then see "Device" on the left side of the mixer window. > Click the device menu and select the rig CODEC. You will see all the > apps that are connected to that CODEC as long as they are running and > have recently produced a sound output. > > The assignment of the rig CODEC to WSJT-X is done simply in the WSJT-X > file/settings/audio menu. As with all digital mode applications, > selection of the correct device is easier if the rig CODEC has been > assigned a meaningful name. Mine is called "TS-590 RX" and "TS-590 > TX". The name can be changed by speaker icon right click, playback > devices, select the rig CODEC then properties, edit name in name > field. > > Perhaps someone would confirm that all these steps are also applicable > in Win 10. > > Andy, k3wyc > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to gary at ka1j.com > From edauer at law.du.edu Sun Jan 20 13:20:59 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Sun, 20 Jan 2019 18:20:59 +0000 Subject: [Elecraft] KPA500 and KAT500 - for sale Message-ID: <63F0CA52-6B5C-4ED8-BE07-0B295B9185D1@law.du.edu> This is a repeat post. The original may have set the price too high, so I have reduced it a couple of hundred. If this doesn?t work I?ll keep it as a standby. Here ?tis, on the same terms as the original ? namely no Pay Pal, shipment on receipt of payment, I will do packing and buyer pays shipping. CONUS only, and for sale to hams only. Located in Denver in case anyone wants to come see them. KPA500 Amp (kit built s/n 0651), and KAT500 Antenna Tuner (kit built s/n 0452), with connecting cables and cables for connection to K3. Cosmetically and electrically excellent, always kept covered, no smoking environment ever, never used outdoors. $1,950 for the pair. I might sell the tuner separately, but I cannot sell the amp separately. Due to a planned downsizing of my principal residence I also have 3 K2 systems and some other stuff which I will post separately, after I confirm all of the various options in each of the K2s. The plan is to keep the K3/KPA1500 at my second QTH, where the antennas and the wildlife are, and to run them remotely from a high-rise apartment in the city. At a club meeting the other night I asked a fellow who has been doing remote operations how he would feel about running a 1500 watt amp in a remote forest from 100 miles away. He said, ?Install sprinklers.? There will be a learning curve for me to tackle a remote setup. Expect to see pleas for help later this year. Ted, KN1CBR Edward A. Dauer, LL.B. M.P.H. Dean Emeritus and Professor Emeritus of Law University of Denver From cairndhu at mac.com Sun Jan 20 13:32:07 2019 From: cairndhu at mac.com (Bruce McCartney) Date: Sun, 20 Jan 2019 18:32:07 +0000 Subject: [Elecraft] New K2 build Message-ID: I have taken advantage of Elecraft?s National Hobby Month offer and now have a K2 plus KSB2 SSB Option, KNB2 Noise Blanker, KAT2 20W Internal ATU to build. My query is: do I build first the K2 transceiver as CW only, then add in the options as completed? From reading the manuals, components have to be removed from the completed K2 before the addition of some options. It seems a shame to undo work. Old blogs mention a Rework Eliminator kit which would have been a solution to my dilemma, but these are long since discontinued. So, do I build first and add options later? I'd be pleased to hear from other K2 builders. I must add a huge kudos to both Elecraft and UPS - California to Scotland - 46 hours from ordering to delivery! What service! Thank you. Bruce GM4BDJ From FlatHat at comcast.net Sun Jan 20 13:36:25 2019 From: FlatHat at comcast.net (Richard) Date: Sun, 20 Jan 2019 13:36:25 -0500 Subject: [Elecraft] IC-706MkIIG Inquiries Message-ID: If you are knowledgeable about the Icom IC-706MkIIG please contact me directly. Cheers. Richard - W4KBX FlatHat at comcast.net From ko5v at earthlink.net Sun Jan 20 14:00:07 2019 From: ko5v at earthlink.net (Jim KO5V) Date: Sun, 20 Jan 2019 12:00:07 -0700 (GMT-07:00) Subject: [Elecraft] New K2 build Message-ID: <1642207490.3197.1548010807226@wamui-moana.atl.sa.earthlink.net> Hi Bruce, You're gonna' love building this kit! I just finished my 3rd one, plus the 100 W amp and tuner, and I have been having a lot of fun with it the last week or so. Yes, you want to build the basic cw kit first, then add options but if you read the SSB kit's manual (and the others), it shows you where you can add a few components during the initial build, so a ton of rework isn't necessary when you want to add SSB. The rework eliminators were a nice addition, but not necessary. I used them on the first one, but not this time. I've finally finished and installed all of the K2's options, and there was no complicated rework for any of them - that was my experience, anyway. There is great support on this list, and at least in my experience, nobody will criticize you for dumb questions - at least in public ;) Enjoy, and don't be shy about asking for help. 73, Jim KO5V Edgewood, NM "I have taken advantage of Elecraft?s National Hobby Month offer and now have a K2 plus KSB2 SSB Option, KNB2 Noise Blanker, KAT2 20W Internal ATU to build. My query is: do I build first the K2 transceiver as CW only, then add in the options as completed? >From reading the manuals, components have to be removed from the completed K2 before the addition of some options. It seems a shame to undo work. Old blogs mention a Rework Eliminator kit which would have been a solution to my dilemma, but these are long since discontinued. So, do I build first and add options later? I'd be pleased to hear from other K2 builders. I must add a huge kudos to both Elecraft and UPS - California to Scotland - 46 hours from ordering to delivery! What service! Thank you. Bruce GM4BDJ" ______ From elanzl at sbcglobal.net Sun Jan 20 14:04:25 2019 From: elanzl at sbcglobal.net (Eric Lanzl) Date: Sun, 20 Jan 2019 19:04:25 +0000 (UTC) Subject: [Elecraft] Elecraft Net References: <217142700.651900.1548011065561.ref@mail.yahoo.com> Message-ID: <217142700.651900.1548011065561@mail.yahoo.com> Here is the Elecraft Net Log for January 13, 2019 WM6P Steve GA K3S 11453 Relay stationK7BRR Bill? AZ K3S 10939N7BDL Terry AZ K3S 10373KS6F Guy CA K3S 10650K8NU/7 Carl OH K3S 10996 through remote station W1NGA Al CO K3 5765N6PGQ Bob CA K3 5891NS7P Phil OR K3 1826 Relay stationW7QHD Kurt AZ KX3 8697 15 wattsK6WDE/7 Dave AZ KX3 4599AE6JV Bill CA K3 6299W2RWA Dick NY K3 2603WE6R Keith CA K3 ? Works at the mother shipAI4VZ George GA K3 2412K1NW Brian RI K3 4974AD1G Dick MA K2 ?W7REK Glenn AZ K3 8243AE1E Ken TX KX3 9582N2TNQ Glen NJ K3 5279N4NRW Roger SC K3 1318ZL1PWD Peter NZ K3 139N0MPM Mike IA K3S 10514K7JG John WA K3 3519WB9JNZ Eric IL K3 4017 w/KPA1500NC0JW Jim CO KX3 1356W7HSG Ralph AZ K3/KPA500/KAT500 via Cactus Intertie From elanzl at sbcglobal.net Sun Jan 20 14:37:10 2019 From: elanzl at sbcglobal.net (Eric Lanzl) Date: Sun, 20 Jan 2019 19:37:10 +0000 (UTC) Subject: [Elecraft] Elecraft Net log for Jan, 20, 2019 References: <1806526272.655545.1548013030829.ref@mail.yahoo.com> Message-ID: <1806526272.655545.1548013030829@mail.yahoo.com> Here is the log of stations checking in on this date: WB9JNZ ?? ? ?? Eric? ?? ? ? IL?? ? ? K3? ? ? ? 4017??? Net ControlN6JW/M ??????? John?? ? ?? CA?? ? KX3?? ? ?? 515K8NU?????????? ? Carl????? ?? OH???? Yaesu????? operating remote in Washington from Ohio,? Relay Station N4NRW?????? ?? Roger?? ?? SC?? ? K3????? ?? 1318??? Relay StationKO5V???????????? Jim????? ?? NM???? K2????? ?? 7225K4GCJ??????? ?? Jerry???? ?? NC???? K3????? ?? 1597N7BDL???????? ? Terry??????? AZ????? K3S???? 10373K6FW??????????? Frank??? ?? CA ? ? K3S???? 11672WA5DSS?????? Bill??????? ?? TX? ? ? K3S???? 10835KS6F???????????? Guy???????? CA ? ? K3S???? 10650KT0DX??????? ? ? Steve?? ?? CO? ?? K3????????? 6376K7JG??????? ? ? ? John??? ? ? WA ?? KX3?????? 3519W9PCS???? ? ?? Paul???????? WI???? K3S???? 11103WD0AKZ??????? George ? ? MN? ? KX3??????? 4830W7QHD???? ? ? Kurt????? ? ? AZ???? Drake TwinsK6SBA????? ? ? David?? ? ?? CA ? ? K3?????????? 535N0MPM??? ? ?? Mike???????? IA????? KX3??????? 8820W7REK??? ? ?? Glenn?????? AZ? ??? K3?????? ? 2843K6WDE???????? Dave??????? AZ????? K3S????? 11140K9YEQ???????? Bill??????????? WI????? K3S???? 11140????? 1ST TIME CHECK IN KC5RY????????? George? ?? TX??? ? K3???????? 5208AE6JV????? ? ?? Bill?????????? AZ? ?? K3??????? ? 6299KI7MJU????? ?? Frank??????? AZ? ?? Helicrafters radio?K6KWI??????? ? Neil??????? ?? CA?? ? Icom 746 ProKI6DL??????????? Dennis? ? ? ID??? ? TS 440????????????????1ST TIME CHECK IN KE5SO??? ? ?? Joe?????? ? ? CO? ?? K3???????? 1503WA0BEU?? ?? Keith?? ? ?? CO? ?? KX3???? ?? 7048 From donwilh at embarqmail.com Sun Jan 20 15:16:14 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 20 Jan 2019 15:16:14 -0500 Subject: [Elecraft] New K2 build In-Reply-To: References: Message-ID: <662b48b2-e7d2-11eb-ba48-3d274d456f08@embarqmail.com> Bruce, Yes, build the K2 first - there is a point where the manual tells you that you can add such things as the Front Panel components for the KSB2, and headers for other options. Do NOT attempt to add parts of the K60XV option until you have finished building and testing the basic K2. There are not really many parts to remove - C167 for the KSB2 plus 2 jumpers (which can be cut if you prefer. For the K160RX only a jumper removal and the addition of 3 capacitors. For the KNB2, one jumper and remove 3 resistors. The KAF2 requires only 2 jumpers to be removed (those cannot be cut), and the K60XV requires only the removal and replacement of one capacitor. You must have done something to expedite that order - UPS Ground delivery here in the US is usually 5 to 7 days unless it is to the same state or one adjacent where the delivery is next day to 3 days. 73, Don W3FPR On 1/20/2019 1:32 PM, Bruce McCartney via Elecraft wrote: > I have taken advantage of Elecraft?s National Hobby Month offer and now have a K2 plus KSB2 SSB Option, KNB2 Noise Blanker, KAT2 20W Internal ATU to build. > > My query is: do I build first the K2 transceiver as CW only, then add in the options as completed? > > From reading the manuals, components have to be removed from the completed K2 before the addition of some options. It seems a shame to undo work. > > Old blogs mention a Rework Eliminator kit which would have been a solution to my dilemma, but these are long since discontinued. > > So, do I build first and add options later? I'd be pleased to hear from other K2 builders. > > I must add a huge kudos to both Elecraft and UPS - California to Scotland - 46 hours from ordering to delivery! What service! > From pvandyke1953 at gmail.com Sun Jan 20 15:42:39 2019 From: pvandyke1953 at gmail.com (Paul Van Dyke) Date: Sun, 20 Jan 2019 15:42:39 -0500 Subject: [Elecraft] Elecraft Net log for Jan, 20, 2019 In-Reply-To: <1806526272.655545.1548013030829@mail.yahoo.com> References: <1806526272.655545.1548013030829.ref@mail.yahoo.com> <1806526272.655545.1548013030829@mail.yahoo.com> Message-ID: Eric ... They had my call and state wrong ... here is the corrected list Good Job and Thank you all for the work Paul WB9JNZ Eric IL K3 4017 Net Control N6JW/M John CA KX3 515 K8NU Carl OH Yaesu operating remote in Washington from Ohio, Relay Station N4NRW Roger SC K3 1318 Relay Station KO5V Jim NM K2 7225 K4GCJ Jerry NC K3 1597 N7BDL Terry AZ K3S 10373 K6FW Frank CA K3S 11672 WA5DSS Bill TX K3S 10835 KS6F Guy CA K3S 10650 KT0DX Steve CO K3 6376 K7JG John WA KX3 3519 KB9AVO Paul IN K3S 11103 WD0AKZ George MN KX3 4830 W7QHD Kurt AZ Drake Twins K6SBA David CA K3 535 N0MPM Mike IA KX3 8820 W7REK Glenn AZ K3 2843 K6WDE Dave AZ K3S 11140 K9YEQ Bill WI K3S 11140 1ST TIME CHECK IN KC5RY George TX K3 5208 AE6JV Bill AZ K3 6299 KI7MJU Frank AZ Helicrafters radio? K6KWI Neil CA Icom 746 Pro KI6DL Dennis ID TS 440 1ST TIME CHECK IN KE5SO Joe CO K3 1503 WA0BEU Keith CO KX3 7048 On Sun, Jan 20, 2019 at 2:38 PM Eric Lanzl wrote: > Here is the log of stations checking in on this date: > WB9JNZ Eric IL K3 4017 Net ControlN6JW/M > John CA KX3 515K8NU Carl > OH Yaesu operating remote in Washington from Ohio, Relay Station > N4NRW Roger SC K3 1318 Relay > StationKO5V Jim NM K2 7225K4GCJ > Jerry NC K3 1597N7BDL Terry AZ > K3S 10373K6FW Frank CA K3S 11672WA5DSS > Bill TX K3S 10835KS6F Guy CA > K3S 10650KT0DX Steve CO K3 6376K7JG > John WA KX3 3519W9PCS Paul WI > K3S 11103WD0AKZ George MN KX3 4830W7QHD > Kurt AZ Drake TwinsK6SBA David CA > K3 535N0MPM Mike IA KX3 8820W7REK > Glenn AZ K3 2843K6WDE Dave AZ > K3S 11140K9YEQ Bill WI K3S 11140 1ST > TIME CHECK IN > KC5RY George TX K3 5208AE6JV > Bill AZ K3 6299KI7MJU Frank AZ > Helicrafters radio?K6KWI Neil CA Icom 746 > ProKI6DL Dennis ID TS 440 1ST TIME > CHECK IN > KE5SO Joe CO K3 1503WA0BEU Keith > CO KX3 7048 > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to pvandyke1953 at gmail.com From nr4c at widomaker.com Sun Jan 20 18:03:13 2019 From: nr4c at widomaker.com (Nr4c) Date: Sun, 20 Jan 2019 18:03:13 -0500 Subject: [Elecraft] IC-706MkIIG Inquiries In-Reply-To: References: Message-ID: <66425EB9-000A-41D8-83C9-FD46BAFC85E9@widomaker.com> I?ve dealt with a few. What?s you question. Sent from my iPhone ...nr4c. bill > On Jan 20, 2019, at 1:36 PM, Richard wrote: > > If you are knowledgeable about the Icom IC-706MkIIG please contact me directly. > > Cheers. > > Richard - W4KBX > > FlatHat at comcast.net > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From rocketnj at gmail.com Sun Jan 20 18:05:07 2019 From: rocketnj at gmail.com (rocketnj at gmail.com) Date: Sun, 20 Jan 2019 18:05:07 -0500 Subject: [Elecraft] KPA1500 loose 3K Ohm/3 watt resistor Message-ID: <005801d4b114$967a0b70$c36e2250$@gmail.com> Hi All Went to move the amp today and heard something loose in the PA deck on the KPA1500. I removed the bottom cover to find a 3 K Ohm, 3 watt resistor laying loose to the side of the PA board. There is indication that the resistor has been heated. Checking the resistor with my Fluke 77 shows it is still within tolerance. Any ideas where this goes on the board? (PA/Filter/other)? I've looked at the boards and cannot see where it came off. I also looked at the pictures Elecraft submitted to the FCC and they do not show it. Here's a link of a picture of the resistor. https://photos.app.goo.gl/u5tcd2kQa2GJaLd19 Hoping someone can answer this in case Elecraft is off tomorrow for MLK Jr. Holiday. 73 Dave wo2x From elanzl at sbcglobal.net Sun Jan 20 18:27:14 2019 From: elanzl at sbcglobal.net (Eric Lanzl) Date: Sun, 20 Jan 2019 23:27:14 +0000 (UTC) Subject: [Elecraft] Corrected list for 1-20-2019's Elecraft net References: <983218098.693811.1548026834614.ref@mail.yahoo.com> Message-ID: <983218098.693811.1548026834614@mail.yahoo.com> WB9JNZ ?? ? ?? Eric??? ? ? IL?? ? ? K3? ? ?? 4017??? Net Control N6JW/M ???????John?? ? ?? CA?? ? KX3??? ?? 515 K8NU??????????? Carl????? ??OH???? Yaesu????? operating remotein Washington from Ohio,? Relay Station N4NRW?????? ??Roger?? ?? SC?? ?K3????? ?? 1318??? RelayStation KO5V????????????Jim????? ?? NM????K2????? ?? 7225 K4GCJ??????? ??Jerry???? ?? NC????K3????? ?? 1597 N7BDL???????? ?Terry???????AZ????? K3S???? 10373 K6FW???????????Frank??? ?? CA ? ? K3S????11672 WA5DSS??????Bill??????? ?? TX? ?? K3S???? 10835 KS6F????????????Guy???????? CA ? ?K3S???? 10650 KT0DX??????? ? ?Steve?? ?? CO? ??K3????????? 6376 K7JG??????? ? ?? John??? ? ? WA ??KX3?????? 3519 KB9AVO???? ? ??Paul???????? IN???K3S???? 11103 WD0AKZ??????? George? ? MN? ? KX3???????4830 W7QHD???? ? ?Kurt????? ? ? AZ????Drake Twins K6SBA????? ? ?David?? ? ?? CA ? ?K3?????????? 535 N0MPM??? ? ??Mike????????IA????? KX3???????8820 W7REK??? ? ??Glenn?????? AZ? ???K3?????? ? 2843 K6WDE???????? Dave???????AZ????? K3S????? 11140 K9YEQ????????Bill???????????WI????? K3S????11140????? 1ST TIME CHECK IN KC5RY?????????George? ?? TX??? ?K3???????? 5208 AE6JV????? ? ??Bill?????????? AZ??? K3??????? ? 6299 KI7MJU????? ??Frank??????? AZ? ?? Helicraftersradio? K6KWI??????? ?Neil??????? ?? CA??? Icom 746 Pro KI6DL???????????Dennis? ? ? ID??? ? TS440????????????????1STTIME CHECK IN? KE5SO??? ? ??Joe?????? ? ? CO? ??K3???????? 1503 WA0BEU?? ?? Keith?? ??? CO? ?? KX3???? ?? 7048 From a.durbin at msn.com Sun Jan 20 18:39:19 2019 From: a.durbin at msn.com (Andy Durbin) Date: Sun, 20 Jan 2019 23:39:19 +0000 Subject: [Elecraft] KPA1500 loose 3K Ohm/3 watt resistor Message-ID: "I've looked at the boards and cannot see where it came off. I also looked at the pictures Elecraft submitted to the FCC and they do not show it." What doesn't work that used to work? If nothing, then maybe they slipped it in there just to confuse you. From the photo it looks as though it was cut out of whatever circuit it used to belong in. I've heard of SMT components dropping of boards but it should be impossible for a properly installed wire ended component to fall off. ( I deliberately said wire ended rather than through hole because I still remember tag strip construction). Andy, k3wyc From rocketnj at gmail.com Sun Jan 20 19:08:08 2019 From: rocketnj at gmail.com (Dave) Date: Sun, 20 Jan 2019 19:08:08 -0500 Subject: [Elecraft] KPA1500 loose 3K Ohm/3 watt resistor In-Reply-To: References: Message-ID: <6CD6C0B8-51A8-4285-B55B-E85F03D0E6B9@gmail.com> Hi Andy The amp appears to be working properly. The leads of the resistor look like they are bent at the end as if it was soldered to surface of the board and not through hole. Will be interesting what comes out of this. Dave wo2x Sent from my waxed string and tin cans. > On Jan 20, 2019, at 6:39 PM, Andy Durbin wrote: > > "I've looked at the boards and cannot see where it came off. I also looked at the pictures Elecraft submitted to the FCC and they do not show it." > > What doesn't work that used to work? If nothing, then maybe they slipped it in there just to confuse you. From the photo it looks as though it was cut out of whatever circuit it used to belong in. I've heard of SMT components dropping of boards but it should be impossible for a properly installed wire ended component to fall off. ( I deliberately said wire ended rather than through hole because I still remember tag strip construction). > > Andy, k3wyc > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rocketnj at gmail.com From kevinr at coho.net Sun Jan 20 21:00:23 2019 From: kevinr at coho.net (kevinr) Date: Sun, 20 Jan 2019 18:00:23 -0800 Subject: [Elecraft] Elecraft CW Net Report Message-ID: <83f7961b-43d5-0dea-9548-bab83deb348e@coho.net> Good Evening, ?? Both bands were crystal clear and quiet.? But neither were very productive.? The inclement weather of the Midwest may be part of it.? Even Central California was getting its share. Thunderstorms and a tornado.? Things are quieter here but it has been steadily raining for the last ?? days.? It becomes normal after a while so I use it to my advantage.? Get ready for the rainy season then spend it affixed to a keyboard. ?? Ken had the coolest temperature on both bands.? He mentioned more snow is coming but it is January and he lives in North Dakota; there is no mystery involved.? Dave told me of white out conditions but only a few inches of snow from it.? Roy also had snow, enough to get his snowblower active.? However, when Mike mentioned ice on his antennas I shivered.? Snow is fine.? Rain is OK.? Ice is bad.? But I think hearing about a tornado in Central California was the most surprising. ? On 14049.5 kHz at 2200z: W0CZ - Ken - ND??? 4 degrees and sunny K6XK - Roy - IA??? 6 degrees K4TO - Dave - KY?? 16 degrees and sunny ? On 7047 kHz at 0000z: W0CZ - Ken - ND???? 0 degrees K4TO - Dave - KY K6PJV - Dale - CA???? Thunderstorms and a Tornado K0DTJ - Brian - CA?? 53 degrees and breezy AB9V - Mike - IN???? 10 degrees ice then 4" snow ?? Until next week, stay well and stay warm, ????? Kevin.? KD5ONS _ From rcrgs at verizon.net Sun Jan 20 23:05:33 2019 From: rcrgs at verizon.net (Robert G Strickland) Date: Mon, 21 Jan 2019 04:05:33 +0000 Subject: [Elecraft] New K2 build In-Reply-To: References: Message-ID: <58bff75f-6197-f0a3-db5d-9143f5176460@verizon.net> Bruce... Congratulations! Don is the one to answer your specific question(s). I'm just glad for you and the fun you're about to have. It's just a great radio, and I'm sure that, in the end, you will be much more than satisfied with yourself and with the radio. ...robert On 1/20/2019 18:32, Bruce McCartney via Elecraft wrote: > I have taken advantage of Elecraft?s National Hobby Month offer and now have a K2 plus KSB2 SSB Option, KNB2 Noise Blanker, KAT2 20W Internal ATU to build. > > My query is: do I build first the K2 transceiver as CW only, then add in the options as completed? > > From reading the manuals, components have to be removed from the completed K2 before the addition of some options. It seems a shame to undo work. > > Old blogs mention a Rework Eliminator kit which would have been a solution to my dilemma, but these are long since discontinued. > > So, do I build first and add options later? I'd be pleased to hear from other K2 builders. > > I must add a huge kudos to both Elecraft and UPS - California to Scotland - 46 hours from ordering to delivery! What service! > > Thank you. > > Bruce > > GM4BDJ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rcrgs at verizon.net > -- Robert G Strickland, PhD ABPH - KE2WY rcrgs at verizon.net.usa Syracuse, New York, USA From frantz at pwpconsult.com Mon Jan 21 00:15:58 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Sun, 20 Jan 2019 21:15:58 -0800 Subject: [Elecraft] Elecraft Net log for Jan, 20, 2019 In-Reply-To: Message-ID: Also, I am in CA and not AZ. Below is an updated list. BTW, my 8 band vertical which I usually use to checkin to the net with 1000W was not working -- I suspect water problems -- so I used my 160M dipole at 100W. Yea for the K3's tuner. 73 Bill AE6JV On 1/20/19 at 12:42 PM, pvandyke1953 at gmail.com (Paul Van Dyke) wrote: >Eric ... They had my call and state wrong ... here is the corrected list > >Good Job and Thank you all for the work Paul WB9JNZ Eric IL K3 4017 Net Control N6JW/M John CA KX3 515 K8NU Carl OH Yaesu operating remote in Washington from Ohio, Relay Station N4NRW Roger SC K3 1318 Relay Station KO5V Jim NM K2 7225 K4GCJ Jerry NC K3 1597 N7BDL Terry AZ K3S 10373 K6FW Frank CA K3S 11672 WA5DSS Bill TX K3S 10835 KS6F Guy CA K3S 10650 KT0DX Steve CO K3 6376 K7JG John WA KX3 3519 KB9AVO Paul IN K3S 11103 WD0AKZ George MN KX3 4830 W7QHD Kurt AZ Drake Twins K6SBA David CA K3 535 N0MPM Mike IA KX3 8820 W7REK Glenn AZ K3 2843 K6WDE Dave AZ K3S 11140 K9YEQ Bill WI K3S 11140 1ST TIME CHECK IN KC5RY George TX K3 5208 AE6JV Bill CA K3 6299 KI7MJU Frank AZ Helicrafters radio? K6KWI Neil CA Icom 746 Pro KI6DL Dennis ID TS 440 1ST TIME CHECK IN KE5SO Joe CO K3 1503 WA0BEU Keith CO KX3 7048 ----------------------------------------------------------------------- Bill Frantz | Security is like Government | Periwinkle (408)356-8506 | services. The market doesn't | 16345 Englewood Ave www.pwpconsult.com | want to pay for them. | Los Gatos, CA 95032 From vk2bj at optusnet.com.au Mon Jan 21 01:50:53 2019 From: vk2bj at optusnet.com.au (Barry Simpson) Date: Mon, 21 Jan 2019 17:50:53 +1100 Subject: [Elecraft] K3 SWR Question3 In-Reply-To: <5c44ad21.1c69fb81.1d89d.469e@mx.google.com> References: <5c44ad21.1c69fb81.1d89d.469e@mx.google.com> Message-ID: Hi Ed I recall having had a similar experience with my K3 some years ago, although it wasn't on 40m. I think it was either 10 or 12m and related to an antenna connected to the ANT 1 socket. Eventually I tracked it down to having previously had an antenna connected to the ANT 2 socket and having used the ATU in the K3 to tune it at that time although I think that there was no antenna on ANT 2 when the problem cropped up. I believe that the feed through between ANT 1 and 2 sockets was sufficient to give a false SWR reading on the K3. It might be worth investigating this and possibly swapping over your antenna/dummy load to the ANT 2 socket to see what happens. I think I eventually just retuned the ATU on ANT 2 with a dummy load in place and the problem went away. Good luck. Barry VK2BJ On Mon, 21 Jan 2019 at 04:17, Ed G wrote: > Hello, > My K3 is exhibiting some SWR meter behavior I don?t quite understand. > To eliminate any possible effects of antennas or cabling, I hooked a > Palstar DL2K dummy load directly to the K3 antenna connector. All bands > except 40 meters seem fine, with SWR reading as you would expect with a > dummy load. The anomaly I am seeing is that SWR as shown on the K3 meter > looks fine at 7.01 MHz (approx. 1.2:1), but as I go up in frequency, the > SWR as shown on the K3 meter rises. When I transmit into the dummy load on > 7.298 MHz, the K3 meter reads almost 3:1. I can switch in the K3 internal > tuner and bring the SWR down to 1:1. > I also tried an older Cantenna dummy load with the same puzzling > results. Any ideas as to what may be causing this 40 meter only problem? > I first noticed this problem during NAQP SSB when using my Steppir, which > of course retunes itself as I change frequency. When going from the low > part of the phone band to the high part on 40 meters, I noticed SWR > increasing on the K3 meter, even though it was not increasing and stayed at > 1.2:1 on my inline LP-100A. The K3 also started to fold back power. That > prompted me to do the further testing with the dummy load as I discussed > above. > --Ed? > > > Sent from Mail for Windows 10 > > > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to vk2bj at optusnet.com.au From ed.n3cw at gmail.com Mon Jan 21 08:34:22 2019 From: ed.n3cw at gmail.com (Ed G) Date: Mon, 21 Jan 2019 08:34:22 -0500 Subject: [Elecraft] K3 SWR Anomaly In-Reply-To: References: <5c44ad21.1c69fb81.1d89d.469e@mx.google.com> Message-ID: <5c45ca5e.1c69fb81.27993.f650@mx.google.com> Hi Barry, I think what I am seeing is related to your experience. I ran through some additional testing. I see perhaps some slight differences between ANT1 and ANT2 positions as far as SWR readings, but nothing significant, at least on 40 meters. I do now see something I?m even more puzzled over. While collecting SWR readings into a dummy load on 10 meters, I initially did see a high (2.0:1) reading on the K3 meter. I switched in the K3 tuner, and brought the SWR down to 1:1. But when I then bypassed the tuner, the low 1:1 SWR remained. This was true for either ANT1 or ANT2. I really don?t understand that. So back to 40 meters, where I first noticed the high SWR anomaly. I thought I would try the tuner again, and then bypass it, to see if SWR would stay low on the K3 meter as it did on 10 meters. It did not. So I still have the anomaly on 40 meters, and it is the same on either ANT1 or ANT2 positions. To summarize: 1. SWR using a dummy load on 40 meters remains constant using an external LP-100A meter, but varies greatly using the K3 meter. As you tune up in frequency on the 40 meter band, the SWR on the K3 meter rises to almost 3:1, and the K3 output power drops back significantly. 2. Antenna tuner settings appear to ?stick? on 10 meters, even when the tuner is bypassed. I believe some users, assuming there are others that have K3s which would exhibit this behavior, may not have noticed this anomaly. I do believe it may be responsible for what some users have noticed when using their K3 with an amp such as the KPA1500. That is, power overshoot. I suspect the K3, at least for me on 40 meters, is folding back power in response to a false SWR reading, and this can be seen in how the KPA1500 amp correspondingly drops back in power as the user transmits. That is perhaps why (again, for my situation) I see the power overshoot only on 40 meters when using my KPA1500. --Ed? Sent from Mail for Windows 10 From: Barry Simpson Sent: Monday, January 21, 2019 1:51 AM To: Ed G; Elecraft Mailing List Subject: Re: [Elecraft] K3 SWR Question3 Hi Ed I recall having had a similar experience with my K3 some years ago, although it wasn't on 40m. I think it was either 10 or 12m and related to an antenna connected to the ANT 1 socket. Eventually I tracked it down to having previously had an antenna connected to the ANT 2 socket and having used the ATU in the K3 to tune it at that time although I think that there was no antenna on ANT 2 when the problem cropped up. I believe that the feed through between ANT 1 and 2 sockets was sufficient to give a false SWR reading on the K3. It might be worth investigating this and possibly swapping over your antenna/dummy load to the ANT 2 socket to see what happens. I think I eventually just retuned the ATU on ANT 2 with a dummy load in place and the problem went away. Good luck. Barry? VK2BJ On Mon, 21 Jan 2019 at 04:17, Ed G wrote: Hello, ? ? ?My K3 is exhibiting some SWR meter behavior I don?t quite understand. To eliminate any possible effects of antennas or cabling, I hooked a Palstar DL2K dummy load directly to the K3 antenna connector. All bands except 40 meters seem fine, with SWR reading as you would expect with a dummy load. The anomaly I am seeing is that SWR as shown on the K3 meter looks fine at 7.01 MHz (approx. 1.2:1), but as I go up in frequency, the SWR as shown on the K3 meter rises. When I transmit into the dummy load on 7.298 MHz, the K3 meter reads almost 3:1.? ?I can switch in the K3 internal tuner and bring the SWR down to 1:1.? ? ? ?I also tried an older Cantenna dummy load with the same puzzling results.? Any ideas as to what may be causing this 40 meter only problem?? I first noticed this problem during NAQP SSB when using my Steppir, which of course retunes itself as I change frequency. When going from the low part of the phone band to the high part on 40 meters, I noticed SWR increasing on the K3 meter, even though it was not increasing and stayed at 1.2:1 on my inline LP-100A.? The K3 also started to fold back power.? That prompted me to do the further testing with the dummy load as I discussed above. --Ed? Sent from Mail for Windows 10 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to vk2bj at optusnet.com.au From norrislawfirm2 at gmail.com Mon Jan 21 09:03:39 2019 From: norrislawfirm2 at gmail.com (Eric Norris) Date: Mon, 21 Jan 2019 06:03:39 -0800 Subject: [Elecraft] K3 SWR Anomaly In-Reply-To: <5c45ca5e.1c69fb81.27993.f650@mx.google.com> References: <5c44ad21.1c69fb81.1d89d.469e@mx.google.com> <5c45ca5e.1c69fb81.27993.f650@mx.google.com> Message-ID: Have you done a TX GAIN CAL procedure? I have found this often solves quirky problems that have cropped up with my K3 over the past 10 years. Also, if you are getting power overshoot, check to be sure your MIC or LINE IN is not set higher than 4 bars with the 5th bar flashing on the ALC meter. 73 Eric WD6DBM On Mon, Jan 21, 2019, 5:36 AM Ed G Hi Barry, > I think what I am seeing is related to your experience. I ran through > some additional testing. I see perhaps some slight differences between ANT1 > and ANT2 positions as far as SWR readings, but nothing significant, at > least on 40 meters... > From edauer at law.du.edu Mon Jan 21 09:55:07 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Mon, 21 Jan 2019 14:55:07 +0000 Subject: [Elecraft] New K2 Build Message-ID: <8E9943EE-FAE3-495B-AF12-7D2DD9EDD9B8@law.du.edu> Hello Bruce -- I have built three K2s, with almost every accessory and option there is other than the transverters. I agree with all who have advised that the K2 be finished first and, except for the indicated KSB2 bits, then do the add-ons later. My reason for doing it that way was to be able to troubleshoot problems if any emerge. Having the options in would have complicated that for me. So I built the K2, tested and aligned, and then added each option, testing as I went along. The rework isn't difficult. And if you enjoy building a kit like this - which you will - doing that is just more of the fun. If you don't already have one, buy a solder sucker. The hand-held spring-loaded vacuum types are inexpensive and help greatly to clean out through-holes when something is removed. Hakko sells one for about 18 USD. Ted, KN1CBR ------------------------------ Message: 7 Date: Sun, 20 Jan 2019 18:32:07 +0000 From: Bruce McCartney To: elecraft at mailman.qth.net Subject: [Elecraft] New K2 build Message-ID: Content-Type: text/plain; charset=utf-8 I have taken advantage of Elecraft?s National Hobby Month offer and now have a K2 plus KSB2 SSB Option, KNB2 Noise Blanker, KAT2 20W Internal ATU to build. My query is: do I build first the K2 transceiver as CW only, then add in the options as completed? From reading the manuals, components have to be removed from the completed K2 before the addition of some options. It seems a shame to undo work. Old blogs mention a Rework Eliminator kit which would have been a solution to my dilemma, but these are long since discontinued. So, do I build first and add options later? I'd be pleased to hear from other K2 builders. I must add a huge kudos to both Elecraft and UPS - California to Scotland - 46 hours from ordering to delivery! What service! Thank you. Bruce GM4BDJ ------------------------------ From a.durbin at msn.com Mon Jan 21 10:15:41 2019 From: a.durbin at msn.com (Andy Durbin) Date: Mon, 21 Jan 2019 15:15:41 +0000 Subject: [Elecraft] KPA1500 loose 3K Ohm/3 watt resistor In-Reply-To: References: Message-ID: "The leads of the resistor look like they are bent at the end as if it was soldered to surface of the board" I suspect you are right. I looked at the (perhaps intentionally) out of focus FCC photos and I see a wire ended resistor bridging surface mount pads in the lower left of the "Bottom View" image. It does't look like your wandering part but it does seem to show that construction technique was used. Andy, k3wyc From ghyoungman at gmail.com Mon Jan 21 10:40:17 2019 From: ghyoungman at gmail.com (Grant Youngman) Date: Mon, 21 Jan 2019 10:40:17 -0500 Subject: [Elecraft] K3 SWR Anomaly In-Reply-To: <5c45ca5e.1c69fb81.27993.f650@mx.google.com> References: <5c44ad21.1c69fb81.1d89d.469e@mx.google.com> <5c45ca5e.1c69fb81.27993.f650@mx.google.com> Message-ID: <63AD854A-F640-4C58-A059-889C879C0AD7@gmail.com> The revised KAT3A has a hard bypass with relays. The KAT3 does a ?soft? bypass by placing the tuning network in some kind of neutral position. I don?t know what the KAT3 actually does to achieve this, but is it possible this is somehow related to the anomaly you are seeing? With the KAT3 in ?neutral? (whatever that actually means), since the SWR bridge sits between the KPA3 output and the KAT3 input, maybe that?s something to look at ? or at least get more info from Elecraft about how it works and if that might be related. Grant NQ5T K3 #2091 KX3 #8342 > On Jan 21, 2019, at 8:34 AM, Ed G wrote: > > Hi Barry, > I think what I am seeing is related to your experience. I ran through some additional testing. I see perhaps some slight differences between ANT1 and ANT2 positions as far as SWR readings, but nothing significant, at least on 40 meters. > I do now see something I?m even more puzzled over. While collecting SWR readings into a dummy load on 10 meters, I initially did see a high (2.0:1) reading on the K3 meter. I switched in the K3 tuner, and brought the SWR down to 1:1. But when I then bypassed the tuner, the low 1:1 SWR remained. This was true for either ANT1 or ANT2. I really don?t understand that. > So back to 40 meters, where I first noticed the high SWR anomaly. I thought I would try the tuner again, and then bypass it, to see if SWR would stay low on the K3 meter as it did on 10 meters. It did not. So I still have the anomaly on 40 meters, and it is the same on either ANT1 or ANT2 positions. > To summarize: > 1. SWR using a dummy load on 40 meters remains constant using an external LP-100A meter, but varies greatly using the K3 meter. As you tune up in frequency on the 40 meter band, the SWR on the K3 meter rises to almost 3:1, and the K3 output power drops back significantly. > 2. Antenna tuner settings appear to ?stick? on 10 meters, even when the tuner is bypassed. > > I believe some users, assuming there are others that have K3s which would exhibit this behavior, may not have noticed this anomaly. I do believe it may be responsible for what some users have noticed when using their K3 with an amp such as the KPA1500. That is, power overshoot. I suspect the K3, at least for me on 40 meters, is folding back power in response to a false SWR reading, and this can be seen in how the KPA1500 amp correspondingly drops back in power as the user transmits. That is perhaps why (again, for my situation) I see the power overshoot only on 40 meters when using my KPA1500. > --Ed? > From c-hawley at illinois.edu Mon Jan 21 11:02:57 2019 From: c-hawley at illinois.edu (hawley, charles j jr) Date: Mon, 21 Jan 2019 16:02:57 +0000 Subject: [Elecraft] New K2 Build In-Reply-To: <8E9943EE-FAE3-495B-AF12-7D2DD9EDD9B8@law.du.edu> References: <8E9943EE-FAE3-495B-AF12-7D2DD9EDD9B8@law.du.edu> Message-ID: <7CC02B49-E90F-40B8-9455-2C019A8A6DEC@illinois.edu> I did one K2... started in ?99 and finished in 2010. There was an addition to the house and a move of the shack in between. I had to write my own assembly manual to include all the mods, changes, and accessories. Worked when I turned it on. No reworks. I like the sound better than the K3. Chuck KE9UW Sent from my iPhone, cjack > On Jan 21, 2019, at 8:55 AM, Dauer, Edward wrote: > > Hello Bruce -- > > I have built three K2s, with almost every accessory and option there is other than the transverters. I agree with all who have advised that the K2 be finished first and, except for the indicated KSB2 bits, then do the add-ons later. My reason for doing it that way was to be able to troubleshoot problems if any emerge. Having the options in would have complicated that for me. So I built the K2, tested and aligned, and then added each option, testing as I went along. > > The rework isn't difficult. And if you enjoy building a kit like this - which you will - doing that is just more of the fun. If you don't already have one, buy a solder sucker. The hand-held spring-loaded vacuum types are inexpensive and help greatly to clean out through-holes when something is removed. Hakko sells one for about 18 USD. > > Ted, KN1CBR > > > ------------------------------ > > Message: 7 > Date: Sun, 20 Jan 2019 18:32:07 +0000 > From: Bruce McCartney > To: elecraft at mailman.qth.net > Subject: [Elecraft] New K2 build > Message-ID: > Content-Type: text/plain; charset=utf-8 > > I have taken advantage of Elecraft?s National Hobby Month offer and now have a K2 plus KSB2 SSB Option, KNB2 Noise Blanker, KAT2 20W Internal ATU to build. > > My query is: do I build first the K2 transceiver as CW only, then add in the options as completed? > > From reading the manuals, components have to be removed from the completed K2 before the addition of some options. It seems a shame to undo work. > > Old blogs mention a Rework Eliminator kit which would have been a solution to my dilemma, but these are long since discontinued. > > So, do I build first and add options later? I'd be pleased to hear from other K2 builders. > > I must add a huge kudos to both Elecraft and UPS - California to Scotland - 46 hours from ordering to delivery! What service! > > Thank you. > > Bruce > > GM4BDJ > > ------------------------------ > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to c-hawley at illinois.edu From mike.harris at horizon.co.fk Mon Jan 21 12:34:00 2019 From: mike.harris at horizon.co.fk (Mike Harris) Date: Mon, 21 Jan 2019 14:34:00 -0300 Subject: [Elecraft] K3 SWR Anomaly In-Reply-To: <63AD854A-F640-4C58-A059-889C879C0AD7@gmail.com> References: <5c44ad21.1c69fb81.1d89d.469e@mx.google.com> <5c45ca5e.1c69fb81.27993.f650@mx.google.com> <63AD854A-F640-4C58-A059-889C879C0AD7@gmail.com> Message-ID: Looking at the KAT3 schematic indicates that in bypass all the relays are set such that all the series inductors are individually short circuited and all the capacitors are open circuit. This potentially introduces strays due to the short circuit inductors, relays and pcb tracks still in the RF path. I believe it is mentioned on the Elecraft web site that this is the reason for the KAT3A having a "true bypass" or words to that effect. It was suggested that you could tune out the strays by tuning the ATU into a dummy load rather than simply putting it in bypass. I've just checked my KAT3 action by tuning each band via the Ant1 port into an Oak Hills Research 100W dummy load and comparing the result with simply bypassing it. All the way from 160m to 10m both states "Auto" and "Bypass" read 1.0-1 On 6m both read 1.1-1. I normally have the KAT3 in "bypass" given that much of the time my K3 is looking at the input circuit of an Acom 1000 or the antennas are already an acceptable match. There were clearly some long forgotten tuning solutions still sitting in the atu memory which were tuned out whilst feeding the dummy load. Regards, Mike VP8NO On 21/01/2019 12:40, Grant Youngman wrote: > The revised KAT3A has a hard bypass with relays. The KAT3 does a ?soft? bypass by placing the tuning network in some kind of neutral position. > > I don?t know what the KAT3 actually does to achieve this, but is it possible this is somehow related to the anomaly you are seeing? With the KAT3 in ?neutral? (whatever that actually means), since the SWR bridge sits between the KPA3 output and the KAT3 input, maybe that?s something to look at ? or at least get more info from Elecraft about how it works and if that might be related. > > Grant NQ5T > K3 #2091 KX3 #8342 > >> On Jan 21, 2019, at 8:34 AM, Ed G wrote: >> >> Hi Barry, >> I think what I am seeing is related to your experience. I ran through some additional testing. I see perhaps some slight differences between ANT1 and ANT2 positions as far as SWR readings, but nothing significant, at least on 40 meters. >> I do now see something I?m even more puzzled over. While collecting SWR readings into a dummy load on 10 meters, I initially did see a high (2.0:1) reading on the K3 meter. I switched in the K3 tuner, and brought the SWR down to 1:1. But when I then bypassed the tuner, the low 1:1 SWR remained. This was true for either ANT1 or ANT2. I really don?t understand that. >> So back to 40 meters, where I first noticed the high SWR anomaly. I thought I would try the tuner again, and then bypass it, to see if SWR would stay low on the K3 meter as it did on 10 meters. It did not. So I still have the anomaly on 40 meters, and it is the same on either ANT1 or ANT2 positions. >> To summarize: >> 1. SWR using a dummy load on 40 meters remains constant using an external LP-100A meter, but varies greatly using the K3 meter. As you tune up in frequency on the 40 meter band, the SWR on the K3 meter rises to almost 3:1, and the K3 output power drops back significantly. >> 2. Antenna tuner settings appear to ?stick? on 10 meters, even when the tuner is bypassed. >> >> I believe some users, assuming there are others that have K3s which would exhibit this behavior, may not have noticed this anomaly. I do believe it may be responsible for what some users have noticed when using their K3 with an amp such as the KPA1500. That is, power overshoot. I suspect the K3, at least for me on 40 meters, is folding back power in response to a false SWR reading, and this can be seen in how the KPA1500 amp correspondingly drops back in power as the user transmits. That is perhaps why (again, for my situation) I see the power overshoot only on 40 meters when using my KPA1500. >> --Ed? From edauer at law.du.edu Mon Jan 21 13:37:21 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Mon, 21 Jan 2019 18:37:21 +0000 Subject: [Elecraft] New K2 Build In-Reply-To: <7CC02B49-E90F-40B8-9455-2C019A8A6DEC@illinois.edu> References: <8E9943EE-FAE3-495B-AF12-7D2DD9EDD9B8@law.du.edu> <7CC02B49-E90F-40B8-9455-2C019A8A6DEC@illinois.edu> Message-ID: <3B4BB4A9-AED6-4F9E-AE67-75CF90488615@law.du.edu> I wonder if 11 years is a record? Ted, KN1CBR ?On 1/21/19, 9:03 AM, "hawley, charles j jr" wrote: I did one K2... started in ?99 and finished in 2010. There was an addition to the house and a move of the shack in between. I had to write my own assembly manual to include all the mods, changes, and accessories. Worked when I turned it on. No reworks. I like the sound better than the K3. Chuck KE9UW Sent from my iPhone, cjack > On Jan 21, 2019, at 8:55 AM, Dauer, Edward wrote: > > Hello Bruce -- > > I have built three K2s, with almost every accessory and option there is other than the transverters. I agree with all who have advised that the K2 be finished first and, except for the indicated KSB2 bits, then do the add-ons later. My reason for doing it that way was to be able to troubleshoot problems if any emerge. Having the options in would have complicated that for me. So I built the K2, tested and aligned, and then added each option, testing as I went along. > > The rework isn't difficult. And if you enjoy building a kit like this - which you will - doing that is just more of the fun. If you don't already have one, buy a solder sucker. The hand-held spring-loaded vacuum types are inexpensive and help greatly to clean out through-holes when something is removed. Hakko sells one for about 18 USD. > > Ted, KN1CBR > > > ------------------------------ > > Message: 7 > Date: Sun, 20 Jan 2019 18:32:07 +0000 > From: Bruce McCartney > To: elecraft at mailman.qth.net > Subject: [Elecraft] New K2 build > Message-ID: > Content-Type: text/plain; charset=utf-8 > > I have taken advantage of Elecraft?s National Hobby Month offer and now have a K2 plus KSB2 SSB Option, KNB2 Noise Blanker, KAT2 20W Internal ATU to build. > > My query is: do I build first the K2 transceiver as CW only, then add in the options as completed? > > From reading the manuals, components have to be removed from the completed K2 before the addition of some options. It seems a shame to undo work. > > Old blogs mention a Rework Eliminator kit which would have been a solution to my dilemma, but these are long since discontinued. > > So, do I build first and add options later? I'd be pleased to hear from other K2 builders. > > I must add a huge kudos to both Elecraft and UPS - California to Scotland - 46 hours from ordering to delivery! What service! > > Thank you. > > Bruce > > GM4BDJ > > ------------------------------ > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to c-hawley at illinois.edu From keith at elecraft.com Mon Jan 21 14:06:05 2019 From: keith at elecraft.com (Keith Trinity WE6R) Date: Mon, 21 Jan 2019 11:06:05 -0800 Subject: [Elecraft] SWR on 40M band In-Reply-To: <1547516738237-0.post@n2.nabble.com> References: <1547516738237-0.post@n2.nabble.com> Message-ID: <34b9c822-c08b-c0a7-00cc-afe0ded22d1c@elecraft.com> Check the 8.215 trap on the KAT3 ATU. It is C10 and L10 on the older units. They can burn as they are on the ant side of the ATU. We eliminated that trap on the newer KAT3A (not needed). In repairs we pull the coil and put a wire jumper in its place. Keith WE6R From keith at elecraft.com Mon Jan 21 14:16:02 2019 From: keith at elecraft.com (Keith Trinity WE6R) Date: Mon, 21 Jan 2019 11:16:02 -0800 Subject: [Elecraft] MCU Load Issues In-Reply-To: References: Message-ID: You may also have to throw the switch on the KIO3B Main board if you only have the USB cable. Very old boards did not have this switch, in that case you will need the RS232 interface to the RJ-45 jack and set RS232 to 38400. See https://ftp.elecraft.com/K3S/Manuals%20Downloads/E740280%20KIO3B%20Installation%20Rev%20A3.pdf Keith WE6R From ed.n3cw at gmail.com Mon Jan 21 14:23:52 2019 From: ed.n3cw at gmail.com (Ed G) Date: Mon, 21 Jan 2019 14:23:52 -0500 Subject: [Elecraft] K3 SWR Anomaly In-Reply-To: References: Message-ID: <5c461c48.1c69fb81.33c3.138b@mx.google.com> Hi Mike, Have not heard from Support yet. But this is an interesting discussion and I am learning some things from the group. I had not kept up with the differences between the KAT3 and the KAT3A, but it would seem that?s at the center of the issue I have. My K3 is S/N 02977, and I have the KAT3 tuner. Apparently the KAT3 is not really bypassed in the BYPASS position. From reading earlier posts, the KAT3 supposedly sets itself for what it thinks is a 50 ohm match when in the BYPASS position. It was suggested by Joe, W4TV, that the user could enable the tuner, tune into a dummy load and then bypass the tuner, and that process would reset the bypass settings. That seems to have worked for me on 10 meters, but not on 40 meters. So part of my original post has been answered, but here?s what remains: 1. With my particular KAT3, I am not sure why the recal of bypass settings per W4TV does not work on 40 meters. 2. If the KAT3 is not truly being bypassed, can there be some unexpected results when using the K3 with the KPA1500, such as power overshoot? 3. Am I ok to enable the KAT3 in my K3 and also use the tuner in the KPA1500? Otherwise I am having to readjust the K3 power out setting as I change frequency on 40 meters, to keep from overdriving the KPA1500. It would appear that I might have some unknown tuner circuit issue when bypassing the tuner on 40 meters due to whatever is still in the RF path, or perhaps even the faulty trap component Mike mentioned. Elecraft ? do I need to replace the KAT3 with the KAT3A to get rid of this problem, and eliminate the need to readjust power up when using my KPA1500? I appreciate all the responses so far! --Ed? Sent from Mail for Windows 10 From: Mike Wetzel Sent: Monday, January 21, 2019 1:33 PM To: ed.n3cw at gmail.com Subject: K3 SWR Ed, I?m sure you have heard from Elecraft Support on this but just in case.? I had a very similar problem on 40 meter a couple of years ago.? It turned out to be a faulty trap component on a nearly vacant board near the ant terminals.?? The trap is not needed I removed a cap and all has been fine ever since. Mike W9RE ???? I think what I am seeing is related to your experience. I ran through some additional testing. I see perhaps some slight differences between ANT1 and ANT2 positions as far as SWR readings, but nothing significant, at least on 40 meters. ??? ?I do now see something I?m even more puzzled over. While collecting SWR readings into a dummy load on 10 meters, I initially did see a high (2.0:1) reading on the K3 meter. I switched in the K3 tuner, and brought the SWR down to 1:1.? But when I then bypassed the tuner, the low 1:1 SWR remained.? This was true for either ANT1 or ANT2.? I really don?t understand that. ???? So back to 40 meters, where I first noticed the high SWR anomaly. I thought I would try the tuner again, and then bypass it, to see if SWR would stay low on the K3 meter as it did on 10 meters.? It did not.? So I still have the anomaly on 40 meters, and it is the same on either ANT1 or ANT2 positions.? ???? To summarize: 1.? SWR using a dummy load on 40 meters remains constant using an external LP-100A meter, but varies greatly using the K3 meter. As you tune up in frequency on the 40 meter band, the SWR on the K3 meter rises to almost 3:1, and the K3 output power drops back significantly. 2. Antenna tuner settings appear to ?stick? on 10 meters, even when the tuner is bypassed. I believe some users, assuming there are others that have K3s which would exhibit this behavior, may not have noticed this anomaly. I do believe it may be responsible for what some users have noticed when using their K3 with an amp such as the KPA1500. That is, power overshoot. I suspect the K3, at least for me on 40 meters, is folding back power in response to a false SWR reading, and this can be seen in how the KPA1500 amp correspondingly drops back in power as the user transmits.? That is perhaps why (again, for my situation) I see the power overshoot only on 40 meters when using my KPA1500. --Ed? --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus From gt-i at gmx.net Mon Jan 21 14:44:05 2019 From: gt-i at gmx.net (gt-i at gmx.net) Date: Mon, 21 Jan 2019 20:44:05 +0100 Subject: [Elecraft] New K2 build In-Reply-To: References: Message-ID: <392ede82-a9aa-2a7d-4714-5717817366a9@gmx.net> Bruce, I built mine in 2001, and as far as I remember I had the same situation with the options. Since you have the options, sneak-preview into them and read what and how the parts have to be removed. Then you get an idea how to install them in a way you can removed them without putting harm to the main pcb. One obvious measure is to not push down the resistors or jumpers to the pcb, rather leave some space. Happy building! Gernot DF5RF K2 #2328 (+KAT,KBAT, KSB,KNB,KDSP,KXV60,K160RX,my own buffered IF-out with a Softrock RX Lite attached, my own Keyout) Am 20.01.2019 um 19:32 schrieb Bruce McCartney via Elecraft: > I have taken advantage of Elecraft?s National Hobby Month offer and now have a K2 plus KSB2 SSB Option, KNB2 Noise Blanker, KAT2 20W Internal ATU to build. > > My query is: do I build first the K2 transceiver as CW only, then add in the options as completed? > > From reading the manuals, components have to be removed from the completed K2 before the addition of some options. It seems a shame to undo work. > > Old blogs mention a Rework Eliminator kit which would have been a solution to my dilemma, but these are long since discontinued. > > So, do I build first and add options later? I'd be pleased to hear from other K2 builders. > > I must add a huge kudos to both Elecraft and UPS - California to Scotland - 46 hours from ordering to delivery! What service! > > Thank you. > > Bruce > > GM4BDJ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to gt-i at gmx.net From k2zf50 at aol.com Mon Jan 21 14:51:40 2019 From: k2zf50 at aol.com (k2zf50 at aol.com) Date: Mon, 21 Jan 2019 19:51:40 +0000 (UTC) Subject: [Elecraft] K3 swr anomoly References: <488872792.1172123.1548100300656.ref@mail.yahoo.com> Message-ID: <488872792.1172123.1548100300656@mail.yahoo.com> Please excuse me if this information has been given already. I spoke to Wayne N6KR? at Dayton a few years ago about the KAT3. To clear all memories in the KAT3: While in Config:KAT3, tap the "CLR" button on the K3 panel. (This is per band) Tune KAT3 into a dummy load - each band to re-establish memory. 73, Jim Douglas? ?K2ZF From k9yeq at live.com Mon Jan 21 18:24:00 2019 From: k9yeq at live.com (Bill Johnson) Date: Mon, 21 Jan 2019 23:24:00 +0000 Subject: [Elecraft] New K2 Build In-Reply-To: <3B4BB4A9-AED6-4F9E-AE67-75CF90488615@law.du.edu> References: <8E9943EE-FAE3-495B-AF12-7D2DD9EDD9B8@law.du.edu> <7CC02B49-E90F-40B8-9455-2C019A8A6DEC@illinois.edu> <3B4BB4A9-AED6-4F9E-AE67-75CF90488615@law.du.edu> Message-ID: I think so. Wayne thought I may have a record for the shortest build @ 26 hours. But I think Don would easily beat that with all his experience and skills. We have both concurred, however, that with the time that has passed neither of us have the speed of the 1990's. Such is aging. 73, Bill K9YEQ https://wrj-tech.com/ -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Dauer, Edward Sent: Monday, January 21, 2019 12:37 PM To: hawley, charles j jr Cc: elecraft at mailman.qth.net Subject: Re: [Elecraft] New K2 Build I wonder if 11 years is a record? Ted, KN1CBR ?On 1/21/19, 9:03 AM, "hawley, charles j jr" wrote: I did one K2... started in ?99 and finished in 2010. There was an addition to the house and a move of the shack in between. I had to write my own assembly manual to include all the mods, changes, and accessories. Worked when I turned it on. No reworks. I like the sound better than the K3. Chuck KE9UW Sent from my iPhone, cjack > On Jan 21, 2019, at 8:55 AM, Dauer, Edward wrote: > > Hello Bruce -- > > I have built three K2s, with almost every accessory and option there is other than the transverters. I agree with all who have advised that the K2 be finished first and, except for the indicated KSB2 bits, then do the add-ons later. My reason for doing it that way was to be able to troubleshoot problems if any emerge. Having the options in would have complicated that for me. So I built the K2, tested and aligned, and then added each option, testing as I went along. > > The rework isn't difficult. And if you enjoy building a kit like this - which you will - doing that is just more of the fun. If you don't already have one, buy a solder sucker. The hand-held spring-loaded vacuum types are inexpensive and help greatly to clean out through-holes when something is removed. Hakko sells one for about 18 USD. > > Ted, KN1CBR > > > ------------------------------ > > Message: 7 > Date: Sun, 20 Jan 2019 18:32:07 +0000 > From: Bruce McCartney > To: elecraft at mailman.qth.net > Subject: [Elecraft] New K2 build > Message-ID: > Content-Type: text/plain; charset=utf-8 > > I have taken advantage of Elecraft?s National Hobby Month offer and now have a K2 plus KSB2 SSB Option, KNB2 Noise Blanker, KAT2 20W Internal ATU to build. > > My query is: do I build first the K2 transceiver as CW only, then add in the options as completed? > > From reading the manuals, components have to be removed from the completed K2 before the addition of some options. It seems a shame to undo work. > > Old blogs mention a Rework Eliminator kit which would have been a solution to my dilemma, but these are long since discontinued. > > So, do I build first and add options later? I'd be pleased to hear from other K2 builders. > > I must add a huge kudos to both Elecraft and UPS - California to Scotland - 46 hours from ordering to delivery! What service! > > Thank you. > > Bruce > > GM4BDJ > > ------------------------------ > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to c-hawley at illinois.edu ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com From donwilh at embarqmail.com Mon Jan 21 18:35:46 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Mon, 21 Jan 2019 18:35:46 -0500 Subject: [Elecraft] New K2 Build In-Reply-To: References: <8E9943EE-FAE3-495B-AF12-7D2DD9EDD9B8@law.du.edu> <7CC02B49-E90F-40B8-9455-2C019A8A6DEC@illinois.edu> <3B4BB4A9-AED6-4F9E-AE67-75CF90488615@law.du.edu> Message-ID: <2ac11eaa-1f76-abae-4180-bc73754ab031@embarqmail.com> Bill, My real advantage is that I no longer have to read in detail to follow the assembly steps, but if you are doing it for the first time, do read carefully and completely as you are working. My first one (Field Test) took me 34 hours. There is no shame in taking 60 hours or more to build a K2 - proceed at your own comfortable pace, it is not a race, and going faster often leads to extended troubleshooting or an expensive repair because of build errors. I can no longer work as fast because of hand tremors. It has gotten bad enough that I have decided not to take on any new build or repair jobs. I will be continuing to provide support on this reflector. Yes, it is a part of getting older! 73, Don W3FPR On 1/21/2019 6:24 PM, Bill Johnson wrote: > I think so. Wayne thought I may have a record for the shortest build @ 26 hours. But I think Don would easily beat that with all his experience and skills. We have both concurred, however, that with the time that has passed neither of us have the speed of the 1990's. Such is aging. > From n6kr at elecraft.com Tue Jan 22 00:09:44 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Mon, 21 Jan 2019 21:09:44 -0800 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching Message-ID: Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially those not experienced in pitch-matching. Here's a bit of history on where these features came from and how they work. CW Spotting History When a station finishes a CQ in CW mode, the operator faces the challenge of copying someone who's calling back. Callers may be weak or obscured by QRM; the op can usually deal with both problems by narrowing the filter passband. However, callers may also be off frequency. A calling station may be using a wide filter passband themselves, not attempting to carefully match their VFO frequency to that of the CQing station. The result may be no QSO, even when propagation is excellent. In the Days of Yore, a frequency offset between stations didn't always matter. Sometimes both stations used crystal-controlled transmitters, so operators had to patient tune around after calling CQ. As a 14-year-old novice I embraced this operating style for a year or so, armed with a dozen or so crusty FT-243 crystals for my Heath HW-16. I nearly wore out the socket swapping them in and out. After calling CQ, it was not unusual to find a caller 30 or more kHz away! (Away from "where" was a poorly answered question, as my Hallicrafters receiver dial wasn't exactly digital.) Fortunately I soon acquired an outboard VFO, a life-changing addition to my station. Jealous friends doubled up on their paper routes to pay for their own. Girls suddenly paid more attention to me. These days virtually everyone has a VFO, along with the expectation that they won't have to tune theirs very far, if at all, to tune you in. Not only that, they're stable and well calibrated, not like the beasts we had to skillfully tame. Progress! Manual Spotting (SPOT switch) Once I had a VFO I quickly learned to do *manual* pitch matching. Older rigs did't provide a way to do that explicitly, so you'd improvise. Basically, you had to coerce a very weak signal out of your own transmitter, say by turning on only the driver, then tune the transmit VFO until you could hear your signal on your own receiver -- superimposed on the calling station, at the same pitch. This is what we call spotting. Of course spotting is a lot more convenient these days, as many rigs include a SPOT switch. This function is easy for a modern transceiver designer to add, because the radio's firmware is quite capable of turning on only the CW sidetone without transmitting. That is the purpose of the SPOT switch on all Elecraft transceivers. Tap SPOT, and you'll hear your sidetone pitch. Most people can do a good job of adjusting the VFO such that the CQing station's pitch matches that of the SPOT tone. This ensures that when you call them, you'll be close to their own frequency. Tuning Aids: Filtering (APF), PLL (NE567), and Spectral (CWT) Since not everyone has an inherent musical ear, various hardware-enhanced means of tuning in CW signals have been developed. The simplest method is to just narrow your receiver passband so much that, if you can hear a station calling CQ at all, you're guaranteed to be "right on top of him." This assumes that your transceiver enforces alignment between its transmit and receive pitch...true of all Elecraft gear. Narrow filtering has gone through decades of evolution. Some filters were based on op-amps (active filters), while others were based on LC filtering, conscripting humongous toroidal cores scavenged from telco equipment. I acquired my stash of these from a haphazard mound of old switching racks, decaying in an abandoned aircraft hanger on the Bermuda U.S. Navy base. (That irresistible junk pile was also a mother load of TO5 transistors, multi-pound electrolytic capacitors, and tetanus, but that's another story.) Typically the toroids were 88 millihenries -- a huge value for a high-Q inductor, permitting resonance in the low audio range. Later, such filters migrated to digital signal processing, in the form of switched-capacitor ICs or DSPs. You can still buy these switched-capacitor chips, like the MF10, from various sources. It's instructive to roll your own tunable filter, just for fun. Whether passive or active, the goal of filtering is typically to achieve a narrow passband, say 250 Hz or less. With DSP, nearly perfect filters with "brick wall" passbands can be created. But these have the disadvantage of ringing like a bell when pinged by a CW signal or noise, making copy difficult. One solution incorporated into the K-line and KX-line is the Audio Peaking Filter (APF), which provides a 30-Hz bandwidth at -3 dB, but broad skirts, preventing ringing from occurring. As our customers will attest, APF works like magic on weak signals obscured by noise. Another forerunner to DSP techniques was the audio phase-locked-loop, using inexpensive ICs like the legendary LM567. When locked on a signal that matched its center frequency, the circuit would turn on an LED, alerting the operator that the VFO was now properly tuned. With the DSPs in our K-line and KX-line radios, we can provide a much more powerful tool: CWT, or "CW Tuning Aid." When enabled, CWT turns the upper portion of the rig's S-meter into something of a mini spectrum analyzer. The pitch of the strongest signal in the passband is analyzed by the DSP, then represented as a single segment of the bar graph. For CWT-enhanced manual spotting, the operator simply tunes the VFO slowly until the center CWT segment is flashing along with the keyed signal. Manual tuning with CWT can also be used in FSK-D and PSK-D modes as described in the owner's manual. Closing the Loop: Auto-Spotting (SPOT + CWT) The Elecraft K3/K3S/KX2/KX3 take CW tuning another step forward by providing a way to *automatically* retune the VFO frequency to match that of a received signal. How does this work? When CWT is turned on, firmware treats the SPOT switch as AUTO-SPOT. The DSP analyzes the incoming signal, and with a bit of processing, determines its exact audio pitch. From there all that's needed is a bit of math to offset the VFO to match this pitch to the CW sidetone. There's another subtlety, though. Since a CW signal is generally being keyed on and off, the CWT algorithm has to ensure that it doesn't "take off," chasing a signal that's not there. To avoid this, we keep track of the energy in the passband, and slew the VFO incrementally over an average of about 0.5 second, moving only when the target signal is present. How to Use Auto-Spot I encourage you to give the auto-spot feature a try. It's best to start with a fairly narrow passband, say 400-600 Hz; narrower if there's a lot of QRM. Find a signal, turn on CWT, then tap SPOT to tune it in. A second tap of SPOT may get even closer, especially if there's a lot of band noise. Auto-spot can also be used in Elecraft's PSK-D mode, i.e. for PSK31/PSK63. As with CW mode, just turn on CWT, tune in a prospective signal, and tap SPOT. Since PSK auto-decoding requires very accurate tuning, it's best to set the filter bandwidth to 50 Hz, then let auto-spot dial things in down to the last 2 or 3 Hz. If you have text decode turned on, you should start seeing text characters scroll by after auto-tuning has completed. Tapping a second time or fine-tuning the VFO a bit in 1 Hz steps may improve copy. 73, Wayne N6KR From a.durbin at msn.com Tue Jan 22 08:31:58 2019 From: a.durbin at msn.com (Andy Durbin) Date: Tue, 22 Jan 2019 13:31:58 +0000 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching Message-ID: A history of CW pitch matching would seem to be incomplete without a mention of the BFO (Beat Frequency Oscillator). When I started operating CW I had separate TX and RX. TX was homebrew and the RX was an AR-88D. A common technique for tuning a CW station was to set the BFO to zero offset, tune the station for zero beat, and then offset the BFO to give the desired pitch. In my case that pitch was the frequency that resonated the diaphragms of the headphones. Having independent RX and TX meant there was no risk of 2 stations chasing each other up or down the band. Thanks for the nostalgia trip. Andy, k3wyc From k3bh at arrl.net Tue Jan 22 08:57:12 2019 From: k3bh at arrl.net (Jay Rutherford) Date: Tue, 22 Jan 2019 08:57:12 -0500 Subject: [Elecraft] New K2 Build In-Reply-To: <2ac11eaa-1f76-abae-4180-bc73754ab031@embarqmail.com> References: <8E9943EE-FAE3-495B-AF12-7D2DD9EDD9B8@law.du.edu> <7CC02B49-E90F-40B8-9455-2C019A8A6DEC@illinois.edu> <3B4BB4A9-AED6-4F9E-AE67-75CF90488615@law.du.edu> <2ac11eaa-1f76-abae-4180-bc73754ab031@embarqmail.com> Message-ID: Oh, Nooooo! Say it isn't so, Don! Sorry to hear this news. It's been about a generation of your supporting hams with their legacy Elecraft radi!os through builds, upgrades, and repairs. I'm glad I got my K2 A-to-B upgrade from you before this decision. I wish you many more years of helpful activity on the reflector. 73 Jay K3BH On Mon, Jan 21, 2019, at 18:36, Don Wilhelm wrote: > I can no longer work as fast because of hand tremors. It has gotten bad > enough that I have decided not to take on any new build or repair jobs. From nr4c at widomaker.com Tue Jan 22 09:14:29 2019 From: nr4c at widomaker.com (Nr4c) Date: Tue, 22 Jan 2019 09:14:29 -0500 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: References: Message-ID: <99AB700D-B876-4319-96AA-33CF6FAC9527@widomaker.com> Wayne, thanks for this historical description. I have used these tools myself a lot over the years. They are one reason I have purchased my K3, K3S and KX3(however sold to purchase K3S). Now, one thing you missed... when you?re working a big pileup and you feel you just can?t get through, it may be that all your ?buddies? are doing the same thing, using Auto-Spot! Now turn on XIT and set it to 12-20 Hz either way. Now your signal will be just a little different from all the others and you have a better chance of being heard. Sent from my iPhone ...nr4c. bill > On Jan 22, 2019, at 12:09 AM, Wayne Burdick wrote: > > Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially those not experienced in pitch-matching. Here's a bit of history on where these features came from and how they work. > > > CW Spotting History > > When a station finishes a CQ in CW mode, the operator faces the challenge of copying someone who's calling back. Callers may be weak or obscured by QRM; the op can usually deal with both problems by narrowing the filter passband. However, callers may also be off frequency. A calling station may be using a wide filter passband themselves, not attempting to carefully match their VFO frequency to that of the CQing station. The result may be no QSO, even when propagation is excellent. > > In the Days of Yore, a frequency offset between stations didn't always matter. Sometimes both stations used crystal-controlled transmitters, so operators had to patient tune around after calling CQ. > > As a 14-year-old novice I embraced this operating style for a year or so, armed with a dozen or so crusty FT-243 crystals for my Heath HW-16. I nearly wore out the socket swapping them in and out. After calling CQ, it was not unusual to find a caller 30 or more kHz away! (Away from "where" was a poorly answered question, as my Hallicrafters receiver dial wasn't exactly digital.) > > Fortunately I soon acquired an outboard VFO, a life-changing addition to my station. Jealous friends doubled up on their paper routes to pay for their own. Girls suddenly paid more attention to me. > > These days virtually everyone has a VFO, along with the expectation that they won't have to tune theirs very far, if at all, to tune you in. Not only that, they're stable and well calibrated, not like the beasts we had to skillfully tame. Progress! > > > Manual Spotting (SPOT switch) > > Once I had a VFO I quickly learned to do *manual* pitch matching. Older rigs did't provide a way to do that explicitly, so you'd improvise. Basically, you had to coerce a very weak signal out of your own transmitter, say by turning on only the driver, then tune the transmit VFO until you could hear your signal on your own receiver -- superimposed on the calling station, at the same pitch. This is what we call spotting. > > Of course spotting is a lot more convenient these days, as many rigs include a SPOT switch. This function is easy for a modern transceiver designer to add, because the radio's firmware is quite capable of turning on only the CW sidetone without transmitting. > > That is the purpose of the SPOT switch on all Elecraft transceivers. Tap SPOT, and you'll hear your sidetone pitch. Most people can do a good job of adjusting the VFO such that the CQing station's pitch matches that of the SPOT tone. This ensures that when you call them, you'll be close to their own frequency. > > > Tuning Aids: Filtering (APF), PLL (NE567), and Spectral (CWT) > > Since not everyone has an inherent musical ear, various hardware-enhanced means of tuning in CW signals have been developed. > > The simplest method is to just narrow your receiver passband so much that, if you can hear a station calling CQ at all, you're guaranteed to be "right on top of him." This assumes that your transceiver enforces alignment between its transmit and receive pitch...true of all Elecraft gear. > > Narrow filtering has gone through decades of evolution. Some filters were based on op-amps (active filters), while others were based on LC filtering, conscripting humongous toroidal cores scavenged from telco equipment. I acquired my stash of these from a haphazard mound of old switching racks, decaying in an abandoned aircraft hanger on the Bermuda U.S. Navy base. (That irresistible junk pile was also a mother load of TO5 transistors, multi-pound electrolytic capacitors, and tetanus, but that's another story.) Typically the toroids were 88 millihenries -- a huge value for a high-Q inductor, permitting resonance in the low audio range. > > Later, such filters migrated to digital signal processing, in the form of switched-capacitor ICs or DSPs. You can still buy these switched-capacitor chips, like the MF10, from various sources. It's instructive to roll your own tunable filter, just for fun. > > Whether passive or active, the goal of filtering is typically to achieve a narrow passband, say 250 Hz or less. With DSP, nearly perfect filters with "brick wall" passbands can be created. But these have the disadvantage of ringing like a bell when pinged by a CW signal or noise, making copy difficult. > > One solution incorporated into the K-line and KX-line is the Audio Peaking Filter (APF), which provides a 30-Hz bandwidth at -3 dB, but broad skirts, preventing ringing from occurring. As our customers will attest, APF works like magic on weak signals obscured by noise. > > Another forerunner to DSP techniques was the audio phase-locked-loop, using inexpensive ICs like the legendary LM567. When locked on a signal that matched its center frequency, the circuit would turn on an LED, alerting the operator that the VFO was now properly tuned. > > With the DSPs in our K-line and KX-line radios, we can provide a much more powerful tool: CWT, or "CW Tuning Aid." When enabled, CWT turns the upper portion of the rig's S-meter into something of a mini spectrum analyzer. The pitch of the strongest signal in the passband is analyzed by the DSP, then represented as a single segment of the bar graph. For CWT-enhanced manual spotting, the operator simply tunes the VFO slowly until the center CWT segment is flashing along with the keyed signal. > > Manual tuning with CWT can also be used in FSK-D and PSK-D modes as described in the owner's manual. > > > Closing the Loop: Auto-Spotting (SPOT + CWT) > > The Elecraft K3/K3S/KX2/KX3 take CW tuning another step forward by providing a way to *automatically* retune the VFO frequency to match that of a received signal. How does this work? > > When CWT is turned on, firmware treats the SPOT switch as AUTO-SPOT. The DSP analyzes the incoming signal, and with a bit of processing, determines its exact audio pitch. From there all that's needed is a bit of math to offset the VFO to match this pitch to the CW sidetone. > > There's another subtlety, though. Since a CW signal is generally being keyed on and off, the CWT algorithm has to ensure that it doesn't "take off," chasing a signal that's not there. To avoid this, we keep track of the energy in the passband, and slew the VFO incrementally over an average of about 0.5 second, moving only when the target signal is present. > > > How to Use Auto-Spot > > I encourage you to give the auto-spot feature a try. It's best to start with a fairly narrow passband, say 400-600 Hz; narrower if there's a lot of QRM. Find a signal, turn on CWT, then tap SPOT to tune it in. A second tap of SPOT may get even closer, especially if there's a lot of band noise. > > Auto-spot can also be used in Elecraft's PSK-D mode, i.e. for PSK31/PSK63. As with CW mode, just turn on CWT, tune in a prospective signal, and tap SPOT. Since PSK auto-decoding requires very accurate tuning, it's best to set the filter bandwidth to 50 Hz, then let auto-spot dial things in down to the last 2 or 3 Hz. If you have text decode turned on, you should start seeing text characters scroll by after auto-tuning has completed. Tapping a second time or fine-tuning the VFO a bit in 1 Hz steps may improve copy. > > 73, > Wayne > N6KR > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From mike.harris at horizon.co.fk Tue Jan 22 11:28:28 2019 From: mike.harris at horizon.co.fk (Mike Harris) Date: Tue, 22 Jan 2019 13:28:28 -0300 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: <99AB700D-B876-4319-96AA-33CF6FAC9527@widomaker.com> References: <99AB700D-B876-4319-96AA-33CF6FAC9527@widomaker.com> Message-ID: <99139b11-a047-0f9d-6981-4a1da33352c6@horizon.co.fk> Yet another trick learnt by hard experience given away for free :-( Regards, Mike VP8NO On 22/01/2019 11:14, Nr4c wrote: > Now, one thing you missed... when you?re working a big pileup and you feel you just can?t get through, it may be that all your ?buddies? are doing the same thing, using Auto-Spot! > > Now turn on XIT and set it to 12-20 Hz either way. Now your signal will be just a little different from all the others and you have a better chance of being heard. > > Sent from my iPhone > ...nr4c. bill From xdavid at cis-broadband.com Tue Jan 22 11:59:04 2019 From: xdavid at cis-broadband.com (David Gilbert) Date: Tue, 22 Jan 2019 09:59:04 -0700 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: References: Message-ID: Wayne, you forgot clicking on the DX Cluster spot.? ;) I'm being facetious, of course, but the practice of simply clicking on a cluster spot does point out a problem with zero beating by any means ... if every calling station is zero beat the station calling CQ isn't going to copy anyone. Zero beat isn't always a good thing. 73, Dave? AB7E On 1/21/2019 10:09 PM, Wayne Burdick wrote: > Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially those not experienced in pitch-matching. Here's a bit of history on where these features came from and how they work. > > > CW Spotting History > > When a station finishes a CQ in CW mode, the operator faces the challenge of copying someone who's calling back. Callers may be weak or obscured by QRM; the op can usually deal with both problems by narrowing the filter passband. However, callers may also be off frequency. A calling station may be using a wide filter passband themselves, not attempting to carefully match their VFO frequency to that of the CQing station. The result may be no QSO, even when propagation is excellent. > > In the Days of Yore, a frequency offset between stations didn't always matter. Sometimes both stations used crystal-controlled transmitters, so operators had to patient tune around after calling CQ. > > As a 14-year-old novice I embraced this operating style for a year or so, armed with a dozen or so crusty FT-243 crystals for my Heath HW-16. I nearly wore out the socket swapping them in and out. After calling CQ, it was not unusual to find a caller 30 or more kHz away! (Away from "where" was a poorly answered question, as my Hallicrafters receiver dial wasn't exactly digital.) > > Fortunately I soon acquired an outboard VFO, a life-changing addition to my station. Jealous friends doubled up on their paper routes to pay for their own. Girls suddenly paid more attention to me. > > These days virtually everyone has a VFO, along with the expectation that they won't have to tune theirs very far, if at all, to tune you in. Not only that, they're stable and well calibrated, not like the beasts we had to skillfully tame. Progress! > > > Manual Spotting (SPOT switch) > > Once I had a VFO I quickly learned to do *manual* pitch matching. Older rigs did't provide a way to do that explicitly, so you'd improvise. Basically, you had to coerce a very weak signal out of your own transmitter, say by turning on only the driver, then tune the transmit VFO until you could hear your signal on your own receiver -- superimposed on the calling station, at the same pitch. This is what we call spotting. > > Of course spotting is a lot more convenient these days, as many rigs include a SPOT switch. This function is easy for a modern transceiver designer to add, because the radio's firmware is quite capable of turning on only the CW sidetone without transmitting. > > That is the purpose of the SPOT switch on all Elecraft transceivers. Tap SPOT, and you'll hear your sidetone pitch. Most people can do a good job of adjusting the VFO such that the CQing station's pitch matches that of the SPOT tone. This ensures that when you call them, you'll be close to their own frequency. > > > Tuning Aids: Filtering (APF), PLL (NE567), and Spectral (CWT) > > Since not everyone has an inherent musical ear, various hardware-enhanced means of tuning in CW signals have been developed. > > The simplest method is to just narrow your receiver passband so much that, if you can hear a station calling CQ at all, you're guaranteed to be "right on top of him." This assumes that your transceiver enforces alignment between its transmit and receive pitch...true of all Elecraft gear. > > Narrow filtering has gone through decades of evolution. Some filters were based on op-amps (active filters), while others were based on LC filtering, conscripting humongous toroidal cores scavenged from telco equipment. I acquired my stash of these from a haphazard mound of old switching racks, decaying in an abandoned aircraft hanger on the Bermuda U.S. Navy base. (That irresistible junk pile was also a mother load of TO5 transistors, multi-pound electrolytic capacitors, and tetanus, but that's another story.) Typically the toroids were 88 millihenries -- a huge value for a high-Q inductor, permitting resonance in the low audio range. > > Later, such filters migrated to digital signal processing, in the form of switched-capacitor ICs or DSPs. You can still buy these switched-capacitor chips, like the MF10, from various sources. It's instructive to roll your own tunable filter, just for fun. > > Whether passive or active, the goal of filtering is typically to achieve a narrow passband, say 250 Hz or less. With DSP, nearly perfect filters with "brick wall" passbands can be created. But these have the disadvantage of ringing like a bell when pinged by a CW signal or noise, making copy difficult. > > One solution incorporated into the K-line and KX-line is the Audio Peaking Filter (APF), which provides a 30-Hz bandwidth at -3 dB, but broad skirts, preventing ringing from occurring. As our customers will attest, APF works like magic on weak signals obscured by noise. > > Another forerunner to DSP techniques was the audio phase-locked-loop, using inexpensive ICs like the legendary LM567. When locked on a signal that matched its center frequency, the circuit would turn on an LED, alerting the operator that the VFO was now properly tuned. > > With the DSPs in our K-line and KX-line radios, we can provide a much more powerful tool: CWT, or "CW Tuning Aid." When enabled, CWT turns the upper portion of the rig's S-meter into something of a mini spectrum analyzer. The pitch of the strongest signal in the passband is analyzed by the DSP, then represented as a single segment of the bar graph. For CWT-enhanced manual spotting, the operator simply tunes the VFO slowly until the center CWT segment is flashing along with the keyed signal. > > Manual tuning with CWT can also be used in FSK-D and PSK-D modes as described in the owner's manual. > > > Closing the Loop: Auto-Spotting (SPOT + CWT) > > The Elecraft K3/K3S/KX2/KX3 take CW tuning another step forward by providing a way to *automatically* retune the VFO frequency to match that of a received signal. How does this work? > > When CWT is turned on, firmware treats the SPOT switch as AUTO-SPOT. The DSP analyzes the incoming signal, and with a bit of processing, determines its exact audio pitch. From there all that's needed is a bit of math to offset the VFO to match this pitch to the CW sidetone. > > There's another subtlety, though. Since a CW signal is generally being keyed on and off, the CWT algorithm has to ensure that it doesn't "take off," chasing a signal that's not there. To avoid this, we keep track of the energy in the passband, and slew the VFO incrementally over an average of about 0.5 second, moving only when the target signal is present. > > > How to Use Auto-Spot > > I encourage you to give the auto-spot feature a try. It's best to start with a fairly narrow passband, say 400-600 Hz; narrower if there's a lot of QRM. Find a signal, turn on CWT, then tap SPOT to tune it in. A second tap of SPOT may get even closer, especially if there's a lot of band noise. > > Auto-spot can also be used in Elecraft's PSK-D mode, i.e. for PSK31/PSK63. As with CW mode, just turn on CWT, tune in a prospective signal, and tap SPOT. Since PSK auto-decoding requires very accurate tuning, it's best to set the filter bandwidth to 50 Hz, then let auto-spot dial things in down to the last 2 or 3 Hz. If you have text decode turned on, you should start seeing text characters scroll by after auto-tuning has completed. Tapping a second time or fine-tuning the VFO a bit in 1 Hz steps may improve copy. > > 73, > Wayne > N6KR > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to xdavid at cis-broadband.com > From k9ma at sdellington.us Tue Jan 22 12:11:30 2019 From: k9ma at sdellington.us (K9MA) Date: Tue, 22 Jan 2019 11:11:30 -0600 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: References: Message-ID: Back in my college days at W9YT, we had a Drake line, separate transmitter and receivers. When searching and pouncing in a contest, you had to spot the transmitter before every contact. Spotting required turning one of the rotary switches on the transmitter, a cumbersome process. Imagine doing that a couple thousand times in a weekend. At some point, we came up with the idea to hook a foot switch up to do the spotting, which made it much easier, and save a lot of wear and tear on the rotary switch, not to mention the operator's wrist. In those days, 40-50 years ago, transceivers just didn't work well on CW, so almost all CW operators used separate transmitters and receivers. Some, like the Drake line, could transceive, but had the same problem on CW. Transceivers didn't account for the BFO offset, and there was no RIT or XIT. If you called another station in transceive mode, you would be 700 Hz or so off frequency. Two transceivers pretty much couldn't work each other at all. Sometime while I was inactive in the late 70's and 80's, that problem was solved, and we no longer had to spot before every contact. I think that solution had to wait for frequency synthesis, as it otherwise would have required additional (expensive) crystals. Does anyone know of a non-synthesized transceiver that didn't have the CW offset problem? 73, Scott K9MA On 1/21/2019 23:09, Wayne Burdick wrote: > Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially those not experienced in pitch-matching. Here's a bit of history on where these features came from and how they work. -- Scott K9MA k9ma at sdellington.us From k9ma at sdellington.us Tue Jan 22 12:14:27 2019 From: k9ma at sdellington.us (K9MA) Date: Tue, 22 Jan 2019 11:14:27 -0600 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: References: Message-ID: <5df178e8-5d66-fb3f-b731-d6a03656845f@sdellington.us> On 1/22/2019 10:59, David Gilbert wrote: > > Wayne, you forgot clicking on the DX Cluster spot. ;) Everyone zero beat was, I think, a bigger problem before skimmers. Skimmer spots often seem to be quite a ways off frequency, probably because their SDR receivers aren't all that stable. Some may be in unheated buildings, too. 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us From n8lp at telepostinc.com Tue Jan 22 13:13:25 2019 From: n8lp at telepostinc.com (N8LP) Date: Tue, 22 Jan 2019 11:13:25 -0700 (MST) Subject: [Elecraft] K3 SWR Anomaly In-Reply-To: <5c461c48.1c69fb81.33c3.138b@mx.google.com> References: <5c44ad21.1c69fb81.1d89d.469e@mx.google.com> <5c45ca5e.1c69fb81.27993.f650@mx.google.com> <5c461c48.1c69fb81.33c3.138b@mx.google.com> Message-ID: <1548180805579-0.post@n2.nabble.com> This may be out of left field, but I seem to recall from the deep recesses of my memory that there were some issues regarding an IF trap in the output of the K3. It could be that one of the components in the trap has changed and it now affects 40m. I don't know if newer K3s even have this circuit. Just thinking out loud. Larry N8LP -- Sent from: http://elecraft.365791.n2.nabble.com/ From edauer at law.du.edu Tue Jan 22 13:15:19 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Tue, 22 Jan 2019 18:15:19 +0000 Subject: [Elecraft] K2, K1, W1, and other stuff for Sale Message-ID: Selling principal home, no further need for seven HF transceivers. So the following are for sale. Terms for each are: No pay Pal, shipment on receipt of payment, seller packs, and buyer pays actual shipment cost from Denver, CONUS only and selling to licensed hams only. All items unless otherwise noted are in excellent cosmetic and electrical condition. Nonsmoking environment, never used out of doors or in mobile / portable operations. I have two heavy dimpled main tuning knobs for the K2s. Original cost $90 (as I remember it), option to buy for $50 each with purchase of a K2. Most interconnecting cables for K2s are also available at no additional cost. K2/10 (s/n 7637) with KNB2, KAF2, KAT2, KIO2, KBT2 (with battery), and optional heavy dimple knob. $900. K2/10 (s/n 7687) with KNB2, KSB2, KAF2, KPA100, and KAT100-1 in matching low profile enclosure, with tilt stand. $1,300. K2/10 (s/n 7739) and KAT100/KPA100 in EC-2 enclosure (?twins? configuration). K2 includes KNB2, KSB2, KAT2, KAF2, KIO2. $1,550. K1 (s/n 3440) 17 and 30 meters, with KAT1 internal ATU, KNB1 noise blanker, and KBT1 internal battery adapter. Includes extra cover and speaker (not used when cover with ATU is installed.) Tuned and aligned by Alan Wilcox. $350. Elecraft W1 Power Meter in acrylic case w/stand. $70 KD1JV Triband Transceiver and external ATU (Kit built, never tested.) $100 Pico Keyer condition unknown. Free to whomever buys the first K2 or K1. Ted, KN1CBR Edward A. Dauer Dean Emeritus and Professor Emeritus of Law University of Denver From chrisc at chris.org Tue Jan 22 13:54:36 2019 From: chrisc at chris.org (Chris Cox, N0UK) Date: Tue, 22 Jan 2019 12:54:36 -0600 (CST) Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: References: Message-ID: The transceive problem didn't seem to exist on any older non-synthesized transceiver that I have used, including FT-101 series, TS-520/820 and later, KW Electronics KW-2000E. these were all '70s era transceivers. -- 73 Chris Cox, N0UK, G4JEC chrisc at chris.org From chrisc at chris.org Tue Jan 22 13:51:50 2019 From: chrisc at chris.org (Chris Cox, N0UK) Date: Tue, 22 Jan 2019 12:51:50 -0600 (CST) Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: References: Message-ID: -- 73 Chris Cox, N0UK, G4JEC chrisc at chris.org On Tue, 22 Jan 2019, K9MA wrote: > transmitter before every contact. Spotting required turning one of the rotary > switches on the transmitter, a cumbersome process. Imagine doing that a couple > thousand times in a weekend. At some point, we came up with the idea to hook a > foot switch up to do the spotting, which made it much easier, and save a lot > of wear and tear on the rotary switch, not to mention the operator's wrist. > > In those days, 40-50 years ago, transceivers just didn't work well on CW, so > almost all CW operators used separate transmitters and receivers. Some, like > the Drake line, could transceive, but had the same problem on CW. Transceivers > didn't account for the BFO offset, and there was no RIT or XIT. If you called > another station in transceive mode, you would be 700 Hz or so off frequency. > Two transceivers pretty much couldn't work each other at all. Sometime while I > was inactive in the late 70's and 80's, that problem was solved, and we no > longer had to spot before every contact. I think that solution had to wait for > frequency synthesis, as it otherwise would have required additional > (expensive) crystals. Does anyone know of a non-synthesized transceiver that > didn't have the CW offset problem? > > 73, > Scott K9MA > > > On 1/21/2019 23:09, Wayne Burdick wrote: > > Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- > > are very useful tools for CW operators, especially those not experienced in > > pitch-matching. Here's a bit of history on where these features came from > > and how they work. > > > -- > Scott K9MA > > k9ma at sdellington.us > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to chrisc at chris.org > From ws6x.ars at gmail.com Tue Jan 22 14:27:25 2019 From: ws6x.ars at gmail.com (Jim Clymer) Date: Tue, 22 Jan 2019 14:27:25 -0500 Subject: [Elecraft] Zero Beat / CWT / Auto Spot Message-ID: > > Anyone who has ever had the privilege of being on the receiving end of a > huge CW pileup has a new appreciation for the tone deaf and those who never > learned to use CWT. (And the savvy pileup busters who intentionally avoid zero beat.) Of course there is always the W5 - dead > zero beat - who is so loud you don't hear anyone else no matter how far off > frequency! Jim - WS6X > Date: Mon, 21 Jan 2019 21:09:44 -0800 > From: Wayne Burdick > To: Elecraft Reflector > Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > > CW Spotting History > Tuning Aids: Filtering (APF), PLL (NE567), and Spectral (CWT) > How to Use Auto-Spot > > From rmcgraw at blomand.net Tue Jan 22 15:14:00 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Tue, 22 Jan 2019 14:14:00 -0600 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: <99139b11-a047-0f9d-6981-4a1da33352c6@horizon.co.fk> References: <99AB700D-B876-4319-96AA-33CF6FAC9527@widomaker.com> <99139b11-a047-0f9d-6981-4a1da33352c6@horizon.co.fk> Message-ID: Another trick which works well.?? Tune to a WWV frequency in CW mode.? Press SPOT and the radio will jump on the exact carrier frequency.?? The SPOT function can pull on to the WWV frequency as far away as about 100 Hz.? Once the radio has? resolved SPOT, the readout / display is the frequency of WWV +/- the error in Hz. Thus the readout of 9.999.992 is indicating being 8 Hz low. From a cold start, FP being 19?C, I find? -8 Hz error on 10 MHz WWV.? After about 15 minutes the FP is 25?C and the error is -1 Hz.? I've tweaked the REF CAL such that after 1/2 hr. in receive tuning to WWV from both higher and lower will produce a reading of 10.000.000.?? Will all stations pse QNZ? QNN. 73 Bob, K4TAX From donwilh at embarqmail.com Tue Jan 22 15:19:54 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Tue, 22 Jan 2019 15:19:54 -0500 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: References: Message-ID: <48f3e257-a765-e853-62c6-d20e061093af@embarqmail.com> In that era, SSB capable transceivers often offset the BFO by using a different BFO crystal for CW transmit or CW receive - but that technique slaved you to one sideband and one CW pitch. There were other ways of doing the offset as well, but it was usually done by shifting the BFO frequency. 73, Don W3FPR On 1/22/2019 1:54 PM, Chris Cox, N0UK wrote: > The transceive problem didn't seem to exist on any older non-synthesized > transceiver that I have used, including FT-101 series, TS-520/820 and > later, KW Electronics KW-2000E. these were all '70s era transceivers. > > -- > 73 Chris Cox, N0UK, G4JEC > chrisc at chris.org > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com > From rv6amark at yahoo.com Tue Jan 22 15:26:40 2019 From: rv6amark at yahoo.com (rv6amark) Date: Tue, 22 Jan 2019 12:26:40 -0800 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: Message-ID: Re:? "Does anyone know of a non-synthesized transceiver that didn't have the CW offset problem?" My TenTec 540 doesn't have that problem, but my much older TenTec PM-3A does.? If my memory is correct, the Heathkit HW8 has the problem, but they fixed it in the HW9 with a small capacitor that switches in and out for RX/TX to shift the VFO. There are others. Mark KE6BB Sent via the Samsung Galaxy Tab E, an AT&T 4G LTE tablet -------- Original message --------From: K9MA Date: 1/22/19 9:11 AM (GMT-08:00) To: elecraft at mailman.qth.net Subject: Re: [Elecraft] Auto-spot, tuning aids, ? and the arcane history of CW pitch-matching Back in my college days at W9YT, we had a Drake line, separate transmitter and receivers. When searching and pouncing in a contest, you had to spot the transmitter before every contact. Spotting required turning one of the rotary switches on the transmitter, a cumbersome process. Imagine doing that a couple thousand times in a weekend. At some point, we came up with the idea to hook a foot switch up to do the spotting, which made it much easier, and save a lot of wear and tear on the rotary switch, not to mention the operator's wrist. In those days, 40-50 years ago, transceivers just didn't work well on CW, so almost all CW operators used separate transmitters and receivers. Some, like the Drake line, could transceive, but had the same problem on CW. Transceivers didn't account for the BFO offset, and there was no RIT or XIT. If you called another station in transceive mode, you would be 700 Hz or so off frequency. Two transceivers pretty much couldn't work each other at all. Sometime while I was inactive in the late 70's and 80's, that problem was solved, and we no longer had to spot before every contact. I think that solution had to wait for frequency synthesis, as it otherwise would have required additional (expensive) crystals. Does anyone know of a non-synthesized transceiver that didn't have the CW offset problem? 73, Scott K9MA On 1/21/2019 23:09, Wayne Burdick wrote: > Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially those not experienced in pitch-matching. Here's a bit of history on where these features came from and how they work. -- Scott? K9MA k9ma at sdellington.us ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to rv6amark at yahoo.com From hhoyt at mebtel.net Tue Jan 22 15:27:03 2019 From: hhoyt at mebtel.net (Howard Hoyt) Date: Tue, 22 Jan 2019 15:27:03 -0500 Subject: [Elecraft] [KX3] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: References: Message-ID: <90b12bb3-b6c7-5d34-e454-3e842f7e3b2e@mebtel.net> Hi Mel, I experienced the same reading Wayne's highly informative post!! I started off in 1970 with a homebrew 6L6/807 xtal xmtr with maybe 12 xtals and a Hallicrafters S-38 which gave me hundreds of mesmerizing hours in my parents basement.? That rig gave me my first huge shock as well, so it is indeed memorable.? What idiot thought it was a good idea to put the 500 V B+ connection on an unguarded terminal strip on the back panel?? Wait, that was me... Still, I thought I was in heaven until my high school club bought a Drake R-4B/T-4XB which blew me away and I ended up owning a pair in the early 1980s and still love the Drake twins to this day. However they have been gathering dust since I got my K3, which is the best rig overall I have used to date, and love my KX3 in the car and on travel. Although it works well, I don't use Auto Spot is because it scrambles my feeble brain as to where I am tuned; I am just not used to a rig changing frequency without me intentionally doing it.? Perhaps this is a mental artifact of heavy contesting, where I am loathe to leave a good RUN frequency, indeed I often lock VFO A so I don't accidentally bump the VFO A knob. Cheers & 73, Howie / WA4PSC On 1/22/2019 1:51 PM, Mel Snyder ct_digital_photog at yahoo.com [KX3] wrote: > > Wow, this is *great,* Wayne! Thanks. I am away from home, but will be > interested to test the auto-spot when I get home. > > > A wonderful trip down memory lane. While you were swapping crystals > with your HW-16, I was a few years ahead of you as KN3AFW, swapping > them first into my home-brew 6AG7-6L6 rig, and then, a borrowed Eico 720. > > I still own a lovely Johnson Ranger II, and an SB-301 Heathkit > receiver with the original 500Hz filter, the combination of which > require your explained tuning the VFO to the note of the received > signal. But both are on my list to sell, along with my HW-9 and > FT-707, inasmuch with my KX3 for good band conditions and my > inherited/restored TS-940S when they?re poor, they are all surplus > space-consumers. > > Every time I turn on my KX3, I am in awe of how far ham radio has > progressed in the past 61 years since I was licensed. Like taking a > cell call on my Apple Watch, it?s beyond anything I dreamed of as a > kid back then. So glad I stopped by the Elecraft exhibit at the 2014 > Hartford ARRL convention, and was taken by the enthusiasm of KX3 users > that gathered there - and decided to join the cult. > > Mel, W3PYF > > > >> On Jan 22, 2019, at 12:09 AM, Wayne Burdick n6kr at elecraft.com >> [KX3] > > wrote: >> >> Elecraft's auto-spot and CWT features -- available on the >> K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially >> those not experienced in pitch-matching. Here's a bit of history on >> where these features came from and how they work. >> >> CW Spotting History >> >> When a station finishes a CQ in CW mode, the operator faces the >> challenge of copying someone who's calling back. Callers may be weak >> or obscured by QRM; the op can usually deal with both problems by >> narrowing the filter passband. However, callers may also be off >> frequency. A calling station may be using a wide filter passband >> themselves, not attempting to carefully match their VFO frequency to >> that of the CQing station. The result may be no QSO, even when >> propagation is excellent. >> >> In the Days of Yore, a frequency offset between stations didn't >> always matter. Sometimes both stations used crystal-controlled >> transmitters, so operators had to patient tune around after calling CQ. >> >> As a 14-year-old novice I embraced this operating style for a year or >> so, armed with a dozen or so crusty FT-243 crystals for my Heath >> HW-16. I nearly wore out the socket swapping them in and out. After >> calling CQ, it was not unusual to find a caller 30 or more kHz away! >> (Away from "where" was a poorly answered question, as my >> Hallicrafters receiver dial wasn't exactly digital.) >> >> Fortunately I soon acquired an outboard VFO, a life-changing addition >> to my station. Jealous friends doubled up on their paper routes to >> pay for their own. Girls suddenly paid more attention to me. >> >> These days virtually everyone has a VFO, along with the expectation >> that they won't have to tune theirs very far, if at all, to tune you >> in. Not only that, they're stable and well calibrated, not like the >> beasts we had to skillfully tame. Progress! >> >> Manual Spotting (SPOT switch) >> >> Once I had a VFO I quickly learned to do *manual* pitch matching. >> Older rigs did't provide a way to do that explicitly, so you'd >> improvise. Basically, you had to coerce a very weak signal out of >> your own transmitter, say by turning on only the driver, then tune >> the transmit VFO until you could hear your signal on your own >> receiver -- superimposed on the calling station, at the same pitch. >> This is what we call spotting. >> >> Of course spotting is a lot more convenient these days, as many rigs >> include a SPOT switch. This function is easy for a modern transceiver >> designer to add, because the radio's firmware is quite capable of >> turning on only the CW sidetone without transmitting. >> >> That is the purpose of the SPOT switch on all Elecraft transceivers. >> Tap SPOT, and you'll hear your sidetone pitch. Most people can do a >> good job of adjusting the VFO such that the CQing station's pitch >> matches that of the SPOT tone. This ensures that when you call them, >> you'll be close to their own frequency. >> >> Tuning Aids: Filtering (APF), PLL (NE567), and Spectral (CWT) >> >> Since not everyone has an inherent musical ear, various >> hardware-enhanced means of tuning in CW signals have been developed. >> >> The simplest method is to just narrow your receiver passband so much >> that, if you can hear a station calling CQ at all, you're guaranteed >> to be "right on top of him." This assumes that your transceiver >> enforces alignment between its transmit and receive pitch...true of >> all Elecraft gear. >> >> Narrow filtering has gone through decades of evolution. Some filters >> were based on op-amps (active filters), while others were based on LC >> filtering, conscripting humongous toroidal cores scavenged from telco >> equipment. I acquired my stash of these from a haphazard mound of old >> switching racks, decaying in an abandoned aircraft hanger on the >> Bermuda U.S. Navy base. (That irresistible junk pile was also a >> mother load of TO5 transistors, multi-pound electrolytic capacitors, >> and tetanus, but that's another story.) Typically the toroids were 88 >> millihenries -- a huge value for a high-Q inductor, permitting >> resonance in the low audio range. >> >> Later, such filters migrated to digital signal processing, in the >> form of switched-capacitor ICs or DSPs. You can still buy these >> switched-capacitor chips, like the MF10, from various sources. It's >> instructive to roll your own tunable filter, just for fun. >> >> Whether passive or active, the goal of filtering is typically to >> achieve a narrow passband, say 250 Hz or less. With DSP, nearly >> perfect filters with "brick wall" passbands can be created. But these >> have the disadvantage of ringing like a bell when pinged by a CW >> signal or noise, making copy difficult. >> >> One solution incorporated into the K-line and KX-line is the Audio >> Peaking Filter (APF), which provides a 30-Hz bandwidth at -3 dB, but >> broad skirts, preventing ringing from occurring. As our customers >> will attest, APF works like magic on weak signals obscured by noise. >> >> Another forerunner to DSP techniques was the audio phase-locked-loop, >> using inexpensive ICs like the legendary LM567. When locked on a >> signal that matched its center frequency, the circuit would turn on >> an LED, alerting the operator that the VFO was now properly tuned. >> >> With the DSPs in our K-line and KX-line radios, we can provide a much >> more powerful tool: CWT, or "CW Tuning Aid." When enabled, CWT turns >> the upper portion of the rig's S-meter into something of a mini >> spectrum analyzer. The pitch of the strongest signal in the passband >> is analyzed by the DSP, then represented as a single segment of the >> bar graph. For CWT-enhanced manual spotting, the operator simply >> tunes the VFO slowly until the center CWT segment is flashing along >> with the keyed signal. >> >> Manual tuning with CWT can also be used in FSK-D and PSK-D modes as >> described in the owner's manual.. >> >> Closing the Loop: Auto-Spotting (SPOT + CWT) >> >> The Elecraft K3/K3S/KX2/KX3 take CW tuning another step forward by >> providing a way to *automatically* retune the VFO frequency to match >> that of a received signal. How does this work? >> >> When CWT is turned on, firmware treats the SPOT switch as AUTO-SPOT. >> The DSP analyzes the incoming signal, and with a bit of processing, >> determines its exact audio pitch. From there all that's needed is a >> bit of math to offset the VFO to match this pitch to the CW sidetone. >> >> There's another subtlety, though. Since a CW signal is generally >> being keyed on and off, the CWT algorithm has to ensure that it >> doesn't "take off," chasing a signal that's not there. To avoid this, >> we keep track of the energy in the passband, and slew the VFO >> incrementally over an average of about 0.5 second, moving only when >> the target signal is present. >> >> How to Use Auto-Spot >> >> I encourage you to give the auto-spot feature a try. It's best to >> start with a fairly narrow passband, say 400-600 Hz; narrower if >> there's a lot of QRM. Find a signal, turn on CWT, then tap SPOT to >> tune it in. A second tap of SPOT may get even closer, especially if >> there's a lot of band noise. >> >> Auto-spot can also be used in Elecraft's PSK-D mode, i.e. for >> PSK31/PSK63. As with CW mode, just turn on CWT, tune in a prospective >> signal, and tap SPOT. Since PSK auto-decoding requires very accurate >> tuning, it's best to set the filter bandwidth to 50 Hz, then let >> auto-spot dial things in down to the last 2 or 3 Hz. If you have text >> decode turned on, you should start seeing text characters scroll by >> after auto-tuning has completed. Tapping a second time or fine-tuning >> the VFO a bit in 1 Hz steps may improve copy. >> >> 73, >> Wayne >> N6KR >> > > __._,_.___ > ------------------------------------------------------------------------ > Posted by: Mel Snyder > ------------------------------------------------------------------------ > Reply via web post > > ? Reply to sender > > ? Reply to group > > ? Start a New Topic > > ? Messages in this topic > > (2) > > ------------------------------------------------------------------------ > Have you tried the highest rated email app? > With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated > email app on the market. What are you waiting for? Now you can access > all your inboxes (Gmail, Outlook, AOL and more) in one place. Never > delete an email again with 1000GB of free cloud storage. > ------------------------------------------------------------------------ > Visit Your Group > > > > Yahoo! Groups > > > ? Privacy > ? > Unsubscribe > ? Terms > of Use > > SPONSORED LINKS > . > > __,_._,___ From n8sbe at arrl.net Tue Jan 22 15:45:13 2019 From: n8sbe at arrl.net (Dave New, N8SBE) Date: Tue, 22 Jan 2019 13:45:13 -0700 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching Message-ID: <20190122134513.1fa1e31b6b6b329ecc65be958babcc1f.2b096db9da.wbe@email09.godaddy.com> When I upgraded from my K3 to a K3s, I took the opportunity to order a 10 MHz Ref In option. I finally got around to hooking it up to a Leo Bodnar GPS receiver I picked up at Dayton a year ago, and now the K3s is rock solid spot on frequency. Don't know how i did without it all these years... 73, -- Dave, N8SBE -------- Original Message -------- Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching From: Bob McGraw K4TAX Date: Tue, January 22, 2019 3:14 pm To: elecraft at mailman.qth.net Another trick which works well. Tune to a WWV frequency in CW mode. Press SPOT and the radio will jump on the exact carrier frequency. The SPOT function can pull on to the WWV frequency as far away as about 100 Hz. Once the radio has resolved SPOT, the readout / display is the frequency of WWV +/- the error in Hz. Thus the readout of 9.999.992 is indicating being 8 Hz low. From a cold start, FP being 19?C, I find -8 Hz error on 10 MHz WWV. After about 15 minutes the FP is 25?C and the error is -1 Hz. I've tweaked the REF CAL such that after 1/2 hr. in receive tuning to WWV from both higher and lower will produce a reading of 10.000.000. Will all stations pse QNZ QNN. 73 Bob, K4TAX From n8sbe at arrl.net Tue Jan 22 15:47:04 2019 From: n8sbe at arrl.net (Dave New, N8SBE) Date: Tue, 22 Jan 2019 13:47:04 -0700 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching Message-ID: <20190122134704.1fa1e31b6b6b329ecc65be958babcc1f.b1b5d245eb.wbe@email09.godaddy.com> I'm a great fan of using the auto-spot feature, and love to show it off to all shack visitors, as an example of yet another reason they need to upgrade to Elecraft, from whatever boat anchor they are still using... 73, -- Dave, N8SBE From n6kr at elecraft.com Tue Jan 22 15:57:16 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Tue, 22 Jan 2019 12:57:16 -0800 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? Message-ID: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. Any other antenna suggestions? Wayne N6KR ---- elecraft.com From a.durbin at msn.com Tue Jan 22 15:57:26 2019 From: a.durbin at msn.com (Andy Durbin) Date: Tue, 22 Jan 2019 20:57:26 +0000 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching Message-ID: "Find a signal, turn on CWT, then tap SPOT to tune it in. A second tap of SPOT may get even closer, especially if there's a lot of band noise." and "I'm a great fan of using the auto-spot feature, and love to show it off to all shack visitors, as an example of yet another reason they need to upgrade to Elecraft," I must be missing something. How is this 2 step activated spot feature better than a single press of Kenwood's CWT? I often use CWT on my TS-590S but almost always with a spit or XIT offset (I didn't know that was a secret). Andy, k3wyc From wes_n7ws at triconet.org Tue Jan 22 16:01:33 2019 From: wes_n7ws at triconet.org (Wes) Date: Tue, 22 Jan 2019 14:01:33 -0700 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: <20190122134513.1fa1e31b6b6b329ecc65be958babcc1f.2b096db9da.wbe@email09.godaddy.com> References: <20190122134513.1fa1e31b6b6b329ecc65be958babcc1f.2b096db9da.wbe@email09.godaddy.com> Message-ID: <619ac274-ad1e-282d-8b1e-0b37685b0e74@triconet.org> Are you serious? Wes? N7WS On 1/22/2019 1:45 PM, Dave New, N8SBE wrote: > Don't know how i did without it all these years... > > 73, > > -- Dave, N8SBE > From ab2tc at arrl.net Tue Jan 22 16:01:52 2019 From: ab2tc at arrl.net (ab2tc) Date: Tue, 22 Jan 2019 14:01:52 -0700 (MST) Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: References: Message-ID: <1548190912091-0.post@n2.nabble.com> Hi all, Agreed; the problem can easily be solved in analog radios without frequency synthesis by offsetting the BFO frequency by those 700Hz or so in transmit. In down conversion machines with a single IF in the 8-9MHz range that could easily be done by pulling the BFO crystal. The Drake TR4 undoubtedly worked this way. I bought my first transceiver in 1969 (I think), a Yaesu FT-200, I think it was called in the US. In Europe it was sold as Sommerkamp FT-250. As the Drake TR4 it was down conversion with a single 9MHz IF and worked CW by pulling the BFO crystal into the passband of the 9MHz crystal filter on transmit. Another technical solution, which was used in the Collins KWM2 (and probably KWM1) was to keep the balanced (de)modulator balanced and inject an audio tone into it on transmit. Clearly the spectral purity of the CW signal would be less than ideal in this case, but I am not sure if FCC type approval was needed in those days. Nor am I sure what the the FCC spec for "inband" (read close in) spurs would be. AB2TC - Knut n0uk wrote > The transceive problem didn't seem to exist on any older non-synthesized > transceiver that I have used, including FT-101 series, TS-520/820 and > later, KW Electronics KW-2000E. these were all '70s era transceivers. > > > > -- > 73 Chris Cox, N0UK, G4JEC > chrisc@ > > _ > -- Sent from: http://elecraft.365791.n2.nabble.com/ From marklgoldberg at gmail.com Tue Jan 22 16:32:47 2019 From: marklgoldberg at gmail.com (Mark Goldberg) Date: Tue, 22 Jan 2019 14:32:47 -0700 Subject: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> Message-ID: I would expect any high Q antenna like a loop would be detuned by any movement or any metal you pass by. One more reason to support automatic mobile screwdriver / mag loop antenna tuning on the KX series. A flag on a backpack would be more or less ignored. Just put a flag on the top of the AX1. Counterpoise is an issue though. Maybe a short one down your leg? Now, if you dressed as a homeless or otherwise distressed person, lots of weird things are possible, tinfoil hat with a big flag, dragged wire disguised as one of those fake animals on a leash, etc. The weirder, the more people will ignore you. Hopefully taken in the spirit of which it is posted. 73, Mark W7MLG On Tue, Jan 22, 2019 at 1:57 PM Wayne Burdick n6kr at elecraft.com [KX3] < KX3-noreply at yahoogroups.com> wrote: > > > I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 > antenna and a dragged counterpoise. In wide open spaces it?s a blast. But > urban settings with dogs, wire-eating cacti and overzealous Neighborhood > Watchers can distract from one?s radio experience. > > So, just for grins, I?d like to try something completely incognerdo: no > visible antenna. A small remotely tuned loop (say 12? diameter) would seem > to be the best choice, as it would fit entirely inside a small backpack. It > could have modest efficiency while not requiring a counterpoise wire. > Rigid 1? copper pipe formed in a square would be convenient to deploy. > > The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, > of course. OTOH, we?re talking about HF. A cellphone by your ear is > probably worse. > > Any other antenna suggestions? > > Wayne > N6KR > > > > ---- > elecraft.com > > __._,_.___ > ------------------------------ > Posted by: Wayne Burdick > ------------------------------ > Reply via web post > > ? Reply to sender > > ? Reply to group > > ? Start a New Topic > > ? Messages in this topic > > (1) > ------------------------------ > Have you tried the highest rated email app? > With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email > app on the market. What are you waiting for? Now you can access all your > inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email > again with 1000GB of free cloud storage. > ------------------------------ > Visit Your Group > > > > [image: Yahoo! Groups] > > ? Privacy ? > Unsubscribe ? Terms > of Use > > SPONSORED LINKS > . > > __,_._,___ > From stevesgt at effable.com Tue Jan 22 16:38:35 2019 From: stevesgt at effable.com (Steve Sergeant) Date: Tue, 22 Jan 2019 13:38:35 -0800 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> Message-ID: <63fb5351-46b5-0d73-e53d-ba852f6543b7@effable.com> On 1/22/19 12:57 PM, Wayne Burdick wrote: > A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. [Deletia] > Any other antenna suggestions? I tried a 52ft 26ga wire J-pole/Zep on the line of a 5ft parafoil kite, with 50ft of kite line above the antenna, and another 50' of RG-174 between the antenna and the radio. I'll grant that this is not as invisible as your idea. But I felt reasonably inconspicuous working SSB with cell-phone type earbuds (w/mic), and the KX2 in an open waist-pack, out in an open field of a large city park. People just thought I was on a phone call while flying the kite. It helped that there were several other kite-fliers in the park that day. It was not a particularly good day for propagation, but I did work Las Vegas and Spokane from Silicon Valley with under 10W on 20m. From k9jri at mac.com Tue Jan 22 16:40:04 2019 From: k9jri at mac.com (Michael Blake) Date: Tue, 22 Jan 2019 16:40:04 -0500 Subject: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> Message-ID: <53CCB8BD-BFF8-46CC-83AC-0F0A12D89C88@mac.com> Mark (W7MLG), It is scary how perfectly sane and normal your suggestions sound to me :) Very 73 - Mike - K9JRI > On Jan 22, 2019, at 4:32 PM, Mark Goldberg wrote: > > I would expect any high Q antenna like a loop would be detuned by any > movement or any metal you pass by. One more reason to support automatic > mobile screwdriver / mag loop antenna tuning on the KX series. > A flag on a backpack would be more or less ignored. Just put a flag on the > top of the AX1. Counterpoise is an issue though. Maybe a short one down > your leg? > > Now, if you dressed as a homeless or otherwise distressed person, lots of > weird things are possible, tinfoil hat with a big flag, dragged wire > disguised as one of those fake animals on a leash, etc. The weirder, the > more people will ignore you. > > Hopefully taken in the spirit of which it is posted. > > 73, > > Mark > W7MLG > > > On Tue, Jan 22, 2019 at 1:57 PM Wayne Burdick n6kr at elecraft.com [KX3] < > KX3-noreply at yahoogroups.com> wrote: > From k9ma at sdellington.us Tue Jan 22 16:41:14 2019 From: k9ma at sdellington.us (K9MA) Date: Tue, 22 Jan 2019 15:41:14 -0600 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: References: <99AB700D-B876-4319-96AA-33CF6FAC9527@widomaker.com> <99139b11-a047-0f9d-6981-4a1da33352c6@horizon.co.fk> Message-ID: <089118fa-b031-7b6d-b2b6-c31ff6dda385@sdellington.us> On 1/22/2019 14:14, Bob McGraw K4TAX wrote: > Another trick which works well.?? Tune to a WWV frequency in CW mode. > Press SPOT and the radio will jump on the exact carrier frequency. You can do the same thing, of course, by listening to the beat between the sidetone and the carrier. I was able to get 3 Hz closer that way, within the 1 Hz tuning resolution. 3 Hz is close enough, though. When listening for the beats, you have to match the volume of the sidetone and carrier, or you won't hear them. You don't need a musical ear, just a functioning one. 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us From ghyoungman at gmail.com Tue Jan 22 16:46:03 2019 From: ghyoungman at gmail.com (Grant Youngman) Date: Tue, 22 Jan 2019 16:46:03 -0500 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> Message-ID: <066C8920-E8FF-4D53-8366-F1CB675F4DB9@gmail.com> The problem is loop diameter. Efficiency on 20m of a 12? diameter loop would be on the order of 5%. Forget it entirely on 40m .. essentially a dummy load that would take around 1200 pf to resonate. On 17m efficiency would go up to around 11%. I use a loop portable all the time (Alexloop, W4OP) and they work well. They?re both about 3 ft in diameter. The Alexloop is light enough to be carried around hand held ... the W4OP needs a table top or tripod. Grant NQ5T Sent from my iPhone > On Jan 22, 2019, at 3:57 PM, Wayne Burdick wrote: > > > > So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. > > The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. > > Any other antenna suggestions? > > Wayne > From k9ma at sdellington.us Tue Jan 22 16:51:00 2019 From: k9ma at sdellington.us (K9MA) Date: Tue, 22 Jan 2019 15:51:00 -0600 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <066C8920-E8FF-4D53-8366-F1CB675F4DB9@gmail.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> <066C8920-E8FF-4D53-8366-F1CB675F4DB9@gmail.com> Message-ID: <9ef9fe8c-52c4-318e-bb94-0c40229836c8@sdellington.us> On 1/22/2019 15:46, Grant Youngman wrote: > The problem is loop diameter. It doesn't have to be round. 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us From KY5G at montac.com Tue Jan 22 17:01:56 2019 From: KY5G at montac.com (Clay Autery) Date: Tue, 22 Jan 2019 16:01:56 -0600 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> Message-ID: Consider integrating the loop into a purpose built/modified backpack...? or the frame. You can get a larger enclosed area, maintain easier use of the pack's volume without jacking up the loop, and better insure the loop geometry doesn't change as you pack/move/use it. With a little creativity, yiu could also integrate some variable tuning into the design with access by hand if you place the adjusrable parts in the right location... If you do switch in/out parts, it could be just a switch setup on the torso strap... If QRP, I'd try to use the frame or an extension thereof... Even the flexible plastic stiffeners in some frames could be used to carry a loop wire. Good luck! 73, ClayKY5G Sent from my Verizon, Samsung Galaxy smartphone -------- Original message --------From: Wayne Burdick Date: 1/22/19 14:57 (GMT-06:00) To: Elecraft Cc: KX3 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have? modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course.? OTOH, we?re talking about HF. A cellphone by your ear is probably worse. Any other antenna suggestions? Wayne N6KR ---- elecraft.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ky5g at montac.com From ghyoungman at gmail.com Tue Jan 22 17:09:56 2019 From: ghyoungman at gmail.com (Grant Youngman) Date: Tue, 22 Jan 2019 17:09:56 -0500 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <9ef9fe8c-52c4-318e-bb94-0c40229836c8@sdellington.us> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> <066C8920-E8FF-4D53-8366-F1CB675F4DB9@gmail.com> <9ef9fe8c-52c4-318e-bb94-0c40229836c8@sdellington.us> Message-ID: <2505C114-46DB-4ECC-B5B3-2020E74AE809@gmail.com> Yes, it does not have to be round. The actual measurement of interest is Circumference of whatever shape it is (e.g, the total length of the radiator). A 12? loop or square, or whatever, is still going to have a very low efficiency at this size point. But closer to rounder is better ? Grant NQ5T K3 #2091 KX3 #8342 > On Jan 22, 2019, at 4:51 PM, K9MA wrote: > > On 1/22/2019 15:46, Grant Youngman wrote: >> The problem is loop diameter. > > It doesn't have to be round. > > 73, > > Scott K9MA > > > -- From k9ma at sdellington.us Tue Jan 22 17:17:12 2019 From: k9ma at sdellington.us (K9MA) Date: Tue, 22 Jan 2019 16:17:12 -0600 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <2505C114-46DB-4ECC-B5B3-2020E74AE809@gmail.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> <066C8920-E8FF-4D53-8366-F1CB675F4DB9@gmail.com> <9ef9fe8c-52c4-318e-bb94-0c40229836c8@sdellington.us> <2505C114-46DB-4ECC-B5B3-2020E74AE809@gmail.com> Message-ID: <545c324a-10cf-613a-030d-31ba07b6d064@sdellington.us> There's undoubtedly a trade-off between rounder and longer. I was thinking of a typical more or less rectangular backpack, which would have a circumference much larger than a 12 inch circle. A typical backpacking pack could accommodate a circumference of about 88 inches, more than twice that of a 12 inch round loop. Granted, such a large pack wouldn't exactly be inconspicuous on an urban hiking trail, but you could always put some rocks in it, and pretend you're training for a Grand Canyon hike. 73, Scott K9MA On 1/22/2019 16:09, Grant Youngman wrote: > Yes, it does not have to be round. ?The actual measurement of interest > is Circumference of whatever shape it is (e.g, the total length of the > radiator). ?A 12? loop or square, or whatever, ?is still going to have > a very low efficiency at this size point. ?But closer to rounder is > better ? > > Grant NQ5T > K3 #2091 KX3 #8342 > >> On Jan 22, 2019, at 4:51 PM, K9MA > > wrote: >> >> On 1/22/2019 15:46, Grant Youngman wrote: >>> The problem is loop diameter. >> >> It doesn't have to be round. >> >> 73, >> >> Scott K9MA >> >> >> -- > -- Scott K9MA k9ma at sdellington.us From turnbull at net1.ie Tue Jan 22 17:24:49 2019 From: turnbull at net1.ie (turnbull) Date: Tue, 22 Jan 2019 22:24:49 +0000 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <2505C114-46DB-4ECC-B5B3-2020E74AE809@gmail.com> Message-ID: <5c479834.1c69fb81.e4b5a.f26f@mx.google.com> Why not a collapsible Alexloop mag loop which fits in your back pack and will be nore efficient.? ? 73 Doug EI2CN Sent from my Samsung Galaxy smartphone. -------- Original message --------From: Grant Youngman Date: 22/01/2019 22:09 (GMT+00:00) To: K9MA Cc: elecraft at mailman.qth.net Subject: Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? Yes, it does not have to be round.? The actual measurement of interest is Circumference of whatever shape it is (e.g, the total length of the radiator).? A 12? loop or square, or whatever,? is still going to have a very low efficiency at this size point.? But closer to rounder is better ? Grant NQ5T K3 #2091 KX3 #8342 > On Jan 22, 2019, at 4:51 PM, K9MA wrote: > > On 1/22/2019 15:46, Grant Youngman wrote: >> The problem is loop diameter. > > It doesn't have to be round. > > 73, > > Scott K9MA > > > -- ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to turnbull at net1.ie From stevesgt at effable.com Tue Jan 22 17:26:34 2019 From: stevesgt at effable.com (Steve Sergeant) Date: Tue, 22 Jan 2019 14:26:34 -0800 Subject: [Elecraft] Ferrite Rod? (was: Urban stealth HF...) In-Reply-To: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> Message-ID: <63af7962-16c6-c0bd-b849-6779599a9975@effable.com> Just as a way-out idea: How about a large ferrite rod on the end of a walking staff, on top of a backpack, or hidden inside a top-hat? [ https://sites.google.com/site/g3xbmqrp3/antennas/ferrite_tx ] On 1/22/19 12:57 PM, Wayne Burdick wrote: > So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. > > The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. > > Any other antenna suggestions? > > Wayne > N6KR From k7sz at live.com Tue Jan 22 17:59:32 2019 From: k7sz at live.com (Rich Arland) Date: Tue, 22 Jan 2019 22:59:32 +0000 Subject: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <53CCB8BD-BFF8-46CC-83AC-0F0A12D89C88@mac.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> , <53CCB8BD-BFF8-46CC-83AC-0F0A12D89C88@mac.com> Message-ID: Ref: Homless......let's not forget the ever present shopping cart! Get a BIG one. It can be used as a counter poise in place of a set of radials or a drag wire. One could also try loading the shopping cart and using it as an antenna since the wheels are composed of a non-conductive set of wheels so the cart would be above ground. Just sayin' Vy 73 es gud DX! Rich Arland K7SZ WPE7BYR Radio/electronics archaeologist Author: The ARRL's Low Power Communicatoions Bent Dipole Ranch, Dacula, GA http://commobunker.blogspot.com/ ________________________________ From: elecraft-bounces at mailman.qth.net on behalf of Michael Blake via Elecraft Sent: Tuesday, January 22, 2019 4:40 PM To: Mark Goldberg Cc: Elecraft Reflector; KX3 Subject: Re: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack loop antenna? Mark (W7MLG), It is scary how perfectly sane and normal your suggestions sound to me :) Very 73 - Mike - K9JRI > On Jan 22, 2019, at 4:32 PM, Mark Goldberg wrote: > > I would expect any high Q antenna like a loop would be detuned by any > movement or any metal you pass by. One more reason to support automatic > mobile screwdriver / mag loop antenna tuning on the KX series. > A flag on a backpack would be more or less ignored. Just put a flag on the > top of the AX1. Counterpoise is an issue though. Maybe a short one down > your leg? > > Now, if you dressed as a homeless or otherwise distressed person, lots of > weird things are possible, tinfoil hat with a big flag, dragged wire > disguised as one of those fake animals on a leash, etc. The weirder, the > more people will ignore you. > > Hopefully taken in the spirit of which it is posted. > > 73, > > Mark > W7MLG > > > On Tue, Jan 22, 2019 at 1:57 PM Wayne Burdick n6kr at elecraft.com [KX3] < > KX3-noreply at yahoogroups.com> wrote: > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k7sz at live.com From Tbry441 at myfairpoint.net Tue Jan 22 18:11:18 2019 From: Tbry441 at myfairpoint.net (Thaire Bryant) Date: Tue, 22 Jan 2019 18:11:18 -0500 Subject: [Elecraft] Elecraft Digest, Vol 177, Issue 36 In-Reply-To: References: Message-ID: <8DE822E3-CF74-460B-8A93-28352E1D1E6E@myfairpoint.net> Ed, I?d like the K1. Thaire. W2APF > On Jan 22, 2019, at 16:41, elecraft-request at mailman.qth.net wrote: > > Send Elecraft mailing list submissions to > elecraft at mailman.qth.net > > To subscribe or unsubscribe via the World Wide Web, visit > http://mailman.qth.net/mailman/listinfo/elecraft > or, via email, send a message with subject or body 'help' to > elecraft-request at mailman.qth.net > > You can reach the person managing the list at > elecraft-owner at mailman.qth.net > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Elecraft digest..." > > > Today's Topics: > > 1. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (Mike Harris) > 2. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (David Gilbert) > 3. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (K9MA) > 4. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (K9MA) > 5. Re: K3 SWR Anomaly (N8LP) > 6. K2, K1, W1, and other stuff for Sale (Dauer, Edward) > 7. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (Chris Cox, N0UK) > 8. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (Chris Cox, N0UK) > 9. Zero Beat / CWT / Auto Spot (Jim Clymer) > 10. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (Bob McGraw K4TAX) > 11. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (Don Wilhelm) > 12. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (rv6amark) > 13. Re: [KX3] Auto-spot, tuning aids, and the arcane history of > CW pitch-matching (Howard Hoyt) > 14. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (Dave New, N8SBE) > 15. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (Dave New, N8SBE) > 16. Urban stealth HF: Inside-the-backpack loop antenna? > (Wayne Burdick) > 17. Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (Andy Durbin) > 18. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (Wes) > 19. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (ab2tc) > 20. Re: [KX3] Urban stealth HF: Inside-the-backpack loop antenna? > (Mark Goldberg) > 21. Re: Urban stealth HF: Inside-the-backpack loop antenna? > (Steve Sergeant) > 22. Re: [KX3] Urban stealth HF: Inside-the-backpack loop antenna? > (Michael Blake) > 23. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (K9MA) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 22 Jan 2019 13:28:28 -0300 > From: Mike Harris > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: <99139b11-a047-0f9d-6981-4a1da33352c6 at horizon.co.fk> > Content-Type: text/plain; charset=utf-8; format=flowed > > Yet another trick learnt by hard experience given away for free :-( > > Regards, > > Mike VP8NO > >> On 22/01/2019 11:14, Nr4c wrote: >> Now, one thing you missed... when you?re working a big pileup and you feel you just can?t get through, it may be that all your ?buddies? are doing the same thing, using Auto-Spot! >> >> Now turn on XIT and set it to 12-20 Hz either way. Now your signal will be just a little different from all the others and you have a better chance of being heard. >> >> Sent from my iPhone >> ...nr4c. bill > > > ------------------------------ > > Message: 2 > Date: Tue, 22 Jan 2019 09:59:04 -0700 > From: David Gilbert > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: > Content-Type: text/plain; charset=utf-8; format=flowed > > > Wayne, you forgot clicking on the DX Cluster spot.? ;) > > I'm being facetious, of course, but the practice of simply clicking on a > cluster spot does point out a problem with zero beating by any means ... > if every calling station is zero beat the station calling CQ isn't going > to copy anyone. > > Zero beat isn't always a good thing. > > 73, > Dave? AB7E > > >> On 1/21/2019 10:09 PM, Wayne Burdick wrote: >> Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially those not experienced in pitch-matching. Here's a bit of history on where these features came from and how they work. >> >> >> CW Spotting History >> >> When a station finishes a CQ in CW mode, the operator faces the challenge of copying someone who's calling back. Callers may be weak or obscured by QRM; the op can usually deal with both problems by narrowing the filter passband. However, callers may also be off frequency. A calling station may be using a wide filter passband themselves, not attempting to carefully match their VFO frequency to that of the CQing station. The result may be no QSO, even when propagation is excellent. >> >> In the Days of Yore, a frequency offset between stations didn't always matter. Sometimes both stations used crystal-controlled transmitters, so operators had to patient tune around after calling CQ. >> >> As a 14-year-old novice I embraced this operating style for a year or so, armed with a dozen or so crusty FT-243 crystals for my Heath HW-16. I nearly wore out the socket swapping them in and out. After calling CQ, it was not unusual to find a caller 30 or more kHz away! (Away from "where" was a poorly answered question, as my Hallicrafters receiver dial wasn't exactly digital.) >> >> Fortunately I soon acquired an outboard VFO, a life-changing addition to my station. Jealous friends doubled up on their paper routes to pay for their own. Girls suddenly paid more attention to me. >> >> These days virtually everyone has a VFO, along with the expectation that they won't have to tune theirs very far, if at all, to tune you in. Not only that, they're stable and well calibrated, not like the beasts we had to skillfully tame. Progress! >> >> >> Manual Spotting (SPOT switch) >> >> Once I had a VFO I quickly learned to do *manual* pitch matching. Older rigs did't provide a way to do that explicitly, so you'd improvise. Basically, you had to coerce a very weak signal out of your own transmitter, say by turning on only the driver, then tune the transmit VFO until you could hear your signal on your own receiver -- superimposed on the calling station, at the same pitch. This is what we call spotting. >> >> Of course spotting is a lot more convenient these days, as many rigs include a SPOT switch. This function is easy for a modern transceiver designer to add, because the radio's firmware is quite capable of turning on only the CW sidetone without transmitting. >> >> That is the purpose of the SPOT switch on all Elecraft transceivers. Tap SPOT, and you'll hear your sidetone pitch. Most people can do a good job of adjusting the VFO such that the CQing station's pitch matches that of the SPOT tone. This ensures that when you call them, you'll be close to their own frequency. >> >> >> Tuning Aids: Filtering (APF), PLL (NE567), and Spectral (CWT) >> >> Since not everyone has an inherent musical ear, various hardware-enhanced means of tuning in CW signals have been developed. >> >> The simplest method is to just narrow your receiver passband so much that, if you can hear a station calling CQ at all, you're guaranteed to be "right on top of him." This assumes that your transceiver enforces alignment between its transmit and receive pitch...true of all Elecraft gear. >> >> Narrow filtering has gone through decades of evolution. Some filters were based on op-amps (active filters), while others were based on LC filtering, conscripting humongous toroidal cores scavenged from telco equipment. I acquired my stash of these from a haphazard mound of old switching racks, decaying in an abandoned aircraft hanger on the Bermuda U.S. Navy base. (That irresistible junk pile was also a mother load of TO5 transistors, multi-pound electrolytic capacitors, and tetanus, but that's another story.) Typically the toroids were 88 millihenries -- a huge value for a high-Q inductor, permitting resonance in the low audio range. >> >> Later, such filters migrated to digital signal processing, in the form of switched-capacitor ICs or DSPs. You can still buy these switched-capacitor chips, like the MF10, from various sources. It's instructive to roll your own tunable filter, just for fun. >> >> Whether passive or active, the goal of filtering is typically to achieve a narrow passband, say 250 Hz or less. With DSP, nearly perfect filters with "brick wall" passbands can be created. But these have the disadvantage of ringing like a bell when pinged by a CW signal or noise, making copy difficult. >> >> One solution incorporated into the K-line and KX-line is the Audio Peaking Filter (APF), which provides a 30-Hz bandwidth at -3 dB, but broad skirts, preventing ringing from occurring. As our customers will attest, APF works like magic on weak signals obscured by noise. >> >> Another forerunner to DSP techniques was the audio phase-locked-loop, using inexpensive ICs like the legendary LM567. When locked on a signal that matched its center frequency, the circuit would turn on an LED, alerting the operator that the VFO was now properly tuned. >> >> With the DSPs in our K-line and KX-line radios, we can provide a much more powerful tool: CWT, or "CW Tuning Aid." When enabled, CWT turns the upper portion of the rig's S-meter into something of a mini spectrum analyzer. The pitch of the strongest signal in the passband is analyzed by the DSP, then represented as a single segment of the bar graph. For CWT-enhanced manual spotting, the operator simply tunes the VFO slowly until the center CWT segment is flashing along with the keyed signal. >> >> Manual tuning with CWT can also be used in FSK-D and PSK-D modes as described in the owner's manual. >> >> >> Closing the Loop: Auto-Spotting (SPOT + CWT) >> >> The Elecraft K3/K3S/KX2/KX3 take CW tuning another step forward by providing a way to *automatically* retune the VFO frequency to match that of a received signal. How does this work? >> >> When CWT is turned on, firmware treats the SPOT switch as AUTO-SPOT. The DSP analyzes the incoming signal, and with a bit of processing, determines its exact audio pitch. From there all that's needed is a bit of math to offset the VFO to match this pitch to the CW sidetone. >> >> There's another subtlety, though. Since a CW signal is generally being keyed on and off, the CWT algorithm has to ensure that it doesn't "take off," chasing a signal that's not there. To avoid this, we keep track of the energy in the passband, and slew the VFO incrementally over an average of about 0.5 second, moving only when the target signal is present. >> >> >> How to Use Auto-Spot >> >> I encourage you to give the auto-spot feature a try. It's best to start with a fairly narrow passband, say 400-600 Hz; narrower if there's a lot of QRM. Find a signal, turn on CWT, then tap SPOT to tune it in. A second tap of SPOT may get even closer, especially if there's a lot of band noise. >> >> Auto-spot can also be used in Elecraft's PSK-D mode, i.e. for PSK31/PSK63. As with CW mode, just turn on CWT, tune in a prospective signal, and tap SPOT. Since PSK auto-decoding requires very accurate tuning, it's best to set the filter bandwidth to 50 Hz, then let auto-spot dial things in down to the last 2 or 3 Hz. If you have text decode turned on, you should start seeing text characters scroll by after auto-tuning has completed. Tapping a second time or fine-tuning the VFO a bit in 1 Hz steps may improve copy. >> >> 73, >> Wayne >> N6KR >> >> >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to xdavid at cis-broadband.com >> > > > > ------------------------------ > > Message: 3 > Date: Tue, 22 Jan 2019 11:11:30 -0600 > From: K9MA > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: > Content-Type: text/plain; charset=utf-8; format=flowed > > Back in my college days at W9YT, we had a Drake line, separate > transmitter and receivers. When searching and pouncing in a contest, you > had to spot the transmitter before every contact. Spotting required > turning one of the rotary switches on the transmitter, a cumbersome > process. Imagine doing that a couple thousand times in a weekend. At > some point, we came up with the idea to hook a foot switch up to do the > spotting, which made it much easier, and save a lot of wear and tear on > the rotary switch, not to mention the operator's wrist. > > In those days, 40-50 years ago, transceivers just didn't work well on > CW, so almost all CW operators used separate transmitters and receivers. > Some, like the Drake line, could transceive, but had the same problem on > CW. Transceivers didn't account for the BFO offset, and there was no RIT > or XIT. If you called another station in transceive mode, you would be > 700 Hz or so off frequency. Two transceivers pretty much couldn't work > each other at all. Sometime while I was inactive in the late 70's and > 80's, that problem was solved, and we no longer had to spot before every > contact. I think that solution had to wait for frequency synthesis, as > it otherwise would have required additional (expensive) crystals. Does > anyone know of a non-synthesized transceiver that didn't have the CW > offset problem? > > 73, > Scott K9MA > > >> On 1/21/2019 23:09, Wayne Burdick wrote: >> Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially those not experienced in pitch-matching. Here's a bit of history on where these features came from and how they work. > > > -- > Scott K9MA > > k9ma at sdellington.us > > > > ------------------------------ > > Message: 4 > Date: Tue, 22 Jan 2019 11:14:27 -0600 > From: K9MA > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: <5df178e8-5d66-fb3f-b731-d6a03656845f at sdellington.us> > Content-Type: text/plain; charset=utf-8; format=flowed > >> On 1/22/2019 10:59, David Gilbert wrote: >> >> Wayne, you forgot clicking on the DX Cluster spot. ;) > > Everyone zero beat was, I think, a bigger problem before skimmers. > Skimmer spots often seem to be quite a ways off frequency, probably > because their SDR receivers aren't all that stable. Some may be in > unheated buildings, too. > > 73, > > Scott K9MA > > -- > Scott K9MA > > k9ma at sdellington.us > > > > ------------------------------ > > Message: 5 > Date: Tue, 22 Jan 2019 11:13:25 -0700 (MST) > From: N8LP > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] K3 SWR Anomaly > Message-ID: <1548180805579-0.post at n2.nabble.com> > Content-Type: text/plain; charset=us-ascii > > This may be out of left field, but I seem to recall from the deep recesses of > my memory that there were some issues regarding an IF trap in the output of > the K3. It could be that one of the components in the trap has changed and > it now affects 40m. I don't know if newer K3s even have this circuit. Just > thinking out loud. > > Larry N8LP > > > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > > > ------------------------------ > > Message: 6 > Date: Tue, 22 Jan 2019 18:15:19 +0000 > From: "Dauer, Edward" > To: "elecraft at mailman.qth.net" > Subject: [Elecraft] K2, K1, W1, and other stuff for Sale > Message-ID: > Content-Type: text/plain; charset="utf-8" > > Selling principal home, no further need for seven HF transceivers. So the following are for sale. Terms for each are: No pay Pal, shipment on receipt of payment, seller packs, and buyer pays actual shipment cost from Denver, CONUS only and selling to licensed hams only. All items unless otherwise noted are in excellent cosmetic and electrical condition. Nonsmoking environment, never used out of doors or in mobile / portable operations. > > I have two heavy dimpled main tuning knobs for the K2s. Original cost $90 (as I remember it), option to buy for $50 each with purchase of a K2. Most interconnecting cables for K2s are also available at no additional cost. > > K2/10 (s/n 7637) with KNB2, KAF2, KAT2, KIO2, KBT2 (with battery), and optional heavy dimple knob. $900. > > K2/10 (s/n 7687) with KNB2, KSB2, KAF2, KPA100, and KAT100-1 in matching low profile enclosure, with tilt stand. $1,300. > > K2/10 (s/n 7739) and KAT100/KPA100 in EC-2 enclosure (?twins? configuration). K2 includes KNB2, KSB2, KAT2, KAF2, KIO2. $1,550. > > K1 (s/n 3440) 17 and 30 meters, with KAT1 internal ATU, KNB1 noise blanker, and KBT1 internal battery adapter. Includes extra cover and speaker (not used when cover with ATU is installed.) Tuned and aligned by Alan Wilcox. $350. > > Elecraft W1 Power Meter in acrylic case w/stand. $70 > > KD1JV Triband Transceiver and external ATU (Kit built, never tested.) $100 > > Pico Keyer condition unknown. Free to whomever buys the first K2 or K1. > > > Ted, KN1CBR > > > > Edward A. Dauer > Dean Emeritus and Professor Emeritus of Law > University of Denver > > > ------------------------------ > > Message: 7 > Date: Tue, 22 Jan 2019 12:54:36 -0600 (CST) > From: "Chris Cox, N0UK" > To: K9MA > Cc: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: > Content-Type: TEXT/PLAIN; charset=US-ASCII > > The transceive problem didn't seem to exist on any older non-synthesized > transceiver that I have used, including FT-101 series, TS-520/820 and > later, KW Electronics KW-2000E. these were all '70s era transceivers. > > -- > 73 Chris Cox, N0UK, G4JEC > chrisc at chris.org > > > > ------------------------------ > > Message: 8 > Date: Tue, 22 Jan 2019 12:51:50 -0600 (CST) > From: "Chris Cox, N0UK" > To: K9MA > Cc: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: > Content-Type: TEXT/PLAIN; charset=US-ASCII > > > > -- > 73 Chris Cox, N0UK, G4JEC > chrisc at chris.org > >> On Tue, 22 Jan 2019, K9MA wrote: >> >> transmitter before every contact. Spotting required turning one of the rotary >> switches on the transmitter, a cumbersome process. Imagine doing that a couple >> thousand times in a weekend. At some point, we came up with the idea to hook a >> foot switch up to do the spotting, which made it much easier, and save a lot >> of wear and tear on the rotary switch, not to mention the operator's wrist. >> >> In those days, 40-50 years ago, transceivers just didn't work well on CW, so >> almost all CW operators used separate transmitters and receivers. Some, like >> the Drake line, could transceive, but had the same problem on CW. Transceivers >> didn't account for the BFO offset, and there was no RIT or XIT. If you called >> another station in transceive mode, you would be 700 Hz or so off frequency. >> Two transceivers pretty much couldn't work each other at all. Sometime while I >> was inactive in the late 70's and 80's, that problem was solved, and we no >> longer had to spot before every contact. I think that solution had to wait for >> frequency synthesis, as it otherwise would have required additional >> (expensive) crystals. Does anyone know of a non-synthesized transceiver that >> didn't have the CW offset problem? >> >> 73, >> Scott K9MA >> >> >>> On 1/21/2019 23:09, Wayne Burdick wrote: >>> Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- >>> are very useful tools for CW operators, especially those not experienced in >>> pitch-matching. Here's a bit of history on where these features came from >>> and how they work. >> >> >> -- >> Scott K9MA >> >> k9ma at sdellington.us >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to chrisc at chris.org >> > > > ------------------------------ > > Message: 9 > Date: Tue, 22 Jan 2019 14:27:25 -0500 > From: Jim Clymer > To: elecraft at mailman.qth.net > Subject: [Elecraft] Zero Beat / CWT / Auto Spot > Message-ID: > > Content-Type: text/plain; charset="UTF-8" > >> >> Anyone who has ever had the privilege of being on the receiving end of a >> huge CW pileup has a new appreciation for the tone deaf and those who never >> learned to use CWT. (And the savvy pileup busters who > > intentionally avoid zero beat.) Of course there is always the W5 - dead >> zero beat - who is so loud you don't hear anyone else no matter how far off >> frequency! > > Jim - WS6X > >> > Date: Mon, 21 Jan 2019 21:09:44 -0800 >> From: Wayne Burdick >> To: Elecraft Reflector >> Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> >> CW Spotting History >> Tuning Aids: Filtering (APF), PLL (NE567), and Spectral (CWT) >> How to Use Auto-Spot >> >> > > > ------------------------------ > > Message: 10 > Date: Tue, 22 Jan 2019 14:14:00 -0600 > From: Bob McGraw K4TAX > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: > Content-Type: text/plain; charset=utf-8; format=flowed > > Another trick which works well.?? Tune to a WWV frequency in CW mode.? > Press SPOT and the radio will jump on the exact carrier frequency.?? The > SPOT function can pull on to the WWV frequency as far away as about 100 > Hz.? Once the radio has? resolved SPOT, the readout / display is the > frequency of WWV +/- the error in Hz. Thus the readout of 9.999.992 is > indicating being 8 Hz low. > > From a cold start, FP being 19?C, I find? -8 Hz error on 10 MHz WWV.? > After about 15 minutes the FP is 25?C and the error is -1 Hz.? I've > tweaked the REF CAL such that after 1/2 hr. in receive tuning to WWV > from both higher and lower will produce a reading of 10.000.000.?? Will > all stations pse QNZ? QNN. > > 73 > > Bob, K4TAX > > > > > ------------------------------ > > Message: 11 > Date: Tue, 22 Jan 2019 15:19:54 -0500 > From: Don Wilhelm > To: "Chris Cox, N0UK" > Cc: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: <48f3e257-a765-e853-62c6-d20e061093af at embarqmail.com> > Content-Type: text/plain; charset=utf-8; format=flowed > > In that era, SSB capable transceivers often offset the BFO by using a > different BFO crystal for CW transmit or CW receive - but that technique > slaved you to one sideband and one CW pitch. > There were other ways of doing the offset as well, but it was usually > done by shifting the BFO frequency. > > 73, > Don W3FPR > >> On 1/22/2019 1:54 PM, Chris Cox, N0UK wrote: >> The transceive problem didn't seem to exist on any older non-synthesized >> transceiver that I have used, including FT-101 series, TS-520/820 and >> later, KW Electronics KW-2000E. these were all '70s era transceivers. >> >> -- >> 73 Chris Cox, N0UK, G4JEC >> chrisc at chris.org >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donwilh at embarqmail.com >> > > > ------------------------------ > > Message: 12 > Date: Tue, 22 Jan 2019 12:26:40 -0800 > From: rv6amark > To: K9MA , elecraft at mailman.qth.net > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: > Content-Type: text/plain; charset=utf-8 > > Re:? "Does anyone know of a non-synthesized transceiver that didn't have the CW offset problem?" > > My TenTec 540 doesn't have that problem, but my much older TenTec PM-3A does.? If my memory is correct, the Heathkit HW8 has the problem, but they fixed it in the HW9 with a small capacitor that switches in and out for RX/TX to shift the VFO. > > There are others. > > Mark > KE6BB > > > > Sent via the Samsung Galaxy Tab E, an AT&T 4G LTE tablet > -------- Original message --------From: K9MA Date: 1/22/19 9:11 AM (GMT-08:00) To: elecraft at mailman.qth.net Subject: Re: [Elecraft] Auto-spot, tuning aids, > ? and the arcane history of CW pitch-matching > Back in my college days at W9YT, we had a Drake line, separate > transmitter and receivers. When searching and pouncing in a contest, you > had to spot the transmitter before every contact. Spotting required > turning one of the rotary switches on the transmitter, a cumbersome > process. Imagine doing that a couple thousand times in a weekend. At > some point, we came up with the idea to hook a foot switch up to do the > spotting, which made it much easier, and save a lot of wear and tear on > the rotary switch, not to mention the operator's wrist. > > In those days, 40-50 years ago, transceivers just didn't work well on > CW, so almost all CW operators used separate transmitters and receivers. > Some, like the Drake line, could transceive, but had the same problem on > CW. Transceivers didn't account for the BFO offset, and there was no RIT > or XIT. If you called another station in transceive mode, you would be > 700 Hz or so off frequency. Two transceivers pretty much couldn't work > each other at all. Sometime while I was inactive in the late 70's and > 80's, that problem was solved, and we no longer had to spot before every > contact. I think that solution had to wait for frequency synthesis, as > it otherwise would have required additional (expensive) crystals. Does > anyone know of a non-synthesized transceiver that didn't have the CW > offset problem? > > 73, > Scott K9MA > > >> On 1/21/2019 23:09, Wayne Burdick wrote: >> Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially those not experienced in pitch-matching. Here's a bit of history on where these features came from and how they work. > > > -- > Scott? K9MA > > k9ma at sdellington.us > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rv6amark at yahoo.com > > ------------------------------ > > Message: 13 > Date: Tue, 22 Jan 2019 15:27:03 -0500 > From: Howard Hoyt > To: Mel Snyder , Wayne Burdick > > Cc: Elecraft Reflector , > "KX3 at yahoogroups.com" > Subject: Re: [Elecraft] [KX3] Auto-spot, tuning aids, and the arcane > history of CW pitch-matching > Message-ID: <90b12bb3-b6c7-5d34-e454-3e842f7e3b2e at mebtel.net> > Content-Type: text/plain; charset=utf-8; format=flowed > > Hi Mel, > > I experienced the same reading Wayne's highly informative post!! > > I started off in 1970 with a homebrew 6L6/807 xtal xmtr with maybe 12 > xtals and a Hallicrafters S-38 which gave me hundreds of mesmerizing > hours in my parents basement.? That rig gave me my first huge shock as > well, so it is indeed memorable.? What idiot thought it was a good idea > to put the 500 V B+ connection on an unguarded terminal strip on the > back panel?? Wait, that was me... > > Still, I thought I was in heaven until my high school club bought a > Drake R-4B/T-4XB which blew me away and I ended up owning a pair in the > early 1980s and still love the Drake twins to this day. However they > have been gathering dust since I got my K3, which is the best rig > overall I have used to date, and love my KX3 in the car and on travel. > > Although it works well, I don't use Auto Spot is because it scrambles my > feeble brain as to where I am tuned; I am just not used to a rig > changing frequency without me intentionally doing it.? Perhaps this is a > mental artifact of heavy contesting, where I am loathe to leave a good > RUN frequency, indeed I often lock VFO A so I don't accidentally bump > the VFO A knob. > > Cheers & 73, > Howie / WA4PSC > > >> On 1/22/2019 1:51 PM, Mel Snyder ct_digital_photog at yahoo.com [KX3] wrote: >> >> Wow, this is *great,* Wayne! Thanks. I am away from home, but will be >> interested to test the auto-spot when I get home. >> >> >> A wonderful trip down memory lane. While you were swapping crystals >> with your HW-16, I was a few years ahead of you as KN3AFW, swapping >> them first into my home-brew 6AG7-6L6 rig, and then, a borrowed Eico 720. >> >> I still own a lovely Johnson Ranger II, and an SB-301 Heathkit >> receiver with the original 500Hz filter, the combination of which >> require your explained tuning the VFO to the note of the received >> signal. But both are on my list to sell, along with my HW-9 and >> FT-707, inasmuch with my KX3 for good band conditions and my >> inherited/restored TS-940S when they?re poor, they are all surplus >> space-consumers. >> >> Every time I turn on my KX3, I am in awe of how far ham radio has >> progressed in the past 61 years since I was licensed. Like taking a >> cell call on my Apple Watch, it?s beyond anything I dreamed of as a >> kid back then. So glad I stopped by the Elecraft exhibit at the 2014 >> Hartford ARRL convention, and was taken by the enthusiasm of KX3 users >> that gathered there - and decided to join the cult. >> >> Mel, W3PYF >> >> >> >>> On Jan 22, 2019, at 12:09 AM, Wayne Burdick n6kr at elecraft.com >>> [KX3] >> > wrote: >>> >>> Elecraft's auto-spot and CWT features -- available on the >>> K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially >>> those not experienced in pitch-matching. Here's a bit of history on >>> where these features came from and how they work. >>> >>> CW Spotting History >>> >>> When a station finishes a CQ in CW mode, the operator faces the >>> challenge of copying someone who's calling back. Callers may be weak >>> or obscured by QRM; the op can usually deal with both problems by >>> narrowing the filter passband. However, callers may also be off >>> frequency. A calling station may be using a wide filter passband >>> themselves, not attempting to carefully match their VFO frequency to >>> that of the CQing station. The result may be no QSO, even when >>> propagation is excellent. >>> >>> In the Days of Yore, a frequency offset between stations didn't >>> always matter. Sometimes both stations used crystal-controlled >>> transmitters, so operators had to patient tune around after calling CQ. >>> >>> As a 14-year-old novice I embraced this operating style for a year or >>> so, armed with a dozen or so crusty FT-243 crystals for my Heath >>> HW-16. I nearly wore out the socket swapping them in and out. After >>> calling CQ, it was not unusual to find a caller 30 or more kHz away! >>> (Away from "where" was a poorly answered question, as my >>> Hallicrafters receiver dial wasn't exactly digital.) >>> >>> Fortunately I soon acquired an outboard VFO, a life-changing addition >>> to my station. Jealous friends doubled up on their paper routes to >>> pay for their own. Girls suddenly paid more attention to me. >>> >>> These days virtually everyone has a VFO, along with the expectation >>> that they won't have to tune theirs very far, if at all, to tune you >>> in. Not only that, they're stable and well calibrated, not like the >>> beasts we had to skillfully tame. Progress! >>> >>> Manual Spotting (SPOT switch) >>> >>> Once I had a VFO I quickly learned to do *manual* pitch matching. >>> Older rigs did't provide a way to do that explicitly, so you'd >>> improvise. Basically, you had to coerce a very weak signal out of >>> your own transmitter, say by turning on only the driver, then tune >>> the transmit VFO until you could hear your signal on your own >>> receiver -- superimposed on the calling station, at the same pitch. >>> This is what we call spotting. >>> >>> Of course spotting is a lot more convenient these days, as many rigs >>> include a SPOT switch. This function is easy for a modern transceiver >>> designer to add, because the radio's firmware is quite capable of >>> turning on only the CW sidetone without transmitting. >>> >>> That is the purpose of the SPOT switch on all Elecraft transceivers. >>> Tap SPOT, and you'll hear your sidetone pitch. Most people can do a >>> good job of adjusting the VFO such that the CQing station's pitch >>> matches that of the SPOT tone. This ensures that when you call them, >>> you'll be close to their own frequency. >>> >>> Tuning Aids: Filtering (APF), PLL (NE567), and Spectral (CWT) >>> >>> Since not everyone has an inherent musical ear, various >>> hardware-enhanced means of tuning in CW signals have been developed. >>> >>> The simplest method is to just narrow your receiver passband so much >>> that, if you can hear a station calling CQ at all, you're guaranteed >>> to be "right on top of him." This assumes that your transceiver >>> enforces alignment between its transmit and receive pitch...true of >>> all Elecraft gear. >>> >>> Narrow filtering has gone through decades of evolution. Some filters >>> were based on op-amps (active filters), while others were based on LC >>> filtering, conscripting humongous toroidal cores scavenged from telco >>> equipment. I acquired my stash of these from a haphazard mound of old >>> switching racks, decaying in an abandoned aircraft hanger on the >>> Bermuda U.S. Navy base. (That irresistible junk pile was also a >>> mother load of TO5 transistors, multi-pound electrolytic capacitors, >>> and tetanus, but that's another story.) Typically the toroids were 88 >>> millihenries -- a huge value for a high-Q inductor, permitting >>> resonance in the low audio range. >>> >>> Later, such filters migrated to digital signal processing, in the >>> form of switched-capacitor ICs or DSPs. You can still buy these >>> switched-capacitor chips, like the MF10, from various sources. It's >>> instructive to roll your own tunable filter, just for fun. >>> >>> Whether passive or active, the goal of filtering is typically to >>> achieve a narrow passband, say 250 Hz or less. With DSP, nearly >>> perfect filters with "brick wall" passbands can be created. But these >>> have the disadvantage of ringing like a bell when pinged by a CW >>> signal or noise, making copy difficult. >>> >>> One solution incorporated into the K-line and KX-line is the Audio >>> Peaking Filter (APF), which provides a 30-Hz bandwidth at -3 dB, but >>> broad skirts, preventing ringing from occurring. As our customers >>> will attest, APF works like magic on weak signals obscured by noise. >>> >>> Another forerunner to DSP techniques was the audio phase-locked-loop, >>> using inexpensive ICs like the legendary LM567. When locked on a >>> signal that matched its center frequency, the circuit would turn on >>> an LED, alerting the operator that the VFO was now properly tuned. >>> >>> With the DSPs in our K-line and KX-line radios, we can provide a much >>> more powerful tool: CWT, or "CW Tuning Aid." When enabled, CWT turns >>> the upper portion of the rig's S-meter into something of a mini >>> spectrum analyzer. The pitch of the strongest signal in the passband >>> is analyzed by the DSP, then represented as a single segment of the >>> bar graph. For CWT-enhanced manual spotting, the operator simply >>> tunes the VFO slowly until the center CWT segment is flashing along >>> with the keyed signal. >>> >>> Manual tuning with CWT can also be used in FSK-D and PSK-D modes as >>> described in the owner's manual.. >>> >>> Closing the Loop: Auto-Spotting (SPOT + CWT) >>> >>> The Elecraft K3/K3S/KX2/KX3 take CW tuning another step forward by >>> providing a way to *automatically* retune the VFO frequency to match >>> that of a received signal. How does this work? >>> >>> When CWT is turned on, firmware treats the SPOT switch as AUTO-SPOT. >>> The DSP analyzes the incoming signal, and with a bit of processing, >>> determines its exact audio pitch. From there all that's needed is a >>> bit of math to offset the VFO to match this pitch to the CW sidetone. >>> >>> There's another subtlety, though. Since a CW signal is generally >>> being keyed on and off, the CWT algorithm has to ensure that it >>> doesn't "take off," chasing a signal that's not there. To avoid this, >>> we keep track of the energy in the passband, and slew the VFO >>> incrementally over an average of about 0.5 second, moving only when >>> the target signal is present. >>> >>> How to Use Auto-Spot >>> >>> I encourage you to give the auto-spot feature a try. It's best to >>> start with a fairly narrow passband, say 400-600 Hz; narrower if >>> there's a lot of QRM. Find a signal, turn on CWT, then tap SPOT to >>> tune it in. A second tap of SPOT may get even closer, especially if >>> there's a lot of band noise. >>> >>> Auto-spot can also be used in Elecraft's PSK-D mode, i.e. for >>> PSK31/PSK63. As with CW mode, just turn on CWT, tune in a prospective >>> signal, and tap SPOT. Since PSK auto-decoding requires very accurate >>> tuning, it's best to set the filter bandwidth to 50 Hz, then let >>> auto-spot dial things in down to the last 2 or 3 Hz. If you have text >>> decode turned on, you should start seeing text characters scroll by >>> after auto-tuning has completed. Tapping a second time or fine-tuning >>> the VFO a bit in 1 Hz steps may improve copy. >>> >>> 73, >>> Wayne >>> N6KR >>> >> >> __._,_.___ >> ------------------------------------------------------------------------ >> Posted by: Mel Snyder >> ------------------------------------------------------------------------ >> Reply via web post >> >> ? Reply to sender >> >> ? Reply to group >> >> ? Start a New Topic >> >> ? Messages in this topic >> >> (2) >> >> ------------------------------------------------------------------------ >> Have you tried the highest rated email app? >> With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated >> email app on the market. What are you waiting for? 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Terms >> of Use >> >> SPONSORED LINKS >> . >> >> __,_._,___ > > > ------------------------------ > > Message: 14 > Date: Tue, 22 Jan 2019 13:45:13 -0700 > From: "Dave New, N8SBE" > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: > <20190122134513.1fa1e31b6b6b329ecc65be958babcc1f.2b096db9da.wbe at email09.godaddy.com> > > Content-Type: text/plain; charset="utf-8" > > When I upgraded from my K3 to a K3s, I took the opportunity to order a > 10 MHz Ref In option. > > I finally got around to hooking it up to a Leo Bodnar GPS receiver I > picked up at Dayton a year ago, and now the K3s is rock solid spot on > frequency. > > Don't know how i did without it all these years... > > 73, > > -- Dave, N8SBE > > -------- Original Message -------- > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > From: Bob McGraw K4TAX > Date: Tue, January 22, 2019 3:14 pm > To: elecraft at mailman.qth.net > > Another trick which works well. Tune to a WWV frequency in CW mode. > Press SPOT and the radio will jump on the exact carrier frequency. The > SPOT function can pull on to the WWV frequency as far away as about 100 > Hz. Once the radio has resolved SPOT, the readout / display is the > frequency of WWV +/- the error in Hz. Thus the readout of 9.999.992 is > indicating being 8 Hz low. > > From a cold start, FP being 19?C, I find -8 Hz error on 10 MHz WWV. > After about 15 minutes the FP is 25?C and the error is -1 Hz. I've > tweaked the REF CAL such that after 1/2 hr. in receive tuning to WWV > from both higher and lower will produce a reading of 10.000.000. Will > all stations pse QNZ QNN. > > 73 > > Bob, K4TAX > > > > > > ------------------------------ > > Message: 15 > Date: Tue, 22 Jan 2019 13:47:04 -0700 > From: "Dave New, N8SBE" > To: "Elecraft Reflector" > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: > <20190122134704.1fa1e31b6b6b329ecc65be958babcc1f.b1b5d245eb.wbe at email09.godaddy.com> > > Content-Type: text/plain; charset="utf-8" > > I'm a great fan of using the auto-spot feature, and love to show it off > to all shack visitors, as an example of yet another reason they need to > upgrade to Elecraft, from whatever boat anchor they are still using... > > 73, > > -- Dave, N8SBE > > > ------------------------------ > > Message: 16 > Date: Tue, 22 Jan 2019 12:57:16 -0800 > From: Wayne Burdick > To: Elecraft > Cc: KX3 > Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop > antenna? > Message-ID: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C at elecraft.com> > Content-Type: text/plain; charset=utf-8 > > I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. > > So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. > > The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. > > Any other antenna suggestions? > > Wayne > N6KR > > > > ---- > elecraft.com > > ------------------------------ > > Message: 17 > Date: Tue, 22 Jan 2019 20:57:26 +0000 > From: Andy Durbin > To: "elecraft at mailman.qth.net" > Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of > CW pitch-matching > Message-ID: > > > Content-Type: text/plain; charset="iso-8859-1" > > "Find a signal, turn on CWT, then tap SPOT to tune it in. A second tap of SPOT may get even closer, especially if there's a lot of band noise." > > and > > "I'm a great fan of using the auto-spot feature, and love to show it off to all shack visitors, as an example of yet another reason they need to upgrade to Elecraft," > > I must be missing something. How is this 2 step activated spot feature better than a single press of Kenwood's CWT? I often use CWT on my TS-590S but almost always with a spit or XIT offset (I didn't know that was a secret). > > Andy, k3wyc > > > ------------------------------ > > Message: 18 > Date: Tue, 22 Jan 2019 14:01:33 -0700 > From: Wes > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: <619ac274-ad1e-282d-8b1e-0b37685b0e74 at triconet.org> > Content-Type: text/plain; charset=utf-8; format=flowed > > Are you serious? > > Wes? N7WS > >> On 1/22/2019 1:45 PM, Dave New, N8SBE wrote: >> Don't know how i did without it all these years... >> >> 73, >> >> -- Dave, N8SBE >> > > > > ------------------------------ > > Message: 19 > Date: Tue, 22 Jan 2019 14:01:52 -0700 (MST) > From: ab2tc > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: <1548190912091-0.post at n2.nabble.com> > Content-Type: text/plain; charset=us-ascii > > Hi all, > > Agreed; the problem can easily be solved in analog radios without frequency > synthesis by offsetting the BFO frequency by those 700Hz or so in transmit. > In down conversion machines with a single IF in the 8-9MHz range that could > easily be done by pulling the BFO crystal. The Drake TR4 undoubtedly worked > this way. I bought my first transceiver in 1969 (I think), a Yaesu FT-200, I > think it was called in the US. In Europe it was sold as Sommerkamp FT-250. > As the Drake TR4 it was down conversion with a single 9MHz IF and worked CW > by pulling the BFO crystal into the passband of the 9MHz crystal filter on > transmit. > > Another technical solution, which was used in the Collins KWM2 (and probably > KWM1) was to keep the balanced (de)modulator balanced and inject an audio > tone into it on transmit. Clearly the spectral purity of the CW signal would > be less than ideal in this case, but I am not sure if FCC type approval was > needed in those days. Nor am I sure what the the FCC spec for "inband" (read > close in) spurs would be. > > AB2TC - Knut > > > n0uk wrote >> The transceive problem didn't seem to exist on any older non-synthesized >> transceiver that I have used, including FT-101 series, TS-520/820 and >> later, KW Electronics KW-2000E. these were all '70s era transceivers. >> >> >> >> -- >> 73 Chris Cox, N0UK, G4JEC > >> chrisc@ > >> >> _ >> > > > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > > > ------------------------------ > > Message: 20 > Date: Tue, 22 Jan 2019 14:32:47 -0700 > From: Mark Goldberg > To: Wayne Burdick > Cc: Elecraft , KX3 > Subject: Re: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack > loop antenna? > Message-ID: > > Content-Type: text/plain; charset="UTF-8" > > I would expect any high Q antenna like a loop would be detuned by any > movement or any metal you pass by. One more reason to support automatic > mobile screwdriver / mag loop antenna tuning on the KX series. > A flag on a backpack would be more or less ignored. Just put a flag on the > top of the AX1. Counterpoise is an issue though. Maybe a short one down > your leg? > > Now, if you dressed as a homeless or otherwise distressed person, lots of > weird things are possible, tinfoil hat with a big flag, dragged wire > disguised as one of those fake animals on a leash, etc. The weirder, the > more people will ignore you. > > Hopefully taken in the spirit of which it is posted. > > 73, > > Mark > W7MLG > > > On Tue, Jan 22, 2019 at 1:57 PM Wayne Burdick n6kr at elecraft.com [KX3] < > KX3-noreply at yahoogroups.com> wrote: > >> >> >> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 >> antenna and a dragged counterpoise. In wide open spaces it?s a blast. But >> urban settings with dogs, wire-eating cacti and overzealous Neighborhood >> Watchers can distract from one?s radio experience. >> >> So, just for grins, I?d like to try something completely incognerdo: no >> visible antenna. A small remotely tuned loop (say 12? diameter) would seem >> to be the best choice, as it would fit entirely inside a small backpack. It >> could have modest efficiency while not requiring a counterpoise wire. >> Rigid 1? copper pipe formed in a square would be convenient to deploy. >> >> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, >> of course. OTOH, we?re talking about HF. A cellphone by your ear is >> probably worse. >> >> Any other antenna suggestions? >> >> Wayne >> N6KR >> >> >> >> ---- >> elecraft.com >> >> __._,_.___ >> ------------------------------ >> Posted by: Wayne Burdick >> ------------------------------ >> Reply via web post >> >> ? Reply to sender >> >> ? Reply to group >> >> ? Start a New Topic >> >> ? Messages in this topic >> >> (1) >> ------------------------------ >> Have you tried the highest rated email app? >> With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email >> app on the market. What are you waiting for? Now you can access all your >> inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email >> again with 1000GB of free cloud storage. >> ------------------------------ >> Visit Your Group >> >> >> >> [image: Yahoo! Groups] >> >> ? Privacy ? >> Unsubscribe ? Terms >> of Use >> >> SPONSORED LINKS >> . >> >> __,_._,___ >> > > > ------------------------------ > > Message: 21 > Date: Tue, 22 Jan 2019 13:38:35 -0800 > From: Steve Sergeant > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop > antenna? > Message-ID: <63fb5351-46b5-0d73-e53d-ba852f6543b7 at effable.com> > Content-Type: text/plain; charset=utf-8 > >> On 1/22/19 12:57 PM, Wayne Burdick wrote: >> A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. > > [Deletia] > >> Any other antenna suggestions? > > I tried a 52ft 26ga wire J-pole/Zep on the line of a 5ft parafoil kite, > with 50ft of kite line above the antenna, and another 50' of RG-174 > between the antenna and the radio. > > I'll grant that this is not as invisible as your idea. But I felt > reasonably inconspicuous working SSB with cell-phone type earbuds > (w/mic), and the KX2 in an open waist-pack, out in an open field of a > large city park. People just thought I was on a phone call while flying > the kite. It helped that there were several other kite-fliers in the > park that day. > > It was not a particularly good day for propagation, but I did work Las > Vegas and Spokane from Silicon Valley with under 10W on 20m. > > > > > ------------------------------ > > Message: 22 > Date: Tue, 22 Jan 2019 16:40:04 -0500 > From: Michael Blake > To: Mark Goldberg > Cc: Elecraft Reflector , KX3 > > Subject: Re: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack > loop antenna? > Message-ID: <53CCB8BD-BFF8-46CC-83AC-0F0A12D89C88 at mac.com> > Content-Type: text/plain; charset=us-ascii > > Mark (W7MLG), It is scary how perfectly sane and normal your suggestions sound to me :) > > Very 73 - Mike - K9JRI > > > > > > > >> On Jan 22, 2019, at 4:32 PM, Mark Goldberg wrote: >> >> I would expect any high Q antenna like a loop would be detuned by any >> movement or any metal you pass by. One more reason to support automatic >> mobile screwdriver / mag loop antenna tuning on the KX series. >> A flag on a backpack would be more or less ignored. Just put a flag on the >> top of the AX1. Counterpoise is an issue though. Maybe a short one down >> your leg? >> >> Now, if you dressed as a homeless or otherwise distressed person, lots of >> weird things are possible, tinfoil hat with a big flag, dragged wire >> disguised as one of those fake animals on a leash, etc. The weirder, the >> more people will ignore you. >> >> Hopefully taken in the spirit of which it is posted. >> >> 73, >> >> Mark >> W7MLG >> >> >> On Tue, Jan 22, 2019 at 1:57 PM Wayne Burdick n6kr at elecraft.com [KX3] < >> KX3-noreply at yahoogroups.com> wrote: >> > > > > ------------------------------ > > Message: 23 > Date: Tue, 22 Jan 2019 15:41:14 -0600 > From: K9MA > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: <089118fa-b031-7b6d-b2b6-c31ff6dda385 at sdellington.us> > Content-Type: text/plain; charset=utf-8; format=flowed > >> On 1/22/2019 14:14, Bob McGraw K4TAX wrote: >> Another trick which works well.?? Tune to a WWV frequency in CW mode. >> Press SPOT and the radio will jump on the exact carrier frequency. > > You can do the same thing, of course, by listening to the beat between > the sidetone and the carrier. I was able to get 3 Hz closer that way, > within the 1 Hz tuning resolution. 3 Hz is close enough, though. > > When listening for the beats, you have to match the volume of the > sidetone and carrier, or you won't hear them. You don't need a musical > ear, just a functioning one. > > 73, > > Scott K9MA > > -- > Scott K9MA > > k9ma at sdellington.us > > > > ------------------------------ > > _______________________________________________ > Elecraft mailing list > Post to: Elecraft at mailman.qth.net > http://mailman.qth.net/mailman/listinfo/elecraft > You must be a subscriber to post. > Elecraft web page: http://www.elecraft.com > > End of Elecraft Digest, Vol 177, Issue 36 > ***************************************** > From n7wy at rocketmail.com Tue Jan 22 18:26:41 2019 From: n7wy at rocketmail.com (Robert Rennard) Date: Tue, 22 Jan 2019 17:26:41 -0600 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching Message-ID: For N1MM, use the up and down arrow keys to get close in S&P operation and then press F11 to zero beat - F11 Z B,{CATA1ASC SWT42;} If it is a dense pile, a little XIT offset is a big help. 73, Bob R From frantz at pwpconsult.com Tue Jan 22 20:06:17 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Tue, 22 Jan 2019 17:06:17 -0800 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: <20190122232810.3E271149B3C8@mailman.qth.net> Message-ID: I must admit, most of my CW tuning is done with the P3/SVGA and getting the pitch "right" in my earphones. (With RTTY, I can get very close to the correct pitch by ear. Then I used the crossed loop tuning aid for the final few Hz.) 73 Bill AE6JV --------------------------------------------------------------------------- Bill Frantz | "I wish there was a knob on the TV to turn up the 408-356-8506 | intelligence. There's a knob called "brightness", but www.pwpconsult.com | it doesn't work. -- Gallagher From kevinr at coho.net Tue Jan 22 20:17:03 2019 From: kevinr at coho.net (kevinr) Date: Tue, 22 Jan 2019 17:17:03 -0800 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> Message-ID: <9db6ea37-d5a6-ffdf-33ce-59a4795bfee7@coho.net> There may be other options.? A serpentine pattern fed at the center could give you enough length for a 10 m or larger dipole. I've seen serpentine F antennas on printed circuit boards.? I've also seen spiral patterns used so I know they work to some extent. If a dipole cut for 14 MHz is ~ 400 inches long it would take 11 up and down segments of 36" each to stuff it inside your pack. I'm sure the serpentine factor will change the length needed but with a bit of tweaking this could work. Or feed it at one end for a 40 meter monopole (a counterpoise could be woven into the pack). ?? 73 & GL, ?????? Kevin.? KD5ONS - On 1/22/19 12:57 PM, Wayne Burdick wrote: > I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. > > So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. > > The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. > > Any other antenna suggestions? > > Wayne > N6KR > > > > ---- > elecraft.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to kevinr at coho.net From joanpatrie at me.com Tue Jan 22 20:19:52 2019 From: joanpatrie at me.com (Joan) Date: Tue, 22 Jan 2019 17:19:52 -0800 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching Message-ID: <2D8BAE14-EACC-4C2B-B053-1379BDF9B4DB@me.com> Thanks, Wayne! This is one of the best entries into these threads I?ve ever read. And, yes, I've experimented with Auto Spot in CWT mode. And: > ?the Audio Peaking Filter (APF), ?provides a 30-Hz bandwidth at -3 dB, but broad skirts, preventing ringing from occurring. As our customers will attest, APF works like magic on weak signals obscured by noise?? To which I also attest! ^_^ And, the VFO and IF passband tracking exactly on the user setable CW sidetone (A 440, in my case) is one of the main things which made me fall in love with Elecraft. 72 de KX2CW .. ~Joan Darmok and Jalad at Tanagra, said Piglet. Shaka, when the walls fell, said Pooh. > On Jan 21, 2019, at 21:09, Wayne Burdick wrote: > > Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially those not experienced in pitch-matching. Here's a bit of history on where these features came from and how they work. > > > CW Spotting History > > When a station finishes a CQ in CW mode, the operator faces the challenge of copying someone who's calling back. Callers may be weak or obscured by QRM; the op can usually deal with both problems by narrowing the filter passband. However, callers may also be off frequency. A calling station may be using a wide filter passband themselves, not attempting to carefully match their VFO frequency to that of the CQing station. The result may be no QSO, even when propagation is excellent. > > In the Days of Yore, a frequency offset between stations didn't always matter. Sometimes both stations used crystal-controlled transmitters, so operators had to patient tune around after calling CQ. > > As a 14-year-old novice I embraced this operating style for a year or so, armed with a dozen or so crusty FT-243 crystals for my Heath HW-16. I nearly wore out the socket swapping them in and out. After calling CQ, it was not unusual to find a caller 30 or more kHz away! (Away from "where" was a poorly answered question, as my Hallicrafters receiver dial wasn't exactly digital.) > > Fortunately I soon acquired an outboard VFO, a life-changing addition to my station. Jealous friends doubled up on their paper routes to pay for their own. Girls suddenly paid more attention to me. > > These days virtually everyone has a VFO, along with the expectation that they won't have to tune theirs very far, if at all, to tune you in. Not only that, they're stable and well calibrated, not like the beasts we had to skillfully tame. Progress! > > > Manual Spotting (SPOT switch) > > Once I had a VFO I quickly learned to do *manual* pitch matching. Older rigs did't provide a way to do that explicitly, so you'd improvise. Basically, you had to coerce a very weak signal out of your own transmitter, say by turning on only the driver, then tune the transmit VFO until you could hear your signal on your own receiver -- superimposed on the calling station, at the same pitch. This is what we call spotting. > > Of course spotting is a lot more convenient these days, as many rigs include a SPOT switch. This function is easy for a modern transceiver designer to add, because the radio's firmware is quite capable of turning on only the CW sidetone without transmitting. > > That is the purpose of the SPOT switch on all Elecraft transceivers. Tap SPOT, and you'll hear your sidetone pitch. Most people can do a good job of adjusting the VFO such that the CQing station's pitch matches that of the SPOT tone. This ensures that when you call them, you'll be close to their own frequency. > > > Tuning Aids: Filtering (APF), PLL (NE567), and Spectral (CWT) > > Since not everyone has an inherent musical ear, various hardware-enhanced means of tuning in CW signals have been developed. > > The simplest method is to just narrow your receiver passband so much that, if you can hear a station calling CQ at all, you're guaranteed to be "right on top of him." This assumes that your transceiver enforces alignment between its transmit and receive pitch...true of all Elecraft gear. > > Narrow filtering has gone through decades of evolution. Some filters were based on op-amps (active filters), while others were based on LC filtering, conscripting humongous toroidal cores scavenged from telco equipment. I acquired my stash of these from a haphazard mound of old switching racks, decaying in an abandoned aircraft hanger on the Bermuda U.S. Navy base. (That irresistible junk pile was also a mother load of TO5 transistors, multi-pound electrolytic capacitors, and tetanus, but that's another story.) Typically the toroids were 88 millihenries -- a huge value for a high-Q inductor, permitting resonance in the low audio range. > > Later, such filters migrated to digital signal processing, in the form of switched-capacitor ICs or DSPs. You can still buy these switched-capacitor chips, like the MF10, from various sources. It's instructive to roll your own tunable filter, just for fun. > > Whether passive or active, the goal of filtering is typically to achieve a narrow passband, say 250 Hz or less. With DSP, nearly perfect filters with "brick wall" passbands can be created. But these have the disadvantage of ringing like a bell when pinged by a CW signal or noise, making copy difficult. > > One solution incorporated into the K-line and KX-line is the Audio Peaking Filter (APF), which provides a 30-Hz bandwidth at -3 dB, but broad skirts, preventing ringing from occurring. As our customers will attest, APF works like magic on weak signals obscured by noise. > > Another forerunner to DSP techniques was the audio phase-locked-loop, using inexpensive ICs like the legendary LM567. When locked on a signal that matched its center frequency, the circuit would turn on an LED, alerting the operator that the VFO was now properly tuned. > > With the DSPs in our K-line and KX-line radios, we can provide a much more powerful tool: CWT, or "CW Tuning Aid." When enabled, CWT turns the upper portion of the rig's S-meter into something of a mini spectrum analyzer. The pitch of the strongest signal in the passband is analyzed by the DSP, then represented as a single segment of the bar graph. For CWT-enhanced manual spotting, the operator simply tunes the VFO slowly until the center CWT segment is flashing along with the keyed signal. > > Manual tuning with CWT can also be used in FSK-D and PSK-D modes as described in the owner's manual. > > > Closing the Loop: Auto-Spotting (SPOT + CWT) > > The Elecraft K3/K3S/KX2/KX3 take CW tuning another step forward by providing a way to *automatically* retune the VFO frequency to match that of a received signal. How does this work? > > When CWT is turned on, firmware treats the SPOT switch as AUTO-SPOT. The DSP analyzes the incoming signal, and with a bit of processing, determines its exact audio pitch. From there all that's needed is a bit of math to offset the VFO to match this pitch to the CW sidetone. > > There's another subtlety, though. Since a CW signal is generally being keyed on and off, the CWT algorithm has to ensure that it doesn't "take off," chasing a signal that's not there. To avoid this, we keep track of the energy in the passband, and slew the VFO incrementally over an average of about 0.5 second, moving only when the target signal is present. > > > How to Use Auto-Spot > > I encourage you to give the auto-spot feature a try. It's best to start with a fairly narrow passband, say 400-600 Hz; narrower if there's a lot of QRM. Find a signal, turn on CWT, then tap SPOT to tune it in. A second tap of SPOT may get even closer, especially if there's a lot of band noise. > > Auto-spot can also be used in Elecraft's PSK-D mode, i.e. for PSK31/PSK63. As with CW mode, just turn on CWT, tune in a prospective signal, and tap SPOT. Since PSK auto-decoding requires very accurate tuning, it's best to set the filter bandwidth to 50 Hz, then let auto-spot dial things in down to the last 2 or 3 Hz. If you have text decode turned on, you should start seeing text characters scroll by after auto-tuning has completed. Tapping a second time or fine-tuning the VFO a bit in 1 Hz steps may improve copy. > > 73, > Wayne > N6KR > > > > > From mike.chowning at mgccc.org Tue Jan 22 20:51:01 2019 From: mike.chowning at mgccc.org (Michael Chowning) Date: Tue, 22 Jan 2019 19:51:01 -0600 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> Message-ID: Just for grins, look into this link, from Ohio State University from back in 2011! https://news.osu.edu/antennas-in-your-clothes--new-design-could-pave-the-way/ There are also articles more recently (2018) on electronics in one?s clothes, and computers in one?s clothes in this website?s news as well. Mike, N8TTR > On Jan 22, 2019, at 2:57 PM, Wayne Burdick wrote: > > I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. > > So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. > > The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. > > Any other antenna suggestions? > > Wayne > N6KR > > > > ---- > elecraft.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to mike.chowning at mgccc.org From kl7uw at acsalaska.net Tue Jan 22 21:03:42 2019 From: kl7uw at acsalaska.net (Edward R Cole) Date: Tue, 22 Jan 2019 17:03:42 -0900 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop Message-ID: <201901230203.x0N23jPV009665@mail42c28.carrierzone.com> "Shades of WWII spy movies" with the german's sniffing RF with rotating loops on top of a small van! Great idea! Better Rx antennas, of course. I have plans to make a 6 or 8 foot loop out of some old 1/2 inch heliax cable (1/2 inch copper shield) to try on 630m for Rx. One foot loop on 14-MHz is comparable. And if anyone were to ask what you are doing: "just tracking deer or bengal tigers"! 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: dubususa at gmail.com From k2asp at kanafi.org Tue Jan 22 21:23:46 2019 From: k2asp at kanafi.org (Phil Kane) Date: Tue, 22 Jan 2019 18:23:46 -0800 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop In-Reply-To: <201901230203.x0N23jPV009665@mail42c28.carrierzone.com> References: <201901230203.x0N23jPV009665@mail42c28.carrierzone.com> Message-ID: <50392314-7e56-258a-b80d-e2bd527b28b7@kanafi.org> On 1/22/2019 6:03 PM, Edward R Cole wrote: > "Shades of WWII spy movies" with the german's sniffing RF with rotating > loops on top of a small van! That system - called the Finch loop in the US - was used by most if not all radio enforcement administrations world-wide in some version or other until well into the 1970s. 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 >From a Clearing in the Silicon Forest Beaverton (Washington County) Oregon From tombewick at gmail.com Tue Jan 22 21:57:09 2019 From: tombewick at gmail.com (K2bew) Date: Tue, 22 Jan 2019 21:57:09 -0500 Subject: [Elecraft] K2 VCO Alignment T5 L30 In-Reply-To: <1dd2638b-1253-b013-fbc4-2b311a2725e4@embarqmail.com> References: <1dd2638b-1253-b013-fbc4-2b311a2725e4@embarqmail.com> Message-ID: Don Et Al, So, It is with some embarrassment, and much relief, that I can report it was operator error and my BFO is now working perfectly. I got home from work and was getting ready to do some continuity checks to all the circuits surrounding and including U11, but decided I better check all the components again in that section with the RF board disconnected and out of the case. I found much to my chagrin I had not installed D37 and D38! I had them checked off in the manual as being installed, and I even wrote in pencil in the margin on the next step where you put the rest of the V149's in the RF board that I had 2 left over, but I failed to notice I had them left over because I did not put them in the step before!, good grief. Anyway I have a high BFO reading of 4917.60 and a low reading of 4911.98 with a difference of 5.62. Thank you Don and to others that gave suggestions, and I do wish those having similar problems well in their trouble shooting. Upward and onward 73, Tom Bewick, K2BEW On Sun, Jan 20, 2019 at 8:22 AM Don Wilhelm wrote: > Tom, > > Good work on the VFO. > Before you replace U11, measure the resistance from the wire on the > carrier board to the lead of the SMD IC. Do that for all pins. The PC > traces on the carrier board are not thru-plated holes and sometimes > become damaged with soldering. > > 73, > Don W3FPR > > On 1/19/2019 6:35 PM, K2bew wrote: > > Don et al, > > > > I tried a 15pf cap ( what I had on hand) at the source of Q19 to > > ground and I got .025v on R30 that did not change with the adjustment > > of L30, essentially no voltage. > > So, I took it off and it went back to 4.5 volts. So, then I tried > > Vicen?, EA3ADV's suggestion and I put 17 turns on the red wire of T5. > > That got me a voltage of 8.5V on R30 with L30 bottomed out that I > > was able to easily back off to a stable 6 volts. > > I went ahead and did the voltage tests on the other bands and had a > > nice range of 1.844 to 6 volts as my low and high on the VCO. > > So, that's all set. > > > > However, new problem. I went on to the test the BFO and I have 0000.04 > > kHz. on TP2, so it's not working. > > I went to the trouble shooting guide and I have 0.058 Vrms on pin 6 of > > U11 with the RF probe. > > Looking at the archives of the reflector that would indicate that U11 > > is bad and I need a replacement, correct? or are there other things I > > should look at first? > > The good thing is I'm becoming very accustomed to the radio and > > enjoying the trouble shooting. > > Thanks for all the help, I really appreciate it. > > > > 73, > > Tom Bewick, K2BEW > > > > From marjannorm at gmail.com Tue Jan 22 22:22:45 2019 From: marjannorm at gmail.com (Norm Lee) Date: Wed, 23 Jan 2019 13:52:45 +1030 Subject: [Elecraft] Urban Stealth Message-ID: Good thinking, Grant. How about the metal frame for a backpack? Unobtrusive, lightweight, and an intregal part of the backpack. Brilliant! Cheers Norm vk5gi McLaren Vale South Australia Sent from my iPad > On 23 Jan 2019, at 12:21 pm, elecraft-request at mailman.qth.net wrote: > > Send Elecraft mailing list submissions to > elecraft at mailman.qth.net > > To subscribe or unsubscribe via the World Wide Web, visit > http://mailman.qth.net/mailman/listinfo/elecraft > or, via email, send a message with subject or body 'help' to > elecraft-request at mailman.qth.net > > You can reach the person managing the list at > elecraft-owner at mailman.qth.net > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Elecraft digest..." > > > Today's Topics: > > 1. Re: Urban stealth HF: Inside-the-backpack loop antenna? > (Grant Youngman) > 2. Re: Urban stealth HF: Inside-the-backpack loop antenna? (K9MA) > 3. Re: Urban stealth HF: Inside-the-backpack loop antenna? > (Clay Autery) > 4. Re: Urban stealth HF: Inside-the-backpack loop antenna? > (Grant Youngman) > 5. Re: Urban stealth HF: Inside-the-backpack loop antenna? (K9MA) > 6. Re: Urban stealth HF: Inside-the-backpack loop antenna? (turnbull) > 7. Ferrite Rod? (was: Urban stealth HF...) (Steve Sergeant) > 8. Re: [KX3] Urban stealth HF: Inside-the-backpack loop antenna? > (Rich Arland) > 9. Re: Elecraft Digest, Vol 177, Issue 36 (Thaire Bryant) > 10. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (Robert Rennard) > 11. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (Bill Frantz) > 12. Re: Urban stealth HF: Inside-the-backpack loop antenna? (kevinr) > 13. Re: Auto-spot, tuning aids, and the arcane history of CW > pitch-matching (Joan) > 14. Re: Urban stealth HF: Inside-the-backpack loop antenna? > (Michael Chowning) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 22 Jan 2019 16:46:03 -0500 > From: Grant Youngman > To: Wayne Burdick > Cc: Elecraft , KX3 > Subject: Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop > antenna? > Message-ID: <066C8920-E8FF-4D53-8366-F1CB675F4DB9 at gmail.com> > Content-Type: text/plain; charset=utf-8 > > The problem is loop diameter. Efficiency on 20m of a 12? diameter loop would be on the order of 5%. Forget it entirely on 40m .. essentially a dummy load that would take around 1200 pf to resonate. On 17m efficiency would go up to around 11%. > > I use a loop portable all the time (Alexloop, W4OP) and they work well. They?re both about 3 ft in diameter. The Alexloop is light enough to be carried around hand held ... the W4OP needs a table top or tripod. > > Grant NQ5T > > Sent from my iPhone > >> On Jan 22, 2019, at 3:57 PM, Wayne Burdick wrote: >> >> >> >> So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. >> >> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. >> >> Any other antenna suggestions? >> >> Wayne >> > > > ------------------------------ > > Message: 2 > Date: Tue, 22 Jan 2019 15:51:00 -0600 > From: K9MA > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop > antenna? > Message-ID: <9ef9fe8c-52c4-318e-bb94-0c40229836c8 at sdellington.us> > Content-Type: text/plain; charset=utf-8; format=flowed > >> On 1/22/2019 15:46, Grant Youngman wrote: >> The problem is loop diameter. > > It doesn't have to be round. > > 73, > > Scott K9MA > > > -- > Scott K9MA > > k9ma at sdellington.us > > > > ------------------------------ > > Message: 3 > Date: Tue, 22 Jan 2019 16:01:56 -0600 > From: Clay Autery > To: Elecraft > Cc: KX3 > Subject: Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop > antenna? > Message-ID: > Content-Type: text/plain; charset=utf-8 > > Consider integrating the loop into a purpose built/modified backpack...? or the frame. > You can get a larger enclosed area, maintain easier use of the pack's volume without jacking up the loop, and better insure the loop geometry doesn't change as you pack/move/use it. > With a little creativity, yiu could also integrate some variable tuning into the design with access by hand if you place the adjusrable parts in the right location... > If you do switch in/out parts, it could be just a switch setup on the torso strap... > If QRP, I'd try to use the frame or an extension thereof... > Even the flexible plastic stiffeners in some frames could be used to carry a loop wire. > Good luck! > 73, > ClayKY5G > > > Sent from my Verizon, Samsung Galaxy smartphone > -------- Original message --------From: Wayne Burdick Date: 1/22/19 14:57 (GMT-06:00) To: Elecraft Cc: KX3 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? > I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. > > So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have? modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. > > The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course.? OTOH, we?re talking about HF. A cellphone by your ear is probably worse. > > Any other antenna suggestions? > > Wayne > N6KR > > > > ---- > elecraft.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to ky5g at montac.com > > ------------------------------ > > Message: 4 > Date: Tue, 22 Jan 2019 17:09:56 -0500 > From: Grant Youngman > To: K9MA > Cc: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop > antenna? > Message-ID: <2505C114-46DB-4ECC-B5B3-2020E74AE809 at gmail.com> > Content-Type: text/plain; charset=utf-8 > > Yes, it does not have to be round. The actual measurement of interest is Circumference of whatever shape it is (e.g, the total length of the radiator). A 12? loop or square, or whatever, is still going to have a very low efficiency at this size point. But closer to rounder is better ? > > Grant NQ5T > K3 #2091 KX3 #8342 > >> On Jan 22, 2019, at 4:51 PM, K9MA wrote: >> >> On 1/22/2019 15:46, Grant Youngman wrote: >>> The problem is loop diameter. >> >> It doesn't have to be round. >> >> 73, >> >> Scott K9MA >> >> >> -- > > > > ------------------------------ > > Message: 5 > Date: Tue, 22 Jan 2019 16:17:12 -0600 > From: K9MA > To: Grant Youngman > Cc: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop > antenna? > Message-ID: <545c324a-10cf-613a-030d-31ba07b6d064 at sdellington.us> > Content-Type: text/plain; charset=utf-8; format=flowed > > There's undoubtedly a trade-off between rounder and longer. I was > thinking of a typical more or less rectangular backpack, which would > have a circumference much larger than a 12 inch circle. A typical > backpacking pack could accommodate a circumference of about 88 inches, > more than twice that of a 12 inch round loop. Granted, such a large pack > wouldn't exactly be inconspicuous on an urban hiking trail, but you > could always put some rocks in it, and pretend you're training for a > Grand Canyon hike. > > 73, > Scott K9MA > >> On 1/22/2019 16:09, Grant Youngman wrote: >> Yes, it does not have to be round. ?The actual measurement of interest >> is Circumference of whatever shape it is (e.g, the total length of the >> radiator). ?A 12? loop or square, or whatever, ?is still going to have >> a very low efficiency at this size point. ?But closer to rounder is >> better ? >> >> Grant NQ5T >> K3 #2091 KX3 #8342 >> >>> On Jan 22, 2019, at 4:51 PM, K9MA >> > wrote: >>> >>>> On 1/22/2019 15:46, Grant Youngman wrote: >>>> The problem is loop diameter. >>> >>> It doesn't have to be round. >>> >>> 73, >>> >>> Scott K9MA >>> >>> >>> -- >> > > -- > Scott K9MA > > k9ma at sdellington.us > > > > ------------------------------ > > Message: 6 > Date: Tue, 22 Jan 2019 22:24:49 +0000 > From: turnbull > To: Grant Youngman , K9MA > Cc: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop > antenna? > Message-ID: <5c479834.1c69fb81.e4b5a.f26f at mx.google.com> > Content-Type: text/plain; charset=utf-8 > > Why not a collapsible Alexloop mag loop which fits in your back pack and will be nore efficient.? ? 73 Doug EI2CN > > > Sent from my Samsung Galaxy smartphone. > -------- Original message --------From: Grant Youngman Date: 22/01/2019 22:09 (GMT+00:00) To: K9MA Cc: elecraft at mailman.qth.net Subject: Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? > Yes, it does not have to be round.? The actual measurement of interest is Circumference of whatever shape it is (e.g, the total length of the radiator).? A 12? loop or square, or whatever,? is still going to have a very low efficiency at this size point.? But closer to rounder is better ? > > Grant NQ5T > K3 #2091 KX3 #8342 > >> On Jan 22, 2019, at 4:51 PM, K9MA wrote: >> >> On 1/22/2019 15:46, Grant Youngman wrote: >>> The problem is loop diameter. >> >> It doesn't have to be round. >> >> 73, >> >> Scott K9MA >> >> >> -- > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to turnbull at net1.ie > > ------------------------------ > > Message: 7 > Date: Tue, 22 Jan 2019 14:26:34 -0800 > From: Steve Sergeant > To: elecraft at mailman.qth.net > Subject: [Elecraft] Ferrite Rod? (was: Urban stealth HF...) > Message-ID: <63af7962-16c6-c0bd-b849-6779599a9975 at effable.com> > Content-Type: text/plain; charset=utf-8 > > Just as a way-out idea: How about a large ferrite rod on the end of a > walking staff, on top of a backpack, or hidden inside a top-hat? > > [ https://sites.google.com/site/g3xbmqrp3/antennas/ferrite_tx ] > >> On 1/22/19 12:57 PM, Wayne Burdick wrote: >> So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. >> >> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. >> >> Any other antenna suggestions? >> >> Wayne >> N6KR > > > > ------------------------------ > > Message: 8 > Date: Tue, 22 Jan 2019 22:59:32 +0000 > From: Rich Arland > To: Mark Goldberg , Michael Blake > > Cc: Elecraft Reflector > Subject: Re: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack > loop antenna? > Message-ID: > > > Content-Type: text/plain; charset="iso-8859-1" > > Ref: Homless......let's not forget the ever present shopping cart! Get a BIG one. It can be used as a counter poise in place of a set of radials or a drag wire. One could also try loading the shopping cart and using it as an antenna since the wheels are composed of a non-conductive set of wheels so the cart would be above ground. > > Just sayin' > > Vy 73 es gud DX! > > Rich Arland K7SZ WPE7BYR > Radio/electronics archaeologist > Author: The ARRL's Low Power Communicatoions > Bent Dipole Ranch, Dacula, GA > http://commobunker.blogspot.com/ > > > > ________________________________ > From: elecraft-bounces at mailman.qth.net on behalf of Michael Blake via Elecraft > Sent: Tuesday, January 22, 2019 4:40 PM > To: Mark Goldberg > Cc: Elecraft Reflector; KX3 > Subject: Re: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack loop antenna? > > Mark (W7MLG), It is scary how perfectly sane and normal your suggestions sound to me :) > > Very 73 - Mike - K9JRI > > > > > > > >> On Jan 22, 2019, at 4:32 PM, Mark Goldberg wrote: >> >> I would expect any high Q antenna like a loop would be detuned by any >> movement or any metal you pass by. One more reason to support automatic >> mobile screwdriver / mag loop antenna tuning on the KX series. >> A flag on a backpack would be more or less ignored. Just put a flag on the >> top of the AX1. Counterpoise is an issue though. Maybe a short one down >> your leg? >> >> Now, if you dressed as a homeless or otherwise distressed person, lots of >> weird things are possible, tinfoil hat with a big flag, dragged wire >> disguised as one of those fake animals on a leash, etc. The weirder, the >> more people will ignore you. >> >> Hopefully taken in the spirit of which it is posted. >> >> 73, >> >> Mark >> W7MLG >> >> >> On Tue, Jan 22, 2019 at 1:57 PM Wayne Burdick n6kr at elecraft.com [KX3] < >> KX3-noreply at yahoogroups.com> wrote: >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k7sz at live.com > > > ------------------------------ > > Message: 9 > Date: Tue, 22 Jan 2019 18:11:18 -0500 > From: Thaire Bryant > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Elecraft Digest, Vol 177, Issue 36 > Message-ID: <8DE822E3-CF74-460B-8A93-28352E1D1E6E at myfairpoint.net> > Content-Type: text/plain; charset=utf-8 > > Ed, I?d like the K1. > > Thaire. W2APF > >> On Jan 22, 2019, at 16:41, elecraft-request at mailman.qth.net wrote: >> >> Send Elecraft mailing list submissions to >> elecraft at mailman.qth.net >> >> To subscribe or unsubscribe via the World Wide Web, visit >> http://mailman.qth.net/mailman/listinfo/elecraft >> or, via email, send a message with subject or body 'help' to >> elecraft-request at mailman.qth.net >> >> You can reach the person managing the list at >> elecraft-owner at mailman.qth.net >> >> When replying, please edit your Subject line so it is more specific >> than "Re: Contents of Elecraft digest..." >> >> >> Today's Topics: >> >> 1. Re: Auto-spot, tuning aids, and the arcane history of CW >> pitch-matching (Mike Harris) >> 2. Re: Auto-spot, tuning aids, and the arcane history of CW >> pitch-matching (David Gilbert) >> 3. Re: Auto-spot, tuning aids, and the arcane history of CW >> pitch-matching (K9MA) >> 4. Re: Auto-spot, tuning aids, and the arcane history of CW >> pitch-matching (K9MA) >> 5. Re: K3 SWR Anomaly (N8LP) >> 6. K2, K1, W1, and other stuff for Sale (Dauer, Edward) >> 7. Re: Auto-spot, tuning aids, and the arcane history of CW >> pitch-matching (Chris Cox, N0UK) >> 8. Re: Auto-spot, tuning aids, and the arcane history of CW >> pitch-matching (Chris Cox, N0UK) >> 9. Zero Beat / CWT / Auto Spot (Jim Clymer) >> 10. Re: Auto-spot, tuning aids, and the arcane history of CW >> pitch-matching (Bob McGraw K4TAX) >> 11. Re: Auto-spot, tuning aids, and the arcane history of CW >> pitch-matching (Don Wilhelm) >> 12. Re: Auto-spot, tuning aids, and the arcane history of CW >> pitch-matching (rv6amark) >> 13. Re: [KX3] Auto-spot, tuning aids, and the arcane history of >> CW pitch-matching (Howard Hoyt) >> 14. Re: Auto-spot, tuning aids, and the arcane history of CW >> pitch-matching (Dave New, N8SBE) >> 15. Re: Auto-spot, tuning aids, and the arcane history of CW >> pitch-matching (Dave New, N8SBE) >> 16. Urban stealth HF: Inside-the-backpack loop antenna? >> (Wayne Burdick) >> 17. Auto-spot, tuning aids, and the arcane history of CW >> pitch-matching (Andy Durbin) >> 18. Re: Auto-spot, tuning aids, and the arcane history of CW >> pitch-matching (Wes) >> 19. Re: Auto-spot, tuning aids, and the arcane history of CW >> pitch-matching (ab2tc) >> 20. Re: [KX3] Urban stealth HF: Inside-the-backpack loop antenna? >> (Mark Goldberg) >> 21. Re: Urban stealth HF: Inside-the-backpack loop antenna? >> (Steve Sergeant) >> 22. Re: [KX3] Urban stealth HF: Inside-the-backpack loop antenna? >> (Michael Blake) >> 23. Re: Auto-spot, tuning aids, and the arcane history of CW >> pitch-matching (K9MA) >> >> >> ---------------------------------------------------------------------- >> >> Message: 1 >> Date: Tue, 22 Jan 2019 13:28:28 -0300 >> From: Mike Harris >> To: elecraft at mailman.qth.net >> Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> Message-ID: <99139b11-a047-0f9d-6981-4a1da33352c6 at horizon.co.fk> >> Content-Type: text/plain; charset=utf-8; format=flowed >> >> Yet another trick learnt by hard experience given away for free :-( >> >> Regards, >> >> Mike VP8NO >> >>> On 22/01/2019 11:14, Nr4c wrote: >>> Now, one thing you missed... when you?re working a big pileup and you feel you just can?t get through, it may be that all your ?buddies? are doing the same thing, using Auto-Spot! >>> >>> Now turn on XIT and set it to 12-20 Hz either way. Now your signal will be just a little different from all the others and you have a better chance of being heard. >>> >>> Sent from my iPhone >>> ...nr4c. bill >> >> >> ------------------------------ >> >> Message: 2 >> Date: Tue, 22 Jan 2019 09:59:04 -0700 >> From: David Gilbert >> To: elecraft at mailman.qth.net >> Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> Message-ID: >> Content-Type: text/plain; charset=utf-8; format=flowed >> >> >> Wayne, you forgot clicking on the DX Cluster spot.? ;) >> >> I'm being facetious, of course, but the practice of simply clicking on a >> cluster spot does point out a problem with zero beating by any means ... >> if every calling station is zero beat the station calling CQ isn't going >> to copy anyone. >> >> Zero beat isn't always a good thing. >> >> 73, >> Dave? AB7E >> >> >>> On 1/21/2019 10:09 PM, Wayne Burdick wrote: >>> Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially those not experienced in pitch-matching. Here's a bit of history on where these features came from and how they work. >>> >>> >>> CW Spotting History >>> >>> When a station finishes a CQ in CW mode, the operator faces the challenge of copying someone who's calling back. Callers may be weak or obscured by QRM; the op can usually deal with both problems by narrowing the filter passband. However, callers may also be off frequency. A calling station may be using a wide filter passband themselves, not attempting to carefully match their VFO frequency to that of the CQing station. The result may be no QSO, even when propagation is excellent. >>> >>> In the Days of Yore, a frequency offset between stations didn't always matter. Sometimes both stations used crystal-controlled transmitters, so operators had to patient tune around after calling CQ. >>> >>> As a 14-year-old novice I embraced this operating style for a year or so, armed with a dozen or so crusty FT-243 crystals for my Heath HW-16. I nearly wore out the socket swapping them in and out. After calling CQ, it was not unusual to find a caller 30 or more kHz away! (Away from "where" was a poorly answered question, as my Hallicrafters receiver dial wasn't exactly digital.) >>> >>> Fortunately I soon acquired an outboard VFO, a life-changing addition to my station. Jealous friends doubled up on their paper routes to pay for their own. Girls suddenly paid more attention to me. >>> >>> These days virtually everyone has a VFO, along with the expectation that they won't have to tune theirs very far, if at all, to tune you in. Not only that, they're stable and well calibrated, not like the beasts we had to skillfully tame. Progress! >>> >>> >>> Manual Spotting (SPOT switch) >>> >>> Once I had a VFO I quickly learned to do *manual* pitch matching. Older rigs did't provide a way to do that explicitly, so you'd improvise. Basically, you had to coerce a very weak signal out of your own transmitter, say by turning on only the driver, then tune the transmit VFO until you could hear your signal on your own receiver -- superimposed on the calling station, at the same pitch. This is what we call spotting. >>> >>> Of course spotting is a lot more convenient these days, as many rigs include a SPOT switch. This function is easy for a modern transceiver designer to add, because the radio's firmware is quite capable of turning on only the CW sidetone without transmitting. >>> >>> That is the purpose of the SPOT switch on all Elecraft transceivers. Tap SPOT, and you'll hear your sidetone pitch. Most people can do a good job of adjusting the VFO such that the CQing station's pitch matches that of the SPOT tone. This ensures that when you call them, you'll be close to their own frequency. >>> >>> >>> Tuning Aids: Filtering (APF), PLL (NE567), and Spectral (CWT) >>> >>> Since not everyone has an inherent musical ear, various hardware-enhanced means of tuning in CW signals have been developed. >>> >>> The simplest method is to just narrow your receiver passband so much that, if you can hear a station calling CQ at all, you're guaranteed to be "right on top of him." This assumes that your transceiver enforces alignment between its transmit and receive pitch...true of all Elecraft gear. >>> >>> Narrow filtering has gone through decades of evolution. Some filters were based on op-amps (active filters), while others were based on LC filtering, conscripting humongous toroidal cores scavenged from telco equipment. I acquired my stash of these from a haphazard mound of old switching racks, decaying in an abandoned aircraft hanger on the Bermuda U.S. Navy base. (That irresistible junk pile was also a mother load of TO5 transistors, multi-pound electrolytic capacitors, and tetanus, but that's another story.) Typically the toroids were 88 millihenries -- a huge value for a high-Q inductor, permitting resonance in the low audio range. >>> >>> Later, such filters migrated to digital signal processing, in the form of switched-capacitor ICs or DSPs. You can still buy these switched-capacitor chips, like the MF10, from various sources. It's instructive to roll your own tunable filter, just for fun. >>> >>> Whether passive or active, the goal of filtering is typically to achieve a narrow passband, say 250 Hz or less. With DSP, nearly perfect filters with "brick wall" passbands can be created. But these have the disadvantage of ringing like a bell when pinged by a CW signal or noise, making copy difficult. >>> >>> One solution incorporated into the K-line and KX-line is the Audio Peaking Filter (APF), which provides a 30-Hz bandwidth at -3 dB, but broad skirts, preventing ringing from occurring. As our customers will attest, APF works like magic on weak signals obscured by noise. >>> >>> Another forerunner to DSP techniques was the audio phase-locked-loop, using inexpensive ICs like the legendary LM567. When locked on a signal that matched its center frequency, the circuit would turn on an LED, alerting the operator that the VFO was now properly tuned. >>> >>> With the DSPs in our K-line and KX-line radios, we can provide a much more powerful tool: CWT, or "CW Tuning Aid." When enabled, CWT turns the upper portion of the rig's S-meter into something of a mini spectrum analyzer. The pitch of the strongest signal in the passband is analyzed by the DSP, then represented as a single segment of the bar graph. For CWT-enhanced manual spotting, the operator simply tunes the VFO slowly until the center CWT segment is flashing along with the keyed signal. >>> >>> Manual tuning with CWT can also be used in FSK-D and PSK-D modes as described in the owner's manual. >>> >>> >>> Closing the Loop: Auto-Spotting (SPOT + CWT) >>> >>> The Elecraft K3/K3S/KX2/KX3 take CW tuning another step forward by providing a way to *automatically* retune the VFO frequency to match that of a received signal. How does this work? >>> >>> When CWT is turned on, firmware treats the SPOT switch as AUTO-SPOT. The DSP analyzes the incoming signal, and with a bit of processing, determines its exact audio pitch. From there all that's needed is a bit of math to offset the VFO to match this pitch to the CW sidetone. >>> >>> There's another subtlety, though. Since a CW signal is generally being keyed on and off, the CWT algorithm has to ensure that it doesn't "take off," chasing a signal that's not there. To avoid this, we keep track of the energy in the passband, and slew the VFO incrementally over an average of about 0.5 second, moving only when the target signal is present. >>> >>> >>> How to Use Auto-Spot >>> >>> I encourage you to give the auto-spot feature a try. It's best to start with a fairly narrow passband, say 400-600 Hz; narrower if there's a lot of QRM. Find a signal, turn on CWT, then tap SPOT to tune it in. A second tap of SPOT may get even closer, especially if there's a lot of band noise. >>> >>> Auto-spot can also be used in Elecraft's PSK-D mode, i.e. for PSK31/PSK63. As with CW mode, just turn on CWT, tune in a prospective signal, and tap SPOT. Since PSK auto-decoding requires very accurate tuning, it's best to set the filter bandwidth to 50 Hz, then let auto-spot dial things in down to the last 2 or 3 Hz. If you have text decode turned on, you should start seeing text characters scroll by after auto-tuning has completed. Tapping a second time or fine-tuning the VFO a bit in 1 Hz steps may improve copy. >>> >>> 73, >>> Wayne >>> N6KR >>> >>> >>> >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to xdavid at cis-broadband.com >>> >> >> >> >> ------------------------------ >> >> Message: 3 >> Date: Tue, 22 Jan 2019 11:11:30 -0600 >> From: K9MA >> To: elecraft at mailman.qth.net >> Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> Message-ID: >> Content-Type: text/plain; charset=utf-8; format=flowed >> >> Back in my college days at W9YT, we had a Drake line, separate >> transmitter and receivers. When searching and pouncing in a contest, you >> had to spot the transmitter before every contact. Spotting required >> turning one of the rotary switches on the transmitter, a cumbersome >> process. Imagine doing that a couple thousand times in a weekend. At >> some point, we came up with the idea to hook a foot switch up to do the >> spotting, which made it much easier, and save a lot of wear and tear on >> the rotary switch, not to mention the operator's wrist. >> >> In those days, 40-50 years ago, transceivers just didn't work well on >> CW, so almost all CW operators used separate transmitters and receivers. >> Some, like the Drake line, could transceive, but had the same problem on >> CW. Transceivers didn't account for the BFO offset, and there was no RIT >> or XIT. If you called another station in transceive mode, you would be >> 700 Hz or so off frequency. Two transceivers pretty much couldn't work >> each other at all. Sometime while I was inactive in the late 70's and >> 80's, that problem was solved, and we no longer had to spot before every >> contact. I think that solution had to wait for frequency synthesis, as >> it otherwise would have required additional (expensive) crystals. Does >> anyone know of a non-synthesized transceiver that didn't have the CW >> offset problem? >> >> 73, >> Scott K9MA >> >> >>> On 1/21/2019 23:09, Wayne Burdick wrote: >>> Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially those not experienced in pitch-matching. Here's a bit of history on where these features came from and how they work. >> >> >> -- >> Scott K9MA >> >> k9ma at sdellington.us >> >> >> >> ------------------------------ >> >> Message: 4 >> Date: Tue, 22 Jan 2019 11:14:27 -0600 >> From: K9MA >> To: elecraft at mailman.qth.net >> Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> Message-ID: <5df178e8-5d66-fb3f-b731-d6a03656845f at sdellington.us> >> Content-Type: text/plain; charset=utf-8; format=flowed >> >>> On 1/22/2019 10:59, David Gilbert wrote: >>> >>> Wayne, you forgot clicking on the DX Cluster spot. ;) >> >> Everyone zero beat was, I think, a bigger problem before skimmers. >> Skimmer spots often seem to be quite a ways off frequency, probably >> because their SDR receivers aren't all that stable. Some may be in >> unheated buildings, too. >> >> 73, >> >> Scott K9MA >> >> -- >> Scott K9MA >> >> k9ma at sdellington.us >> >> >> >> ------------------------------ >> >> Message: 5 >> Date: Tue, 22 Jan 2019 11:13:25 -0700 (MST) >> From: N8LP >> To: elecraft at mailman.qth.net >> Subject: Re: [Elecraft] K3 SWR Anomaly >> Message-ID: <1548180805579-0.post at n2.nabble.com> >> Content-Type: text/plain; charset=us-ascii >> >> This may be out of left field, but I seem to recall from the deep recesses of >> my memory that there were some issues regarding an IF trap in the output of >> the K3. It could be that one of the components in the trap has changed and >> it now affects 40m. I don't know if newer K3s even have this circuit. Just >> thinking out loud. >> >> Larry N8LP >> >> >> >> >> >> -- >> Sent from: http://elecraft.365791.n2.nabble.com/ >> >> >> ------------------------------ >> >> Message: 6 >> Date: Tue, 22 Jan 2019 18:15:19 +0000 >> From: "Dauer, Edward" >> To: "elecraft at mailman.qth.net" >> Subject: [Elecraft] K2, K1, W1, and other stuff for Sale >> Message-ID: >> Content-Type: text/plain; charset="utf-8" >> >> Selling principal home, no further need for seven HF transceivers. So the following are for sale. Terms for each are: No pay Pal, shipment on receipt of payment, seller packs, and buyer pays actual shipment cost from Denver, CONUS only and selling to licensed hams only. All items unless otherwise noted are in excellent cosmetic and electrical condition. Nonsmoking environment, never used out of doors or in mobile / portable operations. >> >> I have two heavy dimpled main tuning knobs for the K2s. Original cost $90 (as I remember it), option to buy for $50 each with purchase of a K2. Most interconnecting cables for K2s are also available at no additional cost. >> >> K2/10 (s/n 7637) with KNB2, KAF2, KAT2, KIO2, KBT2 (with battery), and optional heavy dimple knob. $900. >> >> K2/10 (s/n 7687) with KNB2, KSB2, KAF2, KPA100, and KAT100-1 in matching low profile enclosure, with tilt stand. $1,300. >> >> K2/10 (s/n 7739) and KAT100/KPA100 in EC-2 enclosure (?twins? configuration). K2 includes KNB2, KSB2, KAT2, KAF2, KIO2. $1,550. >> >> K1 (s/n 3440) 17 and 30 meters, with KAT1 internal ATU, KNB1 noise blanker, and KBT1 internal battery adapter. Includes extra cover and speaker (not used when cover with ATU is installed.) Tuned and aligned by Alan Wilcox. $350. >> >> Elecraft W1 Power Meter in acrylic case w/stand. $70 >> >> KD1JV Triband Transceiver and external ATU (Kit built, never tested.) $100 >> >> Pico Keyer condition unknown. Free to whomever buys the first K2 or K1. >> >> >> Ted, KN1CBR >> >> >> >> Edward A. Dauer >> Dean Emeritus and Professor Emeritus of Law >> University of Denver >> >> >> ------------------------------ >> >> Message: 7 >> Date: Tue, 22 Jan 2019 12:54:36 -0600 (CST) >> From: "Chris Cox, N0UK" >> To: K9MA >> Cc: elecraft at mailman.qth.net >> Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> Message-ID: >> Content-Type: TEXT/PLAIN; charset=US-ASCII >> >> The transceive problem didn't seem to exist on any older non-synthesized >> transceiver that I have used, including FT-101 series, TS-520/820 and >> later, KW Electronics KW-2000E. these were all '70s era transceivers. >> >> -- >> 73 Chris Cox, N0UK, G4JEC >> chrisc at chris.org >> >> >> >> ------------------------------ >> >> Message: 8 >> Date: Tue, 22 Jan 2019 12:51:50 -0600 (CST) >> From: "Chris Cox, N0UK" >> To: K9MA >> Cc: elecraft at mailman.qth.net >> Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> Message-ID: >> Content-Type: TEXT/PLAIN; charset=US-ASCII >> >> >> >> -- >> 73 Chris Cox, N0UK, G4JEC >> chrisc at chris.org >> >>> On Tue, 22 Jan 2019, K9MA wrote: >>> >>> transmitter before every contact. Spotting required turning one of the rotary >>> switches on the transmitter, a cumbersome process. Imagine doing that a couple >>> thousand times in a weekend. At some point, we came up with the idea to hook a >>> foot switch up to do the spotting, which made it much easier, and save a lot >>> of wear and tear on the rotary switch, not to mention the operator's wrist. >>> >>> In those days, 40-50 years ago, transceivers just didn't work well on CW, so >>> almost all CW operators used separate transmitters and receivers. Some, like >>> the Drake line, could transceive, but had the same problem on CW. Transceivers >>> didn't account for the BFO offset, and there was no RIT or XIT. If you called >>> another station in transceive mode, you would be 700 Hz or so off frequency. >>> Two transceivers pretty much couldn't work each other at all. Sometime while I >>> was inactive in the late 70's and 80's, that problem was solved, and we no >>> longer had to spot before every contact. I think that solution had to wait for >>> frequency synthesis, as it otherwise would have required additional >>> (expensive) crystals. Does anyone know of a non-synthesized transceiver that >>> didn't have the CW offset problem? >>> >>> 73, >>> Scott K9MA >>> >>> >>>> On 1/21/2019 23:09, Wayne Burdick wrote: >>>> Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- >>>> are very useful tools for CW operators, especially those not experienced in >>>> pitch-matching. Here's a bit of history on where these features came from >>>> and how they work. >>> >>> >>> -- >>> Scott K9MA >>> >>> k9ma at sdellington.us >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to chrisc at chris.org >>> >> >> >> ------------------------------ >> >> Message: 9 >> Date: Tue, 22 Jan 2019 14:27:25 -0500 >> From: Jim Clymer >> To: elecraft at mailman.qth.net >> Subject: [Elecraft] Zero Beat / CWT / Auto Spot >> Message-ID: >> >> Content-Type: text/plain; charset="UTF-8" >> >>> >>> Anyone who has ever had the privilege of being on the receiving end of a >>> huge CW pileup has a new appreciation for the tone deaf and those who never >>> learned to use CWT. (And the savvy pileup busters who >> >> intentionally avoid zero beat.) Of course there is always the W5 - dead >>> zero beat - who is so loud you don't hear anyone else no matter how far off >>> frequency! >> >> Jim - WS6X >> >>> >> Date: Mon, 21 Jan 2019 21:09:44 -0800 >>> From: Wayne Burdick >>> To: Elecraft Reflector >>> Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history >>> of CW pitch-matching >>> >>> CW Spotting History >>> Tuning Aids: Filtering (APF), PLL (NE567), and Spectral (CWT) >>> How to Use Auto-Spot >>> >>> >> >> >> ------------------------------ >> >> Message: 10 >> Date: Tue, 22 Jan 2019 14:14:00 -0600 >> From: Bob McGraw K4TAX >> To: elecraft at mailman.qth.net >> Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> Message-ID: >> Content-Type: text/plain; charset=utf-8; format=flowed >> >> Another trick which works well.?? Tune to a WWV frequency in CW mode.? >> Press SPOT and the radio will jump on the exact carrier frequency.?? The >> SPOT function can pull on to the WWV frequency as far away as about 100 >> Hz.? Once the radio has? resolved SPOT, the readout / display is the >> frequency of WWV +/- the error in Hz. Thus the readout of 9.999.992 is >> indicating being 8 Hz low. >> >> From a cold start, FP being 19?C, I find? -8 Hz error on 10 MHz WWV.? >> After about 15 minutes the FP is 25?C and the error is -1 Hz.? I've >> tweaked the REF CAL such that after 1/2 hr. in receive tuning to WWV >> from both higher and lower will produce a reading of 10.000.000.?? Will >> all stations pse QNZ? QNN. >> >> 73 >> >> Bob, K4TAX >> >> >> >> >> ------------------------------ >> >> Message: 11 >> Date: Tue, 22 Jan 2019 15:19:54 -0500 >> From: Don Wilhelm >> To: "Chris Cox, N0UK" >> Cc: elecraft at mailman.qth.net >> Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> Message-ID: <48f3e257-a765-e853-62c6-d20e061093af at embarqmail.com> >> Content-Type: text/plain; charset=utf-8; format=flowed >> >> In that era, SSB capable transceivers often offset the BFO by using a >> different BFO crystal for CW transmit or CW receive - but that technique >> slaved you to one sideband and one CW pitch. >> There were other ways of doing the offset as well, but it was usually >> done by shifting the BFO frequency. >> >> 73, >> Don W3FPR >> >>> On 1/22/2019 1:54 PM, Chris Cox, N0UK wrote: >>> The transceive problem didn't seem to exist on any older non-synthesized >>> transceiver that I have used, including FT-101 series, TS-520/820 and >>> later, KW Electronics KW-2000E. these were all '70s era transceivers. >>> >>> -- >>> 73 Chris Cox, N0UK, G4JEC >>> chrisc at chris.org >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to donwilh at embarqmail.com >>> >> >> >> ------------------------------ >> >> Message: 12 >> Date: Tue, 22 Jan 2019 12:26:40 -0800 >> From: rv6amark >> To: K9MA , elecraft at mailman.qth.net >> Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> Message-ID: >> Content-Type: text/plain; charset=utf-8 >> >> Re:? "Does anyone know of a non-synthesized transceiver that didn't have the CW offset problem?" >> >> My TenTec 540 doesn't have that problem, but my much older TenTec PM-3A does.? If my memory is correct, the Heathkit HW8 has the problem, but they fixed it in the HW9 with a small capacitor that switches in and out for RX/TX to shift the VFO. >> >> There are others. >> >> Mark >> KE6BB >> >> >> >> Sent via the Samsung Galaxy Tab E, an AT&T 4G LTE tablet >> -------- Original message --------From: K9MA Date: 1/22/19 9:11 AM (GMT-08:00) To: elecraft at mailman.qth.net Subject: Re: [Elecraft] Auto-spot, tuning aids, >> ? and the arcane history of CW pitch-matching >> Back in my college days at W9YT, we had a Drake line, separate >> transmitter and receivers. When searching and pouncing in a contest, you >> had to spot the transmitter before every contact. Spotting required >> turning one of the rotary switches on the transmitter, a cumbersome >> process. Imagine doing that a couple thousand times in a weekend. At >> some point, we came up with the idea to hook a foot switch up to do the >> spotting, which made it much easier, and save a lot of wear and tear on >> the rotary switch, not to mention the operator's wrist. >> >> In those days, 40-50 years ago, transceivers just didn't work well on >> CW, so almost all CW operators used separate transmitters and receivers. >> Some, like the Drake line, could transceive, but had the same problem on >> CW. Transceivers didn't account for the BFO offset, and there was no RIT >> or XIT. If you called another station in transceive mode, you would be >> 700 Hz or so off frequency. Two transceivers pretty much couldn't work >> each other at all. Sometime while I was inactive in the late 70's and >> 80's, that problem was solved, and we no longer had to spot before every >> contact. I think that solution had to wait for frequency synthesis, as >> it otherwise would have required additional (expensive) crystals. Does >> anyone know of a non-synthesized transceiver that didn't have the CW >> offset problem? >> >> 73, >> Scott K9MA >> >> >>> On 1/21/2019 23:09, Wayne Burdick wrote: >>> Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially those not experienced in pitch-matching. Here's a bit of history on where these features came from and how they work. >> >> >> -- >> Scott? K9MA >> >> k9ma at sdellington.us >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to rv6amark at yahoo.com >> >> ------------------------------ >> >> Message: 13 >> Date: Tue, 22 Jan 2019 15:27:03 -0500 >> From: Howard Hoyt >> To: Mel Snyder , Wayne Burdick >> >> Cc: Elecraft Reflector , >> "KX3 at yahoogroups.com" >> Subject: Re: [Elecraft] [KX3] Auto-spot, tuning aids, and the arcane >> history of CW pitch-matching >> Message-ID: <90b12bb3-b6c7-5d34-e454-3e842f7e3b2e at mebtel.net> >> Content-Type: text/plain; charset=utf-8; format=flowed >> >> Hi Mel, >> >> I experienced the same reading Wayne's highly informative post!! >> >> I started off in 1970 with a homebrew 6L6/807 xtal xmtr with maybe 12 >> xtals and a Hallicrafters S-38 which gave me hundreds of mesmerizing >> hours in my parents basement.? That rig gave me my first huge shock as >> well, so it is indeed memorable.? What idiot thought it was a good idea >> to put the 500 V B+ connection on an unguarded terminal strip on the >> back panel?? Wait, that was me... >> >> Still, I thought I was in heaven until my high school club bought a >> Drake R-4B/T-4XB which blew me away and I ended up owning a pair in the >> early 1980s and still love the Drake twins to this day. However they >> have been gathering dust since I got my K3, which is the best rig >> overall I have used to date, and love my KX3 in the car and on travel. >> >> Although it works well, I don't use Auto Spot is because it scrambles my >> feeble brain as to where I am tuned; I am just not used to a rig >> changing frequency without me intentionally doing it.? Perhaps this is a >> mental artifact of heavy contesting, where I am loathe to leave a good >> RUN frequency, indeed I often lock VFO A so I don't accidentally bump >> the VFO A knob. >> >> Cheers & 73, >> Howie / WA4PSC >> >> >>> On 1/22/2019 1:51 PM, Mel Snyder ct_digital_photog at yahoo.com [KX3] wrote: >>> >>> Wow, this is *great,* Wayne! Thanks. I am away from home, but will be >>> interested to test the auto-spot when I get home. >>> >>> >>> A wonderful trip down memory lane. While you were swapping crystals >>> with your HW-16, I was a few years ahead of you as KN3AFW, swapping >>> them first into my home-brew 6AG7-6L6 rig, and then, a borrowed Eico 720. >>> >>> I still own a lovely Johnson Ranger II, and an SB-301 Heathkit >>> receiver with the original 500Hz filter, the combination of which >>> require your explained tuning the VFO to the note of the received >>> signal. But both are on my list to sell, along with my HW-9 and >>> FT-707, inasmuch with my KX3 for good band conditions and my >>> inherited/restored TS-940S when they?re poor, they are all surplus >>> space-consumers. >>> >>> Every time I turn on my KX3, I am in awe of how far ham radio has >>> progressed in the past 61 years since I was licensed. Like taking a >>> cell call on my Apple Watch, it?s beyond anything I dreamed of as a >>> kid back then. So glad I stopped by the Elecraft exhibit at the 2014 >>> Hartford ARRL convention, and was taken by the enthusiasm of KX3 users >>> that gathered there - and decided to join the cult. >>> >>> Mel, W3PYF >>> >>> >>> >>>> On Jan 22, 2019, at 12:09 AM, Wayne Burdick n6kr at elecraft.com >>>> [KX3] >>> > wrote: >>>> >>>> Elecraft's auto-spot and CWT features -- available on the >>>> K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially >>>> those not experienced in pitch-matching. Here's a bit of history on >>>> where these features came from and how they work. >>>> >>>> CW Spotting History >>>> >>>> When a station finishes a CQ in CW mode, the operator faces the >>>> challenge of copying someone who's calling back. Callers may be weak >>>> or obscured by QRM; the op can usually deal with both problems by >>>> narrowing the filter passband. However, callers may also be off >>>> frequency. A calling station may be using a wide filter passband >>>> themselves, not attempting to carefully match their VFO frequency to >>>> that of the CQing station. The result may be no QSO, even when >>>> propagation is excellent. >>>> >>>> In the Days of Yore, a frequency offset between stations didn't >>>> always matter. Sometimes both stations used crystal-controlled >>>> transmitters, so operators had to patient tune around after calling CQ. >>>> >>>> As a 14-year-old novice I embraced this operating style for a year or >>>> so, armed with a dozen or so crusty FT-243 crystals for my Heath >>>> HW-16. I nearly wore out the socket swapping them in and out. After >>>> calling CQ, it was not unusual to find a caller 30 or more kHz away! >>>> (Away from "where" was a poorly answered question, as my >>>> Hallicrafters receiver dial wasn't exactly digital.) >>>> >>>> Fortunately I soon acquired an outboard VFO, a life-changing addition >>>> to my station. Jealous friends doubled up on their paper routes to >>>> pay for their own. Girls suddenly paid more attention to me. >>>> >>>> These days virtually everyone has a VFO, along with the expectation >>>> that they won't have to tune theirs very far, if at all, to tune you >>>> in. Not only that, they're stable and well calibrated, not like the >>>> beasts we had to skillfully tame. Progress! >>>> >>>> Manual Spotting (SPOT switch) >>>> >>>> Once I had a VFO I quickly learned to do *manual* pitch matching. >>>> Older rigs did't provide a way to do that explicitly, so you'd >>>> improvise. Basically, you had to coerce a very weak signal out of >>>> your own transmitter, say by turning on only the driver, then tune >>>> the transmit VFO until you could hear your signal on your own >>>> receiver -- superimposed on the calling station, at the same pitch. >>>> This is what we call spotting. >>>> >>>> Of course spotting is a lot more convenient these days, as many rigs >>>> include a SPOT switch. This function is easy for a modern transceiver >>>> designer to add, because the radio's firmware is quite capable of >>>> turning on only the CW sidetone without transmitting. >>>> >>>> That is the purpose of the SPOT switch on all Elecraft transceivers. >>>> Tap SPOT, and you'll hear your sidetone pitch. Most people can do a >>>> good job of adjusting the VFO such that the CQing station's pitch >>>> matches that of the SPOT tone. This ensures that when you call them, >>>> you'll be close to their own frequency. >>>> >>>> Tuning Aids: Filtering (APF), PLL (NE567), and Spectral (CWT) >>>> >>>> Since not everyone has an inherent musical ear, various >>>> hardware-enhanced means of tuning in CW signals have been developed. >>>> >>>> The simplest method is to just narrow your receiver passband so much >>>> that, if you can hear a station calling CQ at all, you're guaranteed >>>> to be "right on top of him." This assumes that your transceiver >>>> enforces alignment between its transmit and receive pitch...true of >>>> all Elecraft gear. >>>> >>>> Narrow filtering has gone through decades of evolution. Some filters >>>> were based on op-amps (active filters), while others were based on LC >>>> filtering, conscripting humongous toroidal cores scavenged from telco >>>> equipment. I acquired my stash of these from a haphazard mound of old >>>> switching racks, decaying in an abandoned aircraft hanger on the >>>> Bermuda U.S. Navy base. (That irresistible junk pile was also a >>>> mother load of TO5 transistors, multi-pound electrolytic capacitors, >>>> and tetanus, but that's another story.) Typically the toroids were 88 >>>> millihenries -- a huge value for a high-Q inductor, permitting >>>> resonance in the low audio range. >>>> >>>> Later, such filters migrated to digital signal processing, in the >>>> form of switched-capacitor ICs or DSPs. You can still buy these >>>> switched-capacitor chips, like the MF10, from various sources. It's >>>> instructive to roll your own tunable filter, just for fun. >>>> >>>> Whether passive or active, the goal of filtering is typically to >>>> achieve a narrow passband, say 250 Hz or less. With DSP, nearly >>>> perfect filters with "brick wall" passbands can be created. But these >>>> have the disadvantage of ringing like a bell when pinged by a CW >>>> signal or noise, making copy difficult. >>>> >>>> One solution incorporated into the K-line and KX-line is the Audio >>>> Peaking Filter (APF), which provides a 30-Hz bandwidth at -3 dB, but >>>> broad skirts, preventing ringing from occurring. As our customers >>>> will attest, APF works like magic on weak signals obscured by noise. >>>> >>>> Another forerunner to DSP techniques was the audio phase-locked-loop, >>>> using inexpensive ICs like the legendary LM567. When locked on a >>>> signal that matched its center frequency, the circuit would turn on >>>> an LED, alerting the operator that the VFO was now properly tuned. >>>> >>>> With the DSPs in our K-line and KX-line radios, we can provide a much >>>> more powerful tool: CWT, or "CW Tuning Aid." When enabled, CWT turns >>>> the upper portion of the rig's S-meter into something of a mini >>>> spectrum analyzer. The pitch of the strongest signal in the passband >>>> is analyzed by the DSP, then represented as a single segment of the >>>> bar graph. For CWT-enhanced manual spotting, the operator simply >>>> tunes the VFO slowly until the center CWT segment is flashing along >>>> with the keyed signal. >>>> >>>> Manual tuning with CWT can also be used in FSK-D and PSK-D modes as >>>> described in the owner's manual.. >>>> >>>> Closing the Loop: Auto-Spotting (SPOT + CWT) >>>> >>>> The Elecraft K3/K3S/KX2/KX3 take CW tuning another step forward by >>>> providing a way to *automatically* retune the VFO frequency to match >>>> that of a received signal. How does this work? >>>> >>>> When CWT is turned on, firmware treats the SPOT switch as AUTO-SPOT. >>>> The DSP analyzes the incoming signal, and with a bit of processing, >>>> determines its exact audio pitch. From there all that's needed is a >>>> bit of math to offset the VFO to match this pitch to the CW sidetone. >>>> >>>> There's another subtlety, though. Since a CW signal is generally >>>> being keyed on and off, the CWT algorithm has to ensure that it >>>> doesn't "take off," chasing a signal that's not there. To avoid this, >>>> we keep track of the energy in the passband, and slew the VFO >>>> incrementally over an average of about 0.5 second, moving only when >>>> the target signal is present. >>>> >>>> How to Use Auto-Spot >>>> >>>> I encourage you to give the auto-spot feature a try. It's best to >>>> start with a fairly narrow passband, say 400-600 Hz; narrower if >>>> there's a lot of QRM. Find a signal, turn on CWT, then tap SPOT to >>>> tune it in. A second tap of SPOT may get even closer, especially if >>>> there's a lot of band noise. >>>> >>>> Auto-spot can also be used in Elecraft's PSK-D mode, i.e. for >>>> PSK31/PSK63. As with CW mode, just turn on CWT, tune in a prospective >>>> signal, and tap SPOT. Since PSK auto-decoding requires very accurate >>>> tuning, it's best to set the filter bandwidth to 50 Hz, then let >>>> auto-spot dial things in down to the last 2 or 3 Hz. If you have text >>>> decode turned on, you should start seeing text characters scroll by >>>> after auto-tuning has completed. Tapping a second time or fine-tuning >>>> the VFO a bit in 1 Hz steps may improve copy. >>>> >>>> 73, >>>> Wayne >>>> N6KR >>>> >>> >>> __._,_.___ >>> ------------------------------------------------------------------------ >>> Posted by: Mel Snyder >>> ------------------------------------------------------------------------ >>> Reply via web post >>> >>> ? Reply to sender >>> >>> ? Reply to group >>> >>> ? Start a New Topic >>> >>> ? Messages in this topic >>> >>> (2) >>> >>> ------------------------------------------------------------------------ >>> Have you tried the highest rated email app? >>> With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated >>> email app on the market. What are you waiting for? Now you can access >>> all your inboxes (Gmail, Outlook, AOL and more) in one place. Never >>> delete an email again with 1000GB of free cloud storage. >>> ------------------------------------------------------------------------ >>> Visit Your Group >>> >>> >>> >>> Yahoo! Groups >>> >>> >>> ? Privacy >>> ? >>> Unsubscribe >>> ? Terms >>> of Use >>> >>> SPONSORED LINKS >>> . >>> >>> __,_._,___ >> >> >> ------------------------------ >> >> Message: 14 >> Date: Tue, 22 Jan 2019 13:45:13 -0700 >> From: "Dave New, N8SBE" >> To: elecraft at mailman.qth.net >> Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> Message-ID: >> <20190122134513.1fa1e31b6b6b329ecc65be958babcc1f.2b096db9da.wbe at email09.godaddy.com> >> >> Content-Type: text/plain; charset="utf-8" >> >> When I upgraded from my K3 to a K3s, I took the opportunity to order a >> 10 MHz Ref In option. >> >> I finally got around to hooking it up to a Leo Bodnar GPS receiver I >> picked up at Dayton a year ago, and now the K3s is rock solid spot on >> frequency. >> >> Don't know how i did without it all these years... >> >> 73, >> >> -- Dave, N8SBE >> >> -------- Original Message -------- >> Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> From: Bob McGraw K4TAX >> Date: Tue, January 22, 2019 3:14 pm >> To: elecraft at mailman.qth.net >> >> Another trick which works well. Tune to a WWV frequency in CW mode. >> Press SPOT and the radio will jump on the exact carrier frequency. The >> SPOT function can pull on to the WWV frequency as far away as about 100 >> Hz. Once the radio has resolved SPOT, the readout / display is the >> frequency of WWV +/- the error in Hz. Thus the readout of 9.999.992 is >> indicating being 8 Hz low. >> >> From a cold start, FP being 19?C, I find -8 Hz error on 10 MHz WWV. >> After about 15 minutes the FP is 25?C and the error is -1 Hz. I've >> tweaked the REF CAL such that after 1/2 hr. in receive tuning to WWV >> from both higher and lower will produce a reading of 10.000.000. Will >> all stations pse QNZ QNN. >> >> 73 >> >> Bob, K4TAX >> >> >> >> >> >> ------------------------------ >> >> Message: 15 >> Date: Tue, 22 Jan 2019 13:47:04 -0700 >> From: "Dave New, N8SBE" >> To: "Elecraft Reflector" >> Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> Message-ID: >> <20190122134704.1fa1e31b6b6b329ecc65be958babcc1f.b1b5d245eb.wbe at email09.godaddy.com> >> >> Content-Type: text/plain; charset="utf-8" >> >> I'm a great fan of using the auto-spot feature, and love to show it off >> to all shack visitors, as an example of yet another reason they need to >> upgrade to Elecraft, from whatever boat anchor they are still using... >> >> 73, >> >> -- Dave, N8SBE >> >> >> ------------------------------ >> >> Message: 16 >> Date: Tue, 22 Jan 2019 12:57:16 -0800 >> From: Wayne Burdick >> To: Elecraft >> Cc: KX3 >> Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop >> antenna? >> Message-ID: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C at elecraft.com> >> Content-Type: text/plain; charset=utf-8 >> >> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. >> >> So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. >> >> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. >> >> Any other antenna suggestions? >> >> Wayne >> N6KR >> >> >> >> ---- >> elecraft.com >> >> ------------------------------ >> >> Message: 17 >> Date: Tue, 22 Jan 2019 20:57:26 +0000 >> From: Andy Durbin >> To: "elecraft at mailman.qth.net" >> Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of >> CW pitch-matching >> Message-ID: >> >> >> Content-Type: text/plain; charset="iso-8859-1" >> >> "Find a signal, turn on CWT, then tap SPOT to tune it in. A second tap of SPOT may get even closer, especially if there's a lot of band noise." >> >> and >> >> "I'm a great fan of using the auto-spot feature, and love to show it off to all shack visitors, as an example of yet another reason they need to upgrade to Elecraft," >> >> I must be missing something. How is this 2 step activated spot feature better than a single press of Kenwood's CWT? I often use CWT on my TS-590S but almost always with a spit or XIT offset (I didn't know that was a secret). >> >> Andy, k3wyc >> >> >> ------------------------------ >> >> Message: 18 >> Date: Tue, 22 Jan 2019 14:01:33 -0700 >> From: Wes >> To: elecraft at mailman.qth.net >> Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> Message-ID: <619ac274-ad1e-282d-8b1e-0b37685b0e74 at triconet.org> >> Content-Type: text/plain; charset=utf-8; format=flowed >> >> Are you serious? >> >> Wes? N7WS >> >>> On 1/22/2019 1:45 PM, Dave New, N8SBE wrote: >>> Don't know how i did without it all these years... >>> >>> 73, >>> >>> -- Dave, N8SBE >>> >> >> >> >> ------------------------------ >> >> Message: 19 >> Date: Tue, 22 Jan 2019 14:01:52 -0700 (MST) >> From: ab2tc >> To: elecraft at mailman.qth.net >> Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> Message-ID: <1548190912091-0.post at n2.nabble.com> >> Content-Type: text/plain; charset=us-ascii >> >> Hi all, >> >> Agreed; the problem can easily be solved in analog radios without frequency >> synthesis by offsetting the BFO frequency by those 700Hz or so in transmit. >> In down conversion machines with a single IF in the 8-9MHz range that could >> easily be done by pulling the BFO crystal. The Drake TR4 undoubtedly worked >> this way. I bought my first transceiver in 1969 (I think), a Yaesu FT-200, I >> think it was called in the US. In Europe it was sold as Sommerkamp FT-250. >> As the Drake TR4 it was down conversion with a single 9MHz IF and worked CW >> by pulling the BFO crystal into the passband of the 9MHz crystal filter on >> transmit. >> >> Another technical solution, which was used in the Collins KWM2 (and probably >> KWM1) was to keep the balanced (de)modulator balanced and inject an audio >> tone into it on transmit. Clearly the spectral purity of the CW signal would >> be less than ideal in this case, but I am not sure if FCC type approval was >> needed in those days. Nor am I sure what the the FCC spec for "inband" (read >> close in) spurs would be. >> >> AB2TC - Knut >> >> >> n0uk wrote >>> The transceive problem didn't seem to exist on any older non-synthesized >>> transceiver that I have used, including FT-101 series, TS-520/820 and >>> later, KW Electronics KW-2000E. these were all '70s era transceivers. >>> >>> >>> >>> -- >>> 73 Chris Cox, N0UK, G4JEC >> >>> chrisc@ >> >>> >>> _ >>> >> >> >> >> >> >> -- >> Sent from: http://elecraft.365791.n2.nabble.com/ >> >> >> ------------------------------ >> >> Message: 20 >> Date: Tue, 22 Jan 2019 14:32:47 -0700 >> From: Mark Goldberg >> To: Wayne Burdick >> Cc: Elecraft , KX3 >> Subject: Re: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack >> loop antenna? >> Message-ID: >> >> Content-Type: text/plain; charset="UTF-8" >> >> I would expect any high Q antenna like a loop would be detuned by any >> movement or any metal you pass by. One more reason to support automatic >> mobile screwdriver / mag loop antenna tuning on the KX series. >> A flag on a backpack would be more or less ignored. Just put a flag on the >> top of the AX1. Counterpoise is an issue though. Maybe a short one down >> your leg? >> >> Now, if you dressed as a homeless or otherwise distressed person, lots of >> weird things are possible, tinfoil hat with a big flag, dragged wire >> disguised as one of those fake animals on a leash, etc. The weirder, the >> more people will ignore you. >> >> Hopefully taken in the spirit of which it is posted. >> >> 73, >> >> Mark >> W7MLG >> >> >> On Tue, Jan 22, 2019 at 1:57 PM Wayne Burdick n6kr at elecraft.com [KX3] < >> KX3-noreply at yahoogroups.com> wrote: >> >>> >>> >>> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 >>> antenna and a dragged counterpoise. In wide open spaces it?s a blast. But >>> urban settings with dogs, wire-eating cacti and overzealous Neighborhood >>> Watchers can distract from one?s radio experience. >>> >>> So, just for grins, I?d like to try something completely incognerdo: no >>> visible antenna. A small remotely tuned loop (say 12? diameter) would seem >>> to be the best choice, as it would fit entirely inside a small backpack. It >>> could have modest efficiency while not requiring a counterpoise wire. >>> Rigid 1? copper pipe formed in a square would be convenient to deploy. >>> >>> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, >>> of course. OTOH, we?re talking about HF. A cellphone by your ear is >>> probably worse. >>> >>> Any other antenna suggestions? >>> >>> Wayne >>> N6KR >>> >>> >>> >>> ---- >>> elecraft.com >>> >>> __._,_.___ >>> ------------------------------ >>> Posted by: Wayne Burdick >>> ------------------------------ >>> Reply via web post >>> >>> ? Reply to sender >>> >>> ? Reply to group >>> >>> ? Start a New Topic >>> >>> ? Messages in this topic >>> >>> (1) >>> ------------------------------ >>> Have you tried the highest rated email app? >>> With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email >>> app on the market. What are you waiting for? Now you can access all your >>> inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email >>> again with 1000GB of free cloud storage. >>> ------------------------------ >>> Visit Your Group >>> >>> >>> >>> [image: Yahoo! Groups] >>> >>> ? Privacy ? >>> Unsubscribe ? Terms >>> of Use >>> >>> SPONSORED LINKS >>> . >>> >>> __,_._,___ >>> >> >> >> ------------------------------ >> >> Message: 21 >> Date: Tue, 22 Jan 2019 13:38:35 -0800 >> From: Steve Sergeant >> To: elecraft at mailman.qth.net >> Subject: Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop >> antenna? >> Message-ID: <63fb5351-46b5-0d73-e53d-ba852f6543b7 at effable.com> >> Content-Type: text/plain; charset=utf-8 >> >>> On 1/22/19 12:57 PM, Wayne Burdick wrote: >>> A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. >> >> [Deletia] >> >>> Any other antenna suggestions? >> >> I tried a 52ft 26ga wire J-pole/Zep on the line of a 5ft parafoil kite, >> with 50ft of kite line above the antenna, and another 50' of RG-174 >> between the antenna and the radio. >> >> I'll grant that this is not as invisible as your idea. But I felt >> reasonably inconspicuous working SSB with cell-phone type earbuds >> (w/mic), and the KX2 in an open waist-pack, out in an open field of a >> large city park. People just thought I was on a phone call while flying >> the kite. It helped that there were several other kite-fliers in the >> park that day. >> >> It was not a particularly good day for propagation, but I did work Las >> Vegas and Spokane from Silicon Valley with under 10W on 20m. >> >> >> >> >> ------------------------------ >> >> Message: 22 >> Date: Tue, 22 Jan 2019 16:40:04 -0500 >> From: Michael Blake >> To: Mark Goldberg >> Cc: Elecraft Reflector , KX3 >> >> Subject: Re: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack >> loop antenna? >> Message-ID: <53CCB8BD-BFF8-46CC-83AC-0F0A12D89C88 at mac.com> >> Content-Type: text/plain; charset=us-ascii >> >> Mark (W7MLG), It is scary how perfectly sane and normal your suggestions sound to me :) >> >> Very 73 - Mike - K9JRI >> >> >> >> >> >> >> >>> On Jan 22, 2019, at 4:32 PM, Mark Goldberg wrote: >>> >>> I would expect any high Q antenna like a loop would be detuned by any >>> movement or any metal you pass by. One more reason to support automatic >>> mobile screwdriver / mag loop antenna tuning on the KX series. >>> A flag on a backpack would be more or less ignored. Just put a flag on the >>> top of the AX1. Counterpoise is an issue though. Maybe a short one down >>> your leg? >>> >>> Now, if you dressed as a homeless or otherwise distressed person, lots of >>> weird things are possible, tinfoil hat with a big flag, dragged wire >>> disguised as one of those fake animals on a leash, etc. The weirder, the >>> more people will ignore you. >>> >>> Hopefully taken in the spirit of which it is posted. >>> >>> 73, >>> >>> Mark >>> W7MLG >>> >>> >>> On Tue, Jan 22, 2019 at 1:57 PM Wayne Burdick n6kr at elecraft.com [KX3] < >>> KX3-noreply at yahoogroups.com> wrote: >>> >> >> >> >> ------------------------------ >> >> Message: 23 >> Date: Tue, 22 Jan 2019 15:41:14 -0600 >> From: K9MA >> To: elecraft at mailman.qth.net >> Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history >> of CW pitch-matching >> Message-ID: <089118fa-b031-7b6d-b2b6-c31ff6dda385 at sdellington.us> >> Content-Type: text/plain; charset=utf-8; format=flowed >> >>> On 1/22/2019 14:14, Bob McGraw K4TAX wrote: >>> Another trick which works well.?? Tune to a WWV frequency in CW mode. >>> Press SPOT and the radio will jump on the exact carrier frequency. >> >> You can do the same thing, of course, by listening to the beat between >> the sidetone and the carrier. I was able to get 3 Hz closer that way, >> within the 1 Hz tuning resolution. 3 Hz is close enough, though. >> >> When listening for the beats, you have to match the volume of the >> sidetone and carrier, or you won't hear them. You don't need a musical >> ear, just a functioning one. >> >> 73, >> >> Scott K9MA >> >> -- >> Scott K9MA >> >> k9ma at sdellington.us >> >> >> >> ------------------------------ >> >> _______________________________________________ >> Elecraft mailing list >> Post to: Elecraft at mailman.qth.net >> http://mailman.qth.net/mailman/listinfo/elecraft >> You must be a subscriber to post. >> Elecraft web page: http://www.elecraft.com >> >> End of Elecraft Digest, Vol 177, Issue 36 >> ***************************************** >> > > > > ------------------------------ > > Message: 10 > Date: Tue, 22 Jan 2019 17:26:41 -0600 > From: Robert Rennard > To: "elecraft at mailman.qth.net" > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: > Content-Type: text/plain; charset="utf-8" > > For N1MM, use the up and down arrow keys to get close in S&P operation and then press F11 to zero beat - > > F11 Z B,{CATA1ASC SWT42;} > > If it is a dense pile, a little XIT offset is a big help. > > 73, > > Bob R > > > ------------------------------ > > Message: 11 > Date: Tue, 22 Jan 2019 17:06:17 -0800 > From: Bill Frantz > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: > > > Content-Type: text/plain; charset=UTF-8; format=flowed > > I must admit, most of my CW tuning is done with the P3/SVGA and > getting the pitch "right" in my earphones. (With RTTY, I can get > very close to the correct pitch by ear. Then I used the crossed > loop tuning aid for the final few Hz.) > > 73 Bill AE6JV > > --------------------------------------------------------------------------- > Bill Frantz | "I wish there was a knob on the TV to turn > up the > 408-356-8506 | intelligence. There's a knob called > "brightness", but > www.pwpconsult.com | it doesn't work. -- Gallagher > > > > ------------------------------ > > Message: 12 > Date: Tue, 22 Jan 2019 17:17:03 -0800 > From: kevinr > To: elecraft at mailman.qth.net > Subject: Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop > antenna? > Message-ID: <9db6ea37-d5a6-ffdf-33ce-59a4795bfee7 at coho.net> > Content-Type: text/plain; charset=utf-8; format=flowed > > There may be other options.? A serpentine pattern fed at the center > could give you enough length for a 10 m or larger dipole. I've seen > serpentine F antennas on printed circuit boards.? I've also seen spiral > patterns used so I know they work to some extent. > > If a dipole cut for 14 MHz is ~ 400 inches long it would take 11 up and > down segments of 36" each to stuff it inside your pack. I'm sure the > serpentine factor will change the length needed but with a bit of > tweaking this could work. > > Or feed it at one end for a 40 meter monopole (a counterpoise could be > woven into the pack). > > ?? 73 & GL, > > ?????? Kevin.? KD5ONS > > - > > >> On 1/22/19 12:57 PM, Wayne Burdick wrote: >> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. >> >> So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. >> >> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. >> >> Any other antenna suggestions? >> >> Wayne >> N6KR >> >> >> >> ---- >> elecraft.com >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to kevinr at coho.net > > > ------------------------------ > > Message: 13 > Date: Tue, 22 Jan 2019 17:19:52 -0800 > From: Joan > To: Wayne Burdick > Cc: Elecraft Reflector , > "KX3 at yahoogroups.com" > Subject: Re: [Elecraft] Auto-spot, tuning aids, and the arcane history > of CW pitch-matching > Message-ID: <2D8BAE14-EACC-4C2B-B053-1379BDF9B4DB at me.com> > Content-Type: text/plain; charset=utf-8 > > Thanks, Wayne! This is one of the best entries into these threads I?ve ever read. And, yes, I've experimented with Auto Spot in CWT mode. > > And: > ?the Audio Peaking Filter (APF), ?provides a 30-Hz bandwidth at -3 dB, but broad skirts, preventing ringing from occurring. As our customers will attest, APF works like magic on weak signals obscured by noise?? To which I also attest! ^_^ > > And, the VFO and IF passband tracking exactly on the user setable CW sidetone (A 440, in my case) is one of the main things which made me fall in love with Elecraft. > > 72 de KX2CW .. > ~Joan > > Darmok and Jalad at Tanagra, said Piglet. > Shaka, when the walls fell, said Pooh. > >> On Jan 21, 2019, at 21:09, Wayne Burdick wrote: >> >> Elecraft's auto-spot and CWT features -- available on the K3/K3S/KX2/KX3 -- are very useful tools for CW operators, especially those not experienced in pitch-matching. Here's a bit of history on where these features came from and how they work. >> >> >> CW Spotting History >> >> When a station finishes a CQ in CW mode, the operator faces the challenge of copying someone who's calling back. Callers may be weak or obscured by QRM; the op can usually deal with both problems by narrowing the filter passband. However, callers may also be off frequency. A calling station may be using a wide filter passband themselves, not attempting to carefully match their VFO frequency to that of the CQing station. The result may be no QSO, even when propagation is excellent. >> >> In the Days of Yore, a frequency offset between stations didn't always matter. Sometimes both stations used crystal-controlled transmitters, so operators had to patient tune around after calling CQ. >> >> As a 14-year-old novice I embraced this operating style for a year or so, armed with a dozen or so crusty FT-243 crystals for my Heath HW-16. I nearly wore out the socket swapping them in and out. After calling CQ, it was not unusual to find a caller 30 or more kHz away! (Away from "where" was a poorly answered question, as my Hallicrafters receiver dial wasn't exactly digital.) >> >> Fortunately I soon acquired an outboard VFO, a life-changing addition to my station. Jealous friends doubled up on their paper routes to pay for their own. Girls suddenly paid more attention to me. >> >> These days virtually everyone has a VFO, along with the expectation that they won't have to tune theirs very far, if at all, to tune you in. Not only that, they're stable and well calibrated, not like the beasts we had to skillfully tame. Progress! >> >> >> Manual Spotting (SPOT switch) >> >> Once I had a VFO I quickly learned to do *manual* pitch matching. Older rigs did't provide a way to do that explicitly, so you'd improvise. Basically, you had to coerce a very weak signal out of your own transmitter, say by turning on only the driver, then tune the transmit VFO until you could hear your signal on your own receiver -- superimposed on the calling station, at the same pitch. This is what we call spotting. >> >> Of course spotting is a lot more convenient these days, as many rigs include a SPOT switch. This function is easy for a modern transceiver designer to add, because the radio's firmware is quite capable of turning on only the CW sidetone without transmitting. >> >> That is the purpose of the SPOT switch on all Elecraft transceivers. Tap SPOT, and you'll hear your sidetone pitch. Most people can do a good job of adjusting the VFO such that the CQing station's pitch matches that of the SPOT tone. This ensures that when you call them, you'll be close to their own frequency. >> >> >> Tuning Aids: Filtering (APF), PLL (NE567), and Spectral (CWT) >> >> Since not everyone has an inherent musical ear, various hardware-enhanced means of tuning in CW signals have been developed. >> >> The simplest method is to just narrow your receiver passband so much that, if you can hear a station calling CQ at all, you're guaranteed to be "right on top of him." This assumes that your transceiver enforces alignment between its transmit and receive pitch...true of all Elecraft gear. >> >> Narrow filtering has gone through decades of evolution. Some filters were based on op-amps (active filters), while others were based on LC filtering, conscripting humongous toroidal cores scavenged from telco equipment. I acquired my stash of these from a haphazard mound of old switching racks, decaying in an abandoned aircraft hanger on the Bermuda U.S. Navy base. (That irresistible junk pile was also a mother load of TO5 transistors, multi-pound electrolytic capacitors, and tetanus, but that's another story.) Typically the toroids were 88 millihenries -- a huge value for a high-Q inductor, permitting resonance in the low audio range. >> >> Later, such filters migrated to digital signal processing, in the form of switched-capacitor ICs or DSPs. You can still buy these switched-capacitor chips, like the MF10, from various sources. It's instructive to roll your own tunable filter, just for fun. >> >> Whether passive or active, the goal of filtering is typically to achieve a narrow passband, say 250 Hz or less. With DSP, nearly perfect filters with "brick wall" passbands can be created. But these have the disadvantage of ringing like a bell when pinged by a CW signal or noise, making copy difficult. >> >> One solution incorporated into the K-line and KX-line is the Audio Peaking Filter (APF), which provides a 30-Hz bandwidth at -3 dB, but broad skirts, preventing ringing from occurring. As our customers will attest, APF works like magic on weak signals obscured by noise. >> >> Another forerunner to DSP techniques was the audio phase-locked-loop, using inexpensive ICs like the legendary LM567. When locked on a signal that matched its center frequency, the circuit would turn on an LED, alerting the operator that the VFO was now properly tuned. >> >> With the DSPs in our K-line and KX-line radios, we can provide a much more powerful tool: CWT, or "CW Tuning Aid." When enabled, CWT turns the upper portion of the rig's S-meter into something of a mini spectrum analyzer. The pitch of the strongest signal in the passband is analyzed by the DSP, then represented as a single segment of the bar graph. For CWT-enhanced manual spotting, the operator simply tunes the VFO slowly until the center CWT segment is flashing along with the keyed signal. >> >> Manual tuning with CWT can also be used in FSK-D and PSK-D modes as described in the owner's manual. >> >> >> Closing the Loop: Auto-Spotting (SPOT + CWT) >> >> The Elecraft K3/K3S/KX2/KX3 take CW tuning another step forward by providing a way to *automatically* retune the VFO frequency to match that of a received signal. How does this work? >> >> When CWT is turned on, firmware treats the SPOT switch as AUTO-SPOT. The DSP analyzes the incoming signal, and with a bit of processing, determines its exact audio pitch. From there all that's needed is a bit of math to offset the VFO to match this pitch to the CW sidetone. >> >> There's another subtlety, though. Since a CW signal is generally being keyed on and off, the CWT algorithm has to ensure that it doesn't "take off," chasing a signal that's not there. To avoid this, we keep track of the energy in the passband, and slew the VFO incrementally over an average of about 0.5 second, moving only when the target signal is present. >> >> >> How to Use Auto-Spot >> >> I encourage you to give the auto-spot feature a try. It's best to start with a fairly narrow passband, say 400-600 Hz; narrower if there's a lot of QRM. Find a signal, turn on CWT, then tap SPOT to tune it in. A second tap of SPOT may get even closer, especially if there's a lot of band noise. >> >> Auto-spot can also be used in Elecraft's PSK-D mode, i.e. for PSK31/PSK63. As with CW mode, just turn on CWT, tune in a prospective signal, and tap SPOT. Since PSK auto-decoding requires very accurate tuning, it's best to set the filter bandwidth to 50 Hz, then let auto-spot dial things in down to the last 2 or 3 Hz. If you have text decode turned on, you should start seeing text characters scroll by after auto-tuning has completed. Tapping a second time or fine-tuning the VFO a bit in 1 Hz steps may improve copy. >> >> 73, >> Wayne >> N6KR >> >> >> >> >> > > > ------------------------------ > > Message: 14 > Date: Tue, 22 Jan 2019 19:51:01 -0600 > From: Michael Chowning > To: Wayne Burdick > Cc: Elecraft , KX3 > Subject: Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop > antenna? > Message-ID: > Content-Type: text/plain; charset=utf-8 > > Just for grins, look into this link, from Ohio State University from back in 2011! > https://news.osu.edu/antennas-in-your-clothes--new-design-could-pave-the-way/ > There are also articles more recently (2018) on electronics in one?s clothes, and computers in one?s clothes in this website?s news as well. > Mike, N8TTR > >> On Jan 22, 2019, at 2:57 PM, Wayne Burdick wrote: >> >> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. >> >> So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. >> >> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. >> >> Any other antenna suggestions? >> >> Wayne >> N6KR >> >> >> >> ---- >> elecraft.com >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to mike.chowning at mgccc.org > > > > ------------------------------ > > _______________________________________________ > Elecraft mailing list > Post to: Elecraft at mailman.qth.net > http://mailman.qth.net/mailman/listinfo/elecraft > You must be a subscriber to post. > Elecraft web page: http://www.elecraft.com > > End of Elecraft Digest, Vol 177, Issue 37 > ***************************************** From wb6rse1 at mac.com Tue Jan 22 22:37:53 2019 From: wb6rse1 at mac.com (wb6rse1 at mac.com) Date: Tue, 22 Jan 2019 19:37:53 -0800 Subject: [Elecraft] 2019 Visalia Top Band Dinner Message-ID: Announcing the Top Band Dinner at the 2019 Visalia International DX Convention. Buffet Dinner. Pre-Assigned seating. Door Prizes. $42/person. Program: "Snapshot: VK9XG to North America on 160m," Chris Duckling, G3SVL and "KH1/KH7Z Top Band From Baker Island" George Wallner, AA7JV For the most up to date information and to register see: http://topbanddinner.jimdo.com/ 73 - Steve WB6RSE From k9yeq at live.com Tue Jan 22 22:43:06 2019 From: k9yeq at live.com (Bill Johnson) Date: Wed, 23 Jan 2019 03:43:06 +0000 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> Message-ID: The back pack frame would be the antenna? Low power is the game. I am not concerned. In the Vietnam era, I was in a station where we had ~5 10KW transmitters using wave guide at ~1.9Ghz and while there were very large dishes, the exposure was there. I would never worry about HF at 10 watts close to my body, but there may be studies that dispute that. I am still alive after 12 months constant exposure to agent orange. No problem. What was I writing about? :_) (Emoji added in case the sarcasm was missed.) 73, Bill K9YEQ https://wrj-tech.com/ -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Wayne Burdick Sent: Tuesday, January 22, 2019 2:57 PM To: Elecraft Cc: KX3 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. Any other antenna suggestions? Wayne N6KR ---- elecraft.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com From n6kr at elecraft.com Tue Jan 22 22:56:46 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Tue, 22 Jan 2019 19:56:46 -0800 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> Message-ID: Thanks for the amazing response and great ideas. If someone wants to build a backpack loop antenna for 20 m sooner than I can, I promise to extensively field test it for you. If it works, it could become an Elecraft product. (AL1? :) The KXIO2 option for the KX2 includes two open-drain outputs that could be used to slew a C-tuning motor up and down with suitable buffering. I?ll write the code for that if/when it?s needed. Wayne N6KR ---- elecraft.com > On Jan 22, 2019, at 7:43 PM, Bill Johnson wrote: > > The back pack frame would be the antenna? Low power is the game. I am not concerned. In the Vietnam era, I was in a station where we had ~5 10KW transmitters using wave guide at ~1.9Ghz and while there were very large dishes, the exposure was there. I would never worry about HF at 10 watts close to my body, but there may be studies that dispute that. I am still alive after 12 months constant exposure to agent orange. No problem. What was I writing about? :_) > > (Emoji added in case the sarcasm was missed.) > > 73, > Bill > K9YEQ > > https://wrj-tech.com/ > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net On Behalf Of Wayne Burdick > Sent: Tuesday, January 22, 2019 2:57 PM > To: Elecraft > Cc: KX3 > Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? > > I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. > > So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. > > The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. > > Any other antenna suggestions? > > Wayne > N6KR > > > > ---- > elecraft.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com From xdavid at cis-broadband.com Wed Jan 23 00:04:10 2019 From: xdavid at cis-broadband.com (David Gilbert) Date: Tue, 22 Jan 2019 22:04:10 -0700 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <9db6ea37-d5a6-ffdf-33ce-59a4795bfee7@coho.net> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> <9db6ea37-d5a6-ffdf-33ce-59a4795bfee7@coho.net> Message-ID: <44511bad-e878-85e2-5d1b-984726bb4c30@cis-broadband.com> Here's another idea. Run a wire inside your shirt from one cuff across your back and down to the other cuff.? Wrap loading coils around each arm just above the elbow.? Feed the "dipole" in the center at the back of your neck. I did a quick model (assuming your arms are held straight out) with 5.5 feet total length and 2200 inductive ohms for each coil, with each coil 30% from their respective ends of the wire.? It "resonates" at around 14.15 MHz, but with only about 0.4 ohms real feedpoint impedance.? I assume it would take some sort of extra matching network to bring that up enough that a KX2 with the internal tuner could drive it. Ignoring the effect of a person's arm, another quick calculation says that the arm coils would need to be roughly 11 turns of 10 gauge wire 3.5 inches in diameter ... unless I made a mistake, which is quite possible. It would bring new meaning to the term "compromise antenna", but I bet it would be more effective than a super small loop the size of backpack frame. 73, Dave? AB7E > > > On 1/22/19 12:57 PM, Wayne Burdick wrote: >> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, >> AX1 antenna and a dragged counterpoise. In wide open spaces it?s a >> blast. But urban settings with dogs, wire-eating cacti and >> overzealous Neighborhood Watchers can distract from one?s radio >> experience. >> >> So, just for grins, I?d like to try something completely incognerdo: >> no visible antenna. A small remotely tuned loop (say 12? diameter) >> would seem to be the best choice, as it would fit entirely inside a >> small backpack. It could have? modest efficiency while not requiring >> a counterpoise wire. Rigid 1? copper pipe formed in a square would be >> convenient to deploy. >> >> The loop would be only 6 to 8? from soft tissue, so you?d want to run >> QRP, of course.? OTOH, we?re talking about HF. A cellphone by your >> ear is probably worse. >> >> Any other antenna suggestions? >> >> Wayne >> N6KR From n6kr at elecraft.com Wed Jan 23 00:11:33 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Tue, 22 Jan 2019 21:11:33 -0800 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <44511bad-e878-85e2-5d1b-984726bb4c30@cis-broadband.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> <9db6ea37-d5a6-ffdf-33ce-59a4795bfee7@coho.net> <44511bad-e878-85e2-5d1b-984726bb4c30@cis-broadband.com> Message-ID: <55404023-34AA-4592-967E-8263B4A966EA@elecraft.com> Up the power to 100 W and you?ve got a personal heating appliance. Awesome. ?Without RF, life itself would be impossible.? Wayne ---- elecraft.com > On Jan 22, 2019, at 9:04 PM, David Gilbert wrote: > > > > Here's another idea. > > Run a wire inside your shirt from one cuff across your back and down to the other cuff. Wrap loading coils around each arm just above the elbow. Feed the "dipole" in the center at the back of your neck. > > I did a quick model (assuming your arms are held straight out) with 5.5 feet total length and 2200 inductive ohms for each coil, with each coil 30% from their respective ends of the wire. It "resonates" at around 14.15 MHz, but with only about 0.4 ohms real feedpoint impedance. I assume it would take some sort of extra matching network to bring that up enough that a KX2 with the internal tuner could drive it. > > Ignoring the effect of a person's arm, another quick calculation says that the arm coils would need to be roughly 11 turns of 10 gauge wire 3.5 inches in diameter ... unless I made a mistake, which is quite possible. > > It would bring new meaning to the term "compromise antenna", but I bet it would be more effective than a super small loop the size of backpack frame. > > 73, > Dave AB7E > > > >> >> >>> On 1/22/19 12:57 PM, Wayne Burdick wrote: >>> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. >>> >>> So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. >>> >>> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. >>> >>> Any other antenna suggestions? >>> >>> Wayne >>> N6KR > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to n6kr at elecraft.com From neilz at techie.com Wed Jan 23 00:33:36 2019 From: neilz at techie.com (Neil Zampella) Date: Wed, 23 Jan 2019 00:33:36 -0500 Subject: [Elecraft] K2 VCO Alignment T5 L30 In-Reply-To: References: <1dd2638b-1253-b013-fbc4-2b311a2725e4@embarqmail.com> Message-ID: <121b0aaa-aca6-e5e0-e82d-00e9e1d8421e@techie.com> Tom, welcome to the club.?? I think anyone who has put together a K2 has such stories.?? In my case I had installed U4 backwards and did not notice it as the chip has a very pronounced 'dimple' on one end which (for some reason) made me overlook the notch on the other end.??? I spent a week trying to figure out the problem poring over the troubleshooting steps, emails to Don, and magnified visual checks against the part location diagrams.? I never did see that error and sent the rig to Elecraft, where it was noticed and replaced. 73, Neil, KN3ILZ On 1/22/2019 9:57 PM, K2bew wrote: > Don Et Al, > So, It is with some embarrassment, and much relief, that I can report it > was operator error and my BFO is now working perfectly. > I got home from work and was getting ready to do some continuity checks to > all the circuits surrounding and including U11, but decided I better check > all the components again in that section with the RF board disconnected and > out of the case. > I found much to my chagrin I had not installed D37 and D38! I had them > checked off in the manual as being installed, and I even wrote in pencil in > the margin on the next step where you put the rest of the V149's in the RF > board that I had 2 left over, but I failed to notice I had them left over > because I did not put them in the step before!, good grief. > Anyway I have a high BFO reading of 4917.60 and a low reading of 4911.98 > with a difference of 5.62. > Thank you Don and to others that gave suggestions, and I do wish those > having similar problems well in their trouble shooting. > > Upward and onward 73, > Tom Bewick, K2BEW > > > On Sun, Jan 20, 2019 at 8:22 AM Don Wilhelm wrote: > >> Tom, >> >> Good work on the VFO. >> Before you replace U11, measure the resistance from the wire on the >> carrier board to the lead of the SMD IC. Do that for all pins. The PC >> traces on the carrier board are not thru-plated holes and sometimes >> become damaged with soldering. >> >> 73, >> Don W3FPR >> >> On 1/19/2019 6:35 PM, K2bew wrote: >>> Don et al, >>> >>> I tried a 15pf cap ( what I had on hand) at the source of Q19 to >>> ground and I got .025v on R30 that did not change with the adjustment >>> of L30, essentially no voltage. >>> So, I took it off and it went back to 4.5 volts. So, then I tried >>> Vicen?, EA3ADV's suggestion and I put 17 turns on the red wire of T5. >>> That got me a voltage of 8.5V on R30 with L30 bottomed out that I >>> was able to easily back off to a stable 6 volts. >>> I went ahead and did the voltage tests on the other bands and had a >>> nice range of 1.844 to 6 volts as my low and high on the VCO. >>> So, that's all set. >>> >>> However, new problem. I went on to the test the BFO and I have 0000.04 >>> kHz. on TP2, so it's not working. >>> I went to the trouble shooting guide and I have 0.058 Vrms on pin 6 of >>> U11 with the RF probe. >>> Looking at the archives of the reflector that would indicate that U11 >>> is bad and I need a replacement, correct? or are there other things I >>> should look at first? >>> The good thing is I'm becoming very accustomed to the radio and >>> enjoying the trouble shooting. >>> Thanks for all the help, I really appreciate it. >>> >>> 73, >>> Tom Bewick, K2BEW >>> >> --- This email has been checked for viruses by AVG. https://www.avg.com From wes_n7ws at triconet.org Wed Jan 23 00:59:35 2019 From: wes_n7ws at triconet.org (Wes) Date: Tue, 22 Jan 2019 22:59:35 -0700 Subject: [Elecraft] Urban Stealth In-Reply-To: References: Message-ID: <19cc74ef-ab47-380a-22ff-98ad9e0d42d1@triconet.org> This thread brings back memories of an antenna I once used mobile for a weekend.? I was headed to a hamfest in Phoenix from Tucson back when two-meter AM was still in vogue.? Should give you and idea of time-frame.? I owned a Heathkit "Twoer" and a 1956 Corvette (wish I had this back---the car---not the Heathkit). In those days BC stations still used "transcription discs" that could be obtained if you knew the right person at a station. These were 16" diameter aluminum discs, normally covered in lacquer that when stripped yielded a beautiful 2-meter ground plane.? In the C1 Corvette the soft top was folded and stowed under a hinged hatch behind the seats.? When it was up, a couple of toggle clamps secured the rear of the soft top, to the hatch. These clamps created a hole in the hatch through which the vertical whip could be passed.? So the hatch could be opened, the disc placed in the storage compartment with the whip sticking through the hatch after it was closed.? All of this was fiberglass so the antenna was mounted "in the clear" albeit pretty close to ground. With this rig, sitting in a friend's driveway in Tempe, I was able to work another friend back in Tucson over a path once described in QST's "World above 50 Mc" as "difficult." Wes? N7WS From hs0zed at gmail.com Wed Jan 23 02:26:00 2019 From: hs0zed at gmail.com (Martin Sole) Date: Wed, 23 Jan 2019 15:26:00 +0800 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <55404023-34AA-4592-967E-8263B4A966EA@elecraft.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> <9db6ea37-d5a6-ffdf-33ce-59a4795bfee7@coho.net> <44511bad-e878-85e2-5d1b-984726bb4c30@cis-broadband.com> <55404023-34AA-4592-967E-8263B4A966EA@elecraft.com> Message-ID: Hook it up to your KPA1500 and you've got whole house illumination! Martin, HS0ZED On 23/01/2019 13:11, Wayne Burdick wrote: > Up the power to 100 W and you?ve got a personal heating appliance. Awesome. > > ?Without RF, life itself would be impossible.? > > Wayne > > > ---- > elecraft.com > >> On Jan 22, 2019, at 9:04 PM, David Gilbert wrote: >> >> >> >> Here's another idea. >> >> Run a wire inside your shirt from one cuff across your back and down to the other cuff. Wrap loading coils around each arm just above the elbow. Feed the "dipole" in the center at the back of your neck. >> >> I did a quick model (assuming your arms are held straight out) with 5.5 feet total length and 2200 inductive ohms for each coil, with each coil 30% from their respective ends of the wire. It "resonates" at around 14.15 MHz, but with only about 0.4 ohms real feedpoint impedance. I assume it would take some sort of extra matching network to bring that up enough that a KX2 with the internal tuner could drive it. >> >> Ignoring the effect of a person's arm, another quick calculation says that the arm coils would need to be roughly 11 turns of 10 gauge wire 3.5 inches in diameter ... unless I made a mistake, which is quite possible. >> >> It would bring new meaning to the term "compromise antenna", but I bet it would be more effective than a super small loop the size of backpack frame. >> >> 73, >> Dave AB7E >> >> >> >>> >>>> On 1/22/19 12:57 PM, Wayne Burdick wrote: >>>> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. >>>> >>>> So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. >>>> >>>> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. >>>> >>>> Any other antenna suggestions? >>>> >>>> Wayne >>>> N6KR >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to n6kr at elecraft.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to hs0zed at gmail.com From W2xj at w2xj.net Wed Jan 23 05:17:15 2019 From: W2xj at w2xj.net (W2xj) Date: Wed, 23 Jan 2019 05:17:15 -0500 Subject: [Elecraft] [KX3] Re: Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> Message-ID: <23EC9A37-F308-434A-9248-03E12BF73E9B@w2xj.net> The problem I see is Uncontrolled contents of backpack detuning the loop. Sent from my iPad > On Jan 22, 2019, at 10:56 PM, Wayne Burdick n6kr at elecraft.com [KX3] wrote: > > Thanks for the amazing response and great ideas. > > If someone wants to build a backpack loop antenna for 20 m sooner than I can, I promise to extensively field test it for you. If it works, it could become an Elecraft product. (AL1? :) > > The KXIO2 option for the KX2 includes two open-drain outputs that could be used to slew a C-tuning motor up and down with suitable buffering. I?ll write the code for that if/when it?s needed. > > Wayne > N6KR > > ---- > elecraft.com > >> On Jan 22, 2019, at 7:43 PM, Bill Johnson wrote: >> >> The back pack frame would be the antenna? Low power is the game. I am not concerned. In the Vietnam era, I was in a station where we had ~5 10KW transmitters using wave guide at ~1.9Ghz and while there were very large dishes, the exposure was there. I would never worry about HF at 10 watts close to my body, but there may be studies that dispute that. I am still alive after 12 months constant exposure to agent orange. No problem. What was I writing about? :_) >> >> (Emoji added in case the sarcasm was missed.) >> >> 73, >> Bill >> K9YEQ >> >> https://wrj-tech.com/ >> >> -----Original Message----- >> From: elecraft-bounces at mailman.qth.net On Behalf Of Wayne Burdick >> Sent: Tuesday, January 22, 2019 2:57 PM >> To: Elecraft >> Cc: KX3 >> Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? >> >> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. >> >> So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. >> >> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. >> >> Any other antenna suggestions? >> >> Wayne >> N6KR >> >> >> >> ---- >> elecraft.com >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com > > __._,_.___ > Posted by: Wayne Burdick > Reply via web post ? Reply to sender ? Reply to group ? Start a New Topic ? Messages in this topic (1) > > Have you tried the highest rated email app? > With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage. > VISIT YOUR GROUP > ? Privacy ? Unsubscribe ? Terms of Use > > SPONSORED LINKS > > > > . > > > __,_._,___ From ny9h at arrl.net Wed Jan 23 09:46:44 2019 From: ny9h at arrl.net (Bill Steffey) Date: Wed, 23 Jan 2019 09:46:44 -0500 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> Message-ID: how about code to run a screwdriver ????antenna that is. I use my k2 /kxpa100 in my VW screwdriver up on the roof rack,..... woeks great but could be elecraftmatic !!!! On 1/22/2019 10:56 PM, Wayne Burdick wrote: > Thanks for the amazing response and great ideas. > > If someone wants to build a backpack loop antenna for 20 m sooner than I can, I promise to extensively field test it for you. If it works, it could become an Elecraft product. (AL1? :) > > The KXIO2 option for the KX2 includes two open-drain outputs that could be used to slew a C-tuning motor up and down with suitable buffering. I?ll write the code for that if/when it?s needed. > > Wayne > N6KR > > ---- > elecraft.com > >> On Jan 22, 2019, at 7:43 PM, Bill Johnson wrote: >> >> The back pack frame would be the antenna? Low power is the game. I am not concerned. In the Vietnam era, I was in a station where we had ~5 10KW transmitters using wave guide at ~1.9Ghz and while there were very large dishes, the exposure was there. I would never worry about HF at 10 watts close to my body, but there may be studies that dispute that. I am still alive after 12 months constant exposure to agent orange. No problem. What was I writing about? :_) >> >> (Emoji added in case the sarcasm was missed.) >> >> 73, >> Bill >> K9YEQ >> >> https://wrj-tech.com/ >> >> -----Original Message----- >> From: elecraft-bounces at mailman.qth.net On Behalf Of Wayne Burdick >> Sent: Tuesday, January 22, 2019 2:57 PM >> To: Elecraft >> Cc: KX3 >> Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? >> >> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. >> >> So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. >> >> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. >> >> Any other antenna suggestions? >> >> Wayne >> N6KR >> >> >> >> ---- >> elecraft.com >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to ny9h at arrl.net > From kd4iz at frawg.org Wed Jan 23 10:38:59 2019 From: kd4iz at frawg.org (kd4iz at frawg.org) Date: Wed, 23 Jan 2019 10:38:59 -0500 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <44511bad-e878-85e2-5d1b-984726bb4c30@cis-broadband.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> <9db6ea37-d5a6-ffdf-33ce-59a4795bfee7@coho.net> <44511bad-e878-85e2-5d1b-984726bb4c30@cis-broadband.com> Message-ID: <00c201d4b331$c3475b70$49d61250$@frawg.org> I love the AB7E concept... Looks an awful lot like birth of a new character for cosplay and a Comicon run to me: "EtherMan" - the RF belching steampunk simulacrum of an Isaac Asimov automaton! A little work with the 3D printer, an RPi with a 7" display, and some burnished 10 gauge wire coil gauntlets, chest shield flip down mount for the KX2. Ah the possibilities! KA6LMS doesn't stand a chance. Anyone want to give it a go? Seriously now, has anyone looked at the rf field issues - ie the effect created by the position of the person (a 70% water, protein gel matrix) with the backpack on? KD4IZ Jack Spitznagel FM19oo -----Original Message----- From: David Gilbert Sent: Wednesday, January 23, 2019 00:04 To: elecraft at mailman.qth.net Subject: Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? Here's another idea. Run a wire inside your shirt from one cuff across your back and down to the other cuff. Wrap loading coils around each arm just above the elbow. Feed the "dipole" in the center at the back of your neck. I did a quick model (assuming your arms are held straight out) with 5.5 feet total length and 2200 inductive ohms for each coil, with each coil 30% from their respective ends of the wire. It "resonates" at around 14.15 MHz, but with only about 0.4 ohms real feedpoint impedance. I assume it would take some sort of extra matching network to bring that up enough that a KX2 with the internal tuner could drive it. Ignoring the effect of a person's arm, another quick calculation says that the arm coils would need to be roughly 11 turns of 10 gauge wire 3.5 inches in diameter ... unless I made a mistake, which is quite possible. It would bring new meaning to the term "compromise antenna", but I bet it would be more effective than a super small loop the size of backpack frame. 73, Dave AB7E > > > On 1/22/19 12:57 PM, Wayne Burdick wrote: >> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, >> AX1 antenna and a dragged counterpoise. In wide open spaces it?s a >> blast. But urban settings with dogs, wire-eating cacti and >> overzealous Neighborhood Watchers can distract from one?s radio >> experience. >> >> So, just for grins, I?d like to try something completely incognerdo: >> no visible antenna. A small remotely tuned loop (say 12? diameter) >> would seem to be the best choice, as it would fit entirely inside a >> small backpack. It could have modest efficiency while not requiring >> a counterpoise wire. Rigid 1? copper pipe formed in a square would be >> convenient to deploy. >> >> The loop would be only 6 to 8? from soft tissue, so you?d want to run >> QRP, of course. OTOH, we?re talking about HF. A cellphone by your >> ear is probably worse. >> >> Any other antenna suggestions? >> >> Wayne >> N6KR From ed.n3cw at gmail.com Wed Jan 23 10:41:18 2019 From: ed.n3cw at gmail.com (Ed G) Date: Wed, 23 Jan 2019 10:41:18 -0500 Subject: [Elecraft] K3 KAT3 High SWR Issue Solved In-Reply-To: References: Message-ID: <5c488b1e.1c69fb81.22a4e.d813@mx.google.com> I recently posted about a K3 40 meter SWR anomaly, where the K3 SWR reading on the front panel meter tended to increase as I tuned up higher in the band. I first observed the problem while using my Steppir yagi, which retunes itself so that I should have seen a low SWR across the entire 40 meter band. I saw a 3:1 SWR on the K3 meter at the high end of 40 meters, while at the same time I was reading a much lower SWR on my inline LP-100A. Further investigation showed that this situation also occurred when transmitting into a known-good dummy load. I was seeing about 1.1:1 at 7.001 MHz, and this rose to 3:1 at 7.299 MHz. When the high SWR was being sensed by the K3, output power was also being folded back. For example, I would have about 36 watts output when the K3 was set to 50 watts at 7.299 MHz. This anomaly also affected 40 meter operation with the KPA1500, as I observed what appeared to be power overshoot and experienced the need to frequently readjust drive power on 40 meters. A fair amount of digging in the email archives found a couple posts which touched on an issue with the 8.215 MHz trap (C10 and L10) on the KAT3 tuner board. Keith WE6R at Elecraft then suggested removing C10 and L10, and adding a shorting wire in place of L10. This mod does indeed appear to fix the false SWR issue ? at least it did in my K3. I now have flat 1.1:1 SWR readings into a dummy load on 40 meters at all power levels. The trap is not included in the design of the KAT3A, so K3S rigs with the KAT3A should not see this SWR problem. Any K3 users who have retrofitted the KAT3A tuner into their K3 should not see this anomaly. The problematic trap, from comments by Keith, may be due to some lots of capacitors which for reasons unknown to me have a high failure rate. It may be prudent for K3 owners with the KAT3 tuner board (S/Ns under 10,000 or vicinity) to check SWR readings on 40 meters using a dummy load to ascertain whether they need to apply the KAT3 trap fix. How to check your K3: Although I do not know how many KAT3 tuners are affected by the trap issue, I do feel it is the kind of problem that some users may have but just have not noticed. It is fairly easy to check for; just connect the K3 to a dummy load and observe the SWR as shown on the K3 meter at several random frequencies across the 40 meter band. Of course (assuming a stable 50 ohm dummy load) you should see a fairly flat 1:1 or near to it. But if the SWR rises as you approach 7.3 MHz, and you are using the older KAT3 tuner board, you most likely have the trap problem. Upon visual inspection, you may see evidence of burning on the trap components. Although my trap components looked fine, I apparently had some internal failure in C10. The faulty trap may also exist in the older KANT3 module (the trap parts would have different part designations) but I don?t have a KANT3 and have not researched this enough to comment further. Trap fix: As Keith suggested, remove C10 and L10 on the KAT3 board, and install a jumper where L10 was. I cut out C10, and also cut the leads on L10 while leaving enough length to strip some enamel coating and solder the leads together, thereby creating the jumper. To remove the KAT3 board, use proper wrist strap procedures. First remove the K3 top cover and one rear panel corner screw near the ANT connectors on the rear panel, and unplug the coax from ANT1 and ANT 2 connectors going to the KAT3 board. The KAT3 board can then be carefully pulled out for the trap mod. I did not have to remove the subreceiver or the K3 side panel. Results: For me, I now have a flat SWR reading across the 40 meter band when using the K3 internal SWR meter. Power output is now stable and fixed with no foldback, and I am not experiencing any KPA1500 drive faults. Thanks to Keith at Elecraft for his assistance on this issue. Please correct me Keith if I have not documented this issue accurately. --Ed, N3CW-- Sent from Mail for Windows 10 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus From k9ma at sdellington.us Wed Jan 23 10:49:11 2019 From: k9ma at sdellington.us (K9MA) Date: Wed, 23 Jan 2019 09:49:11 -0600 Subject: [Elecraft] K3 KAT3 High SWR Issue Solved In-Reply-To: <5c488b1e.1c69fb81.22a4e.d813@mx.google.com> References: <5c488b1e.1c69fb81.22a4e.d813@mx.google.com> Message-ID: <6ed13354-b2f5-2c1d-df52-90627a2f5a24@sdellington.us> On 1/23/2019 09:41, Ed G wrote: > A fair amount of digging in the email archives found a couple posts which touched on an issue with the 8.215 MHz trap (C10 and L10) on the KAT3 tuner board. Although my older K3 doesn't seem to have a problem, I wonder why that trap was not required in the KAT3A. It was there, presumably to improve IF rejection, so I'd expect removing it without some other change to the K3 would be unwise. 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us From merv.k9fd at gmail.com Wed Jan 23 10:55:30 2019 From: merv.k9fd at gmail.com (K9FD) Date: Wed, 23 Jan 2019 05:55:30 -1000 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <55404023-34AA-4592-967E-8263B4A966EA@elecraft.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> <9db6ea37-d5a6-ffdf-33ce-59a4795bfee7@coho.net> <44511bad-e878-85e2-5d1b-984726bb4c30@cis-broadband.com> <55404023-34AA-4592-967E-8263B4A966EA@elecraft.com> Message-ID: <379874ec-1567-4ca9-5c18-3003e6fb72bb@gmail.com> Years back QST had an article that showed a home made 2 meter "filter" made in a garbage can,?? they ran low power and placed a hot dog inside,? closed the lid and applied RF,?? the hot dog was BBQed in short order, Perhaps with QRP one could put a sandwhich in one pocket and coffee in another and while hiking to your destination you would have hot food and drink when you arrived. Not saying what may happen to the wienie of the person hiking. Your mileage may vary as they say,? at least you wont have kids to tell the story to. Merv K9FD > Up the power to 100 W and you?ve got a personal heating appliance. Awesome. > > ?Without RF, life itself would be impossible.? > > Wayne > > > ---- > elecraft.com > >> On Jan 22, 2019, at 9:04 PM, David Gilbert wrote: >> >> >> >> Here's another idea. >> >> Run a wire inside your shirt from one cuff across your back and down to the other cuff. Wrap loading coils around each arm just above the elbow. Feed the "dipole" in the center at the back of your neck. >> >> I did a quick model (assuming your arms are held straight out) with 5.5 feet total length and 2200 inductive ohms for each coil, with each coil 30% from their respective ends of the wire. It "resonates" at around 14.15 MHz, but with only about 0.4 ohms real feedpoint impedance. I assume it would take some sort of extra matching network to bring that up enough that a KX2 with the internal tuner could drive it. >> >> Ignoring the effect of a person's arm, another quick calculation says that the arm coils would need to be roughly 11 turns of 10 gauge wire 3.5 inches in diameter ... unless I made a mistake, which is quite possible. >> >> It would bring new meaning to the term "compromise antenna", but I bet it would be more effective than a super small loop the size of backpack frame. >> >> 73, >> Dave AB7E >> >> >> >>> >>>> On 1/22/19 12:57 PM, Wayne Burdick wrote: >>>> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. >>>> >>>> So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. >>>> >>>> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. >>>> >>>> Any other antenna suggestions? >>>> >>>> Wayne >>>> N6KR >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to n6kr at elecraft.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to merv.k9fd at gmail.com From n6kr at elecraft.com Wed Jan 23 11:19:03 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Wed, 23 Jan 2019 08:19:03 -0800 Subject: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <019601d4b328$82fc8d00$88f5a700$@frontier.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> <019601d4b328$82fc8d00$88f5a700$@frontier.com> Message-ID: <13A53BA3-E52A-4ECF-95F5-505A9A8E6E21@elecraft.com> Wish I had time to build one of these myself! A few other things in the queue.... Wayne N6KR > On Jan 23, 2019, at 6:32 AM, 'Dale Parfitt' parinc1 at frontier.com [KX3] wrote: > > > HI Wolf, > > VK3YE could have done so much better from an efficiency standpoint without making the loop any larger. > > 1. Flat metal stock is not as efficient as round stock (of the same circumference) because current crowding at the edges of the rectangular stock makes it appear smaller in surface area. > > 2. A much lower D capacitor such as a dual gang air variable with the gangs in series (to avoid resistive losses in the bearings) or a butterfly would also have aided in higher efficiency. > > 3. Copper would have helped efficiency somewhat with its lower RF resistance and ability to be soldered versus mechanical connections, but that is partially offset by aluminum?s larger skin depth. Of course copper is heavier and more expensive, but in tube form the weight issue could be minimized.. > > > > Just some thoughts. Again, the VK1OD calculator allows one to make precise efficiency measurements so even small improvements can be measured. As an example, the difference in efficiency between using braided coax as the loop radiator versus hardline or copper tubing is readily apparent. For the same diameter loop and same conductor diameter, a narrower bandwidth means higher efficiency. > > > > Dale W4OP > > > > From: KX3 at yahoogroups.com [mailto:KX3 at yahoogroups.com] On Behalf Of 'Wolf Hoeller, OE7FTJ' wolf.oe7ftj at gmail..com [KX3] > Sent: Wednesday, January 23, 2019 4:57 AM > To: KX3 at yahoogroups.com > Subject: Fwd: [KX3] Urban stealth HF: Inside-the-backpack loop antenna? > > > > > > Wayne, > > > > a really good idea. > > Have a look at VK3YE's youtube channel for his experiment to put a loop antenna in (frame of) a notebook bag. https://www.youtube.com/watch?v=BC5lFbLqaeg > > > > Another good idea for a stealth antenna has the spain company Inac. Here is the suitcase with a loop inside the frame: https://www.inac-radio.com/MAK721PRO > > > > I would like the idea, to sit in an urban park with my backpack or similar on my knees and make some contacts. > > > > > Wolf, OE7FTJ > > Emergency Communications via Winlink Global Radio Email ?? > > > > > > > > Am Di., 22. Jan. 2019 um 21:57 Uhr schrieb Wayne Burdick n6kr at elecraft.com [KX3] : > >> >> >> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. >> >> >> >> So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. >> >> >> >> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. >> >> >> >> Any other antenna suggestions? >> >> >> >> Wayne >> >> N6KR >> >> >> >> >> > > > __._,_.___ > Posted by: "Dale Parfitt" > Reply via web post ? Reply to sender ? Reply to group ? Start a New Topic ? Messages in this topic (2) > > Have you tried the highest rated email app? > With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage. > VISIT YOUR GROUP > ? Privacy ? Unsubscribe ? Terms of Use > > SPONSORED LINKS > > > > . > > > __,_._,___ From egan.dennis88 at gmail.com Wed Jan 23 11:25:48 2019 From: egan.dennis88 at gmail.com (Dennis Egan) Date: Wed, 23 Jan 2019 11:25:48 -0500 Subject: [Elecraft] KPA1500 Operating Remotely Message-ID: Can someone assist me- off the reflector- with the different settings needed to operate the KPA1500 remotely? I have it operating behind a VPN, and I want to be able to operate it either via another computer at the location or via Ethernet from my residence. Thanks for your assistance. I can't find any help files available. Dennis W1UE From jim at jtmiller.com Wed Jan 23 11:28:50 2019 From: jim at jtmiller.com (Jim Miller) Date: Wed, 23 Jan 2019 11:28:50 -0500 Subject: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <13A53BA3-E52A-4ECF-95F5-505A9A8E6E21@elecraft.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> <019601d4b328$82fc8d00$88f5a700$@frontier.com> <13A53BA3-E52A-4ECF-95F5-505A9A8E6E21@elecraft.com> Message-ID: I assume that this "backpack frame antenna" wouldn't be actually used when being worn. The circulating currents in a Hi-Q loop result in strong RF fields along the loop axis which should be avoided in use. jim ab3cv On Wed, Jan 23, 2019 at 11:21 AM Wayne Burdick wrote: > Wish I had time to build one of these myself! A few other things in the > queue.... > > Wayne > N6KR > > > > On Jan 23, 2019, at 6:32 AM, 'Dale Parfitt' parinc1 at frontier.com [KX3] < > KX3-noreply at yahoogroups.com> wrote: > > > > > > HI Wolf, > > > > VK3YE could have done so much better from an efficiency standpoint > without making the loop any larger. > > > > 1. Flat metal stock is not as efficient as round stock (of the same > circumference) because current crowding at the edges of the rectangular > stock makes it appear smaller in surface area. > > > > 2. A much lower D capacitor such as a dual gang air variable with the > gangs in series (to avoid resistive losses in the bearings) or a butterfly > would also have aided in higher efficiency. > > > > 3. Copper would have helped efficiency somewhat with its lower RF > resistance and ability to be soldered versus mechanical connections, but > that is partially offset by aluminum?s larger skin depth. Of course copper > is heavier and more expensive, but in tube form the weight issue could be > minimized.. > > > > > > > > Just some thoughts. Again, the VK1OD calculator allows one to make > precise efficiency measurements so even small improvements can be > measured. As an example, the difference in efficiency between using > braided coax as the loop radiator versus hardline or copper tubing is > readily apparent. For the same diameter loop and same conductor diameter, a > narrower bandwidth means higher efficiency. > > > > > > > > Dale W4OP > > > > > > > > From: KX3 at yahoogroups.com [mailto:KX3 at yahoogroups.com] On Behalf Of > 'Wolf Hoeller, OE7FTJ' wolf.oe7ftj at gmail..com [KX3] > > Sent: Wednesday, January 23, 2019 4:57 AM > > To: KX3 at yahoogroups.com > > Subject: Fwd: [KX3] Urban stealth HF: Inside-the-backpack loop antenna? > > > > > > > > > > > > Wayne, > > > > > > > > a really good idea. > > > > Have a look at VK3YE's youtube channel for his experiment to put a loop > antenna in (frame of) a notebook bag. > https://www.youtube.com/watch?v=BC5lFbLqaeg > > > > > > > > Another good idea for a stealth antenna has the spain company Inac. Here > is the suitcase with a loop inside the frame: > https://www.inac-radio.com/MAK721PRO > > > > > > > > I would like the idea, to sit in an urban park with my backpack or > similar on my knees and make some contacts. > > > > > > > > > > Wolf, OE7FTJ > > > > Emergency Communications via Winlink Global Radio Email ?? > > > > > > > > > > > > > > > > Am Di., 22. Jan. 2019 um 21:57 Uhr schrieb Wayne Burdick > n6kr at elecraft.com [KX3] : > > > >> > >> > >> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 > antenna and a dragged counterpoise. In wide open spaces it?s a blast. But > urban settings with dogs, wire-eating cacti and overzealous Neighborhood > Watchers can distract from one?s radio experience. > >> > >> > >> > >> So, just for grins, I?d like to try something completely incognerdo: no > visible antenna. A small remotely tuned loop (say 12? diameter) would seem > to be the best choice, as it would fit entirely inside a small backpack. It > could have modest efficiency while not requiring a counterpoise wire. > Rigid 1? copper pipe formed in a square would be convenient to deploy. > >> > >> > >> > >> The loop would be only 6 to 8? from soft tissue, so you?d want to run > QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is > probably worse. > >> > >> > >> > >> Any other antenna suggestions? > >> > >> > >> > >> Wayne > >> > >> N6KR > >> > >> > >> > >> > >> > > > > > > __._,_.___ > > Posted by: "Dale Parfitt" > > Reply via web post ? Reply to sender ? Reply to > group ? Start a New Topic ? Messages in this topic (2) > > > > Have you tried the highest rated email app? > > With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email > app on the market. What are you waiting for? Now you can access all your > inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email > again with 1000GB of free cloud storage. > > VISIT YOUR GROUP > > ? Privacy ? Unsubscribe ? Terms of Use > > > > SPONSORED LINKS > > > > > > > > . > > > > > > __,_._,___ > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jim at jtmiller.com From n6kr at elecraft.com Wed Jan 23 11:34:40 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Wed, 23 Jan 2019 08:34:40 -0800 Subject: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> <019601d4b328$82fc8d00$88f5a700$@frontier.com> <13A53BA3-E52A-4ECF-95F5-505A9A8E6E21@elecraft.com> Message-ID: The entire purpose of the exercise is to be able to operate while walking. If the field is a potential health risk, power would have to be dropped accordingly. Wayne > On Jan 23, 2019, at 8:28 AM, Jim Miller wrote: > > I assume that this "backpack frame antenna" wouldn't be actually used when being worn. The circulating currents in a Hi-Q loop result in strong RF fields along the loop axis which should be avoided in use. > > jim ab3cv > > On Wed, Jan 23, 2019 at 11:21 AM Wayne Burdick wrote: > Wish I had time to build one of these myself! A few other things in the queue.... > > Wayne > N6KR > > > > On Jan 23, 2019, at 6:32 AM, 'Dale Parfitt' parinc1 at frontier.com [KX3] wrote: > > > > > > HI Wolf, > > > > VK3YE could have done so much better from an efficiency standpoint without making the loop any larger. > > > > 1. Flat metal stock is not as efficient as round stock (of the same circumference) because current crowding at the edges of the rectangular stock makes it appear smaller in surface area. > > > > 2. A much lower D capacitor such as a dual gang air variable with the gangs in series (to avoid resistive losses in the bearings) or a butterfly would also have aided in higher efficiency. > > > > 3. Copper would have helped efficiency somewhat with its lower RF resistance and ability to be soldered versus mechanical connections, but that is partially offset by aluminum?s larger skin depth. Of course copper is heavier and more expensive, but in tube form the weight issue could be minimized.. > > > > > > > > Just some thoughts. Again, the VK1OD calculator allows one to make precise efficiency measurements so even small improvements can be measured. As an example, the difference in efficiency between using braided coax as the loop radiator versus hardline or copper tubing is readily apparent. For the same diameter loop and same conductor diameter, a narrower bandwidth means higher efficiency. > > > > > > > > Dale W4OP > > > > > > > > From: KX3 at yahoogroups.com [mailto:KX3 at yahoogroups.com] On Behalf Of 'Wolf Hoeller, OE7FTJ' wolf.oe7ftj at gmail..com [KX3] > > Sent: Wednesday, January 23, 2019 4:57 AM > > To: KX3 at yahoogroups.com > > Subject: Fwd: [KX3] Urban stealth HF: Inside-the-backpack loop antenna? > > > > > > > > > > > > Wayne, > > > > > > > > a really good idea. > > > > Have a look at VK3YE's youtube channel for his experiment to put a loop antenna in (frame of) a notebook bag. https://www.youtube.com/watch?v=BC5lFbLqaeg > > > > > > > > Another good idea for a stealth antenna has the spain company Inac. Here is the suitcase with a loop inside the frame: https://www.inac-radio.com/MAK721PRO > > > > > > > > I would like the idea, to sit in an urban park with my backpack or similar on my knees and make some contacts. > > > > > > > > > > Wolf, OE7FTJ > > > > Emergency Communications via Winlink Global Radio Email ?? > > > > > > > > > > > > > > > > Am Di., 22. Jan. 2019 um 21:57 Uhr schrieb Wayne Burdick n6kr at elecraft.com [KX3] : > > > >> > >> > >> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. > >> > >> > >> > >> So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. > >> > >> > >> > >> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. > >> > >> > >> > >> Any other antenna suggestions? > >> > >> > >> > >> Wayne > >> > >> N6KR > >> > >> > >> > >> > >> > > > > > > __._,_.___ > > Posted by: "Dale Parfitt" > > Reply via web post ? Reply to sender ? Reply to group ? Start a New Topic ? Messages in this topic (2) > > > > Have you tried the highest rated email app? > > With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage. > > VISIT YOUR GROUP > > ? Privacy ? Unsubscribe ? Terms of Use > > > > SPONSORED LINKS > > > > > > > > . > > > > > > __,_._,___ > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jim at jtmiller.com From phystad at mac.com Wed Jan 23 12:00:42 2019 From: phystad at mac.com (Phil Hystad) Date: Wed, 23 Jan 2019 09:00:42 -0800 Subject: [Elecraft] K3 S-meter reading and coax input or antenna voltage ? Message-ID: <7F527058-A997-4A0D-B71C-03A72CC7F5DD@mac.com> If I had an S-meter reading, S9 for example, on my K3, what could I infer about the voltage level of that signal at the Coax input to my K3? A table I found on the Internet for singals below 30 MHz says that an S-9 meter reading is a signal of 50-microvolts but where in the system is that registering 50 microvolts. At the input the K3 or some other circuit within the K3? Thanks -- just mostly curious about this and the connection between S-meter reading and actual signals input to the receiver. 73, phil, K7PEH From kk7p4dsp at gmail.com Wed Jan 23 13:02:26 2019 From: kk7p4dsp at gmail.com (Lyle Johnson) Date: Wed, 23 Jan 2019 11:02:26 -0700 Subject: [Elecraft] K3 S-meter reading and coax input or antenna voltage ? In-Reply-To: <7F527058-A997-4A0D-B71C-03A72CC7F5DD@mac.com> References: <7F527058-A997-4A0D-B71C-03A72CC7F5DD@mac.com> Message-ID: <328c16d9-acbd-cc14-b04a-961712f8e72a@gmail.com> Phil, With the original K3, S Meter "ABS" mode the S meter is referenced to the signal level at the antenna jack.? S9 = -73 dBm = 50 uV into 50 ohms. In the other S Meter mode, the reading varies with ATT and PRE settings, as well as signal level. 73, Lyle KK7P On 1/23/19 10:00 AM, Phil Hystad via Elecraft wrote: > If I had an S-meter reading, S9 for example, on my K3, what could I infer about the voltage level of that signal at the Coax input to my K3? From wes_n7ws at triconet.org Wed Jan 23 13:05:53 2019 From: wes_n7ws at triconet.org (Wes) Date: Wed, 23 Jan 2019 11:05:53 -0700 Subject: [Elecraft] K3 S-meter reading and coax input or antenna voltage ? In-Reply-To: <7F527058-A997-4A0D-B71C-03A72CC7F5DD@mac.com> References: <7F527058-A997-4A0D-B71C-03A72CC7F5DD@mac.com> Message-ID: <0c54f720-0f07-69a4-370d-76872097af55@triconet.org> At the antenna spigot. On 1/23/2019 10:00 AM, Phil Hystad via Elecraft wrote: > If I had an S-meter reading, S9 for example, on my K3, what could I infer about the voltage level of that signal at the Coax input to my K3? > > A table I found on the Internet for singals below 30 MHz says that an S-9 meter reading is a signal of 50-microvolts but where in the system is that registering 50 microvolts. At the input the K3 or some other circuit within the K3? > > Thanks -- just mostly curious about this and the connection between S-meter reading and actual signals input to the receiver. > > 73, phil, K7PEH > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wes_n7ws at triconet.org > From donwilh at embarqmail.com Wed Jan 23 13:48:00 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 23 Jan 2019 13:48:00 -0500 Subject: [Elecraft] K3 KAT3 High SWR Issue Solved In-Reply-To: <6ed13354-b2f5-2c1d-df52-90627a2f5a24@sdellington.us> References: <5c488b1e.1c69fb81.22a4e.d813@mx.google.com> <6ed13354-b2f5-2c1d-df52-90627a2f5a24@sdellington.us> Message-ID: <3d0f8769-43c4-6978-ab98-8053f220638a@embarqmail.com> Scott, It was added to the initial K3s, but later found not to be necessary, and if the trap broke down, it would cause trouble. So the KAR3A does not have it. 73, Don W3FPR On 1/23/2019 10:49 AM, K9MA wrote: > On 1/23/2019 09:41, Ed G wrote: >> A fair amount of digging in the email archives found a couple posts >> which touched on an issue with the 8.215 MHz trap (C10 and L10) on the >> KAT3 tuner board. > > Although my older K3 doesn't seem to have a problem, I wonder why that > trap was not required in the KAT3A. It was there, presumably to improve > IF rejection, so I'd expect removing it without some other change to the > K3 would be unwise. > From n8sbe at arrl.net Wed Jan 23 14:01:22 2019 From: n8sbe at arrl.net (Dave New, N8SBE) Date: Wed, 23 Jan 2019 12:01:22 -0700 Subject: [Elecraft] =?utf-8?q?Urban_stealth_HF=3A_Inside-the-backpack_loop?= =?utf-8?q?_antenna=3F?= Message-ID: <20190123120122.1fa1e31b6b6b329ecc65be958babcc1f.1378709a1a.wbe@email09.godaddy.com> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. Any other antenna suggestions? Wayne N6KR Who was that guy at the HFPack get-together at HARA a few Daytons ago, that was running A KILOWATT pedestrian mobile? It he still on this planet? :-) 73. -- Dave, N8SBE From n8sbe at arrl.net Wed Jan 23 14:04:25 2019 From: n8sbe at arrl.net (Dave New, N8SBE) Date: Wed, 23 Jan 2019 12:04:25 -0700 Subject: [Elecraft] =?utf-8?q?Urban_stealth_HF=3A_Inside-the-backpack_loop?= =?utf-8?q?_antenna=3F?= Message-ID: <20190123120425.1fa1e31b6b6b329ecc65be958babcc1f.7ed2fcaf44.wbe@email09.godaddy.com> > Here's another idea. > > Run a wire inside your shirt from one cuff across your back and down to > the other cuff. Wrap loading coils around each arm just above the > elbow. Feed the "dipole" in the center at the back of your neck. > > I did a quick model (assuming your arms are held straight out) with 5.5 > feet total length and 2200 inductive ohms for each coil, with each coil > 30% from their respective ends of the wire. It "resonates" at around > 14.15 MHz, but with only about 0.4 ohms real feedpoint impedance. I > assume it would take some sort of extra matching network to bring that > up enough that a KX2 with the internal tuner could drive it. > > Ignoring the effect of a person's arm, another quick calculation says > that the arm coils would need to be roughly 11 turns of 10 gauge wire > 3.5 inches in diameter ... unless I made a mistake, which is quite > possible. > > It would bring new meaning to the term "compromise antenna", but I bet > it would be more effective than a super small loop the size of backpack > frame. > > 73, > Dave AB7E Wouldn't that be a 'scarecrow' antenna? 73, -- Dave, N8SBE From wunder at wunderwood.org Wed Jan 23 14:05:52 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Wed, 23 Jan 2019 11:05:52 -0800 Subject: [Elecraft] Urban Stealth In-Reply-To: References: Message-ID: <8B3237C2-5DB4-4BE7-ADC7-CC7C03BCF67E@wunderwood.org> A pack frame is just about right for a 2 m moxon beam, but that isn?t HF. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 22, 2019, at 7:22 PM, Norm Lee > wrote: > > Good thinking, Grant. How about the metal frame for a backpack? Unobtrusive, lightweight, and an intregal part of the backpack. Brilliant! > Cheers > Norm vk5gi > McLaren Vale > South Australia From markmusick at outlook.com Wed Jan 23 14:07:30 2019 From: markmusick at outlook.com (Mark Musick) Date: Wed, 23 Jan 2019 19:07:30 +0000 Subject: [Elecraft] K3 KAT3 High SWR Issue Solved In-Reply-To: <3d0f8769-43c4-6978-ab98-8053f220638a@embarqmail.com> References: <5c488b1e.1c69fb81.22a4e.d813@mx.google.com> <6ed13354-b2f5-2c1d-df52-90627a2f5a24@sdellington.us> <3d0f8769-43c4-6978-ab98-8053f220638a@embarqmail.com> Message-ID: Don, Is the trap in all KAT3s up through those installed in K3s with 9000 or just the early K3s below some serial number? Mark, WB9CIF -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Don Wilhelm Sent: Wednesday, January 23, 2019 18:48 To: K9MA ; elecraft at mailman.qth.net Subject: Re: [Elecraft] K3 KAT3 High SWR Issue Solved Scott, It was added to the initial K3s, but later found not to be necessary, and if the trap broke down, it would cause trouble. So the KAR3A does not have it. 73, Don W3FPR On 1/23/2019 10:49 AM, K9MA wrote: > On 1/23/2019 09:41, Ed G wrote: >> A fair amount of digging in the email archives found a couple posts >> which touched on an issue with the 8.215 MHz trap (C10 and L10) on >> the >> KAT3 tuner board. > > Although my older K3 doesn't seem to have a problem, I wonder why that > trap was not required in the KAT3A. It was there, presumably to > improve IF rejection, so I'd expect removing it without some other > change to the > K3 would be unwise. > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to markmusick at outlook.com From donwilh at embarqmail.com Wed Jan 23 14:12:48 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 23 Jan 2019 14:12:48 -0500 Subject: [Elecraft] K3 KAT3 High SWR Issue Solved In-Reply-To: References: <5c488b1e.1c69fb81.22a4e.d813@mx.google.com> <6ed13354-b2f5-2c1d-df52-90627a2f5a24@sdellington.us> <3d0f8769-43c4-6978-ab98-8053f220638a@embarqmail.com> Message-ID: <2e7ec7ed-77b8-6d1e-ba9d-421b6780de81@embarqmail.com> Mark, I am not certain when they stopped installing the trap in the KAT3, but I know it is not in the KAT3A. If you pull your KAT3 out for any reason, eliminate the trap. 73, Don W3FPR On 1/23/2019 2:07 PM, Mark Musick wrote: > Don, > Is the trap in all KAT3s up through those installed in K3s with 9000 or just the early K3s below some serial number? > > Mark, WB9CIF > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net On Behalf Of Don Wilhelm > Sent: Wednesday, January 23, 2019 18:48 > To: K9MA ; elecraft at mailman.qth.net > Subject: Re: [Elecraft] K3 KAT3 High SWR Issue Solved > > Scott, > > It was added to the initial K3s, but later found not to be necessary, and if the trap broke down, it would cause trouble. So the KAR3A does not have it. > > 73, > Don W3FPR > > On 1/23/2019 10:49 AM, K9MA wrote: >> On 1/23/2019 09:41, Ed G wrote: >>> A fair amount of digging in the email archives found a couple posts >>> which touched on an issue with the 8.215 MHz trap (C10 and L10) on >>> the >>> KAT3 tuner board. >> Although my older K3 doesn't seem to have a problem, I wonder why that >> trap was not required in the KAT3A. It was there, presumably to >> improve IF rejection, so I'd expect removing it without some other >> change to the >> K3 would be unwise. >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message delivered to markmusick at outlook.com > From n8sbe at arrl.net Wed Jan 23 14:26:03 2019 From: n8sbe at arrl.net (Dave New, N8SBE) Date: Wed, 23 Jan 2019 12:26:03 -0700 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching Message-ID: <20190123122603.1fa1e31b6b6b329ecc65be958babcc1f.02e33c1533.wbe@email09.godaddy.com> > Are you serious? > Wes N7WS Wes, Yes. I'm a stickler for accuracy. It always bothered me that the so-called 'temperature compensated' LO in the K3 was not actively being steered by temperature compensation (i.e. I could only put static temperature offsets into the rig memory from the data sheet that came with the oscillator). That was a 'feature' that was never released. At HF frequencies, it was only an annoyance, but using UHF transverters, the error compounds (I'm using a crystal oven in my UHF transverter, but the lack of one in the K3 caused drifting). I use a Citizen watch with WWVB reception, so the time on my wrist is never more than 50 ms off. Anally yours, -- Dave, N8SBE On 1/22/2019 1:45 PM, Dave New, N8SBE wrote: > Don't know how i did without it all these years... > > 73, > > -- Dave, N8SBE > ______________________________________________________________ From ko5v at earthlink.net Wed Jan 23 14:28:01 2019 From: ko5v at earthlink.net (Jim KO5V) Date: Wed, 23 Jan 2019 12:28:01 -0700 (GMT-07:00) Subject: [Elecraft] K2 VCO Alignment T5 L30 Message-ID: <1928357920.7753.1548271681535@wamui-boogie.atl.sa.earthlink.net> Tom, On my latest K2 build, I put a 1pf cap into the C68 (10pf) location. The 1pf cap was labelled "1D", which looked a lot like a "10" to my eyes. I think it took me about 4 hours to figure that one out. Once fixed, it all fell into place, and everything worked. We all do it! 73, Jim KO5V "Message: 3 Date: Tue, 22 Jan 2019 21:57:09 -0500 From: K2bew To: donwilh at embarqmail.com Cc: Elecraft Mail List Subject: Re: [Elecraft] K2 VCO Alignment T5 L30 Message-ID: Content-Type: text/plain; charset="UTF-8" Don Et Al, So, It is with some embarrassment, and much relief, that I can report it was operator error and my BFO is now working perfectly. I got home from work and was getting ready to do some continuity checks to all the circuits surrounding and including U11, but decided I better check all the components again in that section with the RF board disconnected and out of the case. I found much to my chagrin I had not installed D37 and D38! I had them checked off in the manual as being installed, and I even wrote in pencil in the margin on the next step where you put the rest of the V149's in the RF board that I had 2 left over, but I failed to notice I had them left over because I did not put them in the step before!, good grief. Anyway I have a high BFO reading of 4917.60 and a low reading of 4911.98 with a difference of 5.62. Thank you Don and to others that gave suggestions, and I do wish those having similar problems well in their trouble shooting. Upward and onward 73, Tom Bewick, K2BEW" From wilton.paul at gmail.com Wed Jan 23 15:03:04 2019 From: wilton.paul at gmail.com (Paul Wilton) Date: Wed, 23 Jan 2019 20:03:04 +0000 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? Message-ID: 10+ years ago, we built a HF loop inside a coat. I can?t really tell you the application but the loop was made of copper braid and put between the liner and the outer shell of the coat. It was tuned with a simple L match with a LED to indicate peak power. We operated it on the 80, 60 and 40m bands. The drive was an FT817 at 5w. We weren?t trying for DX but it worked well for the short distances we needed it to work. It was also pretty easy to tune up and and once tuned stayed there. 73 Paul M1CNK From mike at ab9v.us Wed Jan 23 15:04:06 2019 From: mike at ab9v.us (Mike Cox) Date: Wed, 23 Jan 2019 15:04:06 -0500 Subject: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> <019601d4b328$82fc8d00$88f5a700$@frontier.com> <13A53BA3-E52A-4ECF-95F5-505A9A8E6E21@elecraft.com> Message-ID: <32f5ff18-1952-d9a2-42ae-9eb0b090731a@ab9v.us> A proper shield of a KPA-1500/PS with battery and 240VAC inverter should be adequate protection if stuffed between the antenna and your backside ;-). ... Mike On 1/23/2019 11:34 AM, Wayne Burdick wrote: > The entire purpose of the exercise is to be able to operate while walking. If the field is a potential health risk, power would have to be dropped accordingly. > > Wayne > > >> On Jan 23, 2019, at 8:28 AM, Jim Miller wrote: >> >> I assume that this "backpack frame antenna" wouldn't be actually used when being worn. The circulating currents in a Hi-Q loop result in strong RF fields along the loop axis which should be avoided in use. >> >> jim ab3cv >> >> On Wed, Jan 23, 2019 at 11:21 AM Wayne Burdick wrote: >> Wish I had time to build one of these myself! A few other things in the queue.... >> >> Wayne >> N6KR >> >> >>> On Jan 23, 2019, at 6:32 AM, 'Dale Parfitt' parinc1 at frontier.com [KX3] wrote: >>> >>> >>> HI Wolf, >>> >>> VK3YE could have done so much better from an efficiency standpoint without making the loop any larger. >>> >>> 1. Flat metal stock is not as efficient as round stock (of the same circumference) because current crowding at the edges of the rectangular stock makes it appear smaller in surface area. >>> >>> 2. A much lower D capacitor such as a dual gang air variable with the gangs in series (to avoid resistive losses in the bearings) or a butterfly would also have aided in higher efficiency. >>> >>> 3. Copper would have helped efficiency somewhat with its lower RF resistance and ability to be soldered versus mechanical connections, but that is partially offset by aluminum?s larger skin depth. Of course copper is heavier and more expensive, but in tube form the weight issue could be minimized.. >>> >>> >>> >>> Just some thoughts. Again, the VK1OD calculator allows one to make precise efficiency measurements so even small improvements can be measured. As an example, the difference in efficiency between using braided coax as the loop radiator versus hardline or copper tubing is readily apparent. For the same diameter loop and same conductor diameter, a narrower bandwidth means higher efficiency. >>> >>> >>> >>> Dale W4OP >>> >>> >>> >>> From: KX3 at yahoogroups.com [mailto:KX3 at yahoogroups.com] On Behalf Of 'Wolf Hoeller, OE7FTJ' wolf.oe7ftj at gmail..com [KX3] >>> Sent: Wednesday, January 23, 2019 4:57 AM >>> To: KX3 at yahoogroups.com >>> Subject: Fwd: [KX3] Urban stealth HF: Inside-the-backpack loop antenna? >>> >>> >>> >>> >>> >>> Wayne, >>> >>> >>> >>> a really good idea. >>> >>> Have a look at VK3YE's youtube channel for his experiment to put a loop antenna in (frame of) a notebook bag. https://www.youtube.com/watch?v=BC5lFbLqaeg >>> >>> >>> >>> Another good idea for a stealth antenna has the spain company Inac. Here is the suitcase with a loop inside the frame: https://www.inac-radio.com/MAK721PRO >>> >>> >>> >>> I would like the idea, to sit in an urban park with my backpack or similar on my knees and make some contacts. >>> >>> >>> >>> >>> Wolf, OE7FTJ >>> >>> Emergency Communications via Winlink Global Radio Email ?? >>> >>> >>> >>> >>> >>> >>> >>> Am Di., 22. Jan. 2019 um 21:57 Uhr schrieb Wayne Burdick n6kr at elecraft.com [KX3] : >>> >>>> >>>> >>>> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. >>>> >>>> >>>> >>>> So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. >>>> >>>> >>>> >>>> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. >>>> >>>> >>>> >>>> Any other antenna suggestions? >>>> >>>> >>>> >>>> Wayne >>>> >>>> N6KR >>>> >>>> >>>> >>>> >>>> >>> >>> __._,_.___ >>> Posted by: "Dale Parfitt" >>> Reply via web post ? Reply to sender ? Reply to group ? Start a New Topic ? Messages in this topic (2) >>> >>> Have you tried the highest rated email app? >>> With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage. >>> VISIT YOUR GROUP >>> ? Privacy ? Unsubscribe ? Terms of Use >>> >>> SPONSORED LINKS >>> >>> >>> >>> . >>> >>> >>> __,_._,___ >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to jim at jtmiller.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to mike at ab9v.us From wes_n7ws at triconet.org Wed Jan 23 15:42:12 2019 From: wes_n7ws at triconet.org (Wes) Date: Wed, 23 Jan 2019 13:42:12 -0700 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: <20190123122603.1fa1e31b6b6b329ecc65be958babcc1f.02e33c1533.wbe@email09.godaddy.com> References: <20190123122603.1fa1e31b6b6b329ecc65be958babcc1f.02e33c1533.wbe@email09.godaddy.com> Message-ID: <06669240-89cd-0519-aef1-03f240b66ed1@triconet.org> You should be subscribed to Timenuts. But clearly one of us is confused. If you're using an OCXO in your transverter and up converting the K3, how does K3 drift/inaccuracy "compound" at UHF? Can you read that watch to 50 ms?? What are you going to do when WWVB goes QRT? Wes? N7WS On 1/23/2019 12:26 PM, Dave New, N8SBE wrote: > > Wes, > > Yes. I'm a stickler for accuracy. It always bothered me that the > so-called 'temperature compensated' LO in the K3 was not actively being > steered by temperature compensation (i.e. I could only put static > temperature offsets into the rig memory from the data sheet that came > with the oscillator). That was a 'feature' that was never released. At > HF frequencies, it was only an annoyance, but using UHF transverters, > the error compounds (I'm using a crystal oven in my UHF transverter, but > the lack of one in the K3 caused drifting). > > I use a Citizen watch with WWVB reception, so the time on my wrist is > never more than 50 ms off. > > Anally yours, > > -- Dave, N8SBE > From rolfb at accima.com Wed Jan 23 16:43:39 2019 From: rolfb at accima.com (Bob W7AVK) Date: Wed, 23 Jan 2019 13:43:39 -0800 Subject: [Elecraft] Not built 40/20 K1 Kit In-Reply-To: <20190123120425.1fa1e31b6b6b329ecc65be958babcc1f.7ed2fcaf44.wbe@email09.godaddy.com> References: <20190123120425.1fa1e31b6b6b329ecc65be958babcc1f.7ed2fcaf44.wbe@email09.godaddy.com> Message-ID: <37a27c9a-4993-000b-b21e-37ecaf8f7b35@accima.com> .In 2000 I purchased for a high school friend a two band [40 and 20]? K1 kit.? Idea was to kick start his interest in ham radio. Turned out he put the kit away and never returned to ham radio. Anyone interested in a 40 and 20 meter original K1 kit in the original box and packaging? 73? Bob? W7AVK From donwilh at embarqmail.com Wed Jan 23 16:47:38 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 23 Jan 2019 16:47:38 -0500 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: <20190123122603.1fa1e31b6b6b329ecc65be958babcc1f.02e33c1533.wbe@email09.godaddy.com> References: <20190123122603.1fa1e31b6b6b329ecc65be958babcc1f.02e33c1533.wbe@email09.godaddy.com> Message-ID: <409052e0-19aa-a754-b908-f895ddac26f4@embarqmail.com> Dave, Put the external reference oscillator input option on your K3 and avoid that situation with an external 10 MHz reference oscillator. The K3 Reference Oscillator temperature steering is from the static temperature offsets. If you have equipment to do better than the Data Sheet, you can determine your own values, but for those without that equipment, the data sheet provides a good index for various temperatures. 73, Don W3FPR > > Yes. I'm a stickler for accuracy. It always bothered me that the > so-called 'temperature compensated' LO in the K3 was not actively being > steered by temperature compensation (i.e. I could only put static > temperature offsets into the rig memory from the data sheet that came > with the oscillator). That was a 'feature' that was never released. At > HF frequencies, it was only an annoyance, but using UHF transverters, > the error compounds (I'm using a crystal oven in my UHF transverter, but > the lack of one in the K3 caused drifting). From gliderboy1955 at yahoo.com Wed Jan 23 18:28:24 2019 From: gliderboy1955 at yahoo.com (eric norris) Date: Wed, 23 Jan 2019 23:28:24 +0000 (UTC) Subject: [Elecraft] HF Stealth Loops References: <1897141967.119757.1548286104009.ref@mail.yahoo.com> Message-ID: <1897141967.119757.1548286104009@mail.yahoo.com> Anyone interested in magloops should visit www.alexloop.com? by Alex, PY1AHD.? He has really pioneered the popularity of small, portable loops and has built many? experimental loops.? There is a video of him setting up an AlexLoop in 90 seconds (not rushed) at www.alexloop.com A magloop inside a backpack next to the human body probably won't work because the loop is detuned by the human, and that tuning varies with the distance.? If you are walking, tuning would be difficult because the pack will jiggle, varying the distance--unless you could glide motionless over the ground (or water).? I suspect Wayne could do this, but probably not in public.? Even when you use a magloop on a tripod, you have to tune it using an offset so it is in the right place when you step away.? This quickly becomes intuitive once you know how much, and which way, to turn the tuning capacitor. However, a loop mounted above the backpack, say on a folding stick, works and has been done.? See www.alexloop.com A small loop does work--I have made contacts on a 3ft diameter AlexLoop on 40m SSB with 5w.? On 20m, it could be smaller and still work, though obviously with less efficiency.?? The advantage of magloops is their small size, quick setup, and needing neither a counterpoise nor more height above ground than one loop diameter.? If you go to a public park and want to talk to a ranger, setting up a magloop will materialize one as if by magic.? Magloops are terrific chick magnets, kid magnets, and will get you in heated arguments with people who have never used one. I have no commercial relationship with Alex, PY1AHD, but I count him as a mentor and friend.? Really, look at the portable magloops on his website.? www.alexloop.com? 73 Eric WD6DBM Sent from Yahoo Mail on Android From w1go at icloud.com Wed Jan 23 18:44:15 2019 From: w1go at icloud.com (W1GO (Joe)) Date: Wed, 23 Jan 2019 18:44:15 -0500 Subject: [Elecraft] HF Stealth Loops In-Reply-To: <1897141967.119757.1548286104009@mail.yahoo.com> References: <1897141967.119757.1548286104009.ref@mail.yahoo.com> <1897141967.119757.1548286104009@mail.yahoo.com> Message-ID: <9B185269-5BA7-4455-BB0D-C8A9B684D18B@icloud.com> Prefer the W4OP loop due to ruggedness and remote tune feature. Yes, its heavier but how many of us actually hike to the top of a big mountain? What would be great, however, would be a mag loop that the KX2 or KX3 could remotely tuned from the rig. I?d pay for that ... Joe W1GO > On Jan 23, 2019, at 18:28, eric norris via Elecraft wrote: > > Anyone interested in magloops should visit www.alexloop.com by Alex, PY1AHD. He has really pioneered the popularity of small, portable loops and has built many experimental loops. There is a video of him setting up an AlexLoop in 90 seconds (not rushed) at www.alexloop.com > A magloop inside a backpack next to the human body probably won't work because the loop is detuned by the human, and that tuning varies with the distance. If you are walking, tuning would be difficult because the pack will jiggle, varying the distance--unless you could glide motionless over the ground (or water). I suspect Wayne could do this, but probably not in public. Even when you use a magloop on a tripod, you have to tune it using an offset so it is in the right place when you step away. This quickly becomes intuitive once you know how much, and which way, to turn the tuning capacitor. > However, a loop mounted above the backpack, say on a folding stick, works and has been done. See www.alexloop.com > A small loop does work--I have made contacts on a 3ft diameter AlexLoop on 40m SSB with 5w. On 20m, it could be smaller and still work, though obviously with less efficiency. > The advantage of magloops is their small size, quick setup, and needing neither a counterpoise nor more height above ground than one loop diameter. If you go to a public park and want to talk to a ranger, setting up a magloop will materialize one as if by magic. Magloops are terrific chick magnets, kid magnets, and will get you in heated arguments with people who have never used one. > I have no commercial relationship with Alex, PY1AHD, but I count him as a mentor and friend. Really, look at the portable magloops on his website. www.alexloop.com > 73 Eric WD6DBM > > Sent from Yahoo Mail on Android > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w1go at icloud.com From ab2tc at arrl.net Wed Jan 23 20:08:57 2019 From: ab2tc at arrl.net (ab2tc) Date: Wed, 23 Jan 2019 18:08:57 -0700 (MST) Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: <06669240-89cd-0519-aef1-03f240b66ed1@triconet.org> References: <20190123122603.1fa1e31b6b6b329ecc65be958babcc1f.02e33c1533.wbe@email09.godaddy.com> <06669240-89cd-0519-aef1-03f240b66ed1@triconet.org> Message-ID: <1548292137143-0.post@n2.nabble.com> Hi, It doesn't "compound". A 10Hz drift at the antenna output of the K3, will be reflected as a 10Hz drift at the output of any transverter, be it VHF, UHF or microwave. At the higher frequencies even a transverter with an OCXO its drift would probably dominate. AB2TC - Knut Wes Stewart-2 wrote > You should be subscribed to Timenuts. > > But clearly one of us is confused. If you're using an OCXO in your > transverter > and up converting the K3, how does K3 drift/inaccuracy "compound" at UHF? > > Can you read that watch to 50 ms?? What are you going to do when WWVB goes > QRT? > > Wes? N7WS > > On 1/23/2019 12:26 PM, Dave New, N8SBE wrote: >> >> Wes, >> >> Yes. I'm a stickler for accuracy. It always bothered me that the > -- Sent from: http://elecraft.365791.n2.nabble.com/ From d.cutter at ntlworld.com Wed Jan 23 20:11:46 2019 From: d.cutter at ntlworld.com (CUTTER DAVID) Date: Thu, 24 Jan 2019 01:11:46 +0000 (GMT) Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <20190123120122.1fa1e31b6b6b329ecc65be958babcc1f.1378709a1a.wbe@email09.godaddy.com> References: <20190123120122.1fa1e31b6b6b329ecc65be958babcc1f.1378709a1a.wbe@email09.godaddy.com> Message-ID: <300930206.69272.1548292306593@mail2.virginmedia.com> From rmcgraw at blomand.net Wed Jan 23 20:15:55 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Wed, 23 Jan 2019 19:15:55 -0600 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: <1548292137143-0.post@n2.nabble.com> References: <20190123122603.1fa1e31b6b6b329ecc65be958babcc1f.02e33c1533.wbe@email09.godaddy.com> <06669240-89cd-0519-aef1-03f240b66ed1@triconet.org> <1548292137143-0.post@n2.nabble.com> Message-ID: <9AAE75EB-07C4-4944-B5A1-0E2B6C361D54@blomand.net> I've never had a drift issue with any of my modern transceivers on 28MHz as the IF. Now the TCXO drift in the transverters is real issue. Bob, K4TAX Sent from my iPhone > On Jan 23, 2019, at 7:08 PM, ab2tc wrote: > > Hi, > > It doesn't "compound". A 10Hz drift at the antenna output of the K3, will be > reflected as a 10Hz drift at the output of any transverter, be it VHF, UHF > or microwave. At the higher frequencies even a transverter with an OCXO its > drift would probably dominate. > > AB2TC - Knut > > > Wes Stewart-2 wrote >> You should be subscribed to Timenuts. >> >> But clearly one of us is confused. If you're using an OCXO in your >> transverter >> and up converting the K3, how does K3 drift/inaccuracy "compound" at UHF? >> >> Can you read that watch to 50 ms? What are you going to do when WWVB goes >> QRT? >> >> Wes N7WS >> >>> On 1/23/2019 12:26 PM, Dave New, N8SBE wrote: >>> >>> Wes, >>> >>> Yes. I'm a stickler for accuracy. It always bothered me that the >> > > > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From d.cutter at ntlworld.com Wed Jan 23 20:20:12 2019 From: d.cutter at ntlworld.com (CUTTER DAVID) Date: Thu, 24 Jan 2019 01:20:12 +0000 (GMT) Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <300930206.69272.1548292306593@mail2.virginmedia.com> References: <20190123120122.1fa1e31b6b6b329ecc65be958babcc1f.1378709a1a.wbe@email09.godaddy.com> <300930206.69272.1548292306593@mail2.virginmedia.com> Message-ID: <854417680.69308.1548292812857@mail2.virginmedia.com> From ardrhi at gmail.com Wed Jan 23 21:00:54 2019 From: ardrhi at gmail.com (Gwen Patton) Date: Wed, 23 Jan 2019 21:00:54 -0500 Subject: [Elecraft] HF Stealth Loops In-Reply-To: <9B185269-5BA7-4455-BB0D-C8A9B684D18B@icloud.com> References: <1897141967.119757.1548286104009.ref@mail.yahoo.com> <1897141967.119757.1548286104009@mail.yahoo.com> <9B185269-5BA7-4455-BB0D-C8A9B684D18B@icloud.com> Message-ID: I'm working on a potentially collapsible and packable small transmitting loop. The main loop support is a 27-inch bicycle inner tube. On an earlier version, I made a single loop unit using a wooden support system and plastic plumbers pipe support strap, with conductive-adhesive backed copper foil as the conductor. It worked excellently well, getting good signal reports on 30m FT8, running about 25 watts indoors. I got to Fargo from Philadelphia with a good signal. The structure, however was too big, and the loop insufficiently rigid. The first test will be a hybrid of the inner tube as the loop support for the flexible plastic strap with copper foil. If it works, that's a usable solution as it stands. But the eventual design is the copper foil directly on the inner tube. I plan for six strips around the circumference, and a system of connections to lengthen the conductor by jumping them together strategically, to keep the center of the loop stationary. That won't require moving the coupling loop. My hope is a loop that can be deflated and packed, then reinflated onsite using a small pump. The durability of the foil conductors will be part of my testing, to make sure the repeated inflation and deflation doesn't destroy them. If nothing else, the hybrid should work easily, allowing for a quickly deployed loop without heavy supports, that will take more than QRP output. I've run 100 watts through the present loop without significant heating anywhere on the loop or in the variable capacitor. 73, Gwen Patton, NG3P On Wed, Jan 23, 2019, 6:44 PM W1GO (Joe) via Elecraft < elecraft at mailman.qth.net wrote: > Prefer the W4OP loop due to ruggedness and remote tune feature. Yes, its > heavier but how many of us actually hike to the top of a big mountain? > > What would be great, however, would be a mag loop that the KX2 or KX3 > could remotely tuned from the rig. I?d pay for that ... > > Joe W1GO > > > On Jan 23, 2019, at 18:28, eric norris via Elecraft < > elecraft at mailman.qth.net> wrote: > > > > Anyone interested in magloops should visit www.alexloop.com by Alex, > PY1AHD. He has really pioneered the popularity of small, portable loops > and has built many experimental loops. There is a video of him setting up > an AlexLoop in 90 seconds (not rushed) at www.alexloop.com > > A magloop inside a backpack next to the human body probably won't work > because the loop is detuned by the human, and that tuning varies with the > distance. If you are walking, tuning would be difficult because the pack > will jiggle, varying the distance--unless you could glide motionless over > the ground (or water). I suspect Wayne could do this, but probably not in > public. Even when you use a magloop on a tripod, you have to tune it using > an offset so it is in the right place when you step away. This quickly > becomes intuitive once you know how much, and which way, to turn the tuning > capacitor. > > However, a loop mounted above the backpack, say on a folding stick, > works and has been done. See www.alexloop.com > > A small loop does work--I have made contacts on a 3ft diameter AlexLoop > on 40m SSB with 5w. On 20m, it could be smaller and still work, though > obviously with less efficiency. > > The advantage of magloops is their small size, quick setup, and needing > neither a counterpoise nor more height above ground than one loop > diameter. If you go to a public park and want to talk to a ranger, setting > up a magloop will materialize one as if by magic. Magloops are terrific > chick magnets, kid magnets, and will get you in heated arguments with > people who have never used one. > > I have no commercial relationship with Alex, PY1AHD, but I count him as > a mentor and friend. Really, look at the portable magloops on his > website. www.alexloop.com > > 73 Eric WD6DBM > > > > Sent from Yahoo Mail on Android > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to w1go at icloud.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to ardrhi at gmail.com From n6kr at elecraft.com Wed Jan 23 22:07:43 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Wed, 23 Jan 2019 19:07:43 -0800 Subject: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <7c66fecd-ab2a-98a5-b815-28fb84370b13@sierraoe.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> <019601d4b328$82fc8d00$88f5a700$@frontier.com> <13A53BA3-E52A-4ECF-95F5-505A9A8E6E21@elecraft.com> <7c66fecd-ab2a-98a5-b815-28fb84370b13@sierraoe.com> Message-ID: That might fit. Maybe something a little shorter, say 18". Can it be used with just 2 feet of coax? What's the bandwidth? How does it compare to a 3' loop or a 4' whip? Wayne N6KR > On Jan 23, 2019, at 9:51 AM, Jeff Wagner wrote: > > See the picture of a 20 Meter EH antenna on my QRZ page https://www.qrz.com/db/KK6CUG. > > It would fit into a backpack but it's 20 M only. Beer bottle for scale only - hi hi. > > https://www.qrz.com/db/KK6CUG > > Jeff, KK6CUG > > On 1/23/2019 8:34, Wayne Burdick n6kr at elecraft.com [KX3] wrote: >> The entire purpose of the exercise is to be able to operate while walking. If the field is a potential health risk, power would have to be dropped accordingly. >> >> Wayne >> >> > On Jan 23, 2019, at 8:28 AM, Jim Miller wrote: >> > >> > I assume that this "backpack frame antenna" wouldn't be actually used when being worn. The circulating currents in a Hi-Q loop result in strong RF fields along the loop axis which should be avoided in use. >> > >> > jim ab3cv >> > >> > > > > > > > > > > >> > On Wed, Jan 23, 2019 at 11:21 AM Wayne Burdick wrote: >> > Wish I had time to build one of these myself! A few other things in the queue.... >> > >> > Wayne >> > N6KR >> > >> > >> > > On Jan 23, 2019, at 6:32 AM, 'Dale Parfitt' parinc1 at frontier.com [KX3] wrote: >> > > >> > > >> > > HI Wolf, >> > > >> > > VK3YE could have done so much better from an efficiency standpoint without making the loop any larger. >> > > >> > > 1. Flat metal stock is not as efficient as round stock (of the same circumference) because current crowding at the edges of the rectangular stock makes it appear smaller in surface area. >> > > >> > > 2. A much lower D capacitor such as a dual gang air variable with the gangs in series (to avoid resistive losses in the bearings) or a butterfly would also have aided in higher efficiency. >> > > >> > > 3. Copper would have helped efficiency somewhat with its lower RF resistance and ability to be soldered versus mechanical connections, but that is partially offset by aluminum?s larger skin depth. Of course copper is heavier and more expensive, but in tube form the weight issue could be minimized.. >> > > >> > > >> > > >> > > Just some thoughts. Again, the VK1OD calculator allows one to make precise efficiency measurements so even small improvements can be measured. As an example, the difference in efficiency between using braided coax as the loop radiator versus hardline or copper tubing is readily apparent. For the same diameter loop and same conductor diameter, a narrower bandwidth means higher efficiency. >> > > >> > > >> > > >> > > Dale W4OP >> > > >> > > >> > > >> > > From: KX3 at yahoogroups.com [mailto:KX3 at yahoogroups.com] On Behalf Of 'Wolf Hoeller, OE7FTJ' wolf.oe7ftj at gmail..com [KX3] >> > > Sent: Wednesday, January 23, 2019 4:57 AM >> > > To: KX3 at yahoogroups.com >> > > Subject: Fwd: [KX3] Urban stealth HF: Inside-the-backpack loop antenna? >> > > >> > > >> > > >> > > >> > > >> > > Wayne, >> > > >> > > >> > > >> > > a really good idea. >> > > >> > > Have a look at VK3YE's youtube channel for his experiment to put a loop antenna in (frame of) a notebook bag. https://www.youtube.com/watch?v=BC5lFbLqaeg >> > > >> > > >> > > >> > > Another good idea for a stealth antenna has the spain company Inac. Here is the suitcase with a loop inside the frame: https://www.inac-radio.com/MAK721PRO >> > > >> > > >> > > >> > > I would like the idea, to sit in an urban park with my backpack or similar on my knees and make some contacts. >> > > >> > > >> > > >> > > >> > > Wolf, OE7FTJ >> > > >> > > Emergency Communications via Winlink Global Radio Email ?? >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > Am Di., 22. Jan. 2019 um 21:57 Uhr schrieb Wayne Burdick n6kr at elecraft.com [KX3] : >> > > >> > >> >> > >> >> > >> I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it?s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one?s radio experience. >> > >> >> > >> >> > >> >> > >> So, just for grins, I?d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12? diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1? copper pipe formed in a square would be convenient to deploy. >> > >> >> > >> >> > >> >> > >> The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, of course. OTOH, we?re talking about HF. A cellphone by your ear is probably worse. >> > >> >> > >> >> > >> >> > >> Any other antenna suggestions? >> > >> >> > >> >> > >> >> > >> Wayne >> > >> >> > >> N6KR >> > >> >> > >> >> > >> >> > >> >> > >> >> > > >> > > >> > > >> > >> > __________________________________________________________ >> > Elecraft mailing list >> > Home: http://mailman.qth.net/mailman/listinfo/elecraft >> > Help: http://mailman.qth.net/mmfaq.htm >> > Post: mailto:Elecraft at mailman.qth.net >> > >> > This list hosted by: http://www.qsl.net >> > Please help support this email list: http://www.qsl.net/donate.html >> > Message delivered to jim at jtmiller.com >> >> >> __._,_.___ >> Posted by: Wayne Burdick >> Reply via web post ? Reply to sender ? Reply to group ? Start a New Topic ? Messages in this topic (1) >> >> Have you tried the highest rated email app? >> With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage. >> VISIT YOUR GROUP >> ? Privacy ? Unsubscribe ? Terms of Use >> >> SPONSORED LINKS >> >> >> >> . >> >> >> __,_._,___ > -- > Jeff > From wes_n7ws at triconet.org Wed Jan 23 22:50:23 2019 From: wes_n7ws at triconet.org (Wes) Date: Wed, 23 Jan 2019 20:50:23 -0700 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching In-Reply-To: <1548292137143-0.post@n2.nabble.com> References: <20190123122603.1fa1e31b6b6b329ecc65be958babcc1f.02e33c1533.wbe@em ail09.godaddy.com> <06669240-89cd-0519-aef1-03f240b66ed1@triconet.org> <1548292137143-0.post@n2.nabble.com> Message-ID: Of course I know that.? Mine was a rhetorical question. On 1/23/2019 6:08 PM, ab2tc wrote: > Hi, > > It doesn't "compound". A 10Hz drift at the antenna output of the K3, will be > reflected as a 10Hz drift at the output of any transverter, be it VHF, UHF > or microwave. At the higher frequencies even a transverter with an OCXO its > drift would probably dominate. > > AB2TC - Knut > > > Wes Stewart-2 wrote >> You should be subscribed to Timenuts. >> >> But clearly one of us is confused. If you're using an OCXO in your >> transverter >> and up converting the K3, how does K3 drift/inaccuracy "compound" at UHF? >> >> Can you read that watch to 50 ms?? What are you going to do when WWVB goes >> QRT? >> >> Wes? N7WS >> >> On 1/23/2019 12:26 PM, Dave New, N8SBE wrote: >>> Wes, >>> >>> Yes. I'm a stickler for accuracy. It always bothered me that the >> > > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wes_n7ws at triconet.org From ghyoungman at gmail.com Wed Jan 23 23:06:37 2019 From: ghyoungman at gmail.com (Grant Youngman) Date: Wed, 23 Jan 2019 23:06:37 -0500 Subject: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> <019601d4b328$82fc8d00$88f5a700$@frontier.com> <13A53BA3-E52A-4ECF-95F5-505A9A8E6E21@elecraft.com> <7c66fecd-ab2a-98a5-b815-28fb84370b13@sierraoe.com> Message-ID: <337BEB74-CAE8-46CC-8CE0-48838405F6B2@gmail.com> It might be useful to read W8JI?s take on the E/H antenna ? https://www.w8ji.com/e-h_antenna.htm Grant NQ5T K3 #2091 KX3 #8342 > On Jan 23, 2019, at 10:07 PM, Wayne Burdick wrote: > > That might fit. Maybe something a little shorter, say 18". > > Can it be used with just 2 feet of coax? What's the bandwidth? How does it compare to a 3' loop or a 4' whip? > > Wayne > N6KR > > From nvjims at gmail.com Thu Jan 24 01:37:05 2019 From: nvjims at gmail.com (Jim Shepherd) Date: Wed, 23 Jan 2019 22:37:05 -0800 Subject: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack loop antenna? Message-ID: Cut a large double sided piece of double sided circuit board to fit the backpack. Etch the back side with a symmetric Hilbert curve split into 2 columns fed at the bottom center and the two columns attached at the top. Leave the other side as a solid ground plane... It will take some work to make a matching network, but the length of the 'curve' can easily be a half wave on 20 meters. It will be directional to your rear as you walk along. Jim W6US From benton-webb at hotmail.com Thu Jan 24 07:09:19 2019 From: benton-webb at hotmail.com (Paul Webb) Date: Thu, 24 Jan 2019 12:09:19 +0000 Subject: [Elecraft] FS Message-ID: Selling my K2 for $500 (K5HKX) Sent from Mail for Windows 10 From lee.buller at gmail.com Thu Jan 24 10:23:13 2019 From: lee.buller at gmail.com (Leroy Buller) Date: Thu, 24 Jan 2019 09:23:13 -0600 Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> References: <5EB8DDDD-C0F1-42C4-B2F9-45EC3BD54B3C@elecraft.com> Message-ID: When I was in College at Kansas State, I had a random length long wire out the window and up into some trees from the basement apartment. I used a simple coil and cap with alligator clips to make a LCD tuner on a piece of pine. What made it work was the copper pipe water inlet two feet from the OP desk. Good ground. I worked 80 through 10 with my HW100. No one never saw the antenna in 5 years. BS and Masters Lee K0WA On Tue, Jan 22, 2019, 2:57 PM Wayne Burdick I?ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 > antenna and a dragged counterpoise. In wide open spaces it?s a blast. But > urban settings with dogs, wire-eating cacti and overzealous Neighborhood > Watchers can distract from one?s radio experience. > > So, just for grins, I?d like to try something completely incognerdo: no > visible antenna. A small remotely tuned loop (say 12? diameter) would seem > to be the best choice, as it would fit entirely inside a small backpack. It > could have modest efficiency while not requiring a counterpoise wire. > Rigid 1? copper pipe formed in a square would be convenient to deploy. > > The loop would be only 6 to 8? from soft tissue, so you?d want to run QRP, > of course. OTOH, we?re talking about HF. A cellphone by your ear is > probably worse. > > Any other antenna suggestions? > > Wayne > N6KR > > > > ---- > elecraft.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to lee.buller at gmail.com From ardrhi at gmail.com Thu Jan 24 10:56:53 2019 From: ardrhi at gmail.com (Gwen Patton) Date: Thu, 24 Jan 2019 10:56:53 -0500 Subject: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack loop antenna? In-Reply-To: References: Message-ID: > > Jim Said: Cut a large double sided piece of double sided circuit board to > fit the > backpack. Etch the back side with a symmetric Hilbert curve split into 2 > columns fed > at the bottom center and the two columns attached at the top. Just don't accidentally etch a Do-Nha curve, or you might wind up with a summoning grid that attracts alien monstrosities from beyond spacetime that'll eat your brain. hi hi 73, Gwen, NG3P (In reference to this: http://radiopsychedelica.blogspot.com/2014/01/dho-na-curve-of-sleeper.html) On Thu, Jan 24, 2019 at 1:37 AM Jim Shepherd wrote: > Cut a large double sided piece of double sided circuit board to fit the > backpack. > Etch the back side with a symmetric Hilbert curve split into 2 columns fed > at the bottom center and the two columns attached at the top. Leave the > other side as a solid ground plane... It will take some work to make a > matching network, but the length of the 'curve' can easily be a half wave > on 20 meters. It will be directional to your rear as you walk along. > > Jim W6US > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to ardrhi at gmail.com > -- -+-+-+-+- Jenny Everywhere's Infinite: Quark Time http://quarktime.net From n6kr at elecraft.com Thu Jan 24 11:01:42 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Thu, 24 Jan 2019 08:01:42 -0800 Subject: [Elecraft] =?utf-8?q?Winter_Field_Day_=E2=80=94_this_weekend?= Message-ID: <4509C921-424C-4802-A348-446AB69C10DA@elecraft.com> If, like me, you feel like one field day a year is not enough, then by all means give Winter Field Day a try. This event has been going on for some time, with growing participation, and in most respects it?s very similar to the annual ARRL Field Day. (It is NOT a QRP-only event.) The exchange is the number of transmitters in your group, plus a class, and your ARRL section. Classes include indoor, outdoor, and home (I, O, and H). For example, operating outdoors with my single transmitter, I?ll be signing ?1O SCV? in CW, or on phone, ?one oh Santa Clara Valley.? The contest period is also similar. This year it starts at 1900 UTC on Saturday and goes through 1900 UTC on Sunday (2 PM U.S. Eastern time). Specific band segments are designated to help participants find each other. Given the time of year, I?d expect the low bands to be very active. WFD is a great opportunity to throw a wire in the tree and operate from a picnic table, tent, or RV, or operate from the comfort of home and give the shivering masses a few well-deserved QSOs. For a complete rules, go to winterfieldday.com. 73, Wayne N6KR ---- elecraft.com From kl7uw at acsalaska.net Thu Jan 24 12:01:58 2019 From: kl7uw at acsalaska.net (Edward R Cole) Date: Thu, 24 Jan 2019 08:01:58 -0900 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching Message-ID: <201901241702.x0OH20De031261@mail42c28.carrierzone.com> Dave, Pretty much no-issue if using the transverter interface at mw level as that causes no heating in transmit. TCXO-3 plus EXREF keeps 28 MHz within 2-Hz* and that is additive to transverter freq error not multiplicative. Xtal LO in UHF transverters are typically multiplied so using good temp practises or locking with a PLL are helpful. My 432 and 1296 transverters are locked to 10-MHz reference and K3 has EXREF so total drift is < +/- 2 Hz on 432 and 1296. If your K3 has the TCXO-1 with 5ppm then you may see freq offsets as high as 5*28 = 140 Hz. With TCXO-3 1ppm is 28 Hz and EXREF is 0.1ppm or 2.8 Hz. Actually the TCXO-3 runs nearer to 0.5ppm without reference correction. * http://www.kl7uw.com/K3EXREF.htm 73, Ed - KL7UW --------------------------------------------------------------- Yes. I'm a stickler for accuracy. It always bothered me that the so-called 'temperature compensated' LO in the K3 was not actively being steered by temperature compensation (i.e. I could only put static temperature offsets into the rig memory from the data sheet that came with the oscillator). That was a 'feature' that was never released. At HF frequencies, it was only an annoyance, but using UHF transverters, the error compounds (I'm using a crystal oven in my UHF transverter, but the lack of one in the K3 caused drifting). I use a Citizen watch with WWVB reception, so the time on my wrist is never more than 50 ms off. Anally yours, -- Dave, N8SBE 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: dubususa at gmail.com From keith at elecraft.com Thu Jan 24 13:14:40 2019 From: keith at elecraft.com (Keith Trinity WE6R) Date: Thu, 24 Jan 2019 10:14:40 -0800 Subject: [Elecraft] K3 KAT3 High SWR Issue Solved In-Reply-To: <2e7ec7ed-77b8-6d1e-ba9d-421b6780de81@embarqmail.com> References: <2e7ec7ed-77b8-6d1e-ba9d-421b6780de81@embarqmail.com> Message-ID: <8b75410d-f0a4-1b56-c4d4-7c0c809edf66@elecraft.com> Here is the history on the 8.215 trap on the KAT3 KANT3 boards. Overview; There is an 8.215 trap on the RF board, the trap on the KAT/KANT3 boards was an additional trap that was later found to be way overkill. On the KAT3 ATU, it is on the antenna side of the tuner, so it is subject to high SWR and can heat and burn. On the KANT3 you cannot cannot run with high SWR or the radio will back off, so not a problem on these boards. Early ATUs had a small coil L10 and single pink/brown capacitor C10. The cap can fail internally invisibly or catastrophically! The coil can get burnt. We went to a beefier coil and 2 small blue capacitors around 2010. It is rare, but these beefier components can also fail. _**In repairs,_ if it has the older weak components, we just pull the coil and insert jumper (no need to pull the capacitor as it is effectively now shorted). If it has the newer beefier components, we leave it alone unless burnt. The new KAT3"A" does not even have this trap, it came out with the K3"S". Keith WE6R From w1bnc52 at gmail.com Thu Jan 24 13:36:17 2019 From: w1bnc52 at gmail.com (Mike Keller) Date: Thu, 24 Jan 2019 13:36:17 -0500 Subject: [Elecraft] N0SS Zero Beat Kit Message-ID: I have never gotten around to installing the N0SS Zero Beat kit into my K2, and I probably never will. It should go to a good home instead of collecting dust here. So, in memory of Tom Hammond, I offer it for free including US postage. I ask that you promise not to let it sit on the shelf waiting forever for a "round2it", and send me a couple of pictures of the installation so I can see what I missed. Please respond off list. 73, Mike From w1bnc52 at gmail.com Thu Jan 24 13:43:20 2019 From: w1bnc52 at gmail.com (Mike Keller) Date: Thu, 24 Jan 2019 13:43:20 -0500 Subject: [Elecraft] FS: LP-Pan Message-ID: LP-PAN serial number 0083 Setup for use with K2 but includes all part and information to convert for use with K3. $125, (Pay Pal ok) Shipping via US Priority mail $13.65 Please contact off list Mike W1BNC W1BNC52 at gmail.com From bobdehaney at gmx.net Thu Jan 24 15:03:14 2019 From: bobdehaney at gmx.net (Bob DeHaney) Date: Thu, 24 Jan 2019 21:03:14 +0100 Subject: [Elecraft] K3 Bricked HELP!! Message-ID: <001001d4b41f$d73afc60$85b0f520$@gmx.net> Trouble started with no reception on 14 or 24 mHz. Reloaded configuration file which got reception back, but had a continuous ERR PTT. Attempted a complete firmware reload. K3 hung at MCU LD with all buttons inoperative. I then tried the recovery procedure in the K3 Utility Help section. The K3 comes on without backlight, and transmit blinking and MCU LD in the display. The K3 Utility cannot open the port. I?m stuck. This K3 has all K3S upgrades including USB, etc. I have also tried rebooting the computer with and without USB connected. Vy 73 de Bob DJ0RD/WU5T From nr4c at widomaker.com Thu Jan 24 15:11:50 2019 From: nr4c at widomaker.com (Nr4c) Date: Thu, 24 Jan 2019 15:11:50 -0500 Subject: [Elecraft] K3 Bricked HELP!! In-Reply-To: <001001d4b41f$d73afc60$85b0f520$@gmx.net> References: <001001d4b41f$d73afc60$85b0f520$@gmx.net> Message-ID: First. Look manual about this and follow directions there. Then call customer support at Elecraft. Sent from my iPhone ...nr4c. bill > On Jan 24, 2019, at 3:03 PM, Bob DeHaney wrote: > > Trouble started with no reception on 14 or 24 mHz. Reloaded configuration file which got reception back, but had a continuous ERR PTT. Attempted a complete firmware reload. K3 hung at MCU LD with all buttons inoperative. I then tried the recovery procedure in the K3 Utility Help section. The K3 comes on without backlight, and transmit blinking and MCU LD in the display. The K3 Utility cannot open the port. I?m stuck. This K3 has all K3S upgrades including USB, etc. I have also tried rebooting the computer with and without USB connected. > > > > Vy 73 de Bob DJ0RD/WU5T > > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From donwilh at embarqmail.com Thu Jan 24 15:34:05 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Thu, 24 Jan 2019 15:34:05 -0500 Subject: [Elecraft] K3 Bricked HELP!! In-Reply-To: <001001d4b41f$d73afc60$85b0f520$@gmx.net> References: <001001d4b41f$d73afc60$85b0f520$@gmx.net> Message-ID: <15924733-c316-2c8e-f4ae-378e7638b1c5@embarqmail.com> Bob, Since you had an ERR PTT indication in the midst of all this, unplug all cables except the USB cable and the Power Cable. Connect ANT1 to a dummy load. Then open K3 Utility and open its Help file. Look for "Force a Firmware Download" and follow those instructions (the instructions are also in the manual). After you are again up and running, plug each of your cables in one at a time and recycle power after each cable. If you see an ERR PTT, investigate that cable. It could be as simple as a closed paddle or key contact, or a mic cable that has PTT stuck on. Or it could be more complicated depending on what else you have in your station. ERR PTT means that either a key or a mic PTT closure was detected when the K3 was turned on. 73, Don W3FPR On 1/24/2019 3:03 PM, Bob DeHaney wrote: > Trouble started with no reception on 14 or 24 mHz. Reloaded configuration file which got reception back, but had a continuous ERR PTT. Attempted a complete firmware reload. K3 hung at MCU LD with all buttons inoperative. I then tried the recovery procedure in the K3 Utility Help section. The K3 comes on without backlight, and transmit blinking and MCU LD in the display. The K3 Utility cannot open the port. I?m stuck. This K3 has all K3S upgrades including USB, etc. I have also tried rebooting the computer with and without USB connected. From richarddw1945 at yahoo.com Thu Jan 24 15:41:41 2019 From: richarddw1945 at yahoo.com (RIchard Williams) Date: Thu, 24 Jan 2019 20:41:41 +0000 (UTC) Subject: [Elecraft] K3 Bricked HELP!! In-Reply-To: <15924733-c316-2c8e-f4ae-378e7638b1c5@embarqmail.com> References: <001001d4b41f$d73afc60$85b0f520$@gmx.net> <15924733-c316-2c8e-f4ae-378e7638b1c5@embarqmail.com> Message-ID: <1494562931.601343.1548362501079@mail.yahoo.com> Bob, If you are trying to use the USB port after a failed firmware update,? ?you need to either use the RS-232 port or take? the top cover off and the change the little switch on the board (can't remember the name of it)? the USB and RS 232 ports are on to USB position.? The you can use the USB port for a forced download. After you are done, move the switch back to the other position. Dick, K8ZTT? Sent from Yahoo Mail on Android On Thu, Jan 24, 2019 at 13:34, Don Wilhelm wrote: Bob, Since you had an ERR PTT indication in the midst of all this, unplug all cables except the USB cable and the Power Cable.? Connect ANT1 to a dummy load. Then open K3 Utility and open its Help file.? Look for "Force a Firmware Download" and follow those instructions (the instructions are also in the manual). After you are again up and running, plug each of your cables in one at a time and recycle power after each cable.? If you see an ERR PTT, investigate that cable.? It could be as simple as a closed paddle or key contact, or a mic cable that has PTT stuck on.? Or it could be more complicated depending on what else you have in your station. ERR PTT means that either a key or a mic PTT closure was detected when the K3 was turned on. 73, Don W3FPR On 1/24/2019 3:03 PM, Bob DeHaney wrote: > Trouble started with no reception on 14 or 24 mHz.? Reloaded configuration file which got reception back, but had a continuous ERR PTT.? Attempted a complete firmware reload.? K3 hung at MCU LD with all buttons inoperative.? I then tried the recovery procedure in the K3 Utility Help section.? The K3 comes on without backlight, and transmit blinking and MCU LD in the display.? The K3 Utility cannot open the port.? I?m stuck.? This K3 has all K3S upgrades including USB, etc. I have also tried rebooting the computer with and without USB connected. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to richarddw1945 at yahoo.com From bobdehaney at gmx.net Thu Jan 24 15:45:08 2019 From: bobdehaney at gmx.net (Bob DeHaney) Date: Thu, 24 Jan 2019 21:45:08 +0100 Subject: [Elecraft] K3 Bricked HELP!! Message-ID: <002001d4b425$b17f3300$147d9900$@gmx.net> Mike Cizek W?VTT had the answer, and I have a responding K3 again. Many THANKS. However more sleuthing is needed, the ERR PTT is back. We have a new kitty who is very curious, maybe he rearranged a cable? Vy 73 de Bob DJ0RD/WU5T From mark at mlb.net Thu Jan 24 15:55:12 2019 From: mark at mlb.net (Mark Bayern) Date: Thu, 24 Jan 2019 14:55:12 -0600 Subject: [Elecraft] K3 Bricked HELP!! In-Reply-To: <002001d4b425$b17f3300$147d9900$@gmx.net> References: <002001d4b425$b17f3300$147d9900$@gmx.net> Message-ID: I strongly suggest following Don's one cable at a time troubleshooting method. In my shack the error was caused when I pushed the paddles out of the way so I could place a notebook computer with the firmware files near the K3. After the update, I got the ERR PTT. Felt pretty dumb when I realized I caused it by pushing the paddles into another object. Is your cat taking a nap on top of the key? hi hi Mark AD5SS From donwilh at embarqmail.com Thu Jan 24 15:55:50 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Thu, 24 Jan 2019 15:55:50 -0500 Subject: [Elecraft] K3 Bricked HELP!! In-Reply-To: <1494562931.601343.1548362501079@mail.yahoo.com> References: <001001d4b41f$d73afc60$85b0f520$@gmx.net> <15924733-c316-2c8e-f4ae-378e7638b1c5@embarqmail.com> <1494562931.601343.1548362501079@mail.yahoo.com> Message-ID: <89b3ff58-f8dc-2941-3d3d-10345791ac5e@embarqmail.com> That is sometimes required, but not always. Only if the K3S or K3 with the KIO3B does not respond to the USB connection, then that can be used as a last resort. Often the problem is simply that the computer does not clearly identify the COM port associated with the K3 USB connection.? If that is the problem, I can help with identifying the proper COM port to put into K3 Utility. 73, Don W3FPR On 1/24/2019 3:41 PM, RIchard Williams wrote: > Bob, > > If you are trying to use the USB port after a failed firmware update,? > ?you need to either use the RS-232 port or take? the top cover off and > the change the little switch on the board (can't remember the name of > it)? the USB and RS 232 ports are on to USB position.? The you can use > the USB port for a forced download. After you are done, move the > switch back to the other position. > > Dick, K8ZTT > > Sent from Yahoo Mail on Android > > > On Thu, Jan 24, 2019 at 13:34, Don Wilhelm > wrote: > Bob, > > Since you had an ERR PTT indication in the midst of all this, > unplug all > cables except the USB cable and the Power Cable.? Connect ANT1 to a > dummy load. > > Then open K3 Utility and open its Help file.? Look for "Force a > Firmware > Download" and follow those instructions (the instructions are also in > the manual). > > After you are again up and running, plug each of your cables in > one at a > time and recycle power after each cable.? If you see an ERR PTT, > investigate that cable.? It could be as simple as a closed paddle > or key > contact, or a mic cable that has PTT stuck on.? Or it could be more > complicated depending on what else you have in your station. > > ERR PTT means that either a key or a mic PTT closure was detected > when > the K3 was turned on. > > 73, > Don W3FPR > > On 1/24/2019 3:03 PM, Bob DeHaney wrote: > > Trouble started with no reception on 14 or 24 mHz. Reloaded > configuration file which got reception back, but had a continuous > ERR PTT.? Attempted a complete firmware reload.? K3 hung at MCU LD > with all buttons inoperative. I then tried the recovery procedure > in the K3 Utility Help section.? The K3 comes on without > backlight, and transmit blinking and MCU LD in the display.? The > K3 Utility cannot open the port.? I?m stuck.? This K3 has all K3S > upgrades including USB, etc. I have also tried rebooting the > computer with and without USB connected. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to richarddw1945 at yahoo.com > > From bobdehaney at gmx.net Thu Jan 24 15:58:32 2019 From: bobdehaney at gmx.net (Bob DeHaney) Date: Thu, 24 Jan 2019 21:58:32 +0100 Subject: [Elecraft] K3 Brick HELP!! Message-ID: <002601d4b427$9131ef00$b395cd00$@gmx.net> PTT ERR problem solved. My face is deep, deep red. The heavy plastic floor mat had slid up over the PTT footswitch. I need to look at this KISS thing again. My thanks to all who replied and again to Don Wilhelm W3FPR who has helped me on this and other problems and solutions. Vy 73 de Bob DJ0RD/WU5T From nr4c at widomaker.com Thu Jan 24 16:02:44 2019 From: nr4c at widomaker.com (Nr4c) Date: Thu, 24 Jan 2019 16:02:44 -0500 Subject: [Elecraft] K3 Bricked HELP!! In-Reply-To: <002001d4b425$b17f3300$147d9900$@gmx.net> References: <002001d4b425$b17f3300$147d9900$@gmx.net> Message-ID: You have a stuck PTT. Pull all plugs except USB, antenna and power. ERR PTT should go away. Now plug cables in one at a time. You should find problem quickly. Sent from my iPhone ...nr4c. bill > On Jan 24, 2019, at 3:45 PM, Bob DeHaney wrote: > > Mike Cizek W?VTT had the answer, and I have a responding K3 again. Many THANKS. > > > > However more sleuthing is needed, the ERR PTT is back. We have a new kitty who is very curious, maybe he rearranged a cable? > > > > Vy 73 de Bob DJ0RD/WU5T > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From w1bnc52 at gmail.com Thu Jan 24 16:58:28 2019 From: w1bnc52 at gmail.com (Mike Keller) Date: Thu, 24 Jan 2019 16:58:28 -0500 Subject: [Elecraft] Zero Beat Kit is spoken for. Message-ID: <0D510ED3-D3EA-4C61-9EB3-F69E45831F6D@gmail.com> Now you will have no excuse to be off frequency From rmurphy10 at indy.rr.com Thu Jan 24 17:20:44 2019 From: rmurphy10 at indy.rr.com (r.murphy) Date: Thu, 24 Jan 2019 17:20:44 -0500 Subject: [Elecraft] Listing a K3S Message-ID: <0bc1a8f4-d000-c6cb-8c4a-9a5eed7b2a93@indy.rr.com> Greetings, I'd like to offer my K3S for sale. Should I send my ad to this address for posting on the reflector? Tnx, Bob W9RSM From w1bnc52 at gmail.com Thu Jan 24 17:24:58 2019 From: w1bnc52 at gmail.com (Mike Keller) Date: Thu, 24 Jan 2019 17:24:58 -0500 Subject: [Elecraft] Zero Beat Kit is spoken for. In-Reply-To: <0D510ED3-D3EA-4C61-9EB3-F69E45831F6D@gmail.com> References: <0D510ED3-D3EA-4C61-9EB3-F69E45831F6D@gmail.com> Message-ID: <5036A2F9-C5B8-4F67-AC1C-3246743AA44E@gmail.com> Just to clarify Steve,KY7K was the winner > On Jan 24, 2019, at 4:58 PM, Mike Keller wrote: > > Now you will have no excuse to be off frequency From rmurphy10 at indy.rr.com Thu Jan 24 18:06:25 2019 From: rmurphy10 at indy.rr.com (r.murphy) Date: Thu, 24 Jan 2019 18:06:25 -0500 Subject: [Elecraft] F/S: K3S Message-ID: <14ae7c56-8527-52f9-d72e-5b4654b7dae8@indy.rr.com> F/S: Elecraft K3S SN 11707 equipped with the following: KPA3A=F 100W upgrade KFL3A 2.7Khz Elecraft filter E850323-F 5PPPM Oscillator KAT3A-Antenna Tuner MH4 Handheld Microphone (unused) KFL3B-FM-IR-F FM-Bandwith roofing filter, factory installed. KBPF3A General Coverage RX Filter Module, factory installed. The radio is only 6 months old and comes with with factory power cable, USB cable, unused hand mic & manual. No blems , functional issues or nicotine; Looks new. I paid $3530.00 for this unit six months ago. Price: $3053.00 shipped in the factory shipping carton. Thanks for reading; Bob W9RSM From n3eta at coastside.net Thu Jan 24 18:11:32 2019 From: n3eta at coastside.net (Ron Genovesi) Date: Thu, 24 Jan 2019 15:11:32 -0800 Subject: [Elecraft] KPA-1500 w/ Kenwood TS-890S Message-ID: Has anyone used a KPA-1500 with a Kenwood TS-890S or TS-990S? If so do you have any advise on settings for both the KPA-1500 and the Kenwood TS-890/990 Ron Genovesi n3eta at coastside.net From gregg.w6izt1 at gmail.com Thu Jan 24 18:16:48 2019 From: gregg.w6izt1 at gmail.com (gregg.w6izt1 at gmail.com) Date: Thu, 24 Jan 2019 18:16:48 -0500 Subject: [Elecraft] OT WTB SDR-IQ Message-ID: <01d101d4b43a$e1c7d660$a5578320$@gmail.com> Looking for an SDR-IQ in good working condition. Gregg W6IZT From c-hawley at illinois.edu Thu Jan 24 19:33:54 2019 From: c-hawley at illinois.edu (hawley, charles j jr) Date: Fri, 25 Jan 2019 00:33:54 +0000 Subject: [Elecraft] K3 Bricked HELP!! In-Reply-To: <002001d4b425$b17f3300$147d9900$@gmx.net> References: <002001d4b425$b17f3300$147d9900$@gmx.net> Message-ID: <87201180-0748-4043-A7E7-B2AC6AA225EC@illinois.edu> Cats chew on cables sometimes Chuck Jack KE9UW Sent from my iPhone, cjack > On Jan 24, 2019, at 2:45 PM, Bob DeHaney wrote: > > Mike Cizek W?VTT had the answer, and I have a responding K3 again. Many THANKS. > > > > However more sleuthing is needed, the ERR PTT is back. We have a new kitty who is very curious, maybe he rearranged a cable? > > > > Vy 73 de Bob DJ0RD/WU5T > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to c-hawley at illinois.edu From n6tv at arrl.net Thu Jan 24 21:05:22 2019 From: n6tv at arrl.net (Bob Wilson, N6TV) Date: Thu, 24 Jan 2019 18:05:22 -0800 Subject: [Elecraft] KPA-1500 w/ Kenwood TS-890S In-Reply-To: References: Message-ID: (This post may not format well due to limitations of this Reflector [no HTML support].) The menu settings for connecting a TS-590SG, TS-890S, or TS-990S to a KPA1500 (or KPA500) are all very similar. An S-BOX + stock cables can provide the required silent keying interface (plus PC CW / FSK keying), or you can solder your own interface cables, as follows: 1. Connect a standard USB-A to USB-B cable between to the Kenwood USB connector and the PC. Assuming correct drivers are installed, this creates a virtual serial port you can use with your logging program to control the rig at 115200 baud (Kenwood default). The KPA1500 can use the 9-pin COM port on the back of the radio to track the rig's frequency automatically at 9600 baud (typically), with no transmission required to change bands. 2. Construct a serial cable with a female DE-9 connector on one end, and a 3.5mm TRS (stereo) plug on the other, for the KPA1500 XCVR SERIAL jack. An Elecraft KXSER cable WILL NOT WORK (unless you extend it with a DE-9 M/F null-modem cable or adapter). Assuming no KXSER / NULL Modem Cable is available: Wire DE-9F Pin 2 to TIP Wire DE-9F Pin 3 to RING Wire DE-9F Pin 5 to Shield (or shield to shield) 3. Construct an amplifier keying cable for the Kenwood REMOTE jack using a 7-pin DIN plug: Pin 2: To shield of RCA plug Pin 7: To center pin of RCA plug (for silent keying) 4. In the KPA1500 menu, set: RADIO TYPE: SERIAL SERIAL SPEED XCVR: 9600 RADIO POLL: ON (should also work with POLL OFF if a logging program is running or AUTO INFO mode is enabled in the Kenwood ) 5. In the TS-590SG Menu, set: 59 HF LINEAR AMPLIFIER CONTROL RELAY to 4 (for silent high-speed keying on REMOTE pin 7) 60 50 MHZ LINEAR AMPLIFIER CONTROL RELAY to 4 67 COM PORT BAUDRATE: 9600 (default) In the TS-890 Menu, set: 7-00 Baud Rate (COM Port): 9600 (default) In the Linear Amplifier Menu, set: Keying Logic: Active Low TX DELAY: ON TX DELAY TIME (CW/FSK/PSK): 5 ms TX DELAY TIME (SSB/AM/FM): 5 ms Internal Relay Control: OFF In the TS-990 Advanced Menu, set: 7-00 Baud Rate (COM Port): 9600 (default) 11 Linear Amplifier Control (HF MHz Band): Active Low 12 Linear Amplifier Control (50 MHz Band): Active Low 6. Once the menus are set, with both amp. and radio powered off, connect the 3.5mm TRS to DE-9F cable between the KPA1500 XCVR SERIAL jack (not to be confused with the TUNE jack just below it), and connect the RCA to DIN-7 cable between the KPA1500 KEY IN jack and the Kenwood REMOTE jack. 7. Power up the radio first, then the amplifier, and it should track the band of the radio automatically 8. (Optional) connect a 3.5mm TRS to 1/4" TRS stereo cable between the KPA1500 TUNE connector and the Kenwood KEY jack (or splitter) and set KPA1500 menu ATU XCVR KEY to ON to let the amp. key the Kenwood whenever you tap the KPA1500 TUNE button. These settings assume you want to use Pin 7 on the REMOTE connector for silent high-speed keying, instead of keying on pin 4 with a noisy relay inside the Kenwood transceiver. I've also skipped any ALC connection and adjustment, which is available if needed. 73, Bob, N6TV https://bit.ly/S-BOX https://bit.ly/Y-BOX On Thu, Jan 24, 2019 at 3:12 PM Ron Genovesi wrote: > Has anyone used a KPA-1500 with a Kenwood TS-890S or TS-990S? > If so do you have any advise on settings for both the KPA-1500 and the > Kenwood TS-890/990 > > Ron Genovesi > n3eta at coastside.net > > From n4zr at comcast.net Thu Jan 24 22:01:28 2019 From: n4zr at comcast.net (N4ZR) Date: Thu, 24 Jan 2019 22:01:28 -0500 Subject: [Elecraft] Trying to use KPA-1500 on 160 Message-ID: <597b9c49-0718-1939-f9b6-b1fe86d35ea5@comcast.net> New owner trying to get ready for the CQWW 160 contest.? Rig is a K3 with the Aux cable connected.? When the amp is in Standby mode, using a dummy load, I'm readily able to deliver 30 watts CW (or 50 or 100) on 160 with the tuner bypassed or in. However, as soon as I switch the amp to Operate, and send my first dash, I get a hard fault with the LCD message input power 67 watts. I'm guessing it might be a K3 adjustment, but I don't know where to look. Any advice much appreciated! 73, Pete N4ZR Check out the Reverse Beacon Network at , now spotting RTTY activity worldwide. For spots, please use your favorite "retail" DX cluster. From john at kk9a.com Thu Jan 24 22:29:39 2019 From: john at kk9a.com (john at kk9a.com) Date: Thu, 24 Jan 2019 22:29:39 -0500 Subject: [Elecraft] Trying to use KPA-1500 on 160 Message-ID: <002301d4b45e$3473b230$9d5b1690$@com> Turn down the K3 power with the amp set on Operate. John KK9A N4ZR n4zr at comcast.net New owner trying to get ready for the CQWW 160 contest. Rig is a K3 with the Aux cable connected. When the amp is in Standby mode, using a dummy load, I'm readily able to deliver 30 watts CW (or 50 or 100) on 160 with the tuner bypassed or in. However, as soon as I switch the amp to Operate, and send my first dash, I get a hard fault with the LCD message input power 67 watts. I'm guessing it might be a K3 adjustment, but I don't know where to look. Any advice much appreciated! 73, Pete N4ZR From cx6vm.jorge at gmail.com Thu Jan 24 22:41:14 2019 From: cx6vm.jorge at gmail.com (Jorge Diez (CX6VM-CW5W)) Date: Fri, 25 Jan 2019 00:41:14 -0300 Subject: [Elecraft] LP-100 software Message-ID: Hello Anyone use a server/client software to see remotely the measurements of LP-100 digital wattmeter? (SWR and PWR) What are you using? 73, Jorge CX6VM/CW5W Enviado desde mi iPhone From wa8hgx at gmail.com Thu Jan 24 22:59:46 2019 From: wa8hgx at gmail.com (BRUCE WW8II) Date: Thu, 24 Jan 2019 22:59:46 -0500 Subject: [Elecraft] Trying to use KPA-1500 on 160 In-Reply-To: <002301d4b45e$3473b230$9d5b1690$@com> References: <002301d4b45e$3473b230$9d5b1690$@com> Message-ID: Pete I run my KPA1500 on 160 mtrs , with about 20 to 30 watts of drive from my K3s which gives me 1100 to 1450 watts out.. You need to be sure to use the auto tuner in the KPA1500 and be sure the SWR is low enough to operate . If the SWR is to high, or you over drive the amp, the KPA 1500 amp will go to fault. Try starting with a lower drive of 12 to 15 watts for the first pass with the auto tuner. Oh and be sure the RF CONNECTORS ARE ALL GOOD AND TIGHT.. A POOR CONNECTION OR A BAD CONNECTOR WILL CAUSE A FAULT WHEN HIGH WATTAGE IS APPLIED. Bruce WW8II On Thu, Jan 24, 2019 at 10:30 PM wrote: > Turn down the K3 power with the amp set on Operate. > > John KK9A > > > N4ZR n4zr at comcast.net > > New owner trying to get ready for the CQWW 160 contest. Rig is a K3 > with the Aux cable connected. When the amp is in Standby mode, using a > dummy load, I'm readily able to deliver 30 watts CW (or 50 or 100) on > 160 with the tuner bypassed or in. However, as soon as I switch the amp > to Operate, and send my first dash, I get a hard fault with the LCD > message input power 67 watts. > > I'm guessing it might be a K3 adjustment, but I don't know where to > look. Any advice much appreciated! > > 73, Pete N4ZR > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wa8hgx at gmail.com > From nr4c at widomaker.com Thu Jan 24 23:16:57 2019 From: nr4c at widomaker.com (Nr4c) Date: Thu, 24 Jan 2019 23:16:57 -0500 Subject: [Elecraft] Trying to use KPA-1500 on 160 In-Reply-To: <597b9c49-0718-1939-f9b6-b1fe86d35ea5@comcast.net> References: <597b9c49-0718-1939-f9b6-b1fe86d35ea5@comcast.net> Message-ID: <5E9F456B-BB8D-4C8F-87A2-9F12EC814DC7@widomaker.com> Pete I have. KPA500. I can set power out to 100 watts for K3S and amp in Standby. When I switch amp to Operate, I set power to about 20 watts. Next time I switch to Operate the J3S drops to the 20 watt setting. This is a per band setting. There may be a Config menu setting for this but I?m not sure. Good luck. Sent from my iPhone ...nr4c. bill > On Jan 24, 2019, at 10:01 PM, N4ZR wrote: > > New owner trying to get ready for the CQWW 160 contest. Rig is a K3 with the Aux cable connected. When the amp is in Standby mode, using a dummy load, I'm readily able to deliver 30 watts CW (or 50 or 100) on 160 with the tuner bypassed or in. However, as soon as I switch the amp to Operate, and send my first dash, I get a hard fault with the LCD message input power 67 watts. > > I'm guessing it might be a K3 adjustment, but I don't know where to look. Any advice much appreciated! > > 73, Pete N4ZR > Check out the Reverse Beacon Network > at , now > spotting RTTY activity worldwide. > For spots, please use your favorite > "retail" DX cluster. > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From jackbrindle at me.com Fri Jan 25 00:13:06 2019 From: jackbrindle at me.com (Jack Brindle) Date: Thu, 24 Jan 2019 21:13:06 -0800 Subject: [Elecraft] Trying to use KPA-1500 on 160 In-Reply-To: <597b9c49-0718-1939-f9b6-b1fe86d35ea5@comcast.net> References: <597b9c49-0718-1939-f9b6-b1fe86d35ea5@comcast.net> Message-ID: <70E24EC6-1255-4200-A00C-685DFB6F37F7@me.com> Pete; You should set your K3 so that it automatically adjusts power when the KPA1500 goes into OPER mode. To do this, go into the Config menu, the PWR SET entry, and set it to PER-BAND as described on page 63 of the K3S Operating Manual, rev A1. At this point you can switch the KPA into OPER mode, then adjust the power level to make the KPA happy. Do this for each band - in this case when on 160 meters. Good luck in CQWW 160, be sure to work lots of my fellow NCCCers! 73, Jack, W6FB > On Jan 24, 2019, at 7:01 PM, N4ZR wrote: > > New owner trying to get ready for the CQWW 160 contest. Rig is a K3 with the Aux cable connected. When the amp is in Standby mode, using a dummy load, I'm readily able to deliver 30 watts CW (or 50 or 100) on 160 with the tuner bypassed or in. However, as soon as I switch the amp to Operate, and send my first dash, I get a hard fault with the LCD message input power 67 watts. > > I'm guessing it might be a K3 adjustment, but I don't know where to look. Any advice much appreciated! > > 73, Pete N4ZR > Check out the Reverse Beacon Network > at , now > spotting RTTY activity worldwide. > For spots, please use your favorite > "retail" DX cluster. > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jackbrindle at me.com From bobdehaney at gmx.net Fri Jan 25 03:33:40 2019 From: bobdehaney at gmx.net (Bob DeHaney) Date: Fri, 25 Jan 2019 09:33:40 +0100 Subject: [Elecraft] K3 Bricked HELP!! Message-ID: <000001d4b488$acef68b0$06ce3a10$@gmx.net> Again thanks to all who replied. Mike Cizek W?VTT reminded me of the little USB-USB/RS232 switch on the KIO3B to force a firmware load. This worked immediately. I posted my BAD on the PTT floor switch (head hanging, red face) which caused the ERR PTT. Several guys pointed me in the right direction to isolate and correct the ERR PTT. As to the cause of the original problem with no reception on 14 and 24mHz, no idea. It went away when I loaded a configuration file. Boots, our new kitty, is innocent in this case and I apologized to him. Boots has not apologized for bringing in a live mouse, chasing it behind the TV and pulling the SAT antenna cable out. Vy 73 de Bob DJ0RD/WU5T From hs0zed at gmail.com Fri Jan 25 07:24:39 2019 From: hs0zed at gmail.com (Martin Sole) Date: Fri, 25 Jan 2019 20:24:39 +0800 Subject: [Elecraft] LP-100 software In-Reply-To: References: Message-ID: <918a99eb-ef33-b780-4ccf-da355b95d2df@gmail.com> I use the free version of VSPE (Virtual Serial Ports Emulator). Use the TCP Server and TCP Client. You don't need to specify the Interface IP in the server setup. Just point the TCP Client tothe IP address of the machine running the TCP server and make sure the port is the same on both. If you have any firewalls operating between the machines you may need to open the ports that you use in the TCP Client Server. Works for me. Martin, HS0ZED On 25/01/2019 11:41, Jorge Diez (CX6VM-CW5W) wrote: > Hello > > Anyone use a server/client software to see remotely the measurements of LP-100 digital wattmeter? (SWR and PWR) > > What are you using? > > 73, > Jorge > CX6VM/CW5W > > Enviado desde mi iPhone > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to hs0zed at gmail.com From n4zr at comcast.net Fri Jan 25 08:27:31 2019 From: n4zr at comcast.net (N4ZR) Date: Fri, 25 Jan 2019 08:27:31 -0500 Subject: [Elecraft] KPA 1500 160 Thanks! Message-ID: <04d8b962-1c7c-5b7f-26b8-d4c102b0b606@comcast.net> Thanks to everyone who responded.? I've got it now. -- 73, Pete N4ZR Check out the Reverse Beacon Network at , now spotting RTTY activity worldwide. For spots, please use your favorite "retail" DX cluster. From cx6vm.jorge at gmail.com Fri Jan 25 11:34:11 2019 From: cx6vm.jorge at gmail.com (Jorge CX6VM) Date: Fri, 25 Jan 2019 13:34:11 -0300 Subject: [Elecraft] LP-100 software In-Reply-To: <918a99eb-ef33-b780-4ccf-da355b95d2df@gmail.com> References: <918a99eb-ef33-b780-4ccf-da355b95d2df@gmail.com> Message-ID: Thanks Martin Will try it 73, Jorge Enviado desde mi iPad El 25 ene. 2019, a la(s) 09:24, Martin Sole escribi?: > I use the free version of VSPE (Virtual Serial Ports Emulator). Use the TCP Server and TCP Client. You don't need to specify the Interface IP in the server setup. Just point the TCP Client tothe IP address of the machine running the TCP server and make sure the port is the same on both. > > If you have any firewalls operating between the machines you may need to open the ports that you use in the TCP Client Server. > > Works for me. > > Martin, HS0ZED > > > >> On 25/01/2019 11:41, Jorge Diez (CX6VM-CW5W) wrote: >> Hello >> >> Anyone use a server/client software to see remotely the measurements of LP-100 digital wattmeter? (SWR and PWR) >> >> What are you using? >> >> 73, >> Jorge >> CX6VM/CW5W >> >> Enviado desde mi iPhone >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to hs0zed at gmail.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to cx6vm.jorge at gmail.com From d3j452 at gmail.com Fri Jan 25 12:17:39 2019 From: d3j452 at gmail.com (Dave G.) Date: Fri, 25 Jan 2019 09:17:39 -0800 Subject: [Elecraft] (KX3/2) Backpack loop thread Message-ID: There is no reason to limit the loop to a single turn. A 3 turn 1ft diameter loop should be tuneable to 40M ! RG58 or simiar? Dave G. KK7SS From n8sbe at arrl.net Fri Jan 25 12:40:07 2019 From: n8sbe at arrl.net (Dave New, N8SBE) Date: Fri, 25 Jan 2019 10:40:07 -0700 Subject: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching Message-ID: <20190125104007.1fa1e31b6b6b329ecc65be958babcc1f.98354b373a.wbe@email09.godaddy.com> Don, Ed, Wes, et al, Thanks, guys, I misspoke. I was thinking of the old multiplicative CW-only designs that have been floating around, but of course, the Elecraft ones don't do that. My bad. Yes, it would be nice to sync the Elecraft transverters to a 10 MHz signal. Which ones do you guys have that have a PLL-locked 10 MHz ref in? Don, I do have the TCXO-3 and also the XREF in my K3S. It works very nice with my Leo Bodnar GPS 10 MHz frequency source. 73, -- Dave, N8SBE From k6dgw at foothill.net Fri Jan 25 14:01:04 2019 From: k6dgw at foothill.net (Fred Jensen) Date: Fri, 25 Jan 2019 11:01:04 -0800 Subject: [Elecraft] (KX3/2) Backpack loop thread In-Reply-To: References: Message-ID: <1b7ca9c7-9e88-8725-5d76-e4f0d45bf3f8@foothill.net> Hmmm ... I use an Alexloop with my K2.? Since the real part of the feed point impedance of a single-turn small mag loop is so low, one design goal is to reduce the resistance of the the loop parts ... larger conductor, butterfly capacitors with no moving connection, etc.? Do the multiple turns increase the radiation efficiency enough to outweigh the increased I squared R loss of the longer conductor? Ignoring that loss for a moment, what is the effect of multiple turns?? Do multiple turns affect the bandwidth?? Just curious, small effective antennas are of interest now that I've moved from a 5 acre "farm" in Auburn CA to a suburban house/lot in Sparks NV [with a somewhat benevolent and benign HOA]. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 1/25/2019 9:17 AM, Dave G. wrote: > There is no reason to limit the loop to a single turn. > A 3 turn 1ft diameter loop should be tuneable to 40M ! > RG58 or simiar? > > Dave G. > KK7SS > From lee.buller at gmail.com Fri Jan 25 15:47:51 2019 From: lee.buller at gmail.com (Leroy Buller) Date: Fri, 25 Jan 2019 14:47:51 -0600 Subject: [Elecraft] Auto spot Message-ID: Works fantastic. Never read about this. Thanks for the info. Lee From a.durbin at msn.com Fri Jan 25 16:07:34 2019 From: a.durbin at msn.com (Andy Durbin) Date: Fri, 25 Jan 2019 21:07:34 +0000 Subject: [Elecraft] LP-100 software Message-ID: "What are you using? I have used LP-100 VCP and TeamViewer but my LP-100A is usually connected to my data logger and I can use TeamViewer to read that too. Any k3wyc From K1ND at comcast.net Fri Jan 25 16:35:18 2019 From: K1ND at comcast.net (Jan) Date: Fri, 25 Jan 2019 16:35:18 -0500 Subject: [Elecraft] Latest Elecraft NEWS Message-ID: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> Err, WAYNE? - - there is some question as to the contents of the latest E-NEWS? **** You write: armed with a dozen or so crusty FT-243 crystals for my Heath HW-16 .... (Away from "where" was a poorly answered question, as my Hallicrafters receiver dial wasn't exactly digital.) QUESTION: Did your Heathkit HW-16 not have a tune-able receiver? So, why the Hallicrafters mention ?? Then you continue with:?? Fortunately I soon acquired an outboard VFO, a life-changing addition to my station. Jealous friends doubled up on their paper routes to pay for their own. Girls suddenly paid more attention to me. QUESTION: What do an outboard VFO? and? ... /Girls suddenly paid more attention to me/.? .... have to do with CW?? Nice write-up about CW Spotting Cheers, Jan K1ND **** I've read many a paper in my role as a professor ;-) From donwilh at embarqmail.com Fri Jan 25 16:52:51 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Fri, 25 Jan 2019 16:52:51 -0500 Subject: [Elecraft] Latest Elecraft NEWS In-Reply-To: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> References: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> Message-ID: <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> Jan, The HW-16 was a crystal controlled transmitter only - no receive capability. Yes, there was a time when transceivers did not exist, and many transmitters did not come with a VFO. Many VFOs were external to the transmitter. 73, Don W3FPR On 1/25/2019 4:35 PM, Jan wrote: > Err, WAYNE? - - there is some question as to the contents of the latest > E-NEWS? **** > > You write: armed with a dozen or so crusty FT-243 crystals for my Heath > HW-16 .... (Away from "where" was a poorly answered question, as my > Hallicrafters receiver dial wasn't exactly digital.) > > QUESTION: Did your Heathkit HW-16 not have a tune-able receiver? So, why > the Hallicrafters mention ?? > > Then you continue with:?? Fortunately I soon acquired an outboard VFO, a > life-changing addition to my station. Jealous friends doubled up on > their paper routes to pay for their own. Girls suddenly paid more > attention to me. > > QUESTION: What do an outboard VFO? and? ... /Girls suddenly paid more > attention to me/.? .... have to do with CW?? > > Nice write-up about CW Spotting > > Cheers, Jan K1ND > > **** I've read many a paper in my role as a professor ;-) > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com From mike.ab3ap at gmail.com Fri Jan 25 16:57:56 2019 From: mike.ab3ap at gmail.com (Mike Markowski) Date: Fri, 25 Jan 2019 16:57:56 -0500 Subject: [Elecraft] Latest Elecraft NEWS In-Reply-To: <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> References: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> Message-ID: <369944c9-1246-86d0-def0-74abd0de0702@gmail.com> My old time shack, like Don describes, which never fails to make me better appreciate my K3: http://udel.edu/~mm/ham/skcc/ot2.jpg 73, Mike ab3ap On 1/25/19 4:52 PM, Don Wilhelm wrote: > [...] > Yes, there was a time when transceivers did not exist, and many > transmitters did not come with a VFO.? Many VFOs were external to the > transmitter. > > 73, > Don W3FPR > > On 1/25/2019 4:35 PM, Jan wrote: >> [...] >> QUESTION: Did your Heathkit HW-16 not have a tune-able receiver? So, >> why the Hallicrafters mention ?? >> [...] From k9jri at mac.com Fri Jan 25 17:04:36 2019 From: k9jri at mac.com (Michael Blake) Date: Fri, 25 Jan 2019 17:04:36 -0500 Subject: [Elecraft] Latest Elecraft NEWS In-Reply-To: <369944c9-1246-86d0-def0-74abd0de0702@gmail.com> References: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> <369944c9-1246-86d0-def0-74abd0de0702@gmail.com> Message-ID: Wow, modern stuff! Mine was a Heathkit AT-1, AC-1 and a BC348Q. Michael Blake k9jri at mac.com > On Jan 25, 2019, at 16:57, Mike Markowski wrote: > > My old time shack, like Don describes, which never fails to make me better appreciate my K3: > > http://udel.edu/~mm/ham/skcc/ot2.jpg > > 73, > Mike ab3ap > >> On 1/25/19 4:52 PM, Don Wilhelm wrote: >> [...] >> Yes, there was a time when transceivers did not exist, and many transmitters did not come with a VFO. Many VFOs were external to the transmitter. >> 73, >> Don W3FPR >>> On 1/25/2019 4:35 PM, Jan wrote: >>> [...] >>> QUESTION: Did your Heathkit HW-16 not have a tune-able receiver? So, why the Hallicrafters mention ?? >>> [...] > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9jri at mac.com From ww3s at zoominternet.net Fri Jan 25 17:22:38 2019 From: ww3s at zoominternet.net (WW3S) Date: Fri, 25 Jan 2019 17:22:38 -0500 Subject: [Elecraft] Latest Elecraft NEWS In-Reply-To: <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> References: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> Message-ID: The HW-16 was indeed a transceiver.....Xtal controlled transmit, and 250kc of receive on 80/40/15, the novice bands at the time..... Sent from my iPad > On Jan 25, 2019, at 4:52 PM, Don Wilhelm wrote: > > Jan, > > The HW-16 was a crystal controlled transmitter only - no receive capability. > > Yes, there was a time when transceivers did not exist, and many transmitters did not come with a VFO. Many VFOs were external to the transmitter. > > 73, > Don W3FPR > >> On 1/25/2019 4:35 PM, Jan wrote: >> Err, WAYNE - - there is some question as to the contents of the latest E-NEWS **** >> You write: armed with a dozen or so crusty FT-243 crystals for my Heath HW-16 .... (Away from "where" was a poorly answered question, as my Hallicrafters receiver dial wasn't exactly digital.) >> QUESTION: Did your Heathkit HW-16 not have a tune-able receiver? So, why the Hallicrafters mention ?? >> Then you continue with: Fortunately I soon acquired an outboard VFO, a life-changing addition to my station. Jealous friends doubled up on their paper routes to pay for their own. Girls suddenly paid more attention to me. >> QUESTION: What do an outboard VFO and ... /Girls suddenly paid more attention to me/. .... have to do with CW?? >> Nice write-up about CW Spotting >> Cheers, Jan K1ND >> **** I've read many a paper in my role as a professor ;-) >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donwilh at embarqmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to ww3s at zoominternet.net From jackbrindle at me.com Fri Jan 25 17:53:40 2019 From: jackbrindle at me.com (Jack Brindle) Date: Fri, 25 Jan 2019 14:53:40 -0800 Subject: [Elecraft] Latest Elecraft NEWS In-Reply-To: <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> References: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> Message-ID: <067A8A4B-FA22-45DF-BA63-018E70F34289@me.com> My friend Don has a slightly faulty memory. The DX-60B (which I still have) was just a transmitter, no rx. It worked well with the SB-303. The HW-16 did indeed have a receiver which was definitely tunable. Both needed the HG-10 VFO to get away from being rock-bound. Perhaps it was the nerd girls who started paying attention? 73! Jack, W6FB > On Jan 25, 2019, at 1:52 PM, Don Wilhelm wrote: > > Jan, > > The HW-16 was a crystal controlled transmitter only - no receive capability. > > Yes, there was a time when transceivers did not exist, and many transmitters did not come with a VFO. Many VFOs were external to the transmitter. > > 73, > Don W3FPR > > On 1/25/2019 4:35 PM, Jan wrote: >> Err, WAYNE - - there is some question as to the contents of the latest E-NEWS **** >> You write: armed with a dozen or so crusty FT-243 crystals for my Heath HW-16 .... (Away from "where" was a poorly answered question, as my Hallicrafters receiver dial wasn't exactly digital.) >> QUESTION: Did your Heathkit HW-16 not have a tune-able receiver? So, why the Hallicrafters mention ?? >> Then you continue with: Fortunately I soon acquired an outboard VFO, a life-changing addition to my station. Jealous friends doubled up on their paper routes to pay for their own. Girls suddenly paid more attention to me. >> QUESTION: What do an outboard VFO and ... /Girls suddenly paid more attention to me/. .... have to do with CW?? >> Nice write-up about CW Spotting >> Cheers, Jan K1ND >> **** I've read many a paper in my role as a professor ;-) >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donwilh at embarqmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jackbrindle at me.com From k6dgw at foothill.net Fri Jan 25 18:14:09 2019 From: k6dgw at foothill.net (Fred Jensen) Date: Fri, 25 Jan 2019 15:14:09 -0800 Subject: [Elecraft] Latest Elecraft NEWS In-Reply-To: References: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> Message-ID: Ummm ... in the general case, it transmitted and received so it technically was a "transceiver" just as the Gonset Communicator's were "transceivers."? Newer folk likely think "transceiver" means "one knob." Weren't all the Heath "Hot Waters" both TX and RX? 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 1/25/2019 2:22 PM, WW3S wrote: > The HW-16 was indeed a transceiver.....Xtal controlled transmit, and 250kc of receive on 80/40/15, the novice bands at the time..... > > Sent from my iPad > > From n6kr at elecraft.com Fri Jan 25 18:14:44 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Fri, 25 Jan 2019 15:14:44 -0800 Subject: [Elecraft] Latest Elecraft NEWS In-Reply-To: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> References: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> Message-ID: <3C58675C-077D-4F7C-8D43-720CA95E1DDE@elecraft.com> Jan wrote: > Nice write-up about CW Spotting... Thanks. > You write: armed with a dozen or so crusty FT-243 crystals for my Heath HW-16 .... (Away from "where" was a poorly answered question, as my Hallicrafters receiver dial wasn't exactly digital.) > > QUESTION: Did your Heathkit HW-16 not have a tune-able receiver? > Out-of-order editing on my part. (Thank you for closely reading your Elecraft News.) The HW-16 does have a receiver, of course. > Then you continue with: Fortunately I soon acquired an outboard VFO, a life-changing addition to my station. > > QUESTION: What does an outboard VFO .... have to do with CW?? I could then answer stations on their frequency rather than use crystals. Major step forward. > Jealous friends doubled up on their paper routes to pay for their own. Girls suddenly paid more attention to me. [What??] Remember: I was 15 and had a nuanced imagination. > So, why the Hallicrafters mention ?? I later acquired a Hallicrafters HT-37 and SX-111 receiver. Dial accuracy was one of their weak points. Wayne N6K From k6dgw at foothill.net Fri Jan 25 18:42:06 2019 From: k6dgw at foothill.net (Fred Jensen) Date: Fri, 25 Jan 2019 15:42:06 -0800 Subject: [Elecraft] Latest Elecraft NEWS In-Reply-To: <067A8A4B-FA22-45DF-BA63-018E70F34289@me.com> References: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> <067A8A4B-FA22-45DF-BA63-018E70F34289@me.com> Message-ID: <50c43dea-41df-bd89-b38a-e0c57f6532fe@foothill.net> "Nerd Girls" was an oxymoron when I was in high school.? At a drive-in movie in the family car, and not yet having made "The move" to the back seat, she pointed to the Gonset converter on the steering column and asked, "What's that?"? I said, in my most professional voice, "That's part of the two-way radio, here is the microphone for the transmitter in the trunk" and then pressed PTT, the PE-103 spun up and I identified.? She seemed satisfied.? Alas, the corona ball on the top of the 8' whip had come off, the TX created a lively electrical display from the pointy end, the manager showed up at the car, and "The move" never happened that night. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 1/25/2019 2:53 PM, Jack Brindle via Elecraft wrote: > Perhaps it was the nerd girls who started paying attention? > > 73! > Jack, W6FB > From merv.k9fd at gmail.com Fri Jan 25 18:55:21 2019 From: merv.k9fd at gmail.com (K9FD) Date: Fri, 25 Jan 2019 13:55:21 -1000 Subject: [Elecraft] Latest Elecraft NEWS In-Reply-To: <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> References: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> Message-ID: <9d2099fe-8ab4-f322-b3c1-bc19ed4de57d@gmail.com> HW-16 has a strange large knob and dial readout for a transmitter only, check again. Merv K9FD > Jan, > > The HW-16 was a crystal controlled transmitter only - no receive > capability. > > Yes, there was a time when transceivers did not exist, and many > transmitters did not come with a VFO.? Many VFOs were external to the > transmitter. > > 73, > Don W3FPR > > On 1/25/2019 4:35 PM, Jan wrote: >> Err, WAYNE? - - there is some question as to the contents of the >> latest E-NEWS? **** >> >> You write: armed with a dozen or so crusty FT-243 crystals for my >> Heath HW-16 .... (Away from "where" was a poorly answered question, >> as my Hallicrafters receiver dial wasn't exactly digital.) >> >> QUESTION: Did your Heathkit HW-16 not have a tune-able receiver? So, >> why the Hallicrafters mention ?? >> >> Then you continue with:?? Fortunately I soon acquired an outboard >> VFO, a life-changing addition to my station. Jealous friends doubled >> up on their paper routes to pay for their own. Girls suddenly paid >> more attention to me. >> >> QUESTION: What do an outboard VFO? and? ... /Girls suddenly paid more >> attention to me/.? .... have to do with CW?? >> >> Nice write-up about CW Spotting >> >> Cheers, Jan K1ND >> >> **** I've read many a paper in my role as a professor ;-) >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donwilh at embarqmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to merv.k9fd at gmail.com From kkinderen at gmail.com Fri Jan 25 19:00:14 2019 From: kkinderen at gmail.com (Kevin der Kinderen) Date: Fri, 25 Jan 2019 19:00:14 -0500 Subject: [Elecraft] Latest Elecraft NEWS In-Reply-To: <369944c9-1246-86d0-def0-74abd0de0702@gmail.com> References: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> <369944c9-1246-86d0-def0-74abd0de0702@gmail.com> Message-ID: I love that picture Mike. I miss my old Heath station (HW8, power supply and paddles). Not because the equipment had the best numbers but because I built it and it was mine. It's a reminder of less complicated days. Thanks for sharing. Kev K4VD On Fri, Jan 25, 2019 at 4:59 PM Mike Markowski wrote: > My old time shack, like Don describes, which never fails to make me > better appreciate my K3: > > http://udel.edu/~mm/ham/skcc/ot2.jpg > > 73, > Mike ab3ap > > On 1/25/19 4:52 PM, Don Wilhelm wrote: > > [...] > > Yes, there was a time when transceivers did not exist, and many > > transmitters did not come with a VFO. Many VFOs were external to the > > transmitter. > > > > 73, > > Don W3FPR > > > > On 1/25/2019 4:35 PM, Jan wrote: > >> [...] > >> QUESTION: Did your Heathkit HW-16 not have a tune-able receiver? So, > >> why the Hallicrafters mention ?? > >> [...] > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to kkinderen at gmail.com From htodd at twofifty.com Fri Jan 25 19:08:40 2019 From: htodd at twofifty.com (Hisashi T Fujinaka) Date: Fri, 25 Jan 2019 16:08:40 -0800 (PST) Subject: [Elecraft] Latest Elecraft NEWS In-Reply-To: <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> References: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> Message-ID: I thought when I was a novice we couldn't use VFOs on transmit. On Fri, 25 Jan 2019, Don Wilhelm wrote: > Jan, > > The HW-16 was a crystal controlled transmitter only - no receive capability. > > Yes, there was a time when transceivers did not exist, and many > transmitters did not come with a VFO. Many VFOs were external to the > transmitter. > > 73, > Don W3FPR > > On 1/25/2019 4:35 PM, Jan wrote: >> Err, WAYNE - - there is some question as to the contents of the latest >> E-NEWS **** >> >> You write: armed with a dozen or so crusty FT-243 crystals for my Heath >> HW-16 .... (Away from "where" was a poorly answered question, as my >> Hallicrafters receiver dial wasn't exactly digital.) >> >> QUESTION: Did your Heathkit HW-16 not have a tune-able receiver? So, why >> the Hallicrafters mention ?? >> >> Then you continue with: Fortunately I soon acquired an outboard VFO, a >> life-changing addition to my station. Jealous friends doubled up on >> their paper routes to pay for their own. Girls suddenly paid more >> attention to me. >> >> QUESTION: What do an outboard VFO and ... /Girls suddenly paid more >> attention to me/. .... have to do with CW?? >> >> Nice write-up about CW Spotting >> >> Cheers, Jan K1ND >> >> **** I've read many a paper in my role as a professor ;-) >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donwilh at embarqmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to htodd at twofifty.com -- Hisashi T Fujinaka - htodd at twofifty.com BSEE + BSChem + BAEnglish + MSCS + $2.50 = coffee From ww3s at zoominternet.net Fri Jan 25 19:12:59 2019 From: ww3s at zoominternet.net (WW3S) Date: Fri, 25 Jan 2019 19:12:59 -0500 Subject: [Elecraft] Latest Elecraft NEWS In-Reply-To: References: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> Message-ID: <66861748-3A42-4775-B5D4-65FB04117B22@zoominternet.net> When I got my license in 1972 they had just authorized novices to use vfos....sure wish I had that Millen 90711 now !!!! Sent from my iPad > On Jan 25, 2019, at 7:08 PM, Hisashi T Fujinaka wrote: > > I thought when I was a novice we couldn't use VFOs on transmit. > >> On Fri, 25 Jan 2019, Don Wilhelm wrote: >> >> Jan, >> >> The HW-16 was a crystal controlled transmitter only - no receive capability. >> >> Yes, there was a time when transceivers did not exist, and many transmitters did not come with a VFO. Many VFOs were external to the transmitter. >> >> 73, >> Don W3FPR >> >>> On 1/25/2019 4:35 PM, Jan wrote: >>> Err, WAYNE - - there is some question as to the contents of the latest E-NEWS **** >>> You write: armed with a dozen or so crusty FT-243 crystals for my Heath HW-16 .... (Away from "where" was a poorly answered question, as my Hallicrafters receiver dial wasn't exactly digital.) >>> QUESTION: Did your Heathkit HW-16 not have a tune-able receiver? So, why the Hallicrafters mention ?? >>> Then you continue with: Fortunately I soon acquired an outboard VFO, a life-changing addition to my station. Jealous friends doubled up on their paper routes to pay for their own. Girls suddenly paid more attention to me. >>> QUESTION: What do an outboard VFO and ... /Girls suddenly paid more attention to me/. .... have to do with CW?? >>> Nice write-up about CW Spotting >>> Cheers, Jan K1ND >>> **** I've read many a paper in my role as a professor ;-) >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to donwilh at embarqmail.com >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to htodd at twofifty.com > > -- > Hisashi T Fujinaka - htodd at twofifty.com > BSEE + BSChem + BAEnglish + MSCS + $2.50 = coffee > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to ww3s at zoominternet.net From n6tv at arrl.net Fri Jan 25 19:22:49 2019 From: n6tv at arrl.net (Bob Wilson, N6TV) Date: Fri, 25 Jan 2019 16:22:49 -0800 Subject: [Elecraft] Auto spot In-Reply-To: References: Message-ID: Auto spot is fine for rag-chewing, or in contests when there is no pileup, but it's *not* always best to use when calling in a small pileup. It's better to call slightly off frequency from everyone else, so use the XIT to move up or down 100 Hz. If the DX is working with a wide split, put the *SubReceiver* on the DX frequency, and use MAIN to set your transmit frequency. No need to press the SPLIT button any more. Just tap A=B, turn on the SUB, and move VFO A up to the calling frequency. Why do it that way? 1. Enabling the SUB gives you an important audio clue that you are in "Split" mode (even though SPLIT is OFF). If you use SPLIT in the conventional way, all you get is a visual clue that you're transmitting on B instead of A. Using the "SUB" technique with SPLIT OFF, you're always transmitting on A, like you're used to, so it's less stress on the brain. 2. The VFO A knob is bigger, so it's easier to move quickly through a large pileup to figure where the DX is listening. Using the P3 scope helps find clear spots in the pileup too. Clear spots are good places to call. This assumes the P3 is in Fixed Mode, not Center. 3. No need to remember to turn SPLIT off when you are done. Leaving SPLIT OFF makes it much harder to transmit someplace where you are not listening. It's easy to remember to turn SUB off, because you can HEAR it. 4. Since the SUB has to be is ON, you are always listening to both sides pileup when in split (pileup in left ear, DX in right.ear). You can make the DX much louder than the pileup, which may be helpful. Try setting CONFIG:SUB AF to BALANCE so you only have to adjust one gain knob instead of two. 5. If you use SPLIT, CW QRQ mode is immediately disabled, so your CW can get very choppy (above 37 WPM). Enabling only the SUB, leaving SPLIT OFF, lets CW QRQ mode remain enabled. If you really need to use both ears and lots of audio filtering and noise reduction to hear a weak DX station that is working split, then it may be better to use SPLIT mode in the conventional way, listening on MAIN, transmitting on B, than trying to use the SUB. Same if you need to use Diversity + SPLIT. Otherwise, using the SUB instead of SPLIT has advantages. 73, Bob, N6TV On Fri, Jan 25, 2019 at 12:48 PM Leroy Buller wrote: > Works fantastic. Never read about this. Thanks for the info. > > Lee > From ken at whidbey.com Fri Jan 25 21:32:15 2019 From: ken at whidbey.com (ken) Date: Fri, 25 Jan 2019 18:32:15 -0800 Subject: [Elecraft] Not built 40/20 K1 Kit In-Reply-To: <37a27c9a-4993-000b-b21e-37ecaf8f7b35@accima.com> Message-ID: Bob,I haven't heard from you, so I'll assume there's an email issue. What is your asking price?Please reply to ken.schillinger at gmail.comThanks,? Ken ke7hge Sent from my Galaxy Tab? E -------- Original message --------From: Bob W7AVK Date: 1/23/19 1:43 PM (GMT-08:00) To: elecraft at mailman.qth.net Subject: [Elecraft] Not built 40/20 K1 Kit .In 2000 I purchased for a high school friend a two band [40 and 20]? K1 kit.? Idea was to kick start his interest in ham radio. Turned out he put the kit away and never returned to ham radio. Anyone interested in a 40 and 20 meter original K1 kit in the original box and packaging? 73? Bob? W7AVK ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ken at whidbey.com From ktalbott at gamewood.net Fri Jan 25 22:05:21 2019 From: ktalbott at gamewood.net (ktalbott at gamewood.net) Date: Fri, 25 Jan 2019 22:05:21 -0500 Subject: [Elecraft] Latest Elecraft NEWS In-Reply-To: <66861748-3A42-4775-B5D4-65FB04117B22@zoominternet.net> References: <3d057d70-cb8a-6365-2003-2143c09c2605@comcast.net> <00ec8100-9e6a-86cb-c1ce-53e9574573b4@embarqmail.com> <66861748-3A42-4775-B5D4-65FB04117B22@zoominternet.net> Message-ID: <005b01d4b523$faae5980$f00b0c80$@gamewood.net> Dial was for receiver, transmitter rock bound until you added optional VFO. Oh, girls did love VFOs. Especially those whose giga hertz ?. Ken ke4rg -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of WW3S Sent: Friday, January 25, 2019 7:13 PM To: Hisashi T Fujinaka Cc: elecraft at mailman.qth.net; Jan Subject: Re: [Elecraft] Latest Elecraft NEWS When I got my license in 1972 they had just authorized novices to use vfos....sure wish I had that Millen 90711 now !!!! Sent from my iPad > On Jan 25, 2019, at 7:08 PM, Hisashi T Fujinaka wrote: > > I thought when I was a novice we couldn't use VFOs on transmit. > >> On Fri, 25 Jan 2019, Don Wilhelm wrote: >> >> Jan, >> >> The HW-16 was a crystal controlled transmitter only - no receive capability. >> >> Yes, there was a time when transceivers did not exist, and many transmitters did not come with a VFO. Many VFOs were external to the transmitter. >> >> 73, >> Don W3FPR >> >>> On 1/25/2019 4:35 PM, Jan wrote: >>> Err, WAYNE - - there is some question as to the contents of the >>> latest E-NEWS **** You write: armed with a dozen or so crusty >>> FT-243 crystals for my Heath HW-16 .... (Away from "where" was a >>> poorly answered question, as my Hallicrafters receiver dial wasn't >>> exactly digital.) >>> QUESTION: Did your Heathkit HW-16 not have a tune-able receiver? So, why the Hallicrafters mention ?? >>> Then you continue with: Fortunately I soon acquired an outboard VFO, a life-changing addition to my station. Jealous friends doubled up on their paper routes to pay for their own. Girls suddenly paid more attention to me. >>> QUESTION: What do an outboard VFO and ... /Girls suddenly paid more attention to me/. .... have to do with CW?? >>> Nice write-up about CW Spotting >>> Cheers, Jan K1ND >>> **** I've read many a paper in my role as a professor ;-) >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net This list hosted by: >>> http://www.qsl.net Please help support this email list: >>> http://www.qsl.net/donate.html Message delivered to >>> donwilh at embarqmail.com >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net Please help support this >> email list: http://www.qsl.net/donate.html Message delivered to >> htodd at twofifty.com > > -- > Hisashi T Fujinaka - htodd at twofifty.com BSEE + BSChem + BAEnglish + > MSCS + $2.50 = coffee > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to > ww3s at zoominternet.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ktalbott at gamewood.net From kkinderen at gmail.com Fri Jan 25 23:47:13 2019 From: kkinderen at gmail.com (Kevin der Kinderen) Date: Fri, 25 Jan 2019 23:47:13 -0500 Subject: [Elecraft] KAT500/KPA500 - Sanity Check Please Message-ID: I'm reading the specifications for the KAT500. Typical matching range from 3-30 MHz is 10:1 SWR for 600 watts. This means that if the KAT500 utility reports "Bypass VSWR" in excess of 10:1 then the KPA500 should not be set to operate. I'm running a dipole cut for 80 and fed with 600 ohm ladder line as a multiband antenna. The BALUN is right outside my window. I have the option of 1:1, 4:1, 9:1 and 12:1 I think. They are DXE brand. My job then is to pick the right BALUN to provide <10:1 SWR on the bands of interest. I hoped this would be at least 80-20 if not 80-10. Not sure which BALUN is plugged in right now but on 80 meters I'm showing a bypass VSWR of 12.00 and VSWR of 1.6:1. This means I cannot use the KPA500 on 80 regardless of the good match the KAT500 provided. Should the key line cables from the KAT500 to the KPA500 and the rig (using a Flex) prevent keying the amp if the SWR exceeds 10:1 automatically? If I want better than that then I have to find another antenna tuner with a wider SWR range at 600 watts or a different antenna? Can anyone guess at the matching range of the KAT500 at 100W? The thing is... I think I have a dead amp. Kev K4VD From cx6vm.jorge at gmail.com Sat Jan 26 00:57:45 2019 From: cx6vm.jorge at gmail.com (Jorge Diez (CX6VM-CW5W)) Date: Sat, 26 Jan 2019 02:57:45 -0300 Subject: [Elecraft] LP-100 software In-Reply-To: References: Message-ID: <85508C4E-0E16-45D1-8A96-9E14AAC05A4C@gmail.com> Hi I use it also, yet don?t want to use TeamViewer to see it I am using Green Heron Everyware Server and Client and want to see LP-100 the same way, less bandwidth consumption 73, Jorge Enviado desde mi iPhone El 25 ene. 2019, a la(s) 18:07, Andy Durbin escribi?: > "What are you using? > > I have used LP-100 VCP and TeamViewer but my LP-100A is usually connected to my data logger and I can use TeamViewer to read that too. > > Any k3wyc > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to cx6vm.jorge at gmail.com From Volker.Debus at t-online.de Sat Jan 26 05:57:06 2019 From: Volker.Debus at t-online.de (Volker.Debus at t-online.de) Date: Sat, 26 Jan 2019 11:57:06 +0100 (CET) Subject: [Elecraft] P3IQ In-Reply-To: <1A926638-EAA3-47E8-9B60-0C844E2952C5@elecraft.com> References: <1A926638-EAA3-47E8-9B60-0C844E2952C5@elecraft.com> Message-ID: <1548500226538.12069370.892e3f42d97d893011652405a376e65deda51016@spica.telekom.de> Hello Wayne, are you still planning "to get it out of the box"? tnx Volker DL4ZBG -----Original-Nachricht----- Betreff: Re: [Elecraft] P3IQ Datum: 2018-07-28T18:45:02+0200 Von: "Wayne Burdick" An: "David Gilbert" To use the P3?s I/Q signals with software applications, you have to format the data like a USB sound card, a standard that is widely used and requires no special drivers. A significant amount of firmware is required at the P3 end, but we?re definitely looking at this. In answer to an earlier question: The P3 uses a very high-performance A-to-D converter, so the I/Q stream will have excellent dynamic characteristics (once we get it out of the box :) Wayne N6KR > On Jul 28, 2018, at 9:31 AM, David Gilbert wrote: > > > I never understood why the P3 didn't have I/Q outputs in the first place, and I remember pleading for them well before the P3 was finalized. It never made sense to me to have to have to add additional hardware to make use of other software that used I/Q outputs when the P3 clearly generated them internally. > > Dave AB7E > > > > On 7/28/2018 6:30 AM, Wayne Burdick wrote: >>> The KX3 has I/Q signals (and I/Q outputs) because the I/Q signals are at baseband (audio frequency spectrum). .... >> >>> The current fact iNice explanation, Don. >>> >>> However, when we do an I/Q add-on for the P3, it will be fully digital (like a USB sound card), not analog (like the KX3?s RX I/Q outputs). >>> >>> These digital signals already exist in the P3; we just need to repackage them for use with a computer. >>> >>> Wayne >>> N6KR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to volker.debus at t-online.de? From Volker.Debus at t-online.de Sat Jan 26 06:09:21 2019 From: Volker.Debus at t-online.de (Volker.Debus at t-online.de) Date: Sat, 26 Jan 2019 12:09:21 +0100 (CET) Subject: [Elecraft] K3 with transverter on 144 operating FT8 Message-ID: <1548500961845.5953657.23e97c7b00818f5512914625119ac0ed49d6fc43@spica.telekom.de> Hello "Elecrafters", When I set the transverter output of the K3 to e.g. 0.4 mW in SSB or CW or FM, the output is constant and my output on 2m as well. But when I am operating in FT8 mode (WSJT-x latest version, ALC set to 4-5 digits) the output can be set to any value BUT starts to increase immediately. Did anyone notice the same behaviour? TNX Volker DL4ZBG ? From k9iua at yahoo.com Sat Jan 26 09:12:51 2019 From: k9iua at yahoo.com (Kevin Anderson) Date: Sat, 26 Jan 2019 14:12:51 +0000 (UTC) Subject: [Elecraft] HW-16 Re: Latest Elecraft NEWS References: <571181480.1480956.1548511971646.ref@mail.yahoo.com> Message-ID: <571181480.1480956.1548511971646@mail.yahoo.com> Hopefully not to belabor this too much (or exceed a cutoff on the conversation), the HW-16 was not a transceiver in the modern sense of shared circuitry throughout, but was a transmitter and receiver in the same cabinet that shared the same antenna connection and had the necessary cutoff and receiver protections on transmitting. The knob and dial you see is the receiver. The transmitter in the radio was CW-only, rock-bound on 80-40-15 meters only when barefoot with just the HW-16. It took the external HG-10 or -10B VFO (or similar grid-keyed VFO) to get you flexible transmitting not involving crystals. The receiver circuitry was on a circuit board in one half of the case and the transmitter circuitry was point-to-point wiring in the other half of the cabinet. A used HW-16, joined later by a HG-10B VFO, was my first radio when I got licensed in 1993 and used for a couple of years until it got upscaled by a used Ten-Tec Century 22. Cheers/73, Kevin, K9IUA (then KB9IUA from 1993 until 1999) --------------------------------------- Kevin Anderson, Dubuque IA USA, K9IUA k9iua (at) yahoo (dot) com --------------------------------------- From w7bv at comcast.net Sat Jan 26 09:34:17 2019 From: w7bv at comcast.net (Robert S. McCuskey) Date: Sat, 26 Jan 2019 07:34:17 -0700 Subject: [Elecraft] F/S: Radiosport RS60CF Headset and Heil PR10 mic Message-ID: <000001d4b584$38679510$a936bf30$@comcast.net> F/S: RADIOSPORT RS60CF HEADSET with flex-boom Electret condenser mic, integrated PTT, and two cables for Elecraft K3/K3S allowing choice of using either the front panel 8-pin Foster jack or rear panel 3.5mm mic and headset jacks, also included are a foot operated and a hand operated PTT switch, all in excellent condition, always in non-smoking environment. New cost $578. Asking $375 shipped USA. Also available is HEIL PR10 MICROPHONE PACKAGE includes PR10 dynamic condenser mic and LB-1 table base with CC-1-XLR-KB 8 pin cable for Elecraft K3/K3S, excellent condition, always in non-smoking environment. New cost $317. Asking $195 shipped USA. Both, and now excessive to my needs since I no longer have my K3. PayPal preferred or USPS Money Order PayPal preferred or USPS Money Order. Pictures can been seen in my ads on eHam.net. Bob W7BV email: w7bv at comcast dot net . From n8lp at telepostinc.com Sat Jan 26 09:55:19 2019 From: n8lp at telepostinc.com (N8LP) Date: Sat, 26 Jan 2019 07:55:19 -0700 (MST) Subject: [Elecraft] LP-100 software In-Reply-To: References: Message-ID: <1548514519931-0.post@n2.nabble.com> There are many alternatives for serial device servers... some software-based like VSPE which require a PC, and some hardware based like Lantronix, Digi and many cheap alternatives listed on Amazon. The hardware based ones just plug into your router at the remote site. Just make sure that the one you use allows you to specify an alias for the remote IP address unless you have a static IP address. With dynamic addressing, you need to use a service like DDNS to correlate your alias to the current dynamic address. 73, Larry N8LP -- Sent from: http://elecraft.365791.n2.nabble.com/ From rmcgraw at blomand.net Sat Jan 26 10:16:25 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sat, 26 Jan 2019 09:16:25 -0600 Subject: [Elecraft] KAT500/KPA500 - Sanity Check Please In-Reply-To: References: Message-ID: My station is a K3S, KPA500, KAT500.??? The antenna is a 250 ft center fed wire with 450 window line that runs from the feed point on the antenna all the way to the operating position where the 450 line terminates into a 1:1 current balun on the shelf just above the amp and tuner.? I use a common mode choke between the balun and the KAT500.? That common mode choke is a model 8232 purchased from The Wireman.?? It is 18" length of coax with about 75 ferrite beads of #43 material.??? This provides additional common mode rejection not offered by the balun.? I can work 160M through 6M with this configuration. The KAT500 is set to automatically switch to BYPASS if the SWR is less than 1.3:1.?? And it is set to bypass the amp if the SWR is greater than 1.5:1. A 10:1 SWR basically says the impedance is somewhere between 5 ohms and 500 ohms.?? In order to attain this you will need to use both, depending on band a 1:1 balun or a 4:1 balun as likely with your antenna the antenna on 40M presents a Z of 3000 ohms or so. Then the length of the feed line is critical as it becomes part of the impedance acting as a matching length of line.??? The "600 ohm" impedance of the line is of little importance as you are matching the entire complex load and not just the impedance of the line.? Many hams seem to think, incorrectly,? they need to match the impedance of the feed line. If your showing a Bypass SWR of 12:1 then you are outside of the range of the KAT500.? You are using the wrong balun or you need to change the 600 ohm feed line length to attain a better / lower SWR. The keying line between the KAT500 and KPA500 should interrupt the PTT line if the matched SWR exceeds 1.5:1.? This is a setting defined in the KAT500 configuration? by the user and the KAT500 Utility. The best suggestion,? make changes to the antenna such that the SWR falls within the range of the tuner.? As to the amp, connect a 50 dummy load to one output of the tuner {you do have one?} and then see how the combination of amp and tuner behave. I'd say the matching range of the KAT500 is the same at 100 watts.?? The KAT500 manual {page 2} clearly defines the matching ranges and power ratings. 73 Bob, K4TAX On 1/25/2019 10:47 PM, Kevin der Kinderen wrote: > I'm reading the specifications for the KAT500. Typical matching range from > 3-30 MHz is 10:1 SWR for 600 watts. > > This means that if the KAT500 utility reports "Bypass VSWR" in excess of > 10:1 then the KPA500 should not be set to operate. > > I'm running a dipole cut for 80 and fed with 600 ohm ladder line as a > multiband antenna. The BALUN is right outside my window. I have the option > of 1:1, 4:1, 9:1 and 12:1 I think. They are DXE brand. My job then is to > pick the right BALUN to provide <10:1 SWR on the bands of interest. I hoped > this would be at least 80-20 if not 80-10. > > Not sure which BALUN is plugged in right now but on 80 meters I'm showing a > bypass VSWR of 12.00 and VSWR of 1.6:1. This means I cannot use the KPA500 > on 80 regardless of the good match the KAT500 provided. > > Should the key line cables from the KAT500 to the KPA500 and the rig (using > a Flex) prevent keying the amp if the SWR exceeds 10:1 automatically? > > If I want better than that then I have to find another antenna tuner with a > wider SWR range at 600 watts or a different antenna? > > Can anyone guess at the matching range of the KAT500 at 100W? > > The thing is... I think I have a dead amp. > > Kev K4VD > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From a.durbin at msn.com Sat Jan 26 11:17:58 2019 From: a.durbin at msn.com (Andy Durbin) Date: Sat, 26 Jan 2019 16:17:58 +0000 Subject: [Elecraft] KAT500/KPA500 - Sanity Check Please Message-ID: "Should the key line cables from the KAT500 to the KPA500 and the rig (using a Flex) prevent keying the amp if the SWR exceeds 10:1 automatically?" I'd suggest installing and running the KAT500 Utility. It will give a clear indication of whether the KAT500 is inhibiting the KPA500 key line (Operate tab, others, Amp Key Interrupt) . To the best of my recollection Bypass VSWR is never used to interrupt the keying line. However, if you are bypassed, and transmitting with excessive VSWR, then the key line will be interrupted because of the current VSWR. VSWR thresholds can be set with KAT500 Utility, Configuration tab, VSWR thesholds. Andy, k3wyc From wes_n7ws at triconet.org Sat Jan 26 11:49:30 2019 From: wes_n7ws at triconet.org (Wes) Date: Sat, 26 Jan 2019 09:49:30 -0700 Subject: [Elecraft] KAT500/KPA500 - Sanity Check Please In-Reply-To: References: Message-ID: Not necessarily.? That is true for purely resistive (real) loads, but for reactive loads with the same SWR the real part can be much different and may or may not be matched even at <10:1. Wes? N7WS On 1/26/2019 8:16 AM, Bob McGraw K4TAX wrote: > ... > > A 10:1 SWR basically says the impedance is somewhere between 5 ohms and 500 > ohms.... > 73 > > Bob, K4TAX From phil-z at comcast.net Sat Jan 26 11:52:29 2019 From: phil-z at comcast.net (Phillip Zminda) Date: Sat, 26 Jan 2019 11:52:29 -0500 Subject: [Elecraft] KPA500 Assembly Help Message-ID: I am nearly done building my KPA500 kit but not clear about one part of mounting the transformer. It came with 2 thin rubber disks and 2 thicker ones wrapped with the metal disk. The instructions call for 3 disks on the bottom and one on top. Do I put 2 thick and one thin on the bottom with a thick one on top? It isn?t clear to me from the manual. Since it?s Saturday I wouldn?t expect an answer if I called or emailed support Elecraft today. Thanks, Phil N3ZP From jackbrindle at me.com Sat Jan 26 11:56:29 2019 From: jackbrindle at me.com (Jack Brindle) Date: Sat, 26 Jan 2019 08:56:29 -0800 Subject: [Elecraft] KPA500 Assembly Help In-Reply-To: References: Message-ID: <95A30DE7-4EAA-4ECB-8F57-293E5A722E0A@me.com> Ah, but you came to the right place to get an Elecraft answer! Use the two thick ones on the bottom plus one of the thin ones, then use a thin one on top. They are meant to reduce vibration, and thus hum when transmitting. Enjoy your KPA500, and if you have more questions, just ask! 73, Jack Brindle, W6FB Elecraft Engineering > On Jan 26, 2019, at 8:52 AM, Phillip Zminda wrote: > > I am nearly done building my KPA500 kit but not clear about one part of mounting the transformer. It came with 2 thin rubber disks and 2 thicker ones wrapped with the metal disk. The instructions call for 3 disks on the bottom and one on top. Do I put 2 thick and one thin on the bottom with a thick one on top? It isn?t clear to me from the manual. Since it?s Saturday I wouldn?t expect an answer if I called or emailed support Elecraft today. > > Thanks, > > Phil N3ZP > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jackbrindle at me.com From dick at elecraft.com Sat Jan 26 12:02:09 2019 From: dick at elecraft.com (Dick Dievendorff) Date: Sat, 26 Jan 2019 11:02:09 -0600 Subject: [Elecraft] KAT500/KPA500 - Sanity Check Please In-Reply-To: References: Message-ID: Bypass SWR is the SWR of the antenna, measured with the ATU bypassed. The ATU does interrupt the amp key line when the bypass SWR is too high AND there is enough forward power to endanger ATU components. It?s a fault. At 3:1 bypass SWR the ATU can handle a kilowatt. At 10:1 bypass SWR the ATU can handle the full output of a KPA500, but not 1000 watts. Some antennas higher than 10:1 SWR can be matched. But RF forward power needs to be reduced a bit. But some amazingly poor antennas can do the job if that?s all you have available. The ATU shouldn?t stop you from using a bad antenna until the combination of power level and high bypass SWR endanger ATU components. There is another ?amp key interrupt? SWR threshold to protect the amp; that?s the SWR as seen by the amp, with ATU matching. 73 de Dick, K6KR > On Jan 26, 2019, at 10:17, Andy Durbin wrote: > > "Should the key line cables from the KAT500 to the KPA500 and the rig (using a Flex) prevent keying the amp if the SWR exceeds 10:1 automatically?" > > I'd suggest installing and running the KAT500 Utility. It will give a clear indication of whether the KAT500 is inhibiting the KPA500 key line (Operate tab, others, Amp Key Interrupt) . To the best of my recollection Bypass VSWR is never used to interrupt the keying line. However, if you are bypassed, and transmitting with excessive VSWR, then the key line will be interrupted because of the current VSWR. VSWR thresholds can be set with KAT500 Utility, Configuration tab, VSWR thesholds. > > Andy, k3wyc > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to dick at elecraft.com From rmcgraw at blomand.net Sat Jan 26 12:01:46 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sat, 26 Jan 2019 11:01:46 -0600 Subject: [Elecraft] KPA500 Assembly Help In-Reply-To: <95A30DE7-4EAA-4ECB-8F57-293E5A722E0A@me.com> References: <95A30DE7-4EAA-4ECB-8F57-293E5A722E0A@me.com> Message-ID: <7b3fcf01-3677-060b-4017-5c1e9433a0ba@blomand.net> There is NOTHING like getting automatically an answer from the company and the person that designed the amp........on a Saturday morning!??? Thanks Jack. 73 Bob, K4TAX On 1/26/2019 10:56 AM, Jack Brindle via Elecraft wrote: > Ah, but you came to the right place to get an Elecraft answer! > > Use the two thick ones on the bottom plus one of the thin ones, then use a thin one on top. They are meant to reduce vibration, and thus hum when transmitting. > Enjoy your KPA500, and if you have more questions, just ask! > > 73, > Jack Brindle, W6FB > Elecraft Engineering > >> On Jan 26, 2019, at 8:52 AM, Phillip Zminda wrote: >> >> I am nearly done building my KPA500 kit but not clear about one part of mounting the transformer. It came with 2 thin rubber disks and 2 thicker ones wrapped with the metal disk. The instructions call for 3 disks on the bottom and one on top. Do I put 2 thick and one thin on the bottom with a thick one on top? It isn?t clear to me from the manual. Since it?s Saturday I wouldn?t expect an answer if I called or emailed support Elecraft today. >> >> Thanks, >> >> Phil N3ZP >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to jackbrindle at me.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From ebasilier at cox.net Sat Jan 26 12:19:00 2019 From: ebasilier at cox.net (Erik Basilier) Date: Sat, 26 Jan 2019 10:19:00 -0700 Subject: [Elecraft] OT: Yamaha CM500 headset mechanical issues Message-ID: <023601d4b59b$3a918280$afb48780$@cox.net> This list has discussed replacement of the ear-surrounding pillows. My CM500 is not very old, and the ear pillows are holding up fine. However, I recently hurt an elbow, and I am temporarily one-handed. While putting on the headset with one hand, I made one side of the headset catch on one side of the head while positioning the other side correctly over the ear. Finally I moved the other side over the ear. In this awkward operation, gently performed, somehow the soft headband was tugged on, and it broke loose at one end. It seems to be normally fastened by a tiny loop of string, and now that string is broken. I am sure the force on it was not very great, so maybe it broke because a defect in manufacturing. I could probably fix the problem with some replacement string and needle/thread, but that will have to wait until I am two-handed again. In the meantime I wonder if others have had the same problem, and if replacement parts are available. Maybe the headset can be worn comfortably for hours with the soft headband removed? Maybe some foam taped under the hard/springy headband would work even better? A separate issue that has bothered me since day one with the CM500: The sliding adjustment for head size needs to move every time the headset is put on. As soon as it is taken off, it slides to the minimum head size position, and the speakers have to be pulled down to the ear on each side. One of these days I am bound to try stopping this adjustment moving by applying rubber bands, tape, etc. Has anyone been though this and found the best and neatest solution? Thanks, 73, Erik K7TV From phil-z at comcast.net Sat Jan 26 12:30:07 2019 From: phil-z at comcast.net (Phillip Zminda) Date: Sat, 26 Jan 2019 12:30:07 -0500 Subject: [Elecraft] KPA500 Assembly Help Message-ID: Thanks for quick reply. This is the reason I have always enjoyed owning Elecraft products. 73, Phil N3ZP From a.durbin at msn.com Sat Jan 26 12:36:22 2019 From: a.durbin at msn.com (Andy Durbin) Date: Sat, 26 Jan 2019 17:36:22 +0000 Subject: [Elecraft] KAT500/KPA500 - Sanity Check Please In-Reply-To: References: Message-ID: "The ATU does interrupt the amp key line when the bypass SWR is too high AND there is enough forward power to endanger ATU components. It?s a fault." Dick, I'd like to understand that a bit better. Are you saying that, with a tuning solution that gives 1.6:1, and with that tuning solution being active, that the bypass SWR is being used in the logic that controls the interrupt line? I would not have expected the bypass SWR to be used in this condition. With the tuner in-line isn't the instantaneous SWR and reflected power what controls the interrupt? In other words - isn't the bypass SWR only a factor if/when the tuner is bypassed? Thanks and 73, Andy, k3wyc From a.durbin at msn.com Sat Jan 26 12:46:35 2019 From: a.durbin at msn.com (Andy Durbin) Date: Sat, 26 Jan 2019 17:46:35 +0000 Subject: [Elecraft] KPA500 Assembly Help Message-ID: "The instructions call for 3 disks on the bottom and one on top." I had the same question when I built mine. I think I put 2 on bottom and 1 on top. Even that is tight for the bolt length. Elecraft actually has a mod kit with a longer bolt and more rubber discs. I don't know why that is not included in the kit. You should read the Elecraft paper on hum mitigation for more discussion on rubber discs and bolt length. Get it from Elecraft or email me and I'll forward it. Andy, k3wyc From kkinderen at gmail.com Sat Jan 26 13:22:54 2019 From: kkinderen at gmail.com (Kevin der Kinderen) Date: Sat, 26 Jan 2019 13:22:54 -0500 Subject: [Elecraft] KAT500/KPA500 - Sanity Check Please In-Reply-To: References: Message-ID: Hi Bob: I'm using a very similar setup and forgot to mention the 1:1 current BALUN. The 4:1 is outside. There's about 2 feet of coax to a window feedthrough. Then from the feedthrough to the tuner is the 1:1 BALUN. The antenna is the 80 - 10 from trueladderline.com. Been using this model for years now. You say "The KAT500 is set to automatically switch to BYPASS if the SWR is less than 1.3:1. And it is set to bypass the amp if the SWR is greater than 1.5:1." Maybe I'm confused with the settings. In the KAT500 configuration under VSWR thresholds I have: Band: All Amp Key Interrupt: 5.00 Autotune: 1.80 Bypass: 1.3 I think this should mean that the amplifier would not be permitted to operate (key interrupt) if the tuner shows 5:1 or greater SWR. I think it means that once the *tuned* SWR drops below 5 the amp will be keyed. Should this be set to 1.5:1? If I really did blow the amp (I'm pretty convinced) then, over time, this possibly was the contributing factor. It is my amp that I think has gone bad, not the tuner. So if the problem were caused because I was regularly running into an antenna with >10:1 SWR (as noted by bypass SWR on the Operate tab) then I think the problem would have been with the KAT and not the KPA. Still, I am surprised there isn't a setting in the configuration tab that would prevent keying the amp when a certain value of bypass VSWR was exceeded. It could have a user setting similar to Amplifier Key Interrupt so that, as someone else mentioned, a person could elect to operate in less than ideal conditions while a person like me could still have some protection of pretty expensive equipment. I still think my amp is bad. Once out of the loop everything works well barefoot from my rig. The KPA500 tunes just about anything I throw at it and I'm hoping at 100 watt or less the 12:1 safety limit is not applicable. "If your showing a Bypass SWR of 12:1 then you are outside of the range of the KAT500. You are using the wrong balun or you need to change the 600 ohm feed line length to attain a better / lower SWR." Here's where my misunderstand probably trips me up again. The ladder line fed dipole cut for 80 meters should be an all-band antenna as long as I can match the load impedance of the antenna to the radio. For the KAT500, this is a max of 10:1 at 600 watts. For maybe another manufacturer's tuner (auto or manual) higher specs might be available? Or is there a certain point where the antenna is just not an antenna? I've got about 10K contacts on this antenna along with some DXCC and WAS accomplishments. It also seems to do OK in contests. The KPA shows the following bypass VSWRs for my antenna: 80 12.00 40 7.46 20 1.63 15 4.61 10 2.33 Changing the BALUN to a different ration would probably shift the numbers around a bit but not necessarily improve the situation. From these reading, technically my 80 meter band (for which the antenna is cut) is unusable with the KAT/KPA at full power but the other bands should be fine. As long as I fix the setting for the amplifier key interrupt then I should be able to reduce the risk to the amp on other bands. I have no clue why it was set to 5. Thanks for your explanation. It helps a lot. 73, Kev K4VD On Sat, Jan 26, 2019 at 10:16 AM Bob McGraw K4TAX wrote: > My station is a K3S, KPA500, KAT500. The antenna is a 250 ft center > fed wire with 450 window line that runs from the feed point on the > antenna all the way to the operating position where the 450 line > terminates into a 1:1 current balun on the shelf just above the amp and > tuner. I use a common mode choke between the balun and the KAT500. > That common mode choke is a model 8232 purchased from The Wireman. It > is 18" length of coax with about 75 ferrite beads of #43 material. > This provides additional common mode rejection not offered by the > balun. I can work 160M through 6M with this configuration. > > The KAT500 is set to automatically switch to BYPASS if the SWR is less > than 1.3:1. And it is set to bypass the amp if the SWR is greater than > 1.5:1. > > A 10:1 SWR basically says the impedance is somewhere between 5 ohms and > 500 ohms. In order to attain this you will need to use both, depending > on band a 1:1 balun or a 4:1 balun as likely with your antenna the > antenna on 40M presents a Z of 3000 ohms or so. Then the length of the > feed line is critical as it becomes part of the impedance acting as a > matching length of line. The "600 ohm" impedance of the line is of > little importance as you are matching the entire complex load and not > just the impedance of the line. Many hams seem to think, incorrectly, > they need to match the impedance of the feed line. > > If your showing a Bypass SWR of 12:1 then you are outside of the range > of the KAT500. You are using the wrong balun or you need to change the > 600 ohm feed line length to attain a better / lower SWR. > > The keying line between the KAT500 and KPA500 should interrupt the PTT > line if the matched SWR exceeds 1.5:1. This is a setting defined in the > KAT500 configuration by the user and the KAT500 Utility. > > The best suggestion, make changes to the antenna such that the SWR > falls within the range of the tuner. As to the amp, connect a 50 dummy > load to one output of the tuner {you do have one?} and then see how the > combination of amp and tuner behave. > > I'd say the matching range of the KAT500 is the same at 100 watts. The > KAT500 manual {page 2} clearly defines the matching ranges and power > ratings. > > 73 > > Bob, K4TAX > > > On 1/25/2019 10:47 PM, Kevin der Kinderen wrote: > > I'm reading the specifications for the KAT500. Typical matching range > from > > 3-30 MHz is 10:1 SWR for 600 watts. > > > > This means that if the KAT500 utility reports "Bypass VSWR" in excess of > > 10:1 then the KPA500 should not be set to operate. > > > > I'm running a dipole cut for 80 and fed with 600 ohm ladder line as a > > multiband antenna. The BALUN is right outside my window. I have the > option > > of 1:1, 4:1, 9:1 and 12:1 I think. They are DXE brand. My job then is to > > pick the right BALUN to provide <10:1 SWR on the bands of interest. I > hoped > > this would be at least 80-20 if not 80-10. > > > > Not sure which BALUN is plugged in right now but on 80 meters I'm > showing a > > bypass VSWR of 12.00 and VSWR of 1.6:1. This means I cannot use the > KPA500 > > on 80 regardless of the good match the KAT500 provided. > > > > Should the key line cables from the KAT500 to the KPA500 and the rig > (using > > a Flex) prevent keying the amp if the SWR exceeds 10:1 automatically? > > > > If I want better than that then I have to find another antenna tuner > with a > > wider SWR range at 600 watts or a different antenna? > > > > Can anyone guess at the matching range of the KAT500 at 100W? > > > > The thing is... I think I have a dead amp. > > > > Kev K4VD > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to rmcgraw at blomand.net > > > > From dick at elecraft.com Sat Jan 26 13:25:32 2019 From: dick at elecraft.com (Dick Dievendorff) Date: Sat, 26 Jan 2019 12:25:32 -0600 Subject: [Elecraft] KAT500/KPA500 - Sanity Check Please In-Reply-To: References: Message-ID: <7B8FBC83-C809-4CB7-B04E-A45AF63527AD@elecraft.com> Andy: If the RF power is high enough, and the bypass SWR is high enough, the ATU will fault and interrupt the amp key line. I?m away from the code right now, but we named this fault something like ?power too high for bypass SWR?. This is distinct from another SWR-related fault when the matched SWR, as seen by the amp, exceeds a threshold. This is the ?amp key interrupt threshold?, and you can set that. Some users want this out of the way, they trust the amp to protect itself, so they set this to 99:1. I think it defaults to 3:1. There are two SWR-related faults, both interrupt the amp key line. One is based on SWR as seen by the amp. The other is the SWR of the antenna, measured with the ATU bypassed, the bypass SWR, with RF power too high. If the SWR seen by the amp is low enough, the amp doesn?t care what the bypass SWR is, as the amp doesn't see that SWR. ATU components have voltage and current ratings that might be exceeded if higher power is permitted with a difficult load. This is why 10:1 bypass SWR can?t be allowed at 1000 watts, even if the SWR seen by the amp is 1.000 to 1. It is inconvenient (sometimes impossible) and too slow to measure bypass SWR every time a tuning solution is recalled. So this bypass SWR is measured during a full search tune and is retained in the stored ATU setting. I?m on vacation and we are about to head out, so I?ll need to let this go for a while. 73 de Dick, K6KR > On Jan 26, 2019, at 11:36, Andy Durbin wrote: > > "The ATU does interrupt the amp key line when the bypass SWR is too high AND there is enough forward power to endanger ATU components. It?s a fault." > > > Dick, > > I'd like to understand that a bit better. Are you saying that, with a tuning solution that gives 1.6:1, and with that tuning solution being active, that the bypass SWR is being used in the logic that controls the interrupt line? > > I would not have expected the bypass SWR to be used in this condition. With the tuner in-line isn't the instantaneous SWR and reflected power what controls the interrupt? > > In other words - isn't the bypass SWR only a factor if/when the tuner is bypassed? > > Thanks and 73, > Andy, k3wyc > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to dick at elecraft.com From a.durbin at msn.com Sat Jan 26 13:53:10 2019 From: a.durbin at msn.com (Andy Durbin) Date: Sat, 26 Jan 2019 18:53:10 +0000 Subject: [Elecraft] KAT500/KPA500 - Sanity Check Please In-Reply-To: <7B8FBC83-C809-4CB7-B04E-A45AF63527AD@elecraft.com> References: , <7B8FBC83-C809-4CB7-B04E-A45AF63527AD@elecraft.com> Message-ID: Thanks Dick. Info added to my KAT500 notes. The fault condition you mentioned appears to be fault code 2 - "Power Above Design Limit for Antenna SWR - Transmitter power exceeds the design limit for the unmatched antenna SWR. This power limit varies with the SWR of the antenna: 600 watts at 10:1 SWR, 1000 watts at 3:1 SWR." It would not appear to be applicable for the OP's case since he does not report a fault. No reply expected - enjoy your vacation. 73, Andy k3wyc From pincon at erols.com Sat Jan 26 13:53:31 2019 From: pincon at erols.com (Charlie T) Date: Sat, 26 Jan 2019 13:53:31 -0500 Subject: [Elecraft] HW-16 Re: Latest Elecraft NEWS In-Reply-To: <571181480.1480956.1548511971646@mail.yahoo.com> References: <571181480.1480956.1548511971646.ref@mail.yahoo.com> <571181480.1480956.1548511971646@mail.yahoo.com> Message-ID: <002c01d4b5a8$72400b40$56c021c0$@erols.com> The first of that type was, I believe a Hallicrafters SR-75, which was quite unique for its day. If I remember correctly, it was basically an S-38 receiver that used the audio output tube as a single stage crystal oscillator & RF out function. Not what you'd call a stellar performer, but it was a first and self-contained in a package which was same size as the S-38. 73, Charlie k3ICH -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Kevin Anderson via Elecraft Sent: Saturday, January 26, 2019 9:13 AM To: elecraft at mailman.qth.net Subject: [Elecraft] HW-16 Re: Latest Elecraft NEWS Hopefully not to belabor this too much (or exceed a cutoff on the conversation), the HW-16 was not a transceiver in the modern sense of shared circuitry throughout, but was a transmitter and receiver in the same cabinet that shared the same antenna connection and had the necessary cutoff and receiver protections on transmitting. The knob and dial you see is the receiver. The transmitter in the radio was CW-only, rock-bound on 80-40-15 meters only when barefoot with just the HW-16. It took the external HG-10 or -10B VFO (or similar grid-keyed VFO) to get you flexible transmitting not involving crystals. The receiver circuitry was on a circuit board in one half of the case and the transmitter circuitry was point-to-point wiring in the other half of the cabinet. A used HW-16, joined later by a HG-10B VFO, was my first radio when I got licensed in 1993 and used for a couple of years until it got upscaled by a used Ten-Tec Century 22. Cheers/73, Kevin, K9IUA (then KB9IUA from 1993 until 1999) --------------------------------------- Kevin Anderson, Dubuque IA USA, K9IUA k9iua (at) yahoo (dot) com --------------------------------------- ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to pincon at erols.com From jackbrindle at me.com Sat Jan 26 13:53:01 2019 From: jackbrindle at me.com (Jack Brindle) Date: Sat, 26 Jan 2019 10:53:01 -0800 Subject: [Elecraft] KAT500/KPA500 - Sanity Check Please In-Reply-To: References: Message-ID: <0804C5B6-F6F3-476F-A8D8-3BDAD00031C1@me.com> Kevin; Why do you think there is a problem with the KPA500? I haven?t seen anything so far that explains that. In addition to the protections the KAT500 provides, the KPA500 has its own set of protections that keep it going or place it into a safe state. The KPA can take a lot of abuse before it faults, and it does quite a bit to keep itself from being damaged. As someone has suggested (I think it was Bob), you should test the KPA500 into a dummy load to make sure if there is an issue. If something shows up in that situation, then please do raise the issue with support. If you have questions about the KPA500?s operation, I should be able not answer them. I suspect your issues are with the setup of the KAT500 and perhaps an understanding of its protection mechanisms. Answering those questions should do a lot to get you going. One thing of note - the KPA and the KAT do not communicate with each other. If the Key signal is routed through the KAT to the KPA, then the KAT will protect the amplifier by disabling the key line into the KPA. Thus it is very important to connect this mechanism (as you have done). There is some very good expertise on the reflector. I believe that collectively they will be able to get you going. By the way, my own setup is similar - the antenna is a 250 foot loop at 35 feet fed with about 15 feet of ladder line. The ladder line connects to a 1:1balanced to unbalanced transformer (aka balun) that feeds eight feet of RG-213 into the KAT500. It tunes on every HF band except 160 meters. NEC analysis and real measurements show that the impedance on 160 is way too low for any match. 73! Jack, W6FB > On Jan 26, 2019, at 10:22 AM, Kevin der Kinderen wrote: > > Hi Bob: > > I'm using a very similar setup and forgot to mention the 1:1 current BALUN. > The 4:1 is outside. There's about 2 feet of coax to a window feedthrough. > Then from the feedthrough to the tuner is the 1:1 BALUN. The antenna is the > 80 - 10 from trueladderline.com. Been using this model for years now. > > You say "The KAT500 is set to automatically switch to BYPASS if the SWR is > less than 1.3:1. And it is set to bypass the amp if the SWR is greater > than 1.5:1." > > Maybe I'm confused with the settings. In the KAT500 configuration under > VSWR thresholds I have: > Band: All > Amp Key Interrupt: 5.00 > Autotune: 1.80 > Bypass: 1.3 > > I think this should mean that the amplifier would not be permitted to > operate (key interrupt) if the tuner shows 5:1 or greater SWR. I think it > means that once the *tuned* SWR drops below 5 the amp will be keyed. Should > this be set to 1.5:1? If I really did blow the amp (I'm pretty convinced) > then, over time, this possibly was the contributing factor. > > It is my amp that I think has gone bad, not the tuner. > > So if the problem were caused because I was regularly running into an > antenna with >10:1 SWR (as noted by bypass SWR on the Operate tab) then I > think the problem would have been with the KAT and not the KPA. Still, I am > surprised there isn't a setting in the configuration tab that would prevent > keying the amp when a certain value of bypass VSWR was exceeded. It could > have a user setting similar to Amplifier Key Interrupt so that, as someone > else mentioned, a person could elect to operate in less than ideal > conditions while a person like me could still have some protection of > pretty expensive equipment. > > I still think my amp is bad. Once out of the loop everything works well > barefoot from my rig. The KPA500 tunes just about anything I throw at it > and I'm hoping at 100 watt or less the 12:1 safety limit is not applicable. > > "If your showing a Bypass SWR of 12:1 then you are outside of the range of > the KAT500. You are using the wrong balun or you need to change the 600 > ohm feed line length to attain a better / lower SWR." Here's where my > misunderstand probably trips me up again. The ladder line fed dipole cut > for 80 meters should be an all-band antenna as long as I can match the load > impedance of the antenna to the radio. For the KAT500, this is a max of > 10:1 at 600 watts. For maybe another manufacturer's tuner (auto or manual) > higher specs might be available? Or is there a certain point where the > antenna is just not an antenna? I've got about 10K contacts on this antenna > along with some DXCC and WAS accomplishments. It also seems to do OK in > contests. > > The KPA shows the following bypass VSWRs for my antenna: > 80 12.00 > 40 7.46 > 20 1.63 > 15 4.61 > 10 2.33 > > Changing the BALUN to a different ration would probably shift the numbers > around a bit but not necessarily improve the situation. From these reading, > technically my 80 meter band (for which the antenna is cut) is unusable > with the KAT/KPA at full power but the other bands should be fine. As long > as I fix the setting for the amplifier key interrupt then I should be able > to reduce the risk to the amp on other bands. I have no clue why it was set > to 5. > > Thanks for your explanation. It helps a lot. > > 73, > Kev K4VD > > On Sat, Jan 26, 2019 at 10:16 AM Bob McGraw K4TAX > wrote: > >> My station is a K3S, KPA500, KAT500. The antenna is a 250 ft center >> fed wire with 450 window line that runs from the feed point on the >> antenna all the way to the operating position where the 450 line >> terminates into a 1:1 current balun on the shelf just above the amp and >> tuner. I use a common mode choke between the balun and the KAT500. >> That common mode choke is a model 8232 purchased from The Wireman. It >> is 18" length of coax with about 75 ferrite beads of #43 material. >> This provides additional common mode rejection not offered by the >> balun. I can work 160M through 6M with this configuration. >> >> The KAT500 is set to automatically switch to BYPASS if the SWR is less >> than 1.3:1. And it is set to bypass the amp if the SWR is greater than >> 1.5:1. >> >> A 10:1 SWR basically says the impedance is somewhere between 5 ohms and >> 500 ohms. In order to attain this you will need to use both, depending >> on band a 1:1 balun or a 4:1 balun as likely with your antenna the >> antenna on 40M presents a Z of 3000 ohms or so. Then the length of the >> feed line is critical as it becomes part of the impedance acting as a >> matching length of line. The "600 ohm" impedance of the line is of >> little importance as you are matching the entire complex load and not >> just the impedance of the line. Many hams seem to think, incorrectly, >> they need to match the impedance of the feed line. >> >> If your showing a Bypass SWR of 12:1 then you are outside of the range >> of the KAT500. You are using the wrong balun or you need to change the >> 600 ohm feed line length to attain a better / lower SWR. >> >> The keying line between the KAT500 and KPA500 should interrupt the PTT >> line if the matched SWR exceeds 1.5:1. This is a setting defined in the >> KAT500 configuration by the user and the KAT500 Utility. >> >> The best suggestion, make changes to the antenna such that the SWR >> falls within the range of the tuner. As to the amp, connect a 50 dummy >> load to one output of the tuner {you do have one?} and then see how the >> combination of amp and tuner behave. >> >> I'd say the matching range of the KAT500 is the same at 100 watts. The >> KAT500 manual {page 2} clearly defines the matching ranges and power >> ratings. >> >> 73 >> >> Bob, K4TAX >> >> >> On 1/25/2019 10:47 PM, Kevin der Kinderen wrote: >>> I'm reading the specifications for the KAT500. Typical matching range >> from >>> 3-30 MHz is 10:1 SWR for 600 watts. >>> >>> This means that if the KAT500 utility reports "Bypass VSWR" in excess of >>> 10:1 then the KPA500 should not be set to operate. >>> >>> I'm running a dipole cut for 80 and fed with 600 ohm ladder line as a >>> multiband antenna. The BALUN is right outside my window. I have the >> option >>> of 1:1, 4:1, 9:1 and 12:1 I think. They are DXE brand. My job then is to >>> pick the right BALUN to provide <10:1 SWR on the bands of interest. I >> hoped >>> this would be at least 80-20 if not 80-10. >>> >>> Not sure which BALUN is plugged in right now but on 80 meters I'm >> showing a >>> bypass VSWR of 12.00 and VSWR of 1.6:1. This means I cannot use the >> KPA500 >>> on 80 regardless of the good match the KAT500 provided. >>> >>> Should the key line cables from the KAT500 to the KPA500 and the rig >> (using >>> a Flex) prevent keying the amp if the SWR exceeds 10:1 automatically? >>> >>> If I want better than that then I have to find another antenna tuner >> with a >>> wider SWR range at 600 watts or a different antenna? >>> >>> Can anyone guess at the matching range of the KAT500 at 100W? >>> >>> The thing is... I think I have a dead amp. >>> >>> Kev K4VD >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to rmcgraw at blomand.net >>> >> >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jackbrindle at me.com From kkinderen at gmail.com Sat Jan 26 14:10:41 2019 From: kkinderen at gmail.com (Kevin der Kinderen) Date: Sat, 26 Jan 2019 14:10:41 -0500 Subject: [Elecraft] KAT500/KPA500 - Sanity Check Please In-Reply-To: <0804C5B6-F6F3-476F-A8D8-3BDAD00031C1@me.com> References: <0804C5B6-F6F3-476F-A8D8-3BDAD00031C1@me.com> Message-ID: Hi Jack... I hope you can prove me wrong and maybe there's a setup issue. The first symptom is, without the amp in line (standby or simply bypassed with a cable) everything works. With the amp in line, sometimes (very rarely) everything works but then all of a sudden the power out of the amp drops to zero and both the radio and the KAT show high SWR. This kind of makes me think the KAT500 is the problem. Why would the KAT500 show high SWR. But... In the condition mentioned above but now in receive, when I change the amp from operate to standby the signal strength shown by the receiver changes. In standby, everything looks normal. But in operate even the noise level drops significantly. Oddly, it almost looks like other signals have popped up weakly and distorted (I'm using a Flex so I'm watching the waterfall). Switching the amp back to standby and everything is back to normal again. This makes me think the KPA500 is the problem. Maybe I'm wrong but I can't get anything to fail when the amp is out of the circuit and can very rarely get anything to work when the amp is in the circuit. Maybe something to do with the control cables? I'm only using the PTT relay cables between the KAT500 and the amp and the KAT500 and the Flex 6500 (TX1). I followed Elecraft's "High Power Bundle for the Flex 6500" document. If there were something going on with this signal I could see it inhibiting the amp on transmit but on receive? Kev On Sat, Jan 26, 2019 at 1:53 PM Jack Brindle wrote: > Kevin; > > Why do you think there is a problem with the KPA500? I haven?t seen > anything so far that explains that. > In addition to the protections the KAT500 provides, the KPA500 has its own > set of protections that keep > it going or place it into a safe state. The KPA can take a lot of abuse > before it faults, and it does quite a bit > to keep itself from being damaged. > > As someone has suggested (I think it was Bob), you should test the KPA500 > into a dummy load to make sure if there is an issue. > If something shows up in that situation, then please do raise the issue > with support. If you have questions about the KPA500?s > operation, I should be able not answer them. I suspect your issues are > with the setup of the KAT500 and perhaps an understanding > of its protection mechanisms. Answering those questions should do a lot to > get you going. > > One thing of note - the KPA and the KAT do not communicate with each > other. If the Key signal is routed through the KAT to the KPA, > then the KAT will protect the amplifier by disabling the key line into the > KPA. Thus it is very important to connect this mechanism (as > you have done). > > There is some very good expertise on the reflector. I believe that > collectively they will be able to get you going. > > By the way, my own setup is similar - the antenna is a 250 foot loop at 35 > feet fed with about 15 feet of ladder line. The ladder line connects > to a 1:1balanced to unbalanced transformer (aka balun) that feeds eight > feet of RG-213 into the KAT500. It tunes on every HF band > except 160 meters. NEC analysis and real measurements show that the > impedance on 160 is way too low for any match. > > 73! > Jack, W6FB > > > > > On Jan 26, 2019, at 10:22 AM, Kevin der Kinderen > wrote: > > > > Hi Bob: > > > > I'm using a very similar setup and forgot to mention the 1:1 current > BALUN. > > The 4:1 is outside. There's about 2 feet of coax to a window feedthrough. > > Then from the feedthrough to the tuner is the 1:1 BALUN. The antenna is > the > > 80 - 10 from trueladderline.com. Been using this model for years now. > > > > You say "The KAT500 is set to automatically switch to BYPASS if the SWR > is > > less than 1.3:1. And it is set to bypass the amp if the SWR is greater > > than 1.5:1." > > > > Maybe I'm confused with the settings. In the KAT500 configuration under > > VSWR thresholds I have: > > Band: All > > Amp Key Interrupt: 5.00 > > Autotune: 1.80 > > Bypass: 1.3 > > > > I think this should mean that the amplifier would not be permitted to > > operate (key interrupt) if the tuner shows 5:1 or greater SWR. I think it > > means that once the *tuned* SWR drops below 5 the amp will be keyed. > Should > > this be set to 1.5:1? If I really did blow the amp (I'm pretty convinced) > > then, over time, this possibly was the contributing factor. > > > > It is my amp that I think has gone bad, not the tuner. > > > > So if the problem were caused because I was regularly running into an > > antenna with >10:1 SWR (as noted by bypass SWR on the Operate tab) then I > > think the problem would have been with the KAT and not the KPA. Still, I > am > > surprised there isn't a setting in the configuration tab that would > prevent > > keying the amp when a certain value of bypass VSWR was exceeded. It could > > have a user setting similar to Amplifier Key Interrupt so that, as > someone > > else mentioned, a person could elect to operate in less than ideal > > conditions while a person like me could still have some protection of > > pretty expensive equipment. > > > > I still think my amp is bad. Once out of the loop everything works well > > barefoot from my rig. The KPA500 tunes just about anything I throw at it > > and I'm hoping at 100 watt or less the 12:1 safety limit is not > applicable. > > > > "If your showing a Bypass SWR of 12:1 then you are outside of the range > of > > the KAT500. You are using the wrong balun or you need to change the 600 > > ohm feed line length to attain a better / lower SWR." Here's where my > > misunderstand probably trips me up again. The ladder line fed dipole cut > > for 80 meters should be an all-band antenna as long as I can match the > load > > impedance of the antenna to the radio. For the KAT500, this is a max of > > 10:1 at 600 watts. For maybe another manufacturer's tuner (auto or > manual) > > higher specs might be available? Or is there a certain point where the > > antenna is just not an antenna? I've got about 10K contacts on this > antenna > > along with some DXCC and WAS accomplishments. It also seems to do OK in > > contests. > > > > The KPA shows the following bypass VSWRs for my antenna: > > 80 12.00 > > 40 7.46 > > 20 1.63 > > 15 4.61 > > 10 2.33 > > > > Changing the BALUN to a different ration would probably shift the numbers > > around a bit but not necessarily improve the situation. From these > reading, > > technically my 80 meter band (for which the antenna is cut) is unusable > > with the KAT/KPA at full power but the other bands should be fine. As > long > > as I fix the setting for the amplifier key interrupt then I should be > able > > to reduce the risk to the amp on other bands. I have no clue why it was > set > > to 5. > > > > Thanks for your explanation. It helps a lot. > > > > 73, > > Kev K4VD > > > > On Sat, Jan 26, 2019 at 10:16 AM Bob McGraw K4TAX > > wrote: > > > >> My station is a K3S, KPA500, KAT500. The antenna is a 250 ft center > >> fed wire with 450 window line that runs from the feed point on the > >> antenna all the way to the operating position where the 450 line > >> terminates into a 1:1 current balun on the shelf just above the amp and > >> tuner. I use a common mode choke between the balun and the KAT500. > >> That common mode choke is a model 8232 purchased from The Wireman. It > >> is 18" length of coax with about 75 ferrite beads of #43 material. > >> This provides additional common mode rejection not offered by the > >> balun. I can work 160M through 6M with this configuration. > >> > >> The KAT500 is set to automatically switch to BYPASS if the SWR is less > >> than 1.3:1. And it is set to bypass the amp if the SWR is greater than > >> 1.5:1. > >> > >> A 10:1 SWR basically says the impedance is somewhere between 5 ohms and > >> 500 ohms. In order to attain this you will need to use both, depending > >> on band a 1:1 balun or a 4:1 balun as likely with your antenna the > >> antenna on 40M presents a Z of 3000 ohms or so. Then the length of the > >> feed line is critical as it becomes part of the impedance acting as a > >> matching length of line. The "600 ohm" impedance of the line is of > >> little importance as you are matching the entire complex load and not > >> just the impedance of the line. Many hams seem to think, incorrectly, > >> they need to match the impedance of the feed line. > >> > >> If your showing a Bypass SWR of 12:1 then you are outside of the range > >> of the KAT500. You are using the wrong balun or you need to change the > >> 600 ohm feed line length to attain a better / lower SWR. > >> > >> The keying line between the KAT500 and KPA500 should interrupt the PTT > >> line if the matched SWR exceeds 1.5:1. This is a setting defined in the > >> KAT500 configuration by the user and the KAT500 Utility. > >> > >> The best suggestion, make changes to the antenna such that the SWR > >> falls within the range of the tuner. As to the amp, connect a 50 dummy > >> load to one output of the tuner {you do have one?} and then see how the > >> combination of amp and tuner behave. > >> > >> I'd say the matching range of the KAT500 is the same at 100 watts. The > >> KAT500 manual {page 2} clearly defines the matching ranges and power > >> ratings. > >> > >> 73 > >> > >> Bob, K4TAX > >> > >> > >> On 1/25/2019 10:47 PM, Kevin der Kinderen wrote: > >>> I'm reading the specifications for the KAT500. Typical matching range > >> from > >>> 3-30 MHz is 10:1 SWR for 600 watts. > >>> > >>> This means that if the KAT500 utility reports "Bypass VSWR" in excess > of > >>> 10:1 then the KPA500 should not be set to operate. > >>> > >>> I'm running a dipole cut for 80 and fed with 600 ohm ladder line as a > >>> multiband antenna. The BALUN is right outside my window. I have the > >> option > >>> of 1:1, 4:1, 9:1 and 12:1 I think. They are DXE brand. My job then is > to > >>> pick the right BALUN to provide <10:1 SWR on the bands of interest. I > >> hoped > >>> this would be at least 80-20 if not 80-10. > >>> > >>> Not sure which BALUN is plugged in right now but on 80 meters I'm > >> showing a > >>> bypass VSWR of 12.00 and VSWR of 1.6:1. This means I cannot use the > >> KPA500 > >>> on 80 regardless of the good match the KAT500 provided. > >>> > >>> Should the key line cables from the KAT500 to the KPA500 and the rig > >> (using > >>> a Flex) prevent keying the amp if the SWR exceeds 10:1 automatically? > >>> > >>> If I want better than that then I have to find another antenna tuner > >> with a > >>> wider SWR range at 600 watts or a different antenna? > >>> > >>> Can anyone guess at the matching range of the KAT500 at 100W? > >>> > >>> The thing is... I think I have a dead amp. > >>> > >>> Kev K4VD > >>> ______________________________________________________________ > >>> Elecraft mailing list > >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >>> Help: http://mailman.qth.net/mmfaq.htm > >>> Post: mailto:Elecraft at mailman.qth.net > >>> > >>> This list hosted by: http://www.qsl.net > >>> Please help support this email list: http://www.qsl.net/donate.html > >>> Message delivered to rmcgraw at blomand.net > >>> > >> > >> > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to jackbrindle at me.com > > From jackbrindle at me.com Sat Jan 26 14:23:57 2019 From: jackbrindle at me.com (Jack Brindle) Date: Sat, 26 Jan 2019 11:23:57 -0800 Subject: [Elecraft] KAT500/KPA500 - Sanity Check Please In-Reply-To: References: <0804C5B6-F6F3-476F-A8D8-3BDAD00031C1@me.com> Message-ID: <6E120026-060A-4BE4-AEC0-B6D8C72F7933@me.com> You may be right on the KPA. This sounds like a TR issue. Call tech support on Monday and discuss it with them. In the mean time, I may be able to help further the diagnosis - use the KPA Utility to gather a fault log and send it to me. I have tools that will parse the info and let me know of any catastrophic events that may have occurred. One other item for your understanding - the KPA almost exclusively looks at reflected power, not SWR for its protection. That means the KPA can withstand relatively high SWR at low power, but as output power increases the actual SWR must come down. As K6KR has explained, The KAT500 does look at SWR, and the amount of bypass SWR that the KAT can handle increases as power drops. This is to protect the KAT500?s LC and switching components at higher power. Thus the max SWR is lower at 1000 watts than at 100 watts. I was hoping you were incorrect about the KPA500 issue. Your description tells me otherwise. Let?s see what we can do to resolve the issue and get some more countries (and contest QSOs with me among others) in your log. 73! Jack, W6FB > On Jan 26, 2019, at 11:10 AM, Kevin der Kinderen wrote: > > Hi Jack... I hope you can prove me wrong and maybe there's a setup issue. > > The first symptom is, without the amp in line (standby or simply bypassed with a cable) everything works. > > With the amp in line, sometimes (very rarely) everything works but then all of a sudden the power out of the amp drops to zero and both the radio and the KAT show high SWR. This kind of makes me think the KAT500 is the problem. Why would the KAT500 show high SWR. But... > > In the condition mentioned above but now in receive, when I change the amp from operate to standby the signal strength shown by the receiver changes. In standby, everything looks normal. But in operate even the noise level drops significantly. Oddly, it almost looks like other signals have popped up weakly and distorted (I'm using a Flex so I'm watching the waterfall). Switching the amp back to standby and everything is back to normal again. This makes me think the KPA500 is the problem. > > Maybe I'm wrong but I can't get anything to fail when the amp is out of the circuit and can very rarely get anything to work when the amp is in the circuit. Maybe something to do with the control cables? I'm only using the PTT relay cables between the KAT500 and the amp and the KAT500 and the Flex 6500 (TX1). I followed Elecraft's "High Power Bundle for the Flex 6500" document. If there were something going on with this signal I could see it inhibiting the amp on transmit but on receive? > > Kev > > > On Sat, Jan 26, 2019 at 1:53 PM Jack Brindle > wrote: > Kevin; > > Why do you think there is a problem with the KPA500? I haven?t seen anything so far that explains that. > In addition to the protections the KAT500 provides, the KPA500 has its own set of protections that keep > it going or place it into a safe state. The KPA can take a lot of abuse before it faults, and it does quite a bit > to keep itself from being damaged. > > As someone has suggested (I think it was Bob), you should test the KPA500 into a dummy load to make sure if there is an issue. > If something shows up in that situation, then please do raise the issue with support. If you have questions about the KPA500?s > operation, I should be able not answer them. I suspect your issues are with the setup of the KAT500 and perhaps an understanding > of its protection mechanisms. Answering those questions should do a lot to get you going. > > One thing of note - the KPA and the KAT do not communicate with each other. If the Key signal is routed through the KAT to the KPA, > then the KAT will protect the amplifier by disabling the key line into the KPA. Thus it is very important to connect this mechanism (as > you have done). > > There is some very good expertise on the reflector. I believe that collectively they will be able to get you going. > > By the way, my own setup is similar - the antenna is a 250 foot loop at 35 feet fed with about 15 feet of ladder line. The ladder line connects > to a 1:1balanced to unbalanced transformer (aka balun) that feeds eight feet of RG-213 into the KAT500. It tunes on every HF band > except 160 meters. NEC analysis and real measurements show that the impedance on 160 is way too low for any match. > > 73! > Jack, W6FB > > > > > On Jan 26, 2019, at 10:22 AM, Kevin der Kinderen > wrote: > > > > Hi Bob: > > > > I'm using a very similar setup and forgot to mention the 1:1 current BALUN. > > The 4:1 is outside. There's about 2 feet of coax to a window feedthrough. > > Then from the feedthrough to the tuner is the 1:1 BALUN. The antenna is the > > 80 - 10 from trueladderline.com . Been using this model for years now. > > > > You say "The KAT500 is set to automatically switch to BYPASS if the SWR is > > less than 1.3:1. And it is set to bypass the amp if the SWR is greater > > than 1.5:1." > > > > Maybe I'm confused with the settings. In the KAT500 configuration under > > VSWR thresholds I have: > > Band: All > > Amp Key Interrupt: 5.00 > > Autotune: 1.80 > > Bypass: 1.3 > > > > I think this should mean that the amplifier would not be permitted to > > operate (key interrupt) if the tuner shows 5:1 or greater SWR. I think it > > means that once the *tuned* SWR drops below 5 the amp will be keyed. Should > > this be set to 1.5:1? If I really did blow the amp (I'm pretty convinced) > > then, over time, this possibly was the contributing factor. > > > > It is my amp that I think has gone bad, not the tuner. > > > > So if the problem were caused because I was regularly running into an > > antenna with >10:1 SWR (as noted by bypass SWR on the Operate tab) then I > > think the problem would have been with the KAT and not the KPA. Still, I am > > surprised there isn't a setting in the configuration tab that would prevent > > keying the amp when a certain value of bypass VSWR was exceeded. It could > > have a user setting similar to Amplifier Key Interrupt so that, as someone > > else mentioned, a person could elect to operate in less than ideal > > conditions while a person like me could still have some protection of > > pretty expensive equipment. > > > > I still think my amp is bad. Once out of the loop everything works well > > barefoot from my rig. The KPA500 tunes just about anything I throw at it > > and I'm hoping at 100 watt or less the 12:1 safety limit is not applicable. > > > > "If your showing a Bypass SWR of 12:1 then you are outside of the range of > > the KAT500. You are using the wrong balun or you need to change the 600 > > ohm feed line length to attain a better / lower SWR." Here's where my > > misunderstand probably trips me up again. The ladder line fed dipole cut > > for 80 meters should be an all-band antenna as long as I can match the load > > impedance of the antenna to the radio. For the KAT500, this is a max of > > 10:1 at 600 watts. For maybe another manufacturer's tuner (auto or manual) > > higher specs might be available? Or is there a certain point where the > > antenna is just not an antenna? I've got about 10K contacts on this antenna > > along with some DXCC and WAS accomplishments. It also seems to do OK in > > contests. > > > > The KPA shows the following bypass VSWRs for my antenna: > > 80 12.00 > > 40 7.46 > > 20 1.63 > > 15 4.61 > > 10 2.33 > > > > Changing the BALUN to a different ration would probably shift the numbers > > around a bit but not necessarily improve the situation. From these reading, > > technically my 80 meter band (for which the antenna is cut) is unusable > > with the KAT/KPA at full power but the other bands should be fine. As long > > as I fix the setting for the amplifier key interrupt then I should be able > > to reduce the risk to the amp on other bands. I have no clue why it was set > > to 5. > > > > Thanks for your explanation. It helps a lot. > > > > 73, > > Kev K4VD > > > > On Sat, Jan 26, 2019 at 10:16 AM Bob McGraw K4TAX > > > wrote: > > > >> My station is a K3S, KPA500, KAT500. The antenna is a 250 ft center > >> fed wire with 450 window line that runs from the feed point on the > >> antenna all the way to the operating position where the 450 line > >> terminates into a 1:1 current balun on the shelf just above the amp and > >> tuner. I use a common mode choke between the balun and the KAT500. > >> That common mode choke is a model 8232 purchased from The Wireman. It > >> is 18" length of coax with about 75 ferrite beads of #43 material. > >> This provides additional common mode rejection not offered by the > >> balun. I can work 160M through 6M with this configuration. > >> > >> The KAT500 is set to automatically switch to BYPASS if the SWR is less > >> than 1.3:1. And it is set to bypass the amp if the SWR is greater than > >> 1.5:1. > >> > >> A 10:1 SWR basically says the impedance is somewhere between 5 ohms and > >> 500 ohms. In order to attain this you will need to use both, depending > >> on band a 1:1 balun or a 4:1 balun as likely with your antenna the > >> antenna on 40M presents a Z of 3000 ohms or so. Then the length of the > >> feed line is critical as it becomes part of the impedance acting as a > >> matching length of line. The "600 ohm" impedance of the line is of > >> little importance as you are matching the entire complex load and not > >> just the impedance of the line. Many hams seem to think, incorrectly, > >> they need to match the impedance of the feed line. > >> > >> If your showing a Bypass SWR of 12:1 then you are outside of the range > >> of the KAT500. You are using the wrong balun or you need to change the > >> 600 ohm feed line length to attain a better / lower SWR. > >> > >> The keying line between the KAT500 and KPA500 should interrupt the PTT > >> line if the matched SWR exceeds 1.5:1. This is a setting defined in the > >> KAT500 configuration by the user and the KAT500 Utility. > >> > >> The best suggestion, make changes to the antenna such that the SWR > >> falls within the range of the tuner. As to the amp, connect a 50 dummy > >> load to one output of the tuner {you do have one?} and then see how the > >> combination of amp and tuner behave. > >> > >> I'd say the matching range of the KAT500 is the same at 100 watts. The > >> KAT500 manual {page 2} clearly defines the matching ranges and power > >> ratings. > >> > >> 73 > >> > >> Bob, K4TAX > >> > >> > >> On 1/25/2019 10:47 PM, Kevin der Kinderen wrote: > >>> I'm reading the specifications for the KAT500. Typical matching range > >> from > >>> 3-30 MHz is 10:1 SWR for 600 watts. > >>> > >>> This means that if the KAT500 utility reports "Bypass VSWR" in excess of > >>> 10:1 then the KPA500 should not be set to operate. > >>> > >>> I'm running a dipole cut for 80 and fed with 600 ohm ladder line as a > >>> multiband antenna. The BALUN is right outside my window. I have the > >> option > >>> of 1:1, 4:1, 9:1 and 12:1 I think. They are DXE brand. My job then is to > >>> pick the right BALUN to provide <10:1 SWR on the bands of interest. I > >> hoped > >>> this would be at least 80-20 if not 80-10. > >>> > >>> Not sure which BALUN is plugged in right now but on 80 meters I'm > >> showing a > >>> bypass VSWR of 12.00 and VSWR of 1.6:1. This means I cannot use the > >> KPA500 > >>> on 80 regardless of the good match the KAT500 provided. > >>> > >>> Should the key line cables from the KAT500 to the KPA500 and the rig > >> (using > >>> a Flex) prevent keying the amp if the SWR exceeds 10:1 automatically? > >>> > >>> If I want better than that then I have to find another antenna tuner > >> with a > >>> wider SWR range at 600 watts or a different antenna? > >>> > >>> Can anyone guess at the matching range of the KAT500 at 100W? > >>> > >>> The thing is... I think I have a dead amp. > >>> > >>> Kev K4VD > >>> ______________________________________________________________ > >>> Elecraft mailing list > >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >>> Help: http://mailman.qth.net/mmfaq.htm > >>> Post: mailto:Elecraft at mailman.qth.net > >>> > >>> This list hosted by: http://www.qsl.net > >>> Please help support this email list: http://www.qsl.net/donate.html > >>> Message delivered to rmcgraw at blomand.net > >>> > >> > >> > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to jackbrindle at me.com > From kengkopp at gmail.com Sat Jan 26 16:43:49 2019 From: kengkopp at gmail.com (Ken G Kopp) Date: Sat, 26 Jan 2019 14:43:49 -0700 Subject: [Elecraft] OT: S-38 / SR-75 trivia Message-ID: In my Novice days many years ago I owned an SR-75. It was indeed an S-38 that used the audio output tube (35L6 or 50L6 (?) as a TX oscillator with a plug-in coil that was reached through an opening in the back cover. Had no way to measure the output power, but it wasn't much. The original S-38 (only) has three slide switches in the lower left corner of the front panel. The third switch is for a diode noise blanker, and only appears on original S-38's. FWIW ? 73! Ken Kopp - K0PP From john at kn5l.net Sat Jan 26 17:03:55 2019 From: john at kn5l.net (John Oppenheimer) Date: Sat, 26 Jan 2019 16:03:55 -0600 Subject: [Elecraft] HW-16 Re: Latest Elecraft NEWS In-Reply-To: <002c01d4b5a8$72400b40$56c021c0$@erols.com> References: <571181480.1480956.1548511971646.ref@mail.yahoo.com> <571181480.1480956.1548511971646@mail.yahoo.com> <002c01d4b5a8$72400b40$56c021c0$@erols.com> Message-ID: <9c815fbe-08de-f1dc-2532-b122c646853f@kn5l.net> Took a look at Heath's HW-16 design. Quite ingenious: Using the PA cathode bypass capacitors and current through a diode to shunt the receiver front end during transmit. Early diode QSK operation. And a neon bulb relaxation oscillator, using grid block keying voltage, for CW sidetone. I enjoy putting vintage stuff on the air for SKN. Heath did not integrating their separates well back in the day, relying on 110V antenna relays. I may have some DX-60A/HG-10B/HR-1680/HS-1681 ideas for next year! John KN5L From jasimmons at pinewooddata.com Sat Jan 26 19:38:49 2019 From: jasimmons at pinewooddata.com (John Simmons) Date: Sat, 26 Jan 2019 18:38:49 -0600 Subject: [Elecraft] HW-16 Re: Latest Elecraft NEWS In-Reply-To: <9c815fbe-08de-f1dc-2532-b122c646853f@kn5l.net> References: <571181480.1480956.1548511971646.ref@mail.yahoo.com> <571181480.1480956.1548511971646@mail.yahoo.com> <002c01d4b5a8$72400b40$56c021c0$@erols.com> <9c815fbe-08de-f1dc-2532-b122c646853f@kn5l.net> Message-ID: <5C4CFD99.4010506@pinewooddata.com> Speaking of 110VAC antenna relays, I reached in the back of my Novice rig and touched the bare 110VAC contacts on the antenna relay. Youch! I was a little more cautious after that. Bare contacts wouldn't be allowed today in commercial gear. 73, -John NI0K > John Oppenheimer > Saturday, January 26, 2019 4:03 PM > Took a look at Heath's HW-16 design. Quite ingenious: Using the PA > cathode bypass capacitors and current through a diode to shunt the > receiver front end during transmit. Early diode QSK operation. And a > neon bulb relaxation oscillator, using grid block keying voltage, for CW > sidetone. > > I enjoy putting vintage stuff on the air for SKN. Heath did not > integrating their separates well back in the day, relying on 110V > antenna relays. I may have some DX-60A/HG-10B/HR-1680/HS-1681 ideas for > next year! > > John KN5L > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jasimmons at pinewooddata.com > Charlie T > Saturday, January 26, 2019 12:53 PM > The first of that type was, I believe a Hallicrafters SR-75, which was > quite > unique for its day. > > If I remember correctly, it was basically an S-38 receiver that used the > audio output tube as a single stage crystal oscillator & RF out function. > Not what you'd call a stellar performer, but it was a first and > self-contained in a package which was same size as the S-38. > > 73, Charlie k3ICH > > > > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net > On > Behalf Of Kevin Anderson via Elecraft > Sent: Saturday, January 26, 2019 9:13 AM > To: elecraft at mailman.qth.net > Subject: [Elecraft] HW-16 Re: Latest Elecraft NEWS > > Hopefully not to belabor this too much (or exceed a cutoff on the > conversation), the HW-16 was not a transceiver in the modern sense of > shared > circuitry throughout, but was a transmitter and receiver in the same > cabinet > that shared the same antenna connection and had the necessary cutoff and > receiver protections on transmitting. The knob and dial you see is the > receiver. The transmitter in the radio was CW-only, rock-bound on 80-40-15 > meters only when barefoot with just the HW-16. It took the external HG-10 > or -10B VFO (or similar grid-keyed VFO) to get you flexible > transmitting not > involving crystals. The receiver circuitry was on a circuit board in one > half of the case and the transmitter circuitry was point-to-point > wiring in > the other half of the cabinet. > > A used HW-16, joined later by a HG-10B VFO, was my first radio when I got > licensed in 1993 and used for a couple of years until it got upscaled by a > used Ten-Tec Century 22. > > Cheers/73, > Kevin, K9IUA (then KB9IUA from 1993 until 1999) > > --------------------------------------- > Kevin Anderson, Dubuque IA USA, K9IUA > k9iua (at) yahoo (dot) com > --------------------------------------- > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message > delivered to pincon at erols.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jasimmons at pinewooddata.com > Kevin Anderson via Elecraft > Saturday, January 26, 2019 8:12 AM > Hopefully not to belabor this too much (or exceed a cutoff on the > conversation), the HW-16 was not a transceiver in the modern sense of > shared circuitry throughout, but was a transmitter and receiver in the > same cabinet that shared the same antenna connection and had the > necessary cutoff and receiver protections on transmitting. The knob > and dial you see is the receiver. The transmitter in the radio was > CW-only, rock-bound on 80-40-15 meters only when barefoot with just > the HW-16. It took the external HG-10 or -10B VFO (or similar > grid-keyed VFO) to get you flexible transmitting not involving > crystals. The receiver circuitry was on a circuit board in one half of > the case and the transmitter circuitry was point-to-point wiring in > the other half of the cabinet. > > A used HW-16, joined later by a HG-10B VFO, was my first radio when I > got licensed in 1993 and used for a couple of years until it got > upscaled by a used Ten-Tec Century 22. > > Cheers/73, > Kevin, K9IUA (then KB9IUA from 1993 until 1999) > > --------------------------------------- > Kevin Anderson, Dubuque IA USA, K9IUA > k9iua (at) yahoo (dot) com > --------------------------------------- > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jasimmons at pinewooddata.com From gkidder at ilstu.edu Sat Jan 26 19:48:54 2019 From: gkidder at ilstu.edu (Kidder, George) Date: Sun, 27 Jan 2019 00:48:54 +0000 Subject: [Elecraft] Halicrafters S-38 In-Reply-To: <5C4CFD99.4010506@pinewooddata.com> References: <571181480.1480956.1548511971646.ref@mail.yahoo.com> <571181480.1480956.1548511971646@mail.yahoo.com> <002c01d4b5a8$72400b40$56c021c0$@erols.com> <9c815fbe-08de-f1dc-2532-b122c646853f@kn5l.net> <5C4CFD99.4010506@pinewooddata.com> Message-ID: The S-38, like many BC receivers at the time, was an "AC/DC" rig, with the chassis potentially hot if you weren't careful. Nearly eliminated myself in the basement trying to attach a Q-multiplier to it. This was better than 60 years ago. George, W3HBM On 1/26/2019 7:38 PM, John Simmons wrote: > Speaking of 110VAC antenna relays, I reached in the back of my Novice > rig and touched the bare 110VAC contacts on the antenna relay. Youch! I > was a little more cautious after that. Bare contacts wouldn't be allowed > today in commercial gear. > > 73, > -John NI0K > >> John Oppenheimer >> Saturday, January 26, 2019 4:03 PM >> Took a look at Heath's HW-16 design. Quite ingenious: Using the PA >> cathode bypass capacitors and current through a diode to shunt the >> receiver front end during transmit. Early diode QSK operation. And a >> neon bulb relaxation oscillator, using grid block keying voltage, for CW >> sidetone. >> >> I enjoy putting vintage stuff on the air for SKN. Heath did not >> integrating their separates well back in the day, relying on 110V >> antenna relays. I may have some DX-60A/HG-10B/HR-1680/HS-1681 ideas for >> next year! >> >> John KN5L >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to jasimmons at pinewooddata.com >> Charlie T >> Saturday, January 26, 2019 12:53 PM >> The first of that type was, I believe a Hallicrafters SR-75, which was >> quite >> unique for its day. >> >> If I remember correctly, it was basically an S-38 receiver that used the >> audio output tube as a single stage crystal oscillator & RF out function. >> Not what you'd call a stellar performer, but it was a first and >> self-contained in a package which was same size as the S-38. >> >> 73, Charlie k3ICH >> >> >> >> >> -----Original Message----- >> From: elecraft-bounces at mailman.qth.net >> On >> Behalf Of Kevin Anderson via Elecraft >> Sent: Saturday, January 26, 2019 9:13 AM >> To: elecraft at mailman.qth.net >> Subject: [Elecraft] HW-16 Re: Latest Elecraft NEWS >> >> Hopefully not to belabor this too much (or exceed a cutoff on the >> conversation), the HW-16 was not a transceiver in the modern sense of >> shared >> circuitry throughout, but was a transmitter and receiver in the same >> cabinet >> that shared the same antenna connection and had the necessary cutoff and >> receiver protections on transmitting. The knob and dial you see is the >> receiver. The transmitter in the radio was CW-only, rock-bound on >> 80-40-15 >> meters only when barefoot with just the HW-16. It took the external HG-10 >> or -10B VFO (or similar grid-keyed VFO) to get you flexible >> transmitting not >> involving crystals. The receiver circuitry was on a circuit board in one >> half of the case and the transmitter circuitry was point-to-point >> wiring in >> the other half of the cabinet. >> >> A used HW-16, joined later by a HG-10B VFO, was my first radio when I got >> licensed in 1993 and used for a couple of years until it got upscaled >> by a >> used Ten-Tec Century 22. >> >> Cheers/73, >> Kevin, K9IUA (then KB9IUA from 1993 until 1999) >> >> --------------------------------------- >> Kevin Anderson, Dubuque IA USA, K9IUA >> k9iua (at) yahoo (dot) com >> --------------------------------------- >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message >> delivered to pincon at erols.com >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to jasimmons at pinewooddata.com >> Kevin Anderson via Elecraft >> Saturday, January 26, 2019 8:12 AM >> Hopefully not to belabor this too much (or exceed a cutoff on the >> conversation), the HW-16 was not a transceiver in the modern sense of >> shared circuitry throughout, but was a transmitter and receiver in the >> same cabinet that shared the same antenna connection and had the >> necessary cutoff and receiver protections on transmitting. The knob >> and dial you see is the receiver. The transmitter in the radio was >> CW-only, rock-bound on 80-40-15 meters only when barefoot with just >> the HW-16. It took the external HG-10 or -10B VFO (or similar >> grid-keyed VFO) to get you flexible transmitting not involving >> crystals. The receiver circuitry was on a circuit board in one half of >> the case and the transmitter circuitry was point-to-point wiring in >> the other half of the cabinet. >> >> A used HW-16, joined later by a HG-10B VFO, was my first radio when I >> got licensed in 1993 and used for a couple of years until it got >> upscaled by a used Ten-Tec Century 22. >> >> Cheers/73, >> Kevin, K9IUA (then KB9IUA from 1993 until 1999) >> >> --------------------------------------- >> Kevin Anderson, Dubuque IA USA, K9IUA >> k9iua (at) yahoo (dot) com >> --------------------------------------- >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to jasimmons at pinewooddata.com > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to gkidder at ilstu.edu From wa8jxm at gmail.com Sat Jan 26 20:08:21 2019 From: wa8jxm at gmail.com (Ken) Date: Sat, 26 Jan 2019 20:08:21 -0500 Subject: [Elecraft] HW-16 Re: Latest Elecraft NEWS In-Reply-To: <571181480.1480956.1548511971646@mail.yahoo.com> References: <571181480.1480956.1548511971646.ref@mail.yahoo.com> <571181480.1480956.1548511971646@mail.yahoo.com> Message-ID: <9f402839-ec8a-9d22-e902-77d631be4c00@gmail.com> Back in those days, Novice class licenses were required to operate with crystal control.? You learned to tune at least 10 kc/s (kHz came later) each side of your frequency after calling CQ.? Novice segments were on 80/40 and 15m CW only.? 2m AM and CW was also allowed. Rigs in those days did not have the calibration and stability to allow Novices to use VFO's.? Even upper class licensees needed a secondary standard to check their frequency (e.g. a 100 kHz crystal controlled marker.)? Nothing like the rigs today where we trust the dial to be very accurate. Ken WA8JXM On 1/26/19 9:12 AM, Kevin Anderson via Elecraft wrote: > The transmitter in the radio was CW-only, rock-bound on 80-40-15 meters only when barefoot with just the HW-16. It took the external HG-10 or -10B VFO (or similar grid-keyed VFO) to get you flexible transmitting not involving crystals. From wa8jxm at gmail.com Sat Jan 26 20:12:18 2019 From: wa8jxm at gmail.com (Ken) Date: Sat, 26 Jan 2019 20:12:18 -0500 Subject: [Elecraft] HW-16 Re: Latest Elecraft NEWS In-Reply-To: <5C4CFD99.4010506@pinewooddata.com> References: <571181480.1480956.1548511971646.ref@mail.yahoo.com> <571181480.1480956.1548511971646@mail.yahoo.com> <002c01d4b5a8$72400b40$56c021c0$@erols.com> <9c815fbe-08de-f1dc-2532-b122c646853f@kn5l.net> <5C4CFD99.4010506@pinewooddata.com> Message-ID: <11b2c415-9e81-144a-dde5-d946e8805395@gmail.com> You learned to know your rig and when to be careful.? As a teenager,? I had a 2700 volt open breadboard power supply. Ken WA8JXM On 1/26/19 7:38 PM, John Simmons wrote: > Speaking of 110VAC antenna relays, I reached in the back of my Novice > rig and touched the bare 110VAC contacts on the antenna relay. Youch! > I was a little more cautious after that. Bare contacts wouldn't be > allowed today in commercial gear. From n6kr at elecraft.com Sat Jan 26 20:34:23 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Sat, 26 Jan 2019 17:34:23 -0800 Subject: [Elecraft] Reminder: Winter Field Day (WFD) going on right now... In-Reply-To: <4509C921-424C-4802-A348-446AB69C10DA@elecraft.com> References: <4509C921-424C-4802-A348-446AB69C10DA@elecraft.com> Message-ID: <4F6D5718-3A39-4B57-A1F7-B4D51CFD2495@elecraft.com> Quite a bit of activity right now in WFD, especially 40 m SSB around 7200 kHz. If you're not feeling adventurous, just operate from home and sign "1H ". Have fun! Wayne N6KR > On Jan 24, 2019, at 8:01 AM, Wayne Burdick wrote: > > If, like me, you feel like one field day a year is not enough, then by all means give Winter Field Day a try. This event has been going on for some time, with growing participation, and in most respects it?s very similar to the annual ARRL Field Day. (It is NOT a QRP-only event.) > > The exchange is the number of transmitters in your group, plus a class, and your ARRL section. Classes include indoor, outdoor, and home (I, O, and H). For example, operating outdoors with my single transmitter, I?ll be signing ?1O SCV? in CW, or on phone, ?one oh Santa Clara Valley.? > > The contest period is also similar. This year it starts at 1900 UTC on Saturday and goes through 1900 UTC on Sunday (2 PM U.S. Eastern time). Specific band segments are designated to help participants find each other. Given the time of year, I?d expect the low bands to be very active. > > WFD is a great opportunity to throw a wire in the tree and operate from a picnic table, tent, or RV, or operate from the comfort of home and give the shivering masses a few well-deserved QSOs. > > For a complete rules, go to winterfieldday.com. > > 73, > Wayne > N6KR > > > > ---- > elecraft.com From k9jri at mac.com Sat Jan 26 20:42:14 2019 From: k9jri at mac.com (Michael Blake) Date: Sat, 26 Jan 2019 20:42:14 -0500 Subject: [Elecraft] Reminder: Winter Field Day (WFD) going on right now... In-Reply-To: <4F6D5718-3A39-4B57-A1F7-B4D51CFD2495@elecraft.com> References: <4509C921-424C-4802-A348-446AB69C10DA@elecraft.com> <4F6D5718-3A39-4B57-A1F7-B4D51CFD2495@elecraft.com> Message-ID: I was doing just that on 40 this afternoon. I felt like a BIG GUN with my K3s/KPA500. Great fun. Michael Blake k9jri at mac.com > On Jan 26, 2019, at 8:34 PM, Wayne Burdick wrote: > > Quite a bit of activity right now in WFD, especially 40 m SSB around 7200 kHz. If you're not feeling adventurous, just operate from home and sign "1H ". Have fun! > > Wayne > N6KR > > >> On Jan 24, 2019, at 8:01 AM, Wayne Burdick wrote: >> >> If, like me, you feel like one field day a year is not enough, then by all means give Winter Field Day a try. This event has been going on for some time, with growing participation, and in most respects it?s very similar to the annual ARRL Field Day. (It is NOT a QRP-only event.) >> >> The exchange is the number of transmitters in your group, plus a class, and your ARRL section. Classes include indoor, outdoor, and home (I, O, and H). For example, operating outdoors with my single transmitter, I?ll be signing ?1O SCV? in CW, or on phone, ?one oh Santa Clara Valley.? >> >> The contest period is also similar. This year it starts at 1900 UTC on Saturday and goes through 1900 UTC on Sunday (2 PM U.S. Eastern time). Specific band segments are designated to help participants find each other. Given the time of year, I?d expect the low bands to be very active. >> >> WFD is a great opportunity to throw a wire in the tree and operate from a picnic table, tent, or RV, or operate from the comfort of home and give the shivering masses a few well-deserved QSOs. >> >> For a complete rules, go to winterfieldday.com. >> >> 73, >> Wayne >> N6KR >> >> >> >> ---- >> elecraft.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9jri at mac.com From kevinr at coho.net Sat Jan 26 21:57:24 2019 From: kevinr at coho.net (kevinr) Date: Sat, 26 Jan 2019 18:57:24 -0800 Subject: [Elecraft] Elecraft CW Net Announcement Message-ID: <89da8f5e-a3ef-06d9-0698-7aa46771493c@coho.net> Good Evening, Please join us tomorrow on: 14050 kHz at 2200z Sunday? (2 PM PST Sunday) ?7047 kHz at 0000z Monday? (4 PM PST Sunday) 73, ?? Kevin. KD5ONS - From roger at mulzer.de Sun Jan 27 05:40:25 2019 From: roger at mulzer.de (Roger) Date: Sun, 27 Jan 2019 11:40:25 +0100 Subject: [Elecraft] P3 Panadapter - strong sum signals & relays clicking Message-ID: <001401d4b62c$b6b10de0$241329a0$@mulzer.de> Hello, since I worked on 80 and 160 m the last couple of weeks I noticed that the P3 panadapter starts clicking relays whenever a very strong local signal (-10 dBm to 0 dBm) or a number of strong signals within the bandpass are present. I could not find a relation yet when it happens because it takes place in irregular intervals. I don?t notice this behavior on the upper bands where signal levels and even the sum signals are not as strong as on the lowbands. I also don?t notice it if I switch to a nonresonant antenna and dropping the signal level or terminate the receiver to actually mute it. So it has to do with the signal level which makes me think it is an automatic adaption to keep the A/D converter in the dynamic range. It also seems to have a time constant as it doesn?t switch around quickly but keeps a certain state until it switches again. The fact that the noise floor on the screen jumps up by 50 dB or and then drops down again hints to an automatic adaption mode. Attenuator setting on the radio doesn?t have any effect. As I didn?t find any information about this issue in the manual I wonder whether somebody with a P3 panadapter could confirm (or not) whether he/she experiences the same thing. It was quite present this morning on 160 m (CQWW CW 160 m) as the band was filled with 9+++ signals between 1810 and 1900 kHz. I hear the sharp noise of the relays clicking thru the headphones and it gives an uncomfortable feeling to hear the relays cycling all the time. Maybe a future update of the firmware could make the switching process a bit smoother The firmware in use is the latest - ver. 1.60 73/Roger - DL5RBW From jack at satterfield.org Sun Jan 27 08:10:40 2019 From: jack at satterfield.org (Jack Satterfield) Date: Sun, 27 Jan 2019 08:10:40 -0500 Subject: [Elecraft] KAT500/KPA500 issue Message-ID: <000801d4b641$b4ccff10$1e66fd30$@org> After 5 years of perfect operation, now a very strange issue Bypass SWR 3 or 4:1 KAT500 tunes to 1.3:1 Switch amp to operate, operating SBB on first voice KAT500 goes full scale swr and amp faults on high swr Never had a issue before, antenna is g5rv Any ideas appreciated. Jack W4GRJ From k9jri at mac.com Sun Jan 27 08:17:18 2019 From: k9jri at mac.com (Michael Blake) Date: Sun, 27 Jan 2019 08:17:18 -0500 Subject: [Elecraft] KAT500/KPA500 issue In-Reply-To: <000801d4b641$b4ccff10$1e66fd30$@org> References: <000801d4b641$b4ccff10$1e66fd30$@org> Message-ID: <3AC2DF7E-C300-4A43-B883-E76D2344A5B8@mac.com> Jack, I had a similar thing happen and it turned out to be a tree branch had grown into the antenna path and when on high power the antenna was arcing to the tree branch. Might not be a tree branch but look for any signs of possible arching in the antenna, feed line or connectors. 73 - Mike - K9JRI > On Jan 27, 2019, at 8:10 AM, Jack Satterfield wrote: > > After 5 years of perfect operation, now a very strange issue > > Bypass SWR 3 or 4:1 > > KAT500 tunes to 1.3:1 > > Switch amp to operate, operating SBB on first voice KAT500 goes full scale > swr and amp faults on high swr > > Never had a issue before, antenna is g5rv > > Any ideas appreciated. > > Jack > > W4GRJ > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9jri at mac.com From jack at satterfield.org Sun Jan 27 08:28:41 2019 From: jack at satterfield.org (Jack Satterfield) Date: Sun, 27 Jan 2019 08:28:41 -0500 Subject: [Elecraft] KAT500/KPA500 issue In-Reply-To: <3AC2DF7E-C300-4A43-B883-E76D2344A5B8@mac.com> References: <000801d4b641$b4ccff10$1e66fd30$@org> <3AC2DF7E-C300-4A43-B883-E76D2344A5B8@mac.com> Message-ID: <001f01d4b644$397d95b0$ac78c110$@org> Michael..good suggestion, will do later when the rain stops. Thanks, Jack W4GRJ From: Michael Blake [mailto:k9jri at mac.com] Sent: Sunday, January 27, 2019 8:17 AM To: Jack Satterfield Cc: Elecraft Reflector Subject: Re: [Elecraft] KAT500/KPA500 issue Jack, I had a similar thing happen and it turned out to be a tree branch had grown into the antenna path and when on high power the antenna was arcing to the tree branch. Might not be a tree branch but look for any signs of possible arching in the antenna, feed line or connectors. 73 - Mike - K9JRI On Jan 27, 2019, at 8:10 AM, Jack Satterfield wrote: After 5 years of perfect operation, now a very strange issue Bypass SWR 3 or 4:1 KAT500 tunes to 1.3:1 Switch amp to operate, operating SBB on first voice KAT500 goes full scale swr and amp faults on high swr Never had a issue before, antenna is g5rv Any ideas appreciated. Jack W4GRJ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9jri at mac.com From rocketnj at gmail.com Sun Jan 27 08:49:45 2019 From: rocketnj at gmail.com (Dave) Date: Sun, 27 Jan 2019 08:49:45 -0500 Subject: [Elecraft] KAT500/KPA500 issue In-Reply-To: <001f01d4b644$397d95b0$ac78c110$@org> References: <000801d4b641$b4ccff10$1e66fd30$@org> <3AC2DF7E-C300-4A43-B883-E76D2344A5B8@mac.com> <001f01d4b644$397d95b0$ac78c110$@org> Message-ID: <15E78DB8-7BD6-4C14-85B4-3AAF06A5114C@gmail.com> Also check the ladder line at the ends for possible breaks. I had one of the ?optimized? G5RV antennas sold by W8AMZ which used solid wire in the ladder line. Due to flexing in the wind the wire broke where it entered the epoxyed pvc end cap (SO-239 connector) the plastic jacketing was still in place so the wire would be fine under 20 watts tune but would arc under high power. The fix was to rebuild the antenna using copper clad stranded ladder line. Dave wo2x Sent from my iPad > On Jan 27, 2019, at 8:28 AM, Jack Satterfield wrote: > > Michael..good suggestion, will do later when the rain stops. > > Thanks, > > Jack > > W4GRJ > > > > From: Michael Blake [mailto:k9jri at mac.com] > Sent: Sunday, January 27, 2019 8:17 AM > To: Jack Satterfield > Cc: Elecraft Reflector > Subject: Re: [Elecraft] KAT500/KPA500 issue > > > > Jack, I had a similar thing happen and it turned out to be a tree branch had > grown into the antenna path and when on high power the antenna was arcing to > the tree branch. Might not be a tree branch but look for any signs of > possible arching in the antenna, feed line or connectors. > > > > 73 - Mike - K9JRI > > > > > > > > > > > > > > > > On Jan 27, 2019, at 8:10 AM, Jack Satterfield wrote: > > > > After 5 years of perfect operation, now a very strange issue > > Bypass SWR 3 or 4:1 > > KAT500 tunes to 1.3:1 > > Switch amp to operate, operating SBB on first voice KAT500 goes full scale > swr and amp faults on high swr > > Never had a issue before, antenna is g5rv > > Any ideas appreciated. > > Jack > > W4GRJ > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k9jri at mac.com > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rocketnj at gmail.com From a.durbin at msn.com Sun Jan 27 09:07:21 2019 From: a.durbin at msn.com (Andy Durbin) Date: Sun, 27 Jan 2019 14:07:21 +0000 Subject: [Elecraft] KAT500/KPA500 issue Message-ID: "Any ideas appreciated." The first thing I would do is see if the problem is seen with a dummy load in circuit instead of the antenna system. No need to wait for the rain to stop. Andy, k3wyc From K4PI at BELLSOUTH.NET Sun Jan 27 10:00:02 2019 From: K4PI at BELLSOUTH.NET (Mike Greenway) Date: Sun, 27 Jan 2019 10:00:02 -0500 Subject: [Elecraft] Last Click Serial Port Message-ID: <570629C4E8F64CC4AF7F66C9E9AD3AE8@SHACK> Since I have incurred a situation at lest 3 times on my K3S, since it might help someone I thought I would share some info. On occasion I need to un-cable the K3S when working an something and like a fool thinking when I put it all back together it is going to work first time. I do have everything labeled so I do get everything into the right connector. The problem I have had to arise several times, once everything is ready to check the, the RS232 serial port will not communicate. After a lot of work each time it has turned out to be that the RJ45 connector for the RS232 jack, even though what appeared to be fully plugged in, pushing on it there would be a faint ?click? signifying it is truly fully seated. From where I thought I had it fully plugged in to actually being full could not have been a 64th of an inch if that. Not even sure if there is any further travel I just hear the faint click. So if you use the RJ45, even though the RJ45 appears to be in fully, if you have com port communication problems to your computer or cant talk to your P3, see if you hear that faint ?last click? in the RJ45. It is not just my particular K3S, I have seen the same situation on a second one. 73 Mike K4PI From rmcgraw at blomand.net Sun Jan 27 10:02:13 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Sun, 27 Jan 2019 09:02:13 -0600 Subject: [Elecraft] KAT500/KPA500 issue In-Reply-To: <000801d4b641$b4ccff10$1e66fd30$@org> References: <000801d4b641$b4ccff10$1e66fd30$@org> Message-ID: <153b49e6-516b-f877-cae7-7160c1b95f37@blomand.net> Sure sounds like an antenna problem.??? Check the system on a dummy load. 73 Bob, K4TAX On 1/27/2019 7:10 AM, Jack Satterfield wrote: > After 5 years of perfect operation, now a very strange issue > > Bypass SWR 3 or 4:1 > > KAT500 tunes to 1.3:1 > > Switch amp to operate, operating SBB on first voice KAT500 goes full scale > swr and amp faults on high swr > > Never had a issue before, antenna is g5rv > > Any ideas appreciated. > > Jack > > W4GRJ > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From gkidder at ilstu.edu Sun Jan 27 10:14:17 2019 From: gkidder at ilstu.edu (Kidder, George) Date: Sun, 27 Jan 2019 15:14:17 +0000 Subject: [Elecraft] KAT500/KPA500 issue In-Reply-To: <15E78DB8-7BD6-4C14-85B4-3AAF06A5114C@gmail.com> References: <000801d4b641$b4ccff10$1e66fd30$@org> <3AC2DF7E-C300-4A43-B883-E76D2344A5B8@mac.com> <001f01d4b644$397d95b0$ac78c110$@org> <15E78DB8-7BD6-4C14-85B4-3AAF06A5114C@gmail.com> Message-ID: <39ca2085-ffe7-dbc9-f168-1db44098684a@ilstu.edu> I have had the coax connector between the ladder line and the coax arc over with high power on 75. Might check that. George, W3HBM On 1/27/2019 8:49 AM, Dave wrote: > Also check the ladder line at the ends for possible breaks. > > I had one of the ?optimized? G5RV antennas sold by W8AMZ which used solid wire in the ladder line. Due to flexing in the wind the wire broke where it entered the epoxyed pvc end cap (SO-239 connector) the plastic jacketing was still in place so the wire would be fine under 20 watts tune but would arc under high power. > > The fix was to rebuild the antenna using copper clad stranded ladder line. > > Dave wo2x > > Sent from my iPad > >> On Jan 27, 2019, at 8:28 AM, Jack Satterfield wrote: >> >> Michael..good suggestion, will do later when the rain stops. >> >> Thanks, >> >> Jack >> >> W4GRJ >> >> >> >> From: Michael Blake [mailto:k9jri at mac.com] >> Sent: Sunday, January 27, 2019 8:17 AM >> To: Jack Satterfield >> Cc: Elecraft Reflector >> Subject: Re: [Elecraft] KAT500/KPA500 issue >> >> >> >> Jack, I had a similar thing happen and it turned out to be a tree branch had >> grown into the antenna path and when on high power the antenna was arcing to >> the tree branch. Might not be a tree branch but look for any signs of >> possible arching in the antenna, feed line or connectors. >> >> >> >> 73 - Mike - K9JRI >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> On Jan 27, 2019, at 8:10 AM, Jack Satterfield wrote: >> >> >> >> After 5 years of perfect operation, now a very strange issue >> >> Bypass SWR 3 or 4:1 >> >> KAT500 tunes to 1.3:1 >> >> Switch amp to operate, operating SBB on first voice KAT500 goes full scale >> swr and amp faults on high swr >> >> Never had a issue before, antenna is g5rv >> >> Any ideas appreciated. >> >> Jack >> >> W4GRJ >> >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to k9jri at mac.com >> >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to rocketnj at gmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to gkidder at ilstu.edu > From edauer at law.du.edu Sun Jan 27 10:25:00 2019 From: edauer at law.du.edu (Dauer, Edward) Date: Sun, 27 Jan 2019 15:25:00 +0000 Subject: [Elecraft] K2 Systems for Sale -- home downsizing continues Message-ID: <256A6A10-1B8B-43CB-999D-C94BDB8B3D39@law.du.edu> Many of the previously listed items have been sold. Two K2 systems and a non-Elecraft QRP rig are still available: K2/100 (s/n 7687) with KAT100 ATU in the matching low-profile enclosure. The K2 has the KNB2, KSB2, KAF2, and the 100-watt amp. The amp includes serial communications equivalent to the KIO2. The complete station, including all interconnecting and power cables. $1,250. K2/10 (s/n 7739) with KNB2, KSB2, KAF2, KAT2, and KIO2: $975 KPA100 and KAT100 in EC2 enclosure: $600 Both units purchased together, including all connecting cables: $1,450 This is the ?twins? configuration. Units have matching tilt stands. For sale separately or together. Anyone buying just the amp and tuner in the EC-2 for use with an existing K2 should note that their K2 must have a KIO2 serial interface. I have one heavy, dimpled knob available for either of the K2s, $50. And a KD1JV Triband QRP Transceiver with external ATU. Kit built, never tested. $80 Terms: No Pay Pal. Shipment on receipt of PO MO or bank check. Seller packs, Buyer pays actual shipment cost via carrier of their choice. CONUS only and for sale to licensed hams only. Please contact off line. Tnx, Ted, KN1CBR From hms4 at lehigh.edu Sun Jan 27 10:29:02 2019 From: hms4 at lehigh.edu (Howard Sherer) Date: Sun, 27 Jan 2019 10:29:02 -0500 Subject: [Elecraft] simple remote control of KPA 500 Message-ID: I have need to have a simple remote control of my KPA 500 for a few weeks. I would like to be able to remotely power up the amp. It will already be in the mode to power up in operate mode. I can only use an Iphone web interface to remotely power on the amp, no computers on either end. Any suggestions. I can do this with my RRC interface and K30, but this need if for another application. Howard Sherer From steve.grimaud at gmail.com Sun Jan 27 12:08:31 2019 From: steve.grimaud at gmail.com (Steve Grimaud (Gmail)) Date: Sun, 27 Jan 2019 12:08:31 -0500 Subject: [Elecraft] Best Mac to use with KX3 Message-ID: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> I'm trying to find a good new or used Macbook or Mac mini to begin using with my KX3. I had used a PC with ASUS Xonar U7 and/or Signalink USB. What will I need to keep, drop or use in a different way to get a Mac unit working with my KX3? I'm especially interested in digital signals. Who here knows what works best. 73 Steve w3swg -- Steve Grimaud steve.grimaud at gmail.com 240-753-5380 From n1al at sonic.net Sun Jan 27 13:31:39 2019 From: n1al at sonic.net (Alan) Date: Sun, 27 Jan 2019 10:31:39 -0800 Subject: [Elecraft] P3 Panadapter - strong sum signals & relays clicking In-Reply-To: <001401d4b62c$b6b10de0$241329a0$@mulzer.de> References: <001401d4b62c$b6b10de0$241329a0$@mulzer.de> Message-ID: <3b9dc57b-b518-703a-481d-dc8f25a8aecd@sonic.net> Yes, the P3 automatically bypasses its internal preamp whenever the input signal level overloads the ADC.? It uses a fairly complicated algorithm to try to minimize the inconvenience.? The first time the ADC overloads, the preamp is switched out for a fairly short period of time and then it is switched back again to see if the overload is still present.? If so, the preamp is turned off again, but this time for a longer period.? This continues until eventually the OFF period is quite long.? (I don't remember the exact time periods.) It takes quite a strong signal to overload the ADC so most operators will rarely see this. The gain of the internal P3 preamp is about 19 dB.? The software is supposed to take that into account in the display so that signal levels remain accurate when the preamp is switched out. Alan N1AL On 1/27/19 2:40 AM, Roger wrote: > Hello, > > since I worked on 80 and 160 m the last couple of weeks I noticed that the > P3 panadapter starts clicking relays whenever a very strong local signal > (-10 dBm to 0 dBm) or a number of strong signals within the bandpass are > present. I could not find a relation yet when it happens because it takes > place in irregular intervals. I don?t notice this behavior on the upper > bands where signal levels and even the sum signals are not as strong as on > the lowbands. I also don?t notice it if I switch to a nonresonant antenna > and dropping the signal level or terminate the receiver to actually mute it. > So it has to do with the signal level which makes me think it is an > automatic adaption to keep the A/D converter in the dynamic range. It also > seems to have a time constant as it doesn?t switch around quickly but keeps > a certain state until it switches again. The fact that the noise floor on > the screen jumps up by 50 dB or and then drops down again hints to an > automatic adaption mode. Attenuator setting on the radio doesn?t have any > effect. > > As I didn?t find any information about this issue in the manual I wonder > whether somebody with a P3 panadapter could confirm (or not) whether he/she > experiences the same thing. It was quite present this morning on 160 m (CQWW > CW 160 m) as the band was filled with 9+++ signals between 1810 and 1900 > kHz. > I hear the sharp noise of the relays clicking thru the headphones and it > gives an uncomfortable feeling to hear the relays cycling all the time. > Maybe a future update of the firmware could make the switching process a bit > smoother > > The firmware in use is the latest - ver. 1.60 > > 73/Roger - DL5RBW > > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to alan at elecraft.com > From k9ztv at socket.net Sun Jan 27 14:12:54 2019 From: k9ztv at socket.net (KENT TRIMBLE) Date: Sun, 27 Jan 2019 13:12:54 -0600 Subject: [Elecraft] Last Click Serial Port In-Reply-To: <570629C4E8F64CC4AF7F66C9E9AD3AE8@SHACK> References: <570629C4E8F64CC4AF7F66C9E9AD3AE8@SHACK> Message-ID: <62f8f3ed-d41b-ee80-f566-e6930fead540@socket.net> Another "gotcha" is forgetting to reset the RS232 baud rate. This bites me after every FD because N1MM is different from my Palstar AT-AUTO. 73, Kent? K9ZTV On 1/27/2019 9:00 AM, Mike Greenway wrote: > . . . so if you use the RJ45, even though the RJ45 appears to be in fully, if you have com port communication problems to your computer or cant talk to your P3, see if you hear that faint ?last click? in the RJ45. It is not just my particular K3S, I have seen the same situation on a second one. --- This email has been checked for viruses by AVG. https://www.avg.com From nr4c at widomaker.com Sun Jan 27 14:22:44 2019 From: nr4c at widomaker.com (Nr4c) Date: Sun, 27 Jan 2019 14:22:44 -0500 Subject: [Elecraft] Last Click Serial Port In-Reply-To: <62f8f3ed-d41b-ee80-f566-e6930fead540@socket.net> References: <570629C4E8F64CC4AF7F66C9E9AD3AE8@SHACK> <62f8f3ed-d41b-ee80-f566-e6930fead540@socket.net> Message-ID: Why not use the USB cable to computer? My RJ45 goes to P3. And, yes, it must be seated firmly. Sent from my iPhone ...nr4c. bill > On Jan 27, 2019, at 2:12 PM, KENT TRIMBLE wrote: > > Another "gotcha" is forgetting to reset the RS232 baud rate. > > This bites me after every FD because N1MM is different from my Palstar AT-AUTO. > > 73, > > Kent K9ZTV > > >> On 1/27/2019 9:00 AM, Mike Greenway wrote: >> . . . so if you use the RJ45, even though the RJ45 appears to be in fully, if you have com port communication problems to your computer or cant talk to your P3, see if you hear that faint ?last click? in the RJ45. It is not just my particular K3S, I have seen the same situation on a second one. > > > > --- > This email has been checked for viruses by AVG. > https://www.avg.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From wb2gai at aol.com Sun Jan 27 16:26:28 2019 From: wb2gai at aol.com (Ron) Date: Sun, 27 Jan 2019 21:26:28 +0000 (UTC) Subject: [Elecraft] Vibroplex Bug carry case for KX2 References: <1783662857.1963757.1548624388398.ref@mail.yahoo.com> Message-ID: <1783662857.1963757.1548624388398@mail.yahoo.com> ?When first licensed, I always visitedfellow hams with my Vibroplex Lightning Bug, protected by its carry case.? Now I travel with a complete station, KX2 /battery / antenna. ?Hope to place apaddle in the Vibroplex carry case B4 my next trip to SV9 Crete.? See WB2GAI?s QRZ page for pictures of case with KX2. From bborch at gmail.com Sun Jan 27 17:20:28 2019 From: bborch at gmail.com (Burl Borcherding) Date: Sun, 27 Jan 2019 17:20:28 -0500 Subject: [Elecraft] KPA1500 remote connection not working. Message-ID: <0FC06338-579A-400B-A582-5DC1C80B321E@gmail.com> I have updated the firmware to 2.0 and tried to connect using static IP address. I have 5 static IPv4 addresses that I use for remote connection on my K3 and K3/O mini. My remote K3/0 connects flawlessly. However, I have always had a problem connecting to the KPA1500 remotely. I can sometimes connect local when I am home, but can not remotely connect to the amp. Remote connection shows it is connected, but I can not see any data sets or make any changes to the amp during remote. Hence, not truly connected. The AMP is connected to the internet with a static IP address and ?Wakeup ON LAN Enabled. Also I have port 1500 forwarded in my router. I am using KPA 1500 Remote software V. 1.0.22.0 I have contacted Elecraft support several times to get this resolved and unfortunately, I do not get any response from Elecraft support. I am hoping someone here has a possible solution. 73?s Burl, AJ9Q From woyb10051 at outlook.com Sun Jan 27 17:30:59 2019 From: woyb10051 at outlook.com (John Langdon) Date: Sun, 27 Jan 2019 22:30:59 +0000 Subject: [Elecraft] KPA1500 remote connection not working. In-Reply-To: <0FC06338-579A-400B-A582-5DC1C80B321E@gmail.com> References: <0FC06338-579A-400B-A582-5DC1C80B321E@gmail.com> Message-ID: Burl, I have not been able to make it work either. At the remote transmitter site, I can connect to the KPA1500 via USB or the local LAN via TCP/IP. But in order to connect to the amp remotely, I have to use Windows Remote Desktop connection to the PC at the remote site. That works, but I would like to be able to control the amp without the PC. All the other devices with forwarded ports work - remote rig, Flex, power controller, webcams, etc. I will keep trying to make the 1500 work remotely, and share the secret if I find it. 73 John N5CQ -----Original Message----- From: elecraft-bounces at mailman.qth.net On Behalf Of Burl Borcherding Sent: Sunday, January 27, 2019 4:20 PM To: Elecraft at mailman.qth.net Subject: [Elecraft] KPA1500 remote connection not working. I have updated the firmware to 2.0 and tried to connect using static IP address. I have 5 static IPv4 addresses that I use for remote connection on my K3 and K3/O mini. My remote K3/0 connects flawlessly. However, I have always had a problem connecting to the KPA1500 remotely. I can sometimes connect local when I am home, but can not remotely connect to the amp. Remote connection shows it is connected, but I can not see any data sets or make any changes to the amp during remote. Hence, not truly connected. The AMP is connected to the internet with a static IP address and ?Wakeup ON LAN Enabled. Also I have port 1500 forwarded in my router. I am using KPA 1500 Remote software V. 1.0.22.0 I have contacted Elecraft support several times to get this resolved and unfortunately, I do not get any response from Elecraft support. I am hoping someone here has a possible solution. 73?s Burl, AJ9Q ______________________________________________________________ Elecraft mailing list Home: https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C5423c837d2c640411e2508d684a5cfa3%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636842245016005628&sdata=%2Bi3lIRvWhwfi0tD5LtTRrRfIlGgF0QZ5qlPQ79wtb74%3D&reserved=0 Help: https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C5423c837d2c640411e2508d684a5cfa3%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636842245016005628&sdata=x2RQK7I%2F89vX6LLRWzAWya988KJFHNEf64eSy29EIOk%3D&reserved=0 Post: mailto:Elecraft at mailman.qth.net This list hosted by: https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net&data=02%7C01%7C%7C5423c837d2c640411e2508d684a5cfa3%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636842245016005628&sdata=%2BShgu9fpF7O6xKEjHhv2Oz2JkMT2eWPuz%2BmYuR3DK2E%3D&reserved=0 Please help support this email list: https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C5423c837d2c640411e2508d684a5cfa3%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636842245016015651&sdata=xR70dZKRG6XtIhDT%2BuSyPVF1hU5njmMrHWQfzRcoG8M%3D&reserved=0 Message delivered to woyb10051 at outlook.com From jasimmons at pinewooddata.com Sun Jan 27 17:39:52 2019 From: jasimmons at pinewooddata.com (John Simmons) Date: Sun, 27 Jan 2019 16:39:52 -0600 Subject: [Elecraft] KPA1500 remote connection not working. In-Reply-To: References: <0FC06338-579A-400B-A582-5DC1C80B321E@gmail.com> Message-ID: <94344689-d938-27ae-ae81-f2cb05b2c993@pinewooddata.com> Chiming in here... did you try UDP & TCP? I have run into devices that claim 'only TCP' but required both protocols forwarded to work. Another idea: use Wireshark on a locally connected PC LAN card interface to sniff out the protocols and ports that are actually being used by the KPA. That will tell you for sure. Wireshark is free and there are lots of resources on the web to help you with it. 73, -John NI0K John Langdon wrote on 1/27/2019 4:30 PM: > Burl, > > I have not been able to make it work either. > > At the remote transmitter site, I can connect to the KPA1500 via USB or the local LAN via TCP/IP. But in order to connect to the amp remotely, I have to use Windows Remote Desktop connection to the PC at the remote site. That works, but I would like to be able to control the amp without the PC. All the other devices with forwarded ports work - remote rig, Flex, power controller, webcams, etc. > > I will keep trying to make the 1500 work remotely, and share the secret if I find it. > > 73 John N5CQ > > -----Original Message----- > From: elecraft-bounces at mailman.qth.net On Behalf Of Burl Borcherding > Sent: Sunday, January 27, 2019 4:20 PM > To: Elecraft at mailman.qth.net > Subject: [Elecraft] KPA1500 remote connection not working. > > I have updated the firmware to 2.0 and tried to connect using static IP address. I have 5 static IPv4 addresses that I use for remote connection on my K3 and K3/O mini. My remote K3/0 connects flawlessly. > > However, I have always had a problem connecting to the KPA1500 remotely. I can sometimes connect local when I am home, but can not remotely connect to the amp. Remote connection shows it is connected, but I can not see any data sets or make any changes to the amp during remote. Hence, not truly connected. > > The AMP is connected to the internet with a static IP address and ?Wakeup ON LAN Enabled. Also I have port 1500 forwarded in my router. > > I am using KPA 1500 Remote software V. 1.0.22.0 > > I have contacted Elecraft support several times to get this resolved and unfortunately, I do not get any response from Elecraft support. I am hoping someone here has a possible solution. > > 73?s > > Burl, AJ9Q > ______________________________________________________________ > Elecraft mailing list > Home: https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C5423c837d2c640411e2508d684a5cfa3%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636842245016005628&sdata=%2Bi3lIRvWhwfi0tD5LtTRrRfIlGgF0QZ5qlPQ79wtb74%3D&reserved=0 > Help: https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C5423c837d2c640411e2508d684a5cfa3%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636842245016005628&sdata=x2RQK7I%2F89vX6LLRWzAWya988KJFHNEf64eSy29EIOk%3D&reserved=0 > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net&data=02%7C01%7C%7C5423c837d2c640411e2508d684a5cfa3%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636842245016005628&sdata=%2BShgu9fpF7O6xKEjHhv2Oz2JkMT2eWPuz%2BmYuR3DK2E%3D&reserved=0 > Please help support this email list: https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C5423c837d2c640411e2508d684a5cfa3%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636842245016015651&sdata=xR70dZKRG6XtIhDT%2BuSyPVF1hU5njmMrHWQfzRcoG8M%3D&reserved=0 > Message delivered to woyb10051 at outlook.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jasimmons at pinewooddata.com From frantz at pwpconsult.com Sun Jan 27 19:36:11 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Sun, 27 Jan 2019 16:36:11 -0800 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> Message-ID: Use the Elecraft USB <--> RS232 with the 3.5mm plug to connect the KX3 to your computer for firmware updates with the KX3 Utility and for CAT control with various digital mode programs including wsjt-x. This interface will also allow many logging programs to automatically read the frequency and mode from the KX3. BTW, I use RUMlogNG from the Apple App store for logging. Skookumlogger is also a good contest logger, and can handle rover mode for VHF contests. Signing /R makes RUMlogNG think you are operating from Russia. I have used both a SignaLink and a $4 USB audio interface (from Amazon) for audio. With the $4 interface, I had to include a pad to lower the output level of the KX3 so it didn't overload the microphone input ot the interface. 73 Bill AE6JV On 1/27/19 at 9:08 AM, steve.grimaud at gmail.com (Steve Grimaud (Gmail)) wrote: >I'm trying to find a good new or used Macbook or Mac mini to >begin using with my KX3. I had used a PC with ASUS Xonar U7 >and/or Signalink USB. What will I need to keep, drop or use in >a different way to get a Mac unit working with my KX3? I'm >especially interested in digital signals. Who here knows what >works best. > >73 > >Steve w3swg > ----------------------------------------------------------------------- Bill Frantz | Truth and love must prevail | Periwinkle (408)356-8506 | over lies and hate. | 16345 Englewood Ave www.pwpconsult.com | - Vaclav Havel | Los Gatos, CA 95032 From w6jhb at me.com Sun Jan 27 19:50:55 2019 From: w6jhb at me.com (James Bennett) Date: Sun, 27 Jan 2019 16:50:55 -0800 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> References: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> Message-ID: <174598AE-1814-41D8-9C47-44662C3AB88B@me.com> Steve - I normally use an iMac (27?) here in the shack with WSJT-X and in the past have flip-flopped between a KX3 and my K3. Sold the KX3 and now use a KX2 alternately with the K3. In 2016 I took my KX3 to the southern Philippines along with a MacBook Pro Retina and used it with WSJT-X. The external audio ? sound card? I use is a Tascam US-125M. So, what you get will dictate what you?ll need to acquire, if anything. Several years ago Apple made a change in their OS in how it handles USB-2. Basically they screwed it up. And they are not inclined to fix it. From that point on there have been a bazillion Mac users (including myself) that are going along with digital modes working fine and all of a sudden, the audio starts coming out the internal speakers instead of the sound card. Numerous work-arounds are out there - the one I have been very successful with is to change the sampling rate to 44,000. This issue, from what I?ve heard, does not affect USB-3. If you get a relatively new Mac and it has USB-3, you?ll probably be OK. My iMac does not, so I use USB-2 and 99.9% of the time I?m OK. My MacBook Pro does not have USB-3, but it DOES have a Thunderbolt port. I got a Thunderbolt to USB converter on Amazon and that took care of this problem on the laptop. Hope that helps. p.s. - be sure you?ve got a beefy heatsink on that KX3 if you plan on running it barefoot at 15 watts on digital. The one that came with my KX3 (serial number 5539) wasn't up to the task and after a few minutes would fold back to 5 watts. This was prior to FT8 - the JT65 and JT9 modes run for considerably longer and do cause heat build-up. I eventually got a third-party heat sink and never had a problem with fold-back afterwards. 73, Jim / W6JHB > On Sunday, Jan 27, 2019, at Sunday, 9:08 AM, Steve Grimaud (Gmail) wrote: > > I'm trying to find a good new or used Macbook or Mac mini to begin using with my KX3. I had used a PC with ASUS Xonar U7 and/or Signalink USB. What will I need to keep, drop or use in a different way to get a Mac unit working with my KX3? I'm especially interested in digital signals. Who here knows what works best. > > 73 > > Steve w3swg > > -- > Steve Grimaud > steve.grimaud at gmail.com > 240-753-5380 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w6jhb at me.com James Bennett w6jhb at me.com From jstengrevics at comcast.net Sun Jan 27 19:54:28 2019 From: jstengrevics at comcast.net (John Stengrevics) Date: Sun, 27 Jan 2019 19:54:28 -0500 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <174598AE-1814-41D8-9C47-44662C3AB88B@me.com> References: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> <174598AE-1814-41D8-9C47-44662C3AB88B@me.com> Message-ID: <2AC87FFE-D369-4509-8B38-291EEDE74182@comcast.net> ?? I use a MacBook Pro (new). just connect the Mac to my K3S via USB. I imagine KX3 is the same. That?s all there is to it. 73, John WA1EAZ > On Jan 27, 2019, at 7:50 PM, James Bennett via Elecraft wrote: > > Steve - I normally use an iMac (27?) here in the shack with WSJT-X and in the past have flip-flopped between a KX3 and my K3. Sold the KX3 and now use a KX2 alternately with the K3. In 2016 I took my KX3 to the southern Philippines along with a MacBook Pro Retina and used it with WSJT-X. The external audio ? sound card? I use is a Tascam US-125M. > > So, what you get will dictate what you?ll need to acquire, if anything. Several years ago Apple made a change in their OS in how it handles USB-2. Basically they screwed it up. And they are not inclined to fix it. From that point on there have been a bazillion Mac users (including myself) that are going along with digital modes working fine and all of a sudden, the audio starts coming out the internal speakers instead of the sound card. Numerous work-arounds are out there - the one I have been very successful with is to change the sampling rate to 44,000. This issue, from what I?ve heard, does not affect USB-3. If you get a relatively new Mac and it has USB-3, you?ll probably be OK. My iMac does not, so I use USB-2 and 99.9% of the time I?m OK. My MacBook Pro does not have USB-3, but it DOES have a Thunderbolt port. I got a Thunderbolt to USB converter on Amazon and that took care of this problem on the laptop. > > Hope that helps. > > p.s. - be sure you?ve got a beefy heatsink on that KX3 if you plan on running it barefoot at 15 watts on digital. The one that came with my KX3 (serial number 5539) wasn't up to the task and after a few minutes would fold back to 5 watts. This was prior to FT8 - the JT65 and JT9 modes run for considerably longer and do cause heat build-up. I eventually got a third-party heat sink and never had a problem with fold-back afterwards. > > 73, Jim / W6JHB > > >> On Sunday, Jan 27, 2019, at Sunday, 9:08 AM, Steve Grimaud (Gmail) wrote: >> >> I'm trying to find a good new or used Macbook or Mac mini to begin using with my KX3. I had used a PC with ASUS Xonar U7 and/or Signalink USB. What will I need to keep, drop or use in a different way to get a Mac unit working with my KX3? I'm especially interested in digital signals. Who here knows what works best. >> >> 73 >> >> Steve w3swg >> >> -- >> Steve Grimaud >> steve.grimaud at gmail.com >> 240-753-5380 >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to w6jhb at me.com > > James Bennett > w6jhb at me.com > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jstengrevics at comcast.net From wunder at wunderwood.org Sun Jan 27 20:27:51 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Sun, 27 Jan 2019 17:27:51 -0800 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <174598AE-1814-41D8-9C47-44662C3AB88B@me.com> References: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> <174598AE-1814-41D8-9C47-44662C3AB88B@me.com> Message-ID: > On Jan 27, 2019, at 4:50 PM, James Bennett via Elecraft wrote: > > p.s. - be sure you?ve got a beefy heatsink on that KX3 if you plan on running it barefoot at 15 watts on digital. The KX3 is rated for 5 W in full carrier modes like FM and data. The easiest way to get above 5 W is to get a muffin fan and aim it at the heat sink. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) From riese-k3djc at juno.com Sun Jan 27 21:40:15 2019 From: riese-k3djc at juno.com (riese-k3djc at juno.com) Date: Sun, 27 Jan 2019 21:40:15 -0500 Subject: [Elecraft] Latest Elecraft NEWS Message-ID: lots of info on U tube both alignment and operation Bob K3DJC Fri, 25 Jan 2019 16:52:51 -0500 Don Wilhelm writes: > Jan, > > The HW-16 was a crystal controlled transmitter only - no receive > capability. > > Yes, there was a time when transceivers did not exist, and many > transmitters did not come with a VFO. Many VFOs were external to > the > transmitter. > > 73, > Don W3FPR > > On 1/25/2019 4:35 PM, Jan wrote: > > Err, WAYNE - - there is some question as to the contents of the > latest > > E-NEWS **** > > > > You write: armed with a dozen or so crusty FT-243 crystals for my > Heath > > HW-16 .... (Away from "where" was a poorly answered question, as > my > > Hallicrafters receiver dial wasn't exactly digital.) > > > > QUESTION: Did your Heathkit HW-16 not have a tune-able receiver? > So, why > > the Hallicrafters mention ?? > > > > Then you continue with: Fortunately I soon acquired an > outboard VFO, a > > life-changing addition to my station. Jealous friends doubled up > on > > their paper routes to pay for their own. Girls suddenly paid more > > attention to me. > > > > QUESTION: What do an outboard VFO and ... /Girls suddenly paid > more > > attention to me/. .... have to do with CW?? > > > > Nice write-up about CW Spotting > > > > Cheers, Jan K1ND > > > > **** I've read many a paper in my role as a professor ;-) > > > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: > http://www.qsl.net/donate.html > > Message delivered to donwilh at embarqmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to riese-k3djc at juno.com From kevinr at coho.net Sun Jan 27 23:04:53 2019 From: kevinr at coho.net (kevinr) Date: Sun, 27 Jan 2019 20:04:53 -0800 Subject: [Elecraft] Elecraft CW Net Report Message-ID: Good Evening, ?? Conditions were better on both bands.? QSB was everywhere but I was able to reach farther across the country.? Alberta Clipper was the storm type.? Dry snow, lots of drifting, followed by deep cold.? Good thing dry snow insulates so well.? My mother was born in North Dakota so she knew kids could get along just fine in the cold.? If you burrow into one of those snow drifts you can stay out in the cold for hours. ? On 14049.5 kHz at 2200z: W0CZ - Ken - ND AB9V - Mike - IN K6XK - Roy - IA KS4L - Randy - AL K4TAX - Bob - TN K4TO - Dave - KY NO8V - John - MI ? On 7047 kHz at 0000z: K4TO - Dave - KY W6JHB - Jim - CA K0DTJ - Brian - CA K6PJV - Dale - CA KG7V - Marv - WA K7EW - Steve - OR W0CZ - Ken - ND W8OV - Dave - TX ? Forty meters brought a few very close contacts.? One from the beaches of southern Washington the other from NW Portland.? With the topography around here that means the RF was going straight up and straight back down again.? Propagation is improving as the sun returns.? I hope the SFU gets into the 80s again.? Conditions seemed better today even though it was only at 72.? There is a real sunspot showing.? It sent off a C5 class flare yesterday but it missed the earth.? Maybe on the next pass its aim will be a little better. ?? 73, ????? Kevin.? KD5ONS *LUNKWILL:* Are you not as we designed you to be, the greatest, most powerful computer in all creation? *DEEP THOUGHT:* I described myself as the second greatest ?/Deep Thought/? and such? *LUNKWILL:* Yes yes but? *DEEP THOUGHT:* ?I am. *LUNKWILL:* But, but, but - this is preposterous! Are you not a greater computer than /The Milliard Gargantu-Brain at Maximegalon/, which can count all the atoms in a star in a millisecond? *DEEP THOUGHT:* /The Milliard Gargantu-Brain/, a mere abacus. Mention it not. *FOOK:* And are you not a more fiendish disputant than /The Great Hyperlobic Omnicognate Neutron-Wrangler/? Which can destroy - *DEEP THOUGHT:* /The Great Hyperlobic Omnicognate Neutron-Wrangler/ can talk all four legs off an Arcturan Mega-Donkey but only I can persuade it to go for a walk afterwards. Molest me not, with this, pocket calculator stuff! *LUNKWILL:* Then what?s the problem? *DEEP THOUGHT:* I speak of none, but the computer that is to come after me. { 7 and 1/2 million years later} A computer, whose merest operational parameters I am not worthy to calculate, and yet I will design it for you. A computer which can calculate the Question, to the Ultimate Answer. A computer of such infinite and subtle complexity that organic life itself will form part of its operational matrix. And it shall be called? the Earth. March 29, 1978 ------- From bbaines at mac.com Sun Jan 27 23:08:31 2019 From: bbaines at mac.com (Barry Baines) Date: Sun, 27 Jan 2019 23:08:31 -0500 Subject: [Elecraft] simple remote control of KPA 500 In-Reply-To: References: Message-ID: <3DC341CC-F5F6-4AE0-8418-44046599AD5E@mac.com> Howard: > On Jan 27, 2019, at 10:29 AM, Howard Sherer wrote: > > I have need to have a simple remote control of my KPA 500 for a few weeks. > I would like to be able to remotely power up the amp. It will already be in > the mode to power up in operate mode. > > I can only use an Iphone web interface to remotely power on the amp, no > computers on either end. Any suggestions. > > I can do this with my RRC interface and K30, but this need if for another > application. The ?simplest? approach would be to install the Remote Rig RC-1216H to connect to the RS-232 connection of the KPA500 which provides a web interface to manage the KPA500 including controlling power on/off and standby/operate. You get the same information that is available on the KPA500 front panel. This is how I control my KPA500 remotely. See: http://www.remoterig.com/wp/?page_id=1010 . I also use one of these to remotely control my Green Heron RT-21 rotator. Ham Radio Outlet is a supplier for these devices. Hope this helps, Barry Baines, WD4ASW (Currently in Roslindale, MA) > > Howard Sherer > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to bbaines at mac.com From donwilh at embarqmail.com Sun Jan 27 23:51:07 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Sun, 27 Jan 2019 23:51:07 -0500 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> References: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> Message-ID: <54a1ebd9-fbbb-db4b-ad8d-cf73c54c059a@embarqmail.com> Steve, The only software application specifically for the KX3 is KX3 Utility which takes very little of the computer resources. Perhaps a better question is -- "What processing capability is required for the software applications that I want to run?" That will determine how powerful a computer you will need - Mac or other OS. 73, Don W3FPR On 1/27/2019 12:08 PM, Steve Grimaud (Gmail) wrote: > I'm trying to find a good new or used Macbook or Mac mini to begin using > with my KX3. I had used a PC with ASUS Xonar U7 and/or Signalink USB. > What will I need to keep, drop or use in a different way to get a Mac > unit working with my KX3? I'm especially interested in digital signals. > Who here knows what works best. > From k4to.dave at gmail.com Mon Jan 28 07:59:55 2019 From: k4to.dave at gmail.com (Dave Sublette) Date: Mon, 28 Jan 2019 07:59:55 -0500 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <54a1ebd9-fbbb-db4b-ad8d-cf73c54c059a@embarqmail.com> References: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> <54a1ebd9-fbbb-db4b-ad8d-cf73c54c059a@embarqmail.com> Message-ID: I use a mac mini running Parallels and Windows 7/64bit. It works very well. I would think any .odel mac would do the job. Dave, K4TO On Sun, Jan 27, 2019, 11:51 PM Don Wilhelm Steve, > > The only software application specifically for the KX3 is KX3 Utility > which takes very little of the computer resources. > > Perhaps a better question is -- "What processing capability is required > for the software applications that I want to run?" > > That will determine how powerful a computer you will need - Mac or other > OS. > > 73, > Don W3FPR > > On 1/27/2019 12:08 PM, Steve Grimaud (Gmail) wrote: > > I'm trying to find a good new or used Macbook or Mac mini to begin using > > with my KX3. I had used a PC with ASUS Xonar U7 and/or Signalink USB. > > What will I need to keep, drop or use in a different way to get a Mac > > unit working with my KX3? I'm especially interested in digital signals. > > Who here knows what works best. > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k4to at arrl.net > From rlvz at aol.com Mon Jan 28 09:53:41 2019 From: rlvz at aol.com (RVZ) Date: Mon, 28 Jan 2019 14:53:41 +0000 (UTC) Subject: [Elecraft] K3: trade 1.8khz filter for a 2.1khz filter References: <1336523538.2286860.1548687221287.ref@mail.yahoo.com> Message-ID: <1336523538.2286860.1548687221287@mail.yahoo.com> I have a 1.8khz SSB filter in excellent condition that I'd like to trade for a 2.1khz filter.? Would anyone like to trade? 73, Dick- K9OMRLVZ at aol.com?? From donwilh at embarqmail.com Mon Jan 28 11:33:07 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Mon, 28 Jan 2019 11:33:07 -0500 Subject: [Elecraft] Last Click Serial Port In-Reply-To: <570629C4E8F64CC4AF7F66C9E9AD3AE8@SHACK> References: <570629C4E8F64CC4AF7F66C9E9AD3AE8@SHACK> Message-ID: Mike and all, That is my experience with RJ45 plugs as well. Rather than just pushing on the 'boot', it is helpful to pull the boot back a bit and push on the connector body itself, then slide the boot back in place. That is true not only for the K3S RJ-45 connector, but any RJ-45 in my wired ethernet network. Listen for that final click. 73, Don W3FPR On 1/27/2019 10:00 AM, Mike Greenway wrote: > Since I have incurred a situation at lest 3 times on my K3S, since it might help someone I thought I would share some info. On occasion I need to un-cable the K3S when working an something and like a fool thinking when I put it all back together it is going to work first time. I do have everything labeled so I do get everything into the right connector. The problem I have had to arise several times, once everything is ready to check the, the RS232 serial port will not communicate. > > After a lot of work each time it has turned out to be that the RJ45 connector for the RS232 jack, even though what appeared to be fully plugged in, pushing on it there would be a faint ?click? signifying it is truly fully seated. From where I thought I had it fully plugged in to actually being full could not have been a 64th of an inch if that. Not even sure if there is any further travel I just hear the faint click. So if you use the RJ45, even though the RJ45 appears to be in fully, if you have com port communication problems to your computer or cant talk to your P3, see if you hear that faint ?last click? in the RJ45. It is not just my particular K3S, I have seen the same situation on a second one. 73 Mike K4PI From eckerpw at gmail.com Mon Jan 28 14:26:48 2019 From: eckerpw at gmail.com (Paul Ecker) Date: Mon, 28 Jan 2019 14:26:48 -0500 Subject: [Elecraft] CM500 Mic ? Message-ID: Does anyone know if the CM500 has a Electret or Dynamic mic? 73 Paul w2eck From rmcgraw at blomand.net Mon Jan 28 14:30:55 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Mon, 28 Jan 2019 13:30:55 -0600 Subject: [Elecraft] CM500 Mic ? In-Reply-To: References: Message-ID: I recall that it is Electrect.? Should plug in direct on the back panel of the radio.? Just turn on the BIAS. 73 Bob, K4TAX On 1/28/2019 1:26 PM, Paul Ecker wrote: > Does anyone know if the CM500 has a Electret or Dynamic mic? > > 73 > Paul > w2eck > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From donwilh at embarqmail.com Mon Jan 28 14:33:20 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Mon, 28 Jan 2019 14:33:20 -0500 Subject: [Elecraft] CM500 Mic ? In-Reply-To: References: Message-ID: <899d03d3-18d8-4e41-ab9f-f00d37450826@embarqmail.com> Paul, While I have seen ads saying it has a dynamic element, that is not the case - it is an electret type. I believe it was designed to be a microphone you could plug into a computer, and all of those are electret types. 73, Don W3FPR On 1/28/2019 2:26 PM, Paul Ecker wrote: > Does anyone know if the CM500 has a Electret or Dynamic mic? > From eckerpw at gmail.com Mon Jan 28 14:44:17 2019 From: eckerpw at gmail.com (Paul Ecker) Date: Mon, 28 Jan 2019 14:44:17 -0500 Subject: [Elecraft] CM500 Mic ? In-Reply-To: <899d03d3-18d8-4e41-ab9f-f00d37450826@embarqmail.com> References: <899d03d3-18d8-4e41-ab9f-f00d37450826@embarqmail.com> Message-ID: Don - thank you. That was exactly the reason I wanted to double check. I saw an ad on the internet saying dynamic. Tnx agn & 73 Paul w2eck On Mon, Jan 28, 2019 at 2:33 PM Don Wilhelm wrote: > Paul, > > While I have seen ads saying it has a dynamic element, that is not the > case - it is an electret type. > > I believe it was designed to be a microphone you could plug into a > computer, and all of those are electret types. > > 73, > Don W3FPR > > > On 1/28/2019 2:26 PM, Paul Ecker wrote: > > Does anyone know if the CM500 has a Electret or Dynamic mic? > > > From wunder at wunderwood.org Mon Jan 28 14:52:04 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Mon, 28 Jan 2019 11:52:04 -0800 Subject: [Elecraft] CM500 Mic ? In-Reply-To: References: <899d03d3-18d8-4e41-ab9f-f00d37450826@embarqmail.com> Message-ID: <3E440EC3-E65B-43A2-A594-1CCACAE02D56@wunderwood.org> The published docs on the CM500 are a mess, but it is an electret. It even comes with a battery pack so you can use it with non-powered mic jacks. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 28, 2019, at 11:44 AM, Paul Ecker wrote: > > Don - thank you. That was exactly the reason I wanted to double check. I > saw an ad on the internet saying dynamic. > > Tnx agn & 73 > Paul > w2eck > > On Mon, Jan 28, 2019 at 2:33 PM Don Wilhelm wrote: > >> Paul, >> >> While I have seen ads saying it has a dynamic element, that is not the >> case - it is an electret type. >> >> I believe it was designed to be a microphone you could plug into a >> computer, and all of those are electret types. >> >> 73, >> Don W3FPR >> >> >> On 1/28/2019 2:26 PM, Paul Ecker wrote: >>> Does anyone know if the CM500 has a Electret or Dynamic mic? >>> >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From wunder at wunderwood.org Mon Jan 28 14:57:09 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Mon, 28 Jan 2019 11:57:09 -0800 Subject: [Elecraft] CM500 Mic ? In-Reply-To: <3E440EC3-E65B-43A2-A594-1CCACAE02D56@wunderwood.org> References: <899d03d3-18d8-4e41-ab9f-f00d37450826@embarqmail.com> <3E440EC3-E65B-43A2-A594-1CCACAE02D56@wunderwood.org> Message-ID: If you are using a KX2 or KX3, you?ll get logic bias as well as mic bias on the CM500 mic. If you separate out the mic bias, you?ll get more and cleaner output. A stereo to L/R splitter will do that job, plus it breaks out the PTT line. I wrote that up on my blog. https://observer.wunderwood.org/2015/08/16/yamaha-cm500-headset-with-ptt-on-elecraft-kx3/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 28, 2019, at 11:52 AM, Walter Underwood wrote: > > The published docs on the CM500 are a mess, but it is an electret. It even comes with a battery pack so you can use it with non-powered mic jacks. > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > >> On Jan 28, 2019, at 11:44 AM, Paul Ecker wrote: >> >> Don - thank you. That was exactly the reason I wanted to double check. I >> saw an ad on the internet saying dynamic. >> >> Tnx agn & 73 >> Paul >> w2eck >> >> On Mon, Jan 28, 2019 at 2:33 PM Don Wilhelm wrote: >> >>> Paul, >>> >>> While I have seen ads saying it has a dynamic element, that is not the >>> case - it is an electret type. >>> >>> I believe it was designed to be a microphone you could plug into a >>> computer, and all of those are electret types. >>> >>> 73, >>> Don W3FPR >>> >>> >>> On 1/28/2019 2:26 PM, Paul Ecker wrote: >>>> Does anyone know if the CM500 has a Electret or Dynamic mic? >>>> >>> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to wunder at wunderwood.org > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wunder at wunderwood.org From rmcgraw at blomand.net Mon Jan 28 14:59:05 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Mon, 28 Jan 2019 13:59:05 -0600 Subject: [Elecraft] CM500 Mic ? In-Reply-To: <3E440EC3-E65B-43A2-A594-1CCACAE02D56@wunderwood.org> References: <899d03d3-18d8-4e41-ab9f-f00d37450826@embarqmail.com> <3E440EC3-E65B-43A2-A594-1CCACAE02D56@wunderwood.org> Message-ID: Just goes to show, one can't believe what they read on the internet. 73 Bob, K4TAX On 1/28/2019 1:52 PM, Walter Underwood wrote: > The published docs on the CM500 are a mess, but it is an electret. It even comes with a battery pack so you can use it with non-powered mic jacks. > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > >> On Jan 28, 2019, at 11:44 AM, Paul Ecker wrote: >> >> Don - thank you. That was exactly the reason I wanted to double check. I >> saw an ad on the internet saying dynamic. >> >> Tnx agn & 73 >> Paul >> w2eck >> >> On Mon, Jan 28, 2019 at 2:33 PM Don Wilhelm wrote: >> >>> Paul, >>> >>> While I have seen ads saying it has a dynamic element, that is not the >>> case - it is an electret type. >>> >>> I believe it was designed to be a microphone you could plug into a >>> computer, and all of those are electret types. >>> >>> 73, >>> Don W3FPR >>> >>> >>> On 1/28/2019 2:26 PM, Paul Ecker wrote: >>>> Does anyone know if the CM500 has a Electret or Dynamic mic? >>>> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to wunder at wunderwood.org > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From ormandj at corenode.com Mon Jan 28 16:25:15 2019 From: ormandj at corenode.com (David Orman) Date: Mon, 28 Jan 2019 15:25:15 -0600 Subject: [Elecraft] KX3/PX3/KXPA100 + accessories for sale Message-ID: Hi, I have a KX3/PX3/KXPA100 combination I'd like to sell. I am the original owner, and purchased all of the above in 8/2014. The KX3/PX3 was purchased factory assembled, the KXPA100 was purchased as a kit, and assembled by me. The KX3 is fully loaded, as you will see below, to include the 2m option. All of the equipment is in excellent condition, and the PX3/KX3 have the Side-KX options installed, including the plastic covers. The covers are in good shape, with minor scratching as to be expected from plastic covers. Photos are included below, with covers off/on. In the interest of full disclosure, while performing the suggested capacitor modification to improve the power-on delay on the PX3 (as guided by Elecraft) a solder pad pulled up. This was repaired with a solder bridge to the new capacitor in question, and the unit has functioned perfectly since this time (April 2017). I am adjusting the requested price accordingly, even though there is no impact to the performance or functionality of this unit (and the power on delay is significantly improved!) I have included a video in the link below so you can see the PX3/KX3/KXPA100 functioning. I also adjust ref/scale and move around the band both via radio and via PX3 in the video, so you can see it is functioning as expected. Everything else is exactly as delivered from Elecraft, and functioning properly. The KX3 has had the full set of calibration performed on it, to include extended temperature compensation, nulling, and filters, as I have a bench of test equipment including a GPSDO locked signal generator. Here's what I'm including, and current list pricing: MH3 Hand Mic. for KX3 $59.95 KXFL3 Dual-Passband Roofing Filter $149.95 KXAT3 ATU for the KX3 $199.95 KXPD3 Precision Keyer Paddle $129.95 KXBC3 Int. NiMH Charger/Clk for KX3 $79.95 KX3-2M-AT 2M All-Mode Internal KX3 Option $259.95 KXPACBL KX3 to KXPA100 Adapt. Cable $49.95 KXPA100-K 100 W External Amplifier - Kit $749.95 KXAT100 Internal ATU for KXPA100 $379.95 KX3-F 160-6 M Xcvrr Assm $1,049.95 PX3-F Panadapter for KX3 - Factory Assembled $599.95 XG50 Simple 49.380 MHz Signal Source $39.95 SUBTOTAL $3,749.40 Keep in mind this subtotal does not include the Side-KX sides/covers. I am also including the original sides for PX3/KX3 in case you wish to use them instead. I do have the upgrade board for the paddle, as well, as well as various tools/parts for the accessories. I am also including a few KXUSB cables which currently list for $32.95. I'll also throw in the 2m antenna seen attached to the radio in the photos. KX3 serial number is 6755, PX3 is 0630, and KXPA100 is 1218. ------------------- I'm willing to sell the whole package for $2800 OBO. My reason for selling is simple, I've moved to a pure desktop setup as I've not found myself working remote as I had anticipated. https://photos.app.goo.gl/g6rqVoXqF8i1FnL63 has photos and the video showing operation, after which all were stored. I live in San Antonio, TX and would prefer to arrange for local (you can check it out in person) or regional pickup (happy to meet half-way). I have batteries, so if meeting elsewhere, we can turn it all on so you can verify operation if desired. My call-sign is K5DJO, name is David Orman, please respond directly to my email ( ormandj at corenode.com ) and I'll pass you the rest of my contact information so we can discuss via phone if you'd like! I can provide additional photos/videos if requested. Respectfully, David Orman / K5DJO From graziano at roccon.com Mon Jan 28 16:55:09 2019 From: graziano at roccon.com (Graziano Roccon (IW2NOY)) Date: Mon, 28 Jan 2019 22:55:09 +0100 Subject: [Elecraft] Looking for ELECRAFT KBPF3A for my K3s In-Reply-To: References: Message-ID: <79a9da55ef12ffa4c18fa23113b68a82@roccon.com> Hello, i am looking for a Elecraft KBPF3A for my K3s. If anyone want to sell it or know someone that want to sell it, please let me know. I would prefer in Italy or Europe, USA become too expensive for customs and shipment costs. Thanks a lot, Graziano IW2NOY From w5jr.lists at gmail.com Mon Jan 28 17:07:28 2019 From: w5jr.lists at gmail.com (Mike - W5JR) Date: Mon, 28 Jan 2019 17:07:28 -0500 Subject: [Elecraft] CM500 Mic ? In-Reply-To: <3E440EC3-E65B-43A2-A594-1CCACAE02D56@wunderwood.org> References: <899d03d3-18d8-4e41-ab9f-f00d37450826@embarqmail.com> <3E440EC3-E65B-43A2-A594-1CCACAE02D56@wunderwood.org> Message-ID: That explains where that battery pack came from!! I?d forgotten how I had acquired the adapter. tnx Mike / W5JR Alpharetta GA > On Jan 28, 2019, at 2:52 PM, Walter Underwood wrote: > > The published docs on the CM500 are a mess, but it is an electret. It even comes with a battery pack so you can use it with non-powered mic jacks. > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > >> On Jan 28, 2019, at 11:44 AM, Paul Ecker wrote: >> >> Don - thank you. That was exactly the reason I wanted to double check. I >> saw an ad on the internet saying dynamic. >> >> Tnx agn & 73 >> Paul >> w2eck >> >>> On Mon, Jan 28, 2019 at 2:33 PM Don Wilhelm wrote: >>> >>> Paul, >>> >>> While I have seen ads saying it has a dynamic element, that is not the >>> case - it is an electret type. >>> >>> I believe it was designed to be a microphone you could plug into a >>> computer, and all of those are electret types. >>> >>> 73, >>> Don W3FPR >>> >>> >>>> On 1/28/2019 2:26 PM, Paul Ecker wrote: >>>> Does anyone know if the CM500 has a Electret or Dynamic mic? >>>> >>> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to wunder at wunderwood.org > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w5jr.lists at gmail.com From rmcgraw at blomand.net Mon Jan 28 17:34:30 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Mon, 28 Jan 2019 16:34:30 -0600 Subject: [Elecraft] CM500 Mic ? In-Reply-To: References: <899d03d3-18d8-4e41-ab9f-f00d37450826@embarqmail.com> <3E440EC3-E65B-43A2-A594-1CCACAE02D56@wunderwood.org> Message-ID: <35C3CC94-B454-4BB9-96BC-0EBE544CA55E@blomand.net> Yes I always find it interesting they include a battery pak but say it's dynamic. Most all of the descriptions I've seen indicate it is a dynamic mike. No it's an Electrect element. Bob, K4TAX Sent from my iPhone > On Jan 28, 2019, at 4:07 PM, Mike - W5JR wrote: > > That explains where that battery pack came from!! I?d forgotten how I had acquired the adapter. > > tnx > Mike / W5JR > Alpharetta GA > > >> On Jan 28, 2019, at 2:52 PM, Walter Underwood wrote: >> >> The published docs on the CM500 are a mess, but it is an electret. It even comes with a battery pack so you can use it with non-powered mic jacks. >> >> wunder >> K6WRU >> Walter Underwood >> CM87wj >> http://observer.wunderwood.org/ (my blog) >> >>> On Jan 28, 2019, at 11:44 AM, Paul Ecker wrote: >>> >>> Don - thank you. That was exactly the reason I wanted to double check. I >>> saw an ad on the internet saying dynamic. >>> >>> Tnx agn & 73 >>> Paul >>> w2eck >>> >>>> On Mon, Jan 28, 2019 at 2:33 PM Don Wilhelm wrote: >>>> >>>> Paul, >>>> >>>> While I have seen ads saying it has a dynamic element, that is not the >>>> case - it is an electret type. >>>> >>>> I believe it was designed to be a microphone you could plug into a >>>> computer, and all of those are electret types. >>>> >>>> 73, >>>> Don W3FPR >>>> >>>> >>>>> On 1/28/2019 2:26 PM, Paul Ecker wrote: >>>>> Does anyone know if the CM500 has a Electret or Dynamic mic? >>>>> >>>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to wunder at wunderwood.org >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to w5jr.lists at gmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net From n7us at arrl.net Mon Jan 28 20:18:43 2019 From: n7us at arrl.net (Jim N7US) Date: Mon, 28 Jan 2019 19:18:43 -0600 Subject: [Elecraft] FW: [Elecraft-K3] K3S Comparison table finalized (link attached) References: <28563.1548638004656381899@groups.io> <3309867F-0C2E-43E4-874D-42D326B9BA57@nc0b.com> Message-ID: <023501d4b770$96306080$c2912180$@arrl.net> I'd be interested in seeing a similar comparison of the K3S to the FlexRadio. Jim N7US -----Original Message----- My two cents: > Rob wrote: > > I would count the order differently if numbering is of interest. The radio at #1 cannot be reproduced with current software. Clarified recently in footnote "y" of the RX performance table. > That makes the K3S #1 and the 7610 #9 if you want to count for some reason. The difference in 2 kHz dynamic range is 106 dB compared to 98 dB. The table is sorted on 2 kHz IMDDR3. However, the table also shows dramatic differences in blocking dynamic range. For example, the K3S is 20 to 30 dB stronger in this regard than all of the direct-sampling radios in the table. This is due to the K3S having narrow-band filtering (crystal filters) ahead of the ADC. This can greatly reduce desense and other artifacts in any high-signal situation (Field Day, KW neighbor, multi-TX station, etc.). Wayne N6KR From ww3s at zoominternet.net Mon Jan 28 20:27:30 2019 From: ww3s at zoominternet.net (Jamie WW3S) Date: Mon, 28 Jan 2019 20:27:30 -0500 Subject: [Elecraft] FW: [Elecraft-K3] K3S Comparison table finalized (linkattached) In-Reply-To: <023501d4b770$96306080$c2912180$@arrl.net> References: <28563.1548638004656381899@groups.io><3309867F-0C2E-43E4-874D-42D326B9BA57@nc0b.com> <023501d4b770$96306080$c2912180$@arrl.net> Message-ID: <66642576F27B436291BC26177589B7D1@ww3s> and that was my real life experience in last weekends 160 contest....I felt the 7610 could hear just a bit better than the K3, especially those ESP signals right at the noise.....I worked several DX I wouldn?t have with the K3.....BUT.......in crowded condx, the 7610 thumped and pumped when someone was close to my passband, even with a 200 hz filter enabled. I didn?t get any of that with the K3, its front end is like a brick wall......to be fair, I had the noise blanker enabled on the 7610, which some comments post contest said that could be some of the thumping I experienced..... -----Original Message----- From: Jim N7US Sent: Monday, January 28, 2019 8:18 PM To: Elecraft Reflector Subject: [Elecraft] FW: [Elecraft-K3] K3S Comparison table finalized (linkattached) I'd be interested in seeing a similar comparison of the K3S to the FlexRadio. Jim N7US -----Original Message----- My two cents: > Rob wrote: > > I would count the order differently if numbering is of interest. The radio at #1 cannot be reproduced with current software. Clarified recently in footnote "y" of the RX performance table. > That makes the K3S #1 and the 7610 #9 if you want to count for some reason. The difference in 2 kHz dynamic range is 106 dB compared to 98 dB. The table is sorted on 2 kHz IMDDR3. However, the table also shows dramatic differences in blocking dynamic range. For example, the K3S is 20 to 30 dB stronger in this regard than all of the direct-sampling radios in the table. This is due to the K3S having narrow-band filtering (crystal filters) ahead of the ADC. This can greatly reduce desense and other artifacts in any high-signal situation (Field Day, KW neighbor, multi-TX station, etc.). Wayne N6KR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ww3s at zoominternet.net --- This email has been checked for viruses by AVG. https://www.avg.com From john at kk9a.com Mon Jan 28 21:19:58 2019 From: john at kk9a.com (john at kk9a.com) Date: Mon, 28 Jan 2019 21:19:58 -0500 Subject: [Elecraft] CM500 Mic ? Message-ID: <000301d4b779$223fcf40$66bf6dc0$@com> The manufacture says it is a sensitive electric microphone: https://usa.yamaha.com/products/music_production/accessories/cm500/index.htm l So does Amazon: https://www.amazon.com/Yamaha-CM500-Headset-Built-Microphone/dp/B000BZ6ZX0/r ef=sr_1_1?ie=UTF8&qid=1548727771&sr=8-1&keywords=yamaha+cm500 Perhaps that translates to Electret:) John KK9A Paul Ecker W2ECK wrote: Does anyone know if the CM500 has a Electret or Dynamic mic? 73 Paul w2eck From kkinderen at gmail.com Mon Jan 28 21:29:50 2019 From: kkinderen at gmail.com (Kevin der Kinderen) Date: Mon, 28 Jan 2019 21:29:50 -0500 Subject: [Elecraft] KAT500 Utility Operate -> Memorize Message-ID: How exactly does the Memorize button work in the Operate tab of the KAT500 utility. Is it an on/off global or do I have to hit it each time the tuner tunes a new frequency? 73, Kevin K4VD From rmcgraw at blomand.net Mon Jan 28 21:41:02 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Mon, 28 Jan 2019 20:41:02 -0600 Subject: [Elecraft] CM500 Mic ? In-Reply-To: <000301d4b779$223fcf40$66bf6dc0$@com> References: <000301d4b779$223fcf40$66bf6dc0$@com> Message-ID: Yes but......when one looks at the SPECS? one will see "Microphone Type:??? Dynamic".??? I guess one could consider that to be "electric". 73 Bob, K4TAX On 1/28/2019 8:19 PM, john at kk9a.com wrote: > The manufacture says it is a sensitive electric microphone: > https://usa.yamaha.com/products/music_production/accessories/cm500/index.htm > l > > So does Amazon: > https://www.amazon.com/Yamaha-CM500-Headset-Built-Microphone/dp/B000BZ6ZX0/r > ef=sr_1_1?ie=UTF8&qid=1548727771&sr=8-1&keywords=yamaha+cm500 > > Perhaps that translates to Electret:) > > John KK9A > > > > Paul Ecker W2ECK wrote: > > Does anyone know if the CM500 has a Electret or Dynamic mic? > > 73 > Paul > w2eck > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From rmcgraw at blomand.net Mon Jan 28 21:50:14 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Mon, 28 Jan 2019 20:50:14 -0600 Subject: [Elecraft] KAT500 Utility Operate -> Memorize In-Reply-To: References: Message-ID: <9d1e42d1-4276-a39b-66eb-ff7c7d96ec68@blomand.net> The tuner will memorize the antenna selection and matching elements every time it tunes. As to the Utility, what ever you change in the Utility will be be sent to the tuner when Memorize is selected.?? ? Not it is not necessary to hit Memorize every time the tuner resolves a match. 73 Bob, K4TAX On 1/28/2019 8:29 PM, Kevin der Kinderen wrote: > How exactly does the Memorize button work in the Operate tab of the KAT500 > utility. Is it an on/off global or do I have to hit it each time the tuner > tunes a new frequency? > > 73, > Kevin K4VD > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From nr4c at widomaker.com Mon Jan 28 21:56:20 2019 From: nr4c at widomaker.com (Nr4c) Date: Mon, 28 Jan 2019 21:56:20 -0500 Subject: [Elecraft] CM500 Mic ? In-Reply-To: <000301d4b779$223fcf40$66bf6dc0$@com> References: <000301d4b779$223fcf40$66bf6dc0$@com> Message-ID: <77D1564D-68E8-4CC2-B522-F12DE2BFBFDB@widomaker.com> The packaging used to say ?Dynamic? mic. But it?s not. It?s an electret. And it comes with a small battery box to provide the bias when using with radios that don?t provide bias on the audio jack. Sent from my iPhone ...nr4c. bill > On Jan 28, 2019, at 9:19 PM, wrote: > > The manufacture says it is a sensitive electric microphone: > https://usa.yamaha.com/products/music_production/accessories/cm500/index.htm > l > > So does Amazon: > https://www.amazon.com/Yamaha-CM500-Headset-Built-Microphone/dp/B000BZ6ZX0/r > ef=sr_1_1?ie=UTF8&qid=1548727771&sr=8-1&keywords=yamaha+cm500 > > Perhaps that translates to Electret:) > > John KK9A > > > > Paul Ecker W2ECK wrote: > > Does anyone know if the CM500 has a Electret or Dynamic mic? > > 73 > Paul > w2eck > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com From w5mikejuliet at gmail.com Mon Jan 28 23:06:15 2019 From: w5mikejuliet at gmail.com (Madison Jones) Date: Mon, 28 Jan 2019 22:06:15 -0600 Subject: [Elecraft] WTB K2 Message-ID: Anyone have a K2 for sale? Contact me off list at w5mikejuliet at gmail.com. Madison Jones W5MJ From dick at elecraft.com Mon Jan 28 23:23:39 2019 From: dick at elecraft.com (Dick Dievendorff) Date: Mon, 28 Jan 2019 22:23:39 -0600 Subject: [Elecraft] KAT500 Utility Operate -> Memorize In-Reply-To: References: Message-ID: <4FD82082-2628-4A77-B7C4-BCDC3D2F3EE9@elecraft.com> See KAT500 Utility help. ATU settings found by tune are stored without pressing the button. If you create an atu setting yourself, using the radio buttons for inductors and capacitors, you can save it with that button. 73 de Dick, K6KR > On Jan 28, 2019, at 20:29, Kevin der Kinderen wrote: > > How exactly does the Memorize button work in the Operate tab of the KAT500 > utility. Is it an on/off global or do I have to hit it each time the tuner > tunes a new frequency? > > 73, > Kevin K4VD > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to dick at elecraft.com From wunder at wunderwood.org Mon Jan 28 23:30:17 2019 From: wunder at wunderwood.org (Walter Underwood) Date: Mon, 28 Jan 2019 20:30:17 -0800 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: References: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> <54a1ebd9-fbbb-db4b-ad8d-cf73c54c059a@embarqmail.com> Message-ID: <6987B7E6-9F79-4AEF-90DA-595ACD351161@wunderwood.org> The only program that requires significant CPU is WSJT-X, for JT65 and FT8. The fldigi program might needs more CPU for some modes, but I?ve never noticed it. Macs usually have very high performance hardware for the year when they are released. I would expect any Mac from the last five years or so to work fine. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 28, 2019, at 4:59 AM, Dave Sublette wrote: > > I use a mac mini running Parallels and Windows 7/64bit. It works very > well. I would think any .odel mac would do the job. > > Dave, K4TO > > On Sun, Jan 27, 2019, 11:51 PM Don Wilhelm >> Steve, >> >> The only software application specifically for the KX3 is KX3 Utility >> which takes very little of the computer resources. >> >> Perhaps a better question is -- "What processing capability is required >> for the software applications that I want to run?" >> >> That will determine how powerful a computer you will need - Mac or other >> OS. >> >> 73, >> Don W3FPR >> >> On 1/27/2019 12:08 PM, Steve Grimaud (Gmail) wrote: >>> I'm trying to find a good new or used Macbook or Mac mini to begin using >>> with my KX3. I had used a PC with ASUS Xonar U7 and/or Signalink USB. >>> What will I need to keep, drop or use in a different way to get a Mac >>> unit working with my KX3? I'm especially interested in digital signals. >>> Who here knows what works best. >>> >> ______________________________________________________________ From jackbrindle at me.com Tue Jan 29 00:59:24 2019 From: jackbrindle at me.com (Jack Brindle) Date: Mon, 28 Jan 2019 21:59:24 -0800 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <6987B7E6-9F79-4AEF-90DA-595ACD351161@wunderwood.org> References: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> <54a1ebd9-fbbb-db4b-ad8d-cf73c54c059a@embarqmail.com> <6987B7E6-9F79-4AEF-90DA-595ACD351161@wunderwood.org> Message-ID: <96C04A5C-9987-45DE-BF3F-7B065109E6AE@me.com> WSJT-X runs just fine on my 2010 Mac mini with a core-2 duo processor. Almost every Mac that runs an Intel processor has at least a Core-2 Duo (the exception being the very first Intel iMac that used a single core Core-2 processor). I would not want to use a Mac with a sub 2 GHz processor - the low end MacBook Air and last generation low-end mini come to mind here. Everything else should be prime for a shack computer. If you plan on running VMware Fusion, Parallels or VirtualBox you want a powerful Mac with at least two cores, the more the better. Give the Mac at least one of those and Windows as many as you can. You don?t want to starve either OS since both are running simultaneously. My choice at this time to replace my shack mini (which is constrained to El Capitan) will be a 6-Core i7 mini with 16GB or Ram (don?t scrimp here) and 1TB of flash disk. It will last a long time, so putting extra money into it up front is a good thing. If Apple were to release an 8-Core i9 version of the mini that would be my choice instead? On the laptop side, my choice was a 15? MacBook Pro with 4-core i7, 16GB memory and 500GB flash. Again, don?t scrimp. If it follows the pattern of my last MacBook Pro, this baby will last me eight years or so (the old one, constrained to El Capitan is still in use as a server). Basically, get as much horsepower as you can afford. That means lots of cores in the processor, lots of RAM, and a reasonable amount of flash. 256GB is a minimum here. Macs last a long time, so you are making an investment for the long term. Good luck and enjoy your Mac! Jack, W6FB > On Jan 28, 2019, at 8:30 PM, Walter Underwood wrote: > > The only program that requires significant CPU is WSJT-X, for JT65 and FT8. The fldigi program might needs more CPU for some modes, but I?ve never noticed it. Macs usually have very high performance hardware for the year when they are released. I would expect any Mac from the last five years or so to work fine. > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > >> On Jan 28, 2019, at 4:59 AM, Dave Sublette wrote: >> >> I use a mac mini running Parallels and Windows 7/64bit. It works very >> well. I would think any .odel mac would do the job. >> >> Dave, K4TO >> >> On Sun, Jan 27, 2019, 11:51 PM Don Wilhelm > >>> Steve, >>> >>> The only software application specifically for the KX3 is KX3 Utility >>> which takes very little of the computer resources. >>> >>> Perhaps a better question is -- "What processing capability is required >>> for the software applications that I want to run?" >>> >>> That will determine how powerful a computer you will need - Mac or other >>> OS. >>> >>> 73, >>> Don W3FPR >>> >>> On 1/27/2019 12:08 PM, Steve Grimaud (Gmail) wrote: >>>> I'm trying to find a good new or used Macbook or Mac mini to begin using >>>> with my KX3. I had used a PC with ASUS Xonar U7 and/or Signalink USB. >>>> What will I need to keep, drop or use in a different way to get a Mac >>>> unit working with my KX3? I'm especially interested in digital signals. >>>> Who here knows what works best. >>>> >>> ______________________________________________________________ > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jackbrindle at me.com From wb6rse1 at mac.com Tue Jan 29 01:45:53 2019 From: wb6rse1 at mac.com (wb6rse1 at mac.com) Date: Mon, 28 Jan 2019 22:45:53 -0800 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <96C04A5C-9987-45DE-BF3F-7B065109E6AE@me.com> References: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> <54a1ebd9-fbbb-db4b-ad8d-cf73c54c059a@embarqmail.com> <6987B7E6-9F79-4AEF-90DA-595ACD351161@wunderwood.org> <96C04A5C-9987-45DE-BF3F-7B065109E6AE@me.com> Message-ID: <54D7E87E-84F3-4D2F-9B0A-6EE2DA4EE11D@mac.com> If one wants to use cocoaModem for RTTY, PSK or the other modes it supports, note that it runs fine under Mac OS 10.12 and has been reported to run under Mac OS 10.13 (I personally haven't tried it.) cocoaModem is a 32 bit program and possibly won't run under OS 10.14 and above that might require programs to be 64 bit. As of 9-24-2018 see: > https://support.apple.com/en-us/HT208436 About this Mac > System Reports > Software > Applications will show which programs loaded on the machine are 64 bit compatible. The source code is available for cocoaModem but the developer hasn't supported the program in quite some time. Macs as supplied with OS 10.14 and above could have a problem with cocoaModem - which is an excellent program for dual receive split RTTY operation. So it's more than just which Mac to get, it's will the machine run the applications you want to run. If anyone has run cocoaModem under 10.13 or 10.14 please report. 73 - Steve WB6RSE From frantz at pwpconsult.com Tue Jan 29 02:22:00 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Mon, 28 Jan 2019 23:22:00 -0800 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <54D7E87E-84F3-4D2F-9B0A-6EE2DA4EE11D@mac.com> Message-ID: I am running cocoaModem successfully on MacOS 10.14.3. 73 Bill AE6JV On 1/28/19 at 10:45 PM, elecraft at mailman.qth.net (Steve Lawrence via Elecraft) wrote: >If one wants to use cocoaModem for RTTY, PSK or the other modes >it supports, note that it runs fine under Mac OS 10.12 and has >been reported to run under Mac OS 10.13 (I personally haven't >tried it.) > >cocoaModem is a 32 bit program and possibly won't run under OS >10.14 and above that might require programs to be 64 bit. As of >9-24-2018 see: > >>https://support.apple.com/en-us/HT208436 > >About this Mac > System Reports > Software > Applications will >show which programs loaded on the machine are 64 bit compatible. ----------------------------------------------------------------------- Bill Frantz | When all else fails: Voice | Periwinkle (408)356-8506 | and CW. | 16345 Englewood Ave www.pwpconsult.com | | Los Gatos, CA 95032 From peter.wollan at gmail.com Tue Jan 29 08:00:15 2019 From: peter.wollan at gmail.com (Peter Wollan) Date: Tue, 29 Jan 2019 07:00:15 -0600 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: References: <54D7E87E-84F3-4D2F-9B0A-6EE2DA4EE11D@mac.com> Message-ID: CocoaModem fails for me under MacOS 10.14.2. CocoaNEC runs fine. Peter W0LLN On Tue, Jan 29, 2019 at 1:22 AM Bill Frantz wrote: > I am running cocoaModem successfully on MacOS 10.14.3. > > 73 Bill AE6JV > > On 1/28/19 at 10:45 PM, elecraft at mailman.qth.net (Steve Lawrence > via Elecraft) wrote: > > >If one wants to use cocoaModem for RTTY, PSK or the other modes > >it supports, note that it runs fine under Mac OS 10.12 and has > >been reported to run under Mac OS 10.13 (I personally haven't > >tried it.) > > > >cocoaModem is a 32 bit program and possibly won't run under OS > >10.14 and above that might require programs to be 64 bit. As of > >9-24-2018 see: > > > >>https://support.apple.com/en-us/HT208436 < > https://support.apple.com/en-us/HT208436> > > > >About this Mac > System Reports > Software > Applications will > >show which programs loaded on the machine are 64 bit compatible. > ----------------------------------------------------------------------- > Bill Frantz | When all else fails: Voice | Periwinkle > (408)356-8506 | and CW. | 16345 > Englewood Ave > www.pwpconsult.com | | Los Gatos, > CA 95032 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to peter.wollan at gmail.com > From graziano at roccon.com Tue Jan 29 08:33:09 2019 From: graziano at roccon.com (Graziano Roccon (IW2NOY)) Date: Tue, 29 Jan 2019 14:33:09 +0100 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: References: <54D7E87E-84F3-4D2F-9B0A-6EE2DA4EE11D@mac.com> Message-ID: <27c89bb3dbe0971035c2f661a588bbf3@roccon.com> Hello, why use CocoaModem at any cost, when FL-Digi is more complete and runs fine on any Mac OS ? 73's de IW2NOY Graziano PS If looking also for a good logging program, MacloggerDX (payment) is probably the best, for free there is RUMLog that is a great alternative (very nice also) Il 2019-01-29 14:00 Peter Wollan ha scritto: > CocoaModem fails for me under MacOS 10.14.2. CocoaNEC runs fine. > > Peter W0LLN > > On Tue, Jan 29, 2019 at 1:22 AM Bill Frantz > wrote: > >> I am running cocoaModem successfully on MacOS 10.14.3. >> >> 73 Bill AE6JV >> >> On 1/28/19 at 10:45 PM, elecraft at mailman.qth.net (Steve Lawrence >> via Elecraft) wrote: >> >> >If one wants to use cocoaModem for RTTY, PSK or the other modes >> >it supports, note that it runs fine under Mac OS 10.12 and has >> >been reported to run under Mac OS 10.13 (I personally haven't >> >tried it.) >> > >> >cocoaModem is a 32 bit program and possibly won't run under OS >> >10.14 and above that might require programs to be 64 bit. As of >> >9-24-2018 see: >> > >> >>https://support.apple.com/en-us/HT208436 < >> https://support.apple.com/en-us/HT208436> >> > >> >About this Mac > System Reports > Software > Applications will >> >show which programs loaded on the machine are 64 bit compatible. >> ----------------------------------------------------------------------- >> Bill Frantz | When all else fails: Voice | Periwinkle >> (408)356-8506 | and CW. | 16345 >> Englewood Ave >> www.pwpconsult.com | | Los Gatos, >> CA 95032 >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to peter.wollan at gmail.com >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to graziano at roccon.com From david at aslinvc.com Tue Jan 29 10:08:13 2019 From: david at aslinvc.com (Dave G3WGN M6O) Date: Tue, 29 Jan 2019 08:08:13 -0700 (MST) Subject: [Elecraft] CM500 Mic ? In-Reply-To: <77D1564D-68E8-4CC2-B522-F12DE2BFBFDB@widomaker.com> References: <000301d4b779$223fcf40$66bf6dc0$@com> <77D1564D-68E8-4CC2-B522-F12DE2BFBFDB@widomaker.com> Message-ID: <1548774493676-0.post@n2.nabble.com> Packaging still does say dynamic (as of a December 2018 purchase), but it IS an electret for sure. 73, David G3WGN M6O Nr4c wrote > The packaging used to say ?Dynamic? mic. But it?s not. It?s an electret. > > And it comes with a small battery box to provide the bias when using with > radios that don?t provide bias on the audio jack. > > Sent from my iPhone > ...nr4c. bill > > >> On Jan 28, 2019, at 9:19 PM, < > john@ > > < > john@ > > wrote: >> >> The manufacture says it is a sensitive electric microphone: >> https://usa.yamaha.com/products/music_production/accessories/cm500/index.htm >> l >> >> So does Amazon: >> https://www.amazon.com/Yamaha-CM500-Headset-Built-Microphone/dp/B000BZ6ZX0/r >> ef=sr_1_1?ie=UTF8&qid=1548727771&sr=8-1&keywords=yamaha+cm500 >> >> Perhaps that translates to Electret:) >> >> John KK9A >> >> >> >> Paul Ecker W2ECK wrote: >> >> Does anyone know if the CM500 has a Electret or Dynamic mic? >> >> 73 >> Paul >> w2eck >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto: > Elecraft at .qth >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to > nr4c@ > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: > Elecraft at .qth > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to > lists+1215531472858-365791 at .nabble -- Sent from: http://elecraft.365791.n2.nabble.com/ From k2asp at kanafi.org Tue Jan 29 12:45:02 2019 From: k2asp at kanafi.org (Phil Kane) Date: Tue, 29 Jan 2019 09:45:02 -0800 Subject: [Elecraft] CM500 Mic ? In-Reply-To: References: <000301d4b779$223fcf40$66bf6dc0$@com> Message-ID: <1dff2266-dc9e-7fd2-77b7-8c25e9d46411@kanafi.org> On 1/28/2019 6:41 PM, Bob McGraw K4TAX wrote: > Yes but......when one looks at the SPECS? one will see "Microphone > Type:??? Dynamic".??? I guess one could consider that to be "electric". As one of my mentors in the legal profession taught me: when confronted with two opposing statements from the same source, you ask "in which one are you lying?". :) 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 >From a Clearing in the Silicon Forest Beaverton (Washington County) Oregon From rna at mosslight.com Tue Jan 29 13:22:20 2019 From: rna at mosslight.com (Robert Albano) Date: Tue, 29 Jan 2019 10:22:20 -0800 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <27c89bb3dbe0971035c2f661a588bbf3@roccon.com> References: <54D7E87E-84F3-4D2F-9B0A-6EE2DA4EE11D@mac.com> <27c89bb3dbe0971035c2f661a588bbf3@roccon.com> Message-ID: <03EDB920-17A0-48D7-A8C3-514A8DCBB76F@mosslight.com> Hi I have been on the air about a year. I use a Mid 2014 Retina Mac Pro with High Sierra running WSJT-X, Aether for logging, JT-Bridge to connect between Aether and WSJT-x. Sound card is SignaLink. https://www.aetherlog.com/ https://jt-bridge.eller.nu/ Robert K7RNA From jh3sif at sumaq.jp Tue Jan 29 15:45:14 2019 From: jh3sif at sumaq.jp (Keith Onishi) Date: Wed, 30 Jan 2019 05:45:14 +0900 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> References: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> Message-ID: <81616743-1B13-41C8-A8BB-74E836321AEE@sumaq.jp> Hello, I am Kiichiro Onishi, JH3SIF, having K3 with SN 07902. I hoped my K3 had been shipped with 60m transmission disabled since my KX3 was shipped with 60m transmission disabled and your signed certification indicating the disablement. As you may know, hams operating in JA are not allowed to transmit on 60m and all TX/TRX MUST not be capable to transmit on the band, So, my K3 MUST have 60m transmission capability disabled so that I can have regal permission to operate my K3 in JA. Can you help me to disable the 60m transmission? 73 de JH3SIF, Kiichiro > 2019/01/28 2:08?Steve Grimaud (Gmail) ????: > > I'm trying to find a good new or used Macbook or Mac mini to begin using with my KX3. I had used a PC with ASUS Xonar U7 and/or Signalink USB. What will I need to keep, drop or use in a different way to get a Mac unit working with my KX3? I'm especially interested in digital signals. Who here knows what works best. > > 73 > > Steve w3swg > > -- > Steve Grimaud > steve.grimaud at gmail.com > 240-753-5380 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jh3sif at sumaq.jp From jstengrevics at comcast.net Tue Jan 29 16:18:36 2019 From: jstengrevics at comcast.net (John Stengrevics) Date: Tue, 29 Jan 2019 16:18:36 -0500 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <81616743-1B13-41C8-A8BB-74E836321AEE@sumaq.jp> References: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> <81616743-1B13-41C8-A8BB-74E836321AEE@sumaq.jp> Message-ID: <5B7ED7F6-885A-4270-86BD-A54FC7ADE255@comcast.net> Kiichiro-san, Please contact Elecraft support: support at elecraft.com 73, John WA1EAZ > On Jan 29, 2019, at 3:45 PM, Keith Onishi wrote: > > Hello, > > I am Kiichiro Onishi, JH3SIF, having K3 with SN 07902. > > I hoped my K3 had been shipped with 60m transmission disabled since my KX3 was shipped with 60m transmission disabled and your signed certification indicating the disablement. > As you may know, hams operating in JA are not allowed to transmit on 60m and all TX/TRX MUST not be capable to transmit on the band, > So, my K3 MUST have 60m transmission capability disabled so that I can have regal permission to operate my K3 in JA. > Can you help me to disable the 60m transmission? > > 73 de JH3SIF, Kiichiro > >> 2019/01/28 2:08?Steve Grimaud (Gmail) >????: >> >> I'm trying to find a good new or used Macbook or Mac mini to begin using with my KX3. I had used a PC with ASUS Xonar U7 and/or Signalink USB. What will I need to keep, drop or use in a different way to get a Mac unit working with my KX3? I'm especially interested in digital signals. Who here knows what works best. >> >> 73 >> >> Steve w3swg >> >> -- >> Steve Grimaud >> steve.grimaud at gmail.com >> 240-753-5380 >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to jh3sif at sumaq.jp > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jstengrevics at comcast.net From jh3sif at sumaq.jp Tue Jan 29 16:21:54 2019 From: jh3sif at sumaq.jp (jh3sif at sumaq.jp) Date: Wed, 30 Jan 2019 06:21:54 +0900 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <5B7ED7F6-885A-4270-86BD-A54FC7ADE255@comcast.net> References: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> <81616743-1B13-41C8-A8BB-74E836321AEE@sumaq.jp> <5B7ED7F6-885A-4270-86BD-A54FC7ADE255@comcast.net> Message-ID: <7F579313-21E5-4E21-B169-0A4F9CAFCFF9@sumaq.jp> I am very sorry. I sent wrong message here. What I intended to send was; *** Hi Steve, I use Mid 2014 Macbook Pro, macOS High Sierra, with my KX3 for FT8 operation. Some modes of Mac do not have Audio-in jack. So you may need an external USB audio device. In between Mac and KX3 is Griffin?s iMic. I use VOX instead of PTT. 73 de JH3SIF, Keith *** > 2019/01/30 6:18?John Stengrevics ????: > > Kiichiro-san, > > Please contact Elecraft support: support at elecraft.com > > 73, > > John > WA1EAZ > >> On Jan 29, 2019, at 3:45 PM, Keith Onishi wrote: >> >> Hello, >> >> I am Kiichiro Onishi, JH3SIF, having K3 with SN 07902. >> >> I hoped my K3 had been shipped with 60m transmission disabled since my KX3 was shipped with 60m transmission disabled and your signed certification indicating the disablement. >> As you may know, hams operating in JA are not allowed to transmit on 60m and all TX/TRX MUST not be capable to transmit on the band, >> So, my K3 MUST have 60m transmission capability disabled so that I can have regal permission to operate my K3 in JA. >> Can you help me to disable the 60m transmission? >> >> 73 de JH3SIF, Kiichiro >> >>> 2019/01/28 2:08?Steve Grimaud (Gmail) ????: >>> >>> I'm trying to find a good new or used Macbook or Mac mini to begin using with my KX3. I had used a PC with ASUS Xonar U7 and/or Signalink USB. What will I need to keep, drop or use in a different way to get a Mac unit working with my KX3? I'm especially interested in digital signals. Who here knows what works best. >>> >>> 73 >>> >>> Steve w3swg >>> >>> -- >>> Steve Grimaud >>> steve.grimaud at gmail.com >>> 240-753-5380 >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to jh3sif at sumaq.jp >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to jstengrevics at comcast.net > From casey at tomochka.com Tue Jan 29 16:28:55 2019 From: casey at tomochka.com (TI2/NA7U) Date: Tue, 29 Jan 2019 14:28:55 -0700 (MST) Subject: [Elecraft] KPA100 Rev C errata Rev. C-5, correct version? Message-ID: <1548797335730-0.post@n2.nabble.com> I have a new KPA100 kit, everything still in the box, with assembly manual Appendix G, Rev C, Feb. 11, 2004 and a single errata sheet for that with notation Rev. C-5, July 20, 2005. Is that the only errata sheet I need or are there intervening/subsequent ones too? I ran through the errata and they certainly match up to the manual ... 73, Casey ----- Cloud Warmer Ham Radio Blog -- Sent from: http://elecraft.365791.n2.nabble.com/ From frantz at pwpconsult.com Tue Jan 29 16:55:57 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Tue, 29 Jan 2019 13:55:57 -0800 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: Message-ID: I am running Version 2.0 release 1.03. This is a version which has had the minimum level of upgrades to run on modern MacOSes. For example, RTTY mode doesn't work but Dual RTTY does. Since cocoaModem is an open source program, I have no problem sending you a copy to try. 73 Bill AE6JV On 1/29/19 at 5:00 AM, peter.wollan at gmail.com (Peter Wollan) wrote: >CocoaModem fails for me under MacOS 10.14.2. CocoaNEC runs fine. ----------------------------------------------------------------------- Bill Frantz | gets() remains as a monument | Periwinkle (408)356-8506 | to C's continuing support of | 16345 Englewood Ave www.pwpconsult.com | buffer overruns. | Los Gatos, CA 95032 From frantz at pwpconsult.com Tue Jan 29 16:55:58 2019 From: frantz at pwpconsult.com (Bill Frantz) Date: Tue, 29 Jan 2019 13:55:58 -0800 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <27c89bb3dbe0971035c2f661a588bbf3@roccon.com> Message-ID: cocoaModem has Dual RTTY mode which decodes both the main and sub receivers. This mode is useful in a DX pileup. I'm planning on seeing how it works with RTTY contesting, where I complete a S&P QSO on the main receiver, while using the sub to find the next station. The response of the crossed-loop tuning aid is better, making signal tuning easier. I think its decoding algorithms are better, but others may disagree. The bigest problem with cocoaModem is that it was written by a signal processing genius, but the coding style drives most Mac programmers crazy. It also seeme to have some threading problems, but they don't occur often enough to be really painful. 73 Bill AE6JV On 1/29/19 at 5:33 AM, graziano at roccon.com (Graziano Roccon (IW2NOY)) wrote: >why use CocoaModem at any cost, when FL-Digi is more complete and runs fine on any Mac OS ? ----------------------------------------------------------------------- Bill Frantz | Concurrency is hard. 12 out | Periwinkle (408)356-8506 | 10 programmers get it wrong. | 16345 Englewood Ave www.pwpconsult.com | - Jeff Frantz | Los Gatos, CA 95032 From tom.campie at gmail.com Tue Jan 29 16:57:57 2019 From: tom.campie at gmail.com (TJ Campie) Date: Tue, 29 Jan 2019 15:57:57 -0600 Subject: [Elecraft] Feeler: TS-590S trade for K3/100 Message-ID: Kind of an off topic request, but would anyone be remotely interested in a TS-590s plus cash trade for a pretty bare bones K3/100? 73, W0EA TJ ---- QRP ARCI #14612 | CW Ops #953 | SKCC #4593T NAQCC #3768 | Flying Pigs QRP #2254 http://W0EA.us *Because QRO is too easy (but sometimes required!)* From W2xj at w2xj.net Tue Jan 29 17:14:57 2019 From: W2xj at w2xj.net (W2xj) Date: Tue, 29 Jan 2019 17:14:57 -0500 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <03EDB920-17A0-48D7-A8C3-514A8DCBB76F@mosslight.com> References: <54D7E87E-84F3-4D2F-9B0A-6EE2DA4EE11D@mac.com> <27c89bb3dbe0971035c2f661a588bbf3@roccon.com> <03EDB920-17A0-48D7-A8C3-514A8DCBB76F@mosslight.com> Message-ID: Any relatively current Mac can run Windows and Linux as virtual machines so the use of any software is possible. Sent from my iPad > On Jan 29, 2019, at 1:22 PM, Robert Albano wrote: > > Hi > > I have been on the air about a year. > > I use a Mid 2014 Retina Mac Pro with High Sierra running WSJT-X, Aether for logging, JT-Bridge to connect between Aether and WSJT-x. Sound card is SignaLink. > > https://www.aetherlog.com/ > > https://jt-bridge.eller.nu/ > > > Robert > K7RNA > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w2xj at w2xj.net > From donwilh at embarqmail.com Tue Jan 29 17:36:05 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Tue, 29 Jan 2019 17:36:05 -0500 Subject: [Elecraft] KPA100 Rev C errata Rev. C-5, correct version? In-Reply-To: <1548797335730-0.post@n2.nabble.com> References: <1548797335730-0.post@n2.nabble.com> Message-ID: <4dad1492-647e-4004-004b-cfecf203400c@embarqmail.com> Casey, You need only the latest errata sheet. Earlier errata is included in the latest one. 73, Don W3FPR On 1/29/2019 4:28 PM, TI2/NA7U wrote: > I have a new KPA100 kit, everything still in the box, with assembly manual > Appendix G, Rev C, Feb. 11, 2004 and a single errata sheet for that with > notation Rev. C-5, July 20, 2005. > > Is that the only errata sheet I need or are there intervening/subsequent > ones too? I ran through the errata and they certainly match up to the manual > ... From a.durbin at msn.com Tue Jan 29 18:36:10 2019 From: a.durbin at msn.com (Andy Durbin) Date: Tue, 29 Jan 2019 23:36:10 +0000 Subject: [Elecraft] KAT500 Utility Operate -> Memorize Message-ID: "The tuner will memorize the antenna selection and matching elements every time it tunes." Yes, if the tuning solution is the result of an auto tune, then it is memorized. However if the tuning solution was set manually, then SM; is needed to memorize that solution for the current frequency. "SM (Save Memory, SET only) SET format: SM; or SM fffff; where fffff is a frequency in kHz. SM saves the current tuner settings (antenna, side, inductor, capacitor, and bypass VSWR) in the tuner memory for the indicated (or most recent transmit) frequency. If fffff is zero or missing, the last Transmit frequency is used. If transmitting, the measured frequency is used instead of fffff. SM; is used by the KAT500 Utility Operate Page Memorize button. SM with a frequency was introduced in firmware version 1.20." I make manual settings far more often than using auto tune so I use the SM; function a lot when configuring for a new or modified antenna. It's a good idea to save the KAT500 configuration (save to file) quite often because it's not too difficult to mess up a perfectly good tuner configuration. E.g. my dummy load and my 160 m OCF are on the same KAT500 antenna port but switched by a separate coax switch. An accidental auto tune with the dummy load selected will wipe out a good tuning solution for the antenna. It would be nice if the user had the option to inspect the auto tuning solution before it is used to override a saved solution. Maybe that option is available but I have not found it yet. Andy, k3wyc From n6kr at elecraft.com Tue Jan 29 20:48:15 2019 From: n6kr at elecraft.com (Wayne Burdick) Date: Tue, 29 Jan 2019 17:48:15 -0800 Subject: [Elecraft] Winter Field Day report (Blazing Saddles edition) Message-ID: <50691DF9-5264-4A04-A4E2-85D07A29ABD3@elecraft.com> The "winter" weather in California over the weekend was embarrassingly mild. Even balmy. It'll likely go down as the hottest January on record, as last year's did, and the one before that, etc., making this hardly the place to mount a credible WFD effort. Worse, a heavy slate of honey-dos reduced my on-air time to just a couple of hours. So I band-hopped and logged a dozen or so QSOs on SSB and CW. It was a bit like summer Field Day squeezed into less spectral real-estate. Surely some of you have more exciting reports.... Polar Vortex, plague, locusts? Grog that wouldn't thaw? Tongue stuck to icy telescoping whip? 73, Wayne N6KR From wk6i.jeff at gmail.com Tue Jan 29 22:05:56 2019 From: wk6i.jeff at gmail.com (Jeff Stai) Date: Tue, 29 Jan 2019 19:05:56 -0800 Subject: [Elecraft] Winter Field Day report (Blazing Saddles edition) In-Reply-To: <50691DF9-5264-4A04-A4E2-85D07A29ABD3@elecraft.com> References: <50691DF9-5264-4A04-A4E2-85D07A29ABD3@elecraft.com> Message-ID: Hey Wayne - I thought you might be sharing a chili n beans recipe with that subject line! If you ever need more of a WFD challenge, the Sierra Nevada is here for you. :D 73 jeff wk6i On Tue, Jan 29, 2019 at 5:49 PM Wayne Burdick wrote: > The "winter" weather in California over the weekend was embarrassingly > mild. Even balmy. It'll likely go down as the hottest January on record, as > last year's did, and the one before that, etc., making this hardly the > place to mount a credible WFD effort. Worse, a heavy slate of honey-dos > reduced my on-air time to just a couple of hours. So I band-hopped and > logged a dozen or so QSOs on SSB and CW. It was a bit like summer Field Day > squeezed into less spectral real-estate. > > Surely some of you have more exciting reports.... Polar Vortex, plague, > locusts? Grog that wouldn't thaw? Tongue stuck to icy telescoping whip? > > 73, > Wayne > N6KR > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wk6i.jeff at gmail.com > -- Jeff Stai ~ WK6I ~ wk6i.jeff at gmail.com Ask me about Green Keys Night - Jan 1, 2019 0000-2359 UTC! RTTY op at W7RN Twisted Oak Winery ~ http://www.twistedoak.com/ From bill at w2blc.net Wed Jan 30 08:42:22 2019 From: bill at w2blc.net (bill) Date: Wed, 30 Jan 2019 08:42:22 -0500 Subject: [Elecraft] Feeler: TS-590S trade for K3/100 In-Reply-To: References: Message-ID: <41ba24e8-fcc5-43d8-a57a-2be7a7f9d7b8@w2blc.net> Don't need the 590, but I am going to be selling mine when I can get to the barn to get the boxes. It is fairly simple. Will come with a P3 and the add-ons for 2 antennas and for using VGA. Kpod (VFO) and Genovation also. On a day when I feel good and get a weather break I'll get the boxes and set a price. Bill W2BLC From k9yeq at live.com Wed Jan 30 10:38:17 2019 From: k9yeq at live.com (Bill Johnson) Date: Wed, 30 Jan 2019 15:38:17 +0000 Subject: [Elecraft] Winter Field Day report (Blazing Saddles edition) In-Reply-To: References: <50691DF9-5264-4A04-A4E2-85D07A29ABD3@elecraft.com>, Message-ID: You took all our heat sub zero with bad wind chill and a load of snow. More typical wi term in north WI. 73, Bill K9YEQ ________________________________ From: elecraft-bounces at mailman.qth.net on behalf of Jeff Stai Sent: Tuesday, January 29, 2019 9:05:56 PM To: Wayne Burdick Cc: Elecraft Reflector; KX3 at yahoogroups.com Subject: Re: [Elecraft] Winter Field Day report (Blazing Saddles edition) Hey Wayne - I thought you might be sharing a chili n beans recipe with that subject line! If you ever need more of a WFD challenge, the Sierra Nevada is here for you. :D 73 jeff wk6i On Tue, Jan 29, 2019 at 5:49 PM Wayne Burdick wrote: > The "winter" weather in California over the weekend was embarrassingly > mild. Even balmy. It'll likely go down as the hottest January on record, as > last year's did, and the one before that, etc., making this hardly the > place to mount a credible WFD effort. Worse, a heavy slate of honey-dos > reduced my on-air time to just a couple of hours. So I band-hopped and > logged a dozen or so QSOs on SSB and CW. It was a bit like summer Field Day > squeezed into less spectral real-estate. > > Surely some of you have more exciting reports.... Polar Vortex, plague, > locusts? Grog that wouldn't thaw? Tongue stuck to icy telescoping whip? > > 73, > Wayne > N6KR > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wk6i.jeff at gmail.com > -- Jeff Stai ~ WK6I ~ wk6i.jeff at gmail.com Ask me about Green Keys Night - Jan 1, 2019 0000-2359 UTC! RTTY op at W7RN Twisted Oak Winery ~ http://www.twistedoak.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9yeq at live.com From dl2ydp at darc.de Wed Jan 30 12:08:26 2019 From: dl2ydp at darc.de (Roger) Date: Wed, 30 Jan 2019 10:08:26 -0700 (MST) Subject: [Elecraft] FW: [Elecraft-K3] K3S Comparison table finalized (linkattached) In-Reply-To: <66642576F27B436291BC26177589B7D1@ww3s> References: <023501d4b770$96306080$c2912180$@arrl.net> <66642576F27B436291BC26177589B7D1@ww3s> Message-ID: <1548868106214-0.post@n2.nabble.com> A comparison with TS-890S would be interesting. 73, Roger DL2YDP -- Sent from: http://elecraft.365791.n2.nabble.com/ From wes_n7ws at triconet.org Wed Jan 30 15:30:01 2019 From: wes_n7ws at triconet.org (Wes) Date: Wed, 30 Jan 2019 13:30:01 -0700 Subject: [Elecraft] FW: [Elecraft-K3] K3S Comparison table finalized(linkattached) In-Reply-To: <1548868106214-0.post@n2.nabble.com> References: <023501d4b770$96306080$c2912180$@arrl.net> <66642576F27B436291BC261 77589B7D1@ww3s> <1548868106214-0.post@n2.nabble.com> Message-ID: <2b5de444-8030-33dd-df7b-ad542b5a37a5@triconet.org> I agree. On 1/30/2019 10:08 AM, Roger wrote: > A comparison with TS-890S would be interesting. > > 73, Roger DL2YDP > From donwilh at embarqmail.com Wed Jan 30 15:46:28 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 30 Jan 2019 15:46:28 -0500 Subject: [Elecraft] Best Mac to use with KX3 In-Reply-To: <5B7ED7F6-885A-4270-86BD-A54FC7ADE255@comcast.net> References: <0f78e569-e8a1-25a3-3f8c-e6d5fee5a8c5@gmail.com> <81616743-1B13-41C8-A8BB-74E836321AEE@sumaq.jp> <5B7ED7F6-885A-4270-86BD-A54FC7ADE255@comcast.net> Message-ID: Kiichiro-san, John is correct. Band boundaries are not field programmable. You may have to ship the K3 to Watsonville, CA to have the 60 meter band limited to non-transmit. There is a chance that it can be done by Elecraft's distributor in Japan, but I don't know that for certain. Send email to support at elecraft.com for assistance. If this is a K3 that you bought from another ham, I would net expect 60 meters to be disabled unless that ham is also located in Japan. That serial number indicates that it was produced before the introduction of the K3S. 73, Don W3FPR On 1/29/2019 4:18 PM, John Stengrevics wrote: > Kiichiro-san, > > Please contact Elecraft support: support at elecraft.com > > 73, > > John > WA1EAZ > >> On Jan 29, 2019, at 3:45 PM, Keith Onishi wrote: >> >> Hello, >> >> I am Kiichiro Onishi, JH3SIF, having K3 with SN 07902. >> >> I hoped my K3 had been shipped with 60m transmission disabled since my KX3 was shipped with 60m transmission disabled and your signed certification indicating the disablement. >> As you may know, hams operating in JA are not allowed to transmit on 60m and all TX/TRX MUST not be capable to transmit on the band, >> So, my K3 MUST have 60m transmission capability disabled so that I can have regal permission to operate my K3 in JA. >> Can you help me to disable the 60m transmission? >> >> 73 de JH3SIF, Kiichiro >> >>> 2019/01/28 2:08?Steve Grimaud (Gmail) >????: >>> >>> I'm trying to find a good new or used Macbook or Mac mini to begin using with my KX3. I had used a PC with ASUS Xonar U7 and/or Signalink USB. What will I need to keep, drop or use in a different way to get a Mac unit working with my KX3? I'm especially interested in digital signals. Who here knows what works best. >>> >>> 73 >>> >>> Steve w3swg >>> >>> -- >>> Steve Grimaud >>> steve.grimaud at gmail.com >>> 240-753-5380 >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to jh3sif at sumaq.jp >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to jstengrevics at comcast.net > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com > From n3eta at coastside.net Wed Jan 30 16:08:26 2019 From: n3eta at coastside.net (Ron Genovesi) Date: Wed, 30 Jan 2019 13:08:26 -0800 Subject: [Elecraft] FW: [Elecraft-K3] K3S Comparison table finalized(linkattached) In-Reply-To: <2b5de444-8030-33dd-df7b-ad542b5a37a5@triconet.org> References: <023501d4b770$96306080$c2912180$@arrl.net> <66642576F27B436291BC261 77589B7D1@ww3s> <1548868106214-0.post@n2.nabble.com> <2b5de444-8030-33dd-df7b-ad542b5a37a5@triconet.org> Message-ID: <3AAF9B8D-B9AD-4016-A72D-B3043D7C1BE2@coastside.net> Having owned both, I can assure you of one thing. You really don?t want to go there. Believe me Ron Genovesi N3ETA Sent from my iPhone > On Jan 30, 2019, at 12:30 PM, Wes wrote: > > I agree. > >> On 1/30/2019 10:08 AM, Roger wrote: >> A comparison with TS-890S would be interesting. >> >> 73, Roger DL2YDP >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to n3eta at coastside.net From wes_n7ws at triconet.org Wed Jan 30 16:22:17 2019 From: wes_n7ws at triconet.org (Wes) Date: Wed, 30 Jan 2019 14:22:17 -0700 Subject: [Elecraft] FW: [Elecraft-K3] K3S Comparison table finalized(linkattached) In-Reply-To: <3AAF9B8D-B9AD-4016-A72D-B3043D7C1BE2@coastside.net> References: <023501d4b770$96306080$c2912180$@arrl.net> <66642576F27B436291BC261 77589B7D1@ww3s> <1548868106214-0.post@n2.nabble.com> <2b5de444-8030-33dd-df7b-ad542b5a37a5@triconet.org> <3AAF9B8D-B9AD-4016-A72D-B3043D7C1BE2@coastside.net> Message-ID: <724ffbe1-fc60-e176-eff5-d814a91d4221@triconet.org> How could you possibly know that? On 1/30/2019 2:08 PM, Ron Genovesi wrote: > Having owned both, I can assure you of one thing. > You really don?t want to go there. > Believe me > > ? ? ?Ron Genovesi > ? ? ? ? ? ?N3ETA > Sent from my iPhone > > On Jan 30, 2019, at 12:30 PM, Wes > wrote: > >> I agree. >> >> On 1/30/2019 10:08 AM, Roger wrote: >>> A comparison with TS-890S would be interesting. >>> >>> 73, Roger DL2YDP >>> From ve3wdm at hotmail.com Wed Jan 30 16:27:37 2019 From: ve3wdm at hotmail.com (Mike Weir) Date: Wed, 30 Jan 2019 21:27:37 +0000 Subject: [Elecraft] Duty on warranty repairs Message-ID: Good afternoon, has any Canadian Elecrafters sent a rig to Elecraft for warranty repairs and if so when the radio was return were you charged any duty or HST taxes as it crossed over the boarder? I may be sending a rig down and was just wondering what cross boarder experience was of those who have sent a rig to Elecraft for warranty repairs? Thanks in advance Mike VE3WDM From brian.waterworth at gmail.com Wed Jan 30 16:34:52 2019 From: brian.waterworth at gmail.com (Brian Waterworth) Date: Wed, 30 Jan 2019 16:34:52 -0500 Subject: [Elecraft] Duty on warranty repairs In-Reply-To: References: Message-ID: I was not charged any duties or taxes because it was an RMA and clearly marked as such. I paid for insurance though to guard against any delivery "issues". regards, Brian VE3IBW On Wed, Jan 30, 2019 at 4:29 PM Mike Weir wrote: > Good afternoon, has any Canadian Elecrafters sent a rig to Elecraft for > warranty repairs and if so when the radio was return were you charged any > duty or HST taxes as it crossed over the boarder? I may be sending a rig > down and was just wondering what cross boarder experience was of those who > have sent a rig to Elecraft for warranty repairs? > Thanks in advance > Mike > VE3WDM > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to brian.waterworth at gmail.com > From w2xj at w2xj.net Wed Jan 30 16:47:54 2019 From: w2xj at w2xj.net (W2xj) Date: Wed, 30 Jan 2019 16:47:54 -0500 Subject: [Elecraft] Duty on warranty repairs In-Reply-To: References: Message-ID: <5CA96921-06D8-4CC2-B745-E5F732EF949C@w2xj.net> There are ways to do this but it involves all parties being on the same page and paperwork. I always found it easier to drive to the border and register equipment with Canadian customs then drive to buffalo or niagra falls and ship from ups or whomever. I then have it shipped back for counter pickup and drive back with the customs documentation previously created. I have done that many times with thousands of dollars worth of equipment. Sent from my iPhone > On Jan 30, 2019, at 16:27, Mike Weir wrote: > > Good afternoon, has any Canadian Elecrafters sent a rig to Elecraft for warranty repairs and if so when the radio was return were you charged any duty or HST taxes as it crossed over the boarder? I may be sending a rig down and was just wondering what cross boarder experience was of those who have sent a rig to Elecraft for warranty repairs? > Thanks in advance > Mike > VE3WDM > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w2xj at w2xj.net > From donwilh at embarqmail.com Wed Jan 30 16:48:16 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 30 Jan 2019 16:48:16 -0500 Subject: [Elecraft] Duty on warranty repairs In-Reply-To: References: Message-ID: Mike, I am not in Canada, but I have done warranty repairs here in the US for Canadian customers in the past. As far as I know, no duty or HST was charged to the recipient. The only time I got a report of charges was when a Canadian ham bought a K2 from a ham in the US, and that seller shipped direct to me for checkover, alignment and calibration. The buyer reported that he was asked to pay customs fees. My guess is that he should have because that was the first time the radio had entered Canada. Just my experience from this side of the border. Other Canadian hams may have something different to say. One thing I can say is that you should ship via the postal system rather than UPS or FedEX. Both those charge a "brokerage fee" which may be substantial. Elecraft will have to charge you for any brokerage fees that may be encountered. 73, Don W3FPR On 1/30/2019 4:27 PM, Mike Weir wrote: > Good afternoon, has any Canadian Elecrafters sent a rig to Elecraft for warranty repairs and if so when the radio was return were you charged any duty or HST taxes as it crossed over the boarder? I may be sending a rig down and was just wondering what cross boarder experience was of those who have sent a rig to Elecraft for warranty repairs? > Thanks in advance > Mike > VE3WDM > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com > From flesnick at tbaytel.net Wed Jan 30 16:51:32 2019 From: flesnick at tbaytel.net (Fred VE3FAL) Date: Wed, 30 Jan 2019 16:51:32 -0500 Subject: [Elecraft] Duty on warranty repairs In-Reply-To: <5CA96921-06D8-4CC2-B745-E5F732EF949C@w2xj.net> References: <5CA96921-06D8-4CC2-B745-E5F732EF949C@w2xj.net> Message-ID: <7167BFD7-F2E4-43D5-9021-8BC68B30E847@tbaytel.net> I have done the same going across the Pigeon River Border to MN. That piece of paper from Cdn side helps and I carry it at all times when transporting my gear back and forth as well. Sent from my iPhone Fred VE3FAL/CIW649 > On Jan 30, 2019, at 16:47, W2xj wrote: > > There are ways to do this but it involves all parties being on the same page and paperwork. > I always found it easier to drive to the border and register equipment with Canadian customs then drive to buffalo or niagra falls and ship from ups or whomever. I then have it shipped back for counter pickup and drive back with the customs documentation previously created. I have done that many times with thousands of dollars worth of equipment. > > Sent from my iPhone > >> On Jan 30, 2019, at 16:27, Mike Weir wrote: >> >> Good afternoon, has any Canadian Elecrafters sent a rig to Elecraft for warranty repairs and if so when the radio was return were you charged any duty or HST taxes as it crossed over the boarder? I may be sending a rig down and was just wondering what cross boarder experience was of those who have sent a rig to Elecraft for warranty repairs? >> Thanks in advance >> Mike >> VE3WDM >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to w2xj at w2xj.net >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to flesnick at tbaytel.net > From va3mw at portcredit.net Wed Jan 30 18:03:39 2019 From: va3mw at portcredit.net (Michael Walker) Date: Wed, 30 Jan 2019 18:03:39 -0500 Subject: [Elecraft] Duty on warranty repairs In-Reply-To: <7167BFD7-F2E4-43D5-9021-8BC68B30E847@tbaytel.net> References: <5CA96921-06D8-4CC2-B745-E5F732EF949C@w2xj.net> <7167BFD7-F2E4-43D5-9021-8BC68B30E847@tbaytel.net> Message-ID: What has worked for me is make sure that Elecraft tags it as: "Amateur Radio being returned from Warranty Repairs". The tricky part is if they insure it for full value. CRA sometimes sees that as a value and will charge you HST on it. Also, make sure you use USPS to reduce brokerage fees. Mike va3mw On Wed, Jan 30, 2019 at 4:52 PM Fred VE3FAL wrote: > I have done the same going across the Pigeon River Border to MN. That > piece of paper from Cdn side helps and I carry it at all times when > transporting my gear back and forth as well. > > Sent from my iPhone > Fred VE3FAL/CIW649 > > > > On Jan 30, 2019, at 16:47, W2xj wrote: > > > > There are ways to do this but it involves all parties being on the same > page and paperwork. > > I always found it easier to drive to the border and register equipment > with Canadian customs then drive to buffalo or niagra falls and ship from > ups or whomever. I then have it shipped back for counter pickup and drive > back with the customs documentation previously created. I have done that > many times with thousands of dollars worth of equipment. > > > > Sent from my iPhone > > > >> On Jan 30, 2019, at 16:27, Mike Weir wrote: > >> > >> Good afternoon, has any Canadian Elecrafters sent a rig to Elecraft for > warranty repairs and if so when the radio was return were you charged any > duty or HST taxes as it crossed over the boarder? I may be sending a rig > down and was just wondering what cross boarder experience was of those who > have sent a rig to Elecraft for warranty repairs? > >> Thanks in advance > >> Mike > >> VE3WDM > >> > >> ______________________________________________________________ > >> Elecraft mailing list > >> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >> Help: http://mailman.qth.net/mmfaq.htm > >> Post: mailto:Elecraft at mailman.qth.net > >> > >> This list hosted by: http://www.qsl.net > >> Please help support this email list: http://www.qsl.net/donate.html > >> Message delivered to w2xj at w2xj.net > >> > > > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to flesnick at tbaytel.net > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to va3mw at portcredit.net > From ko5v at earthlink.net Wed Jan 30 19:02:24 2019 From: ko5v at earthlink.net (Jim KO5V) Date: Wed, 30 Jan 2019 19:02:24 -0500 (EST) Subject: [Elecraft] K2: A couple of minor issues Message-ID: <1264941477.14593.1548892945075@wamui-abby.atl.sa.earthlink.net> Good evening, I have been enjoying my newly-built "K2 twins" over the last few weeks (K2 #7225), but so far, only on 20M and 17M - there's been no propagation on the higher bands, and I'm currently antenna-challenged on 30M and down. I measure full power out from the KPA100 with my LP-100, and the KAT100 works well into a fairly marginal antenna. I'm getting good audio reports using the MH2 mic. 1. Four times, I've seen the LCD go into the "power adjustment" screen just as I start to adjust the frequency. As I continue to turn the knob, the display goes immediately back to frequency. I'm using an after-market CNC'd aluminum knob with a "bearinged" dimple. It's the same diameter as the stock knob, but a bit heavier, and it is just rubbing the felt washer. I wondered the first time this happened if this was maybe a static discharge as I touched the knob, but I didn't feel or hear anything. The last couple of times, I thought it might be a mechanical issue due to the interference of the encoder and front-panel board(s). Any ideas? 2. I set the filters with the N-Gen and Spectrogram, using the instructions on Don's website. The filters work as I expect them to, but at times there is a loud, high-frequency hiss on SSB filters 2-4 that is rather annoying. Can I just play with the position of the signal in each pass-band to help this, or is there something else I should look at? The signal I want to hear is audible in all four filters, so I think they're set properly - I just want to improve them if I can. 3. I am using an external, amplified speaker, made for mobile use, because the K2's audio seems a bit low. Is this normal? This solution is fine with me; I just want to "hear" what other folks have experienced. Thanks in advance, 73, Jim KO5V From donwilh at embarqmail.com Wed Jan 30 19:28:07 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Wed, 30 Jan 2019 19:28:07 -0500 Subject: [Elecraft] K2: A couple of minor issues In-Reply-To: <1264941477.14593.1548892945075@wamui-abby.atl.sa.earthlink.net> References: <1264941477.14593.1548892945075@wamui-abby.atl.sa.earthlink.net> Message-ID: <01f22bc6-65ef-3ab1-c219-5b589112fae8@embarqmail.com> Jim, The K2 will sometimes display the Power or Speed when the VFO is turned. It does not happen frequently, but does show up when the MCU is busy doing "its" thing. It only comes on for an instant and only occasionally. So conclude that "it just does that" and ignore it, there is nothing wrong. As for the high frequency hiss on SSB filters FL2 to FL4, look carefully at the width of those filters using Spectrogram. Adjust the filter width of FL2 to be about 200 Hz less than FL1, FL3 200 Hz less than FL2, etc. For many K2s, the filter width displayed by the K2 is much greater than the displayed width. Set the filter widths using LSB mode - first set the low frequency end of the filter between 300 and 500 Hz. Then reference the high frequency end of FL1 (the OP1 filter). Place a Spectrogram marker 200 Hz below the high frequency end of FL1 (the frequency of the cursor is displayed in the panels at the bottom of the Spectrogram display). Adjust FL2 high frequency end to place the "corner" at the marker. Set a marker 200 Hz lower and do the same with FL3 - similar for FL4. Now, switch to USB and adjust the BFO settings to place the filter passbands properly (low frequency end between 300 and 500 Hz). That should produce good filters without as much high frequency hiss. The K2 audio amplifier is by design "wimpy" to reduce current draw for those operating portable on batteries. An amplified speaker should be able to make up for that low audio. 73, Don W3FPR On 1/30/2019 7:02 PM, Jim KO5V wrote: > Good evening, > > I have been enjoying my newly-built "K2 twins" over the last few weeks (K2 #7225), but so far, only on 20M and 17M - there's been no propagation on the higher bands, and I'm currently antenna-challenged on 30M and down. I measure full power out from the KPA100 with my LP-100, and the KAT100 works well into a fairly marginal antenna. I'm getting good audio reports using the MH2 mic. > > 1. Four times, I've seen the LCD go into the "power adjustment" screen just as I start to adjust the frequency. As I continue to turn the knob, the display goes immediately back to frequency. I'm using an after-market CNC'd aluminum knob with a "bearinged" dimple. It's the same diameter as the stock knob, but a bit heavier, and it is just rubbing the felt washer. I wondered the first time this happened if this was maybe a static discharge as I touched the knob, but I didn't feel or hear anything. The last couple of times, I thought it might be a mechanical issue due to the interference of the encoder and front-panel board(s). Any ideas? > > 2. I set the filters with the N-Gen and Spectrogram, using the instructions on Don's website. The filters work as I expect them to, but at times there is a loud, high-frequency hiss on SSB filters 2-4 that is rather annoying. Can I just play with the position of the signal in each pass-band to help this, or is there something else I should look at? The signal I want to hear is audible in all four filters, so I think they're set properly - I just want to improve them if I can. > > 3. I am using an external, amplified speaker, made for mobile use, because the K2's audio seems a bit low. Is this normal? This solution is fine with me; I just want to "hear" what other folks have experienced. > > Thanks in advance, > > 73, Jim KO5V > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com > From k2asp at kanafi.org Wed Jan 30 20:32:47 2019 From: k2asp at kanafi.org (Phil Kane) Date: Wed, 30 Jan 2019 17:32:47 -0800 Subject: [Elecraft] K2: A couple of minor issues In-Reply-To: <01f22bc6-65ef-3ab1-c219-5b589112fae8@embarqmail.com> References: <1264941477.14593.1548892945075@wamui-abby.atl.sa.earthlink.net> <01f22bc6-65ef-3ab1-c219-5b589112fae8@embarqmail.com> Message-ID: On 1/30/2019 4:28 PM, Don Wilhelm wrote: >> I am using an external, amplified speaker, made for mobile use, >> because the K2's audio seems a bit low. > The K2 audio amplifier is by design "wimpy" to reduce current draw > for those operating portable on batteries. An amplified speaker > should be able to make up for that low audio. I have no problem with the K2 audio volume sitting arm's length away. Most of the time the AUDIO gain pot is at the 10-o-clock position. YMMV. 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 >From a Clearing in the Silicon Forest Beaverton (Washington County) Oregon From ko5v at earthlink.net Wed Jan 30 20:34:23 2019 From: ko5v at earthlink.net (Jim KO5V) Date: Wed, 30 Jan 2019 18:34:23 -0700 (GMT-07:00) Subject: [Elecraft] K2: A couple of minor issues Message-ID: <371098560.10441.1548898464036@wamui-mouse.atl.sa.earthlink.net> Thanks again Don. I'm perfectly happy to accept that the MCU "just does that". Thanks for additional the info on the filters. I'll try what you suggest, and report back. The amplified speaker is a fine solution for me. I figured the K2's audio amp wasn't designed to be powerful - I just wanted to hear someone say it. 73, Jim KO5V -----Original Message----- >From: Don Wilhelm >Sent: Jan 30, 2019 5:28 PM >To: Jim KO5V , Elecraft List >Subject: Re: [Elecraft] K2: A couple of minor issues > >Jim, > >The K2 will sometimes display the Power or Speed when the VFO is turned. > It does not happen frequently, but does show up when the MCU is busy >doing "its" thing. It only comes on for an instant and only >occasionally. So conclude that "it just does that" and ignore it, there >is nothing wrong. > >As for the high frequency hiss on SSB filters FL2 to FL4, look carefully >at the width of those filters using Spectrogram. Adjust the filter >width of FL2 to be about 200 Hz less than FL1, FL3 200 Hz less than FL2, >etc. > >For many K2s, the filter width displayed by the K2 is much greater than >the displayed width. > >Set the filter widths using LSB mode - first set the low frequency end >of the filter between 300 and 500 Hz. Then reference the high frequency >end of FL1 (the OP1 filter). Place a Spectrogram marker 200 Hz below >the high frequency end of FL1 (the frequency of the cursor is displayed >in the panels at the bottom of the Spectrogram display). Adjust FL2 >high frequency end to place the "corner" at the marker. Set a marker >200 Hz lower and do the same with FL3 - similar for FL4. > >Now, switch to USB and adjust the BFO settings to place the filter >passbands properly (low frequency end between 300 and 500 Hz). > >That should produce good filters without as much high frequency hiss. > >The K2 audio amplifier is by design "wimpy" to reduce current draw for >those operating portable on batteries. An amplified speaker should be >able to make up for that low audio. > >73, >Don W3FPR > > > >On 1/30/2019 7:02 PM, Jim KO5V wrote: >> Good evening, >> >> I have been enjoying my newly-built "K2 twins" over the last few weeks (K2 #7225), but so far, only on 20M and 17M - there's been no propagation on the higher bands, and I'm currently antenna-challenged on 30M and down. I measure full power out from the KPA100 with my LP-100, and the KAT100 works well into a fairly marginal antenna. I'm getting good audio reports using the MH2 mic. >> >> 1. Four times, I've seen the LCD go into the "power adjustment" screen just as I start to adjust the frequency. As I continue to turn the knob, the display goes immediately back to frequency. I'm using an after-market CNC'd aluminum knob with a "bearinged" dimple. It's the same diameter as the stock knob, but a bit heavier, and it is just rubbing the felt washer. I wondered the first time this happened if this was maybe a static discharge as I touched the knob, but I didn't feel or hear anything. The last couple of times, I thought it might be a mechanical issue due to the interference of the encoder and front-panel board(s). Any ideas? >> >> 2. I set the filters with the N-Gen and Spectrogram, using the instructions on Don's website. The filters work as I expect them to, but at times there is a loud, high-frequency hiss on SSB filters 2-4 that is rather annoying. Can I just play with the position of the signal in each pass-band to help this, or is there something else I should look at? The signal I want to hear is audible in all four filters, so I think they're set properly - I just want to improve them if I can. >> >> 3. I am using an external, amplified speaker, made for mobile use, because the K2's audio seems a bit low. Is this normal? This solution is fine with me; I just want to "hear" what other folks have experienced. >> >> Thanks in advance, >> >> 73, Jim KO5V >> >> >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donwilh at embarqmail.com >> From ko5v at earthlink.net Wed Jan 30 20:56:43 2019 From: ko5v at earthlink.net (Jim KO5V) Date: Wed, 30 Jan 2019 18:56:43 -0700 (GMT-07:00) Subject: [Elecraft] K2: A couple of minor issues Message-ID: <1032614416.10727.1548899803677@wamui-mouse.atl.sa.earthlink.net> Thanks Phil. Maybe I'm just a bit deaf (but I don't think the rig is!). Usually, if the other guy isn't 59+, I have to have the AF Gain pot at between 2 and 3 o-clock. With the amplified speaker, the setting is similar to yours. The rig is on a flat table top, in the middle of a room and away from a wall, so maybe that's part of the problem too. 73, Jim KO5V "I have no problem with the K2 audio volume sitting arm's length away. Most of the time the AUDIO gain pot is at the 10-o-clock position. YMMV. 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 >From a Clearing in the Silicon Forest Beaverton (Washington County) Oregon" From ve3wdm at hotmail.com Thu Jan 31 07:12:38 2019 From: ve3wdm at hotmail.com (VE3WDM) Date: Thu, 31 Jan 2019 05:12:38 -0700 (MST) Subject: [Elecraft] Duty on warranty repairs In-Reply-To: References: <5CA96921-06D8-4CC2-B745-E5F732EF949C@w2xj.net> <7167BFD7-F2E4-43D5-9021-8BC68B30E847@tbaytel.net> Message-ID: <1548936758003-0.post@n2.nabble.com> Gentlemen thanks very much for all your input very much appreciated. 73, Mike VE3WDM -- Sent from: http://elecraft.365791.n2.nabble.com/ From tomg3olb at gmail.com Thu Jan 31 08:39:51 2019 From: tomg3olb at gmail.com (Tom Boucher) Date: Thu, 31 Jan 2019 13:39:51 +0000 Subject: [Elecraft] 160 unusual conditions. Message-ID: Just a note to those that may be interested: For the last two days, signals from ZL3IX at Eu sunrise have been peaking S9. This morning Greg was a good 579 running just 20 watts, before he turned his amp on. 73, Tom G3OLB From k4to.dave at gmail.com Thu Jan 31 08:46:09 2019 From: k4to.dave at gmail.com (Dave Sublette) Date: Thu, 31 Jan 2019 08:46:09 -0500 Subject: [Elecraft] 160 unusual conditions. In-Reply-To: References: Message-ID: Aren't ZL and G just about the antipodal points from each other? Dave, K4TO On Thu, Jan 31, 2019 at 8:40 AM Tom Boucher wrote: > Just a note to those that may be interested: > For the last two days, signals from ZL3IX at Eu sunrise have been peaking > S9. This morning Greg was a good 579 running just 20 watts, before he > turned his amp on. > > 73, > Tom > G3OLB > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k4to at arrl.net > From n8sbe at arrl.net Thu Jan 31 10:50:40 2019 From: n8sbe at arrl.net (Dave New, N8SBE) Date: Thu, 31 Jan 2019 08:50:40 -0700 Subject: [Elecraft] Elecraft scores a "clean sweep" in the Sprints article in February QST Message-ID: <20190131085040.1fa1e31b6b6b329ecc65be958babcc1f.2f842cd176.wbe@email09.godaddy.com> From n8sbe at arrl.net Thu Jan 31 10:51:22 2019 From: n8sbe at arrl.net (Dave New, N8SBE) Date: Thu, 31 Jan 2019 08:51:22 -0700 Subject: [Elecraft] Elecraft scores a "clean sweep" in the Sprints article in February QST Message-ID: <20190131085122.1fa1e31b6b6b329ecc65be958babcc1f.eacf759b08.wbe@email09.godaddy.com> Fellow Elecrafters, Elecraft scored a "clean sweep" in the shack pictures that accompanied the Sprints article on pp. 75-77 of the 2019 February QST. All four pictures depict Elecraft gear in action, including a really nice SO2R operation and even a K3/0 remote setup. Check it out! 73, -- Dave, N8SBE From richard at lamont.me.uk Thu Jan 31 11:37:20 2019 From: richard at lamont.me.uk (Richard Lamont) Date: Thu, 31 Jan 2019 16:37:20 +0000 Subject: [Elecraft] 160 unusual conditions. In-Reply-To: References: Message-ID: <2df0a914-d15b-eb94-50d3-2b1c244be79f@lamont.me.uk> Yes, Heard ZL4AS yesterday using FT8 between 0815 and 0825. Heard him again this morning between 0812 and 0836. Worked him at 0818, just after he'd given another G station +17! Path length 19069 km. He gave me +02, I gave him -12, but he was competing with a passing train powered by an iced-up 25kV catenary 100m away from my Rx loop ... 73, Richard G4DYA On 31/01/2019 13:46, Dave Sublette wrote: > Aren't ZL and G just about the antipodal points from each other? > > Dave, K4TO > > On Thu, Jan 31, 2019 at 8:40 AM Tom Boucher wrote: > >> Just a note to those that may be interested: >> For the last two days, signals from ZL3IX at Eu sunrise have been peaking >> S9. This morning Greg was a good 579 running just 20 watts, before he >> turned his amp on. >> >> 73, >> Tom >> G3OLB From glcazzola at alice.it Thu Jan 31 15:26:45 2019 From: glcazzola at alice.it (IK4EWX) Date: Thu, 31 Jan 2019 13:26:45 -0700 (MST) Subject: [Elecraft] KX2 modification Message-ID: <1548966405498-0.post@n2.nabble.com> I own KX2 serial number 749. I see that on higher serieal numbers KX2 Elecraft have introduced a modifications for reducing spurious on tx (and improve thermal dissipations it seem to me). What do you think about it? Is itreally a good think to pay for the modification or can I make without it? Many thanks. Ian IK4EWX -- Sent from: http://elecraft.365791.n2.nabble.com/ From donwilh at embarqmail.com Thu Jan 31 15:53:14 2019 From: donwilh at embarqmail.com (Don Wilhelm) Date: Thu, 31 Jan 2019 15:53:14 -0500 Subject: [Elecraft] KX2 modification In-Reply-To: <1548966405498-0.post@n2.nabble.com> References: <1548966405498-0.post@n2.nabble.com> Message-ID: <89f04040-a74d-cc1d-725d-c6e27654ecc4@embarqmail.com> Ian, Since your KX2 is less than SN 866, I would recommend that you install it. See https://ftp.elecraft.com/KX2/Mod%20Notes%20Alerts/E740304%20Inst,%20mod%20kit%20KX2,%20harm%20supp,%20rev%20B.pdf. Anyone who orders a replacement or aftermarket end panel (no matter the serial number) should also install this change. 73, Don W3FPR On 1/31/2019 3:26 PM, IK4EWX wrote: > I own KX2 serial number 749. I see that on higher serieal numbers KX2 > Elecraft have introduced a modifications for reducing spurious on tx (and > improve thermal dissipations it seem to me). What do you think about it? Is > itreally a good think to pay for the modification or can I make without it? > Many thanks. > Ian IK4EWX > > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donwilh at embarqmail.com > From WB4SON at gmail.com Thu Jan 31 18:15:44 2019 From: WB4SON at gmail.com (Bob) Date: Thu, 31 Jan 2019 18:15:44 -0500 Subject: [Elecraft] K3s & P3 used with Data Message-ID: I've been using my K3 & K3s for years using the DATA mode. It has worked as if it were in the USB mode, and shows on the P3 scope to the right of the dial frequency just like a USB signal would. Today I tried 60 meters for the first time. I could pick up signals and decode them just fine in USB mode, and the P3 showed the signals to the right of the dial frequency as expected. However, when I shifted the radio into DATA mode, the P3 seemed to shift as if it was showing a double sideband signal (half below the suppressed carrier and half above). At this point, when in DATA mode, nothing would decode until I selected REV DATA. The result of that was that calculated frequencies were wrong (appearing that signals were significantly outside the US channel limit. Am I missing some setting, or is there something unique about how the DATA mode works on 60 meters? 73, Bob, WB4SON From rmcgraw at blomand.net Thu Jan 31 18:19:37 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Thu, 31 Jan 2019 17:19:37 -0600 Subject: [Elecraft] K3s & P3 used with Data In-Reply-To: References: Message-ID: That is normal to comply with the 60M frequency and BW allowed. 73 Bob, K4TAX Sent from my iPhone > On Jan 31, 2019, at 5:15 PM, Bob wrote: > > I've been using my K3 & K3s for years using the DATA mode. It has worked > as if it were in the USB mode, and shows on the P3 scope to the right of > the dial frequency just like a USB signal would. > > Today I tried 60 meters for the first time. I could pick up signals and > decode them just fine in USB mode, and the P3 showed the signals to the > right of the dial frequency as expected. However, when I shifted the radio > into DATA mode, the P3 seemed to shift as if it was showing a double > sideband signal (half below the suppressed carrier and half above). At > this point, when in DATA mode, nothing would decode until I selected REV > DATA. The result of that was that calculated frequencies were wrong > (appearing that signals were significantly outside the US channel limit. > > Am I missing some setting, or is there something unique about how the DATA > mode works on 60 meters? > > 73, Bob, WB4SON > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcgraw at blomand.net > From WB4SON at gmail.com Thu Jan 31 18:29:06 2019 From: WB4SON at gmail.com (Bob) Date: Thu, 31 Jan 2019 18:29:06 -0500 Subject: [Elecraft] K3s & P3 used with Data In-Reply-To: References: Message-ID: Interesting... Guess I am having trouble wrapping my mind around it. The bandwidth of the channel is supposed to be 2.4 KHz. But the implication on the P3 scope is that it is an AM signal -- 1.2 KHz below the carrier and 1.2 KHz above the carrier. That's not enough bandwidth for a SSB signal. Maybe the scope is centered so that it is 2.4 KHz above the carrier and 2.4 KHz below. That might make sense (although it would imply a 4.8 KHz wide AM/DSB signal). No matter what the scope says, I don't understand why it has to be put into DATA REV in order to decode signals obviously sent as USB. Glad to know something isn't broken, but I don't understand the DATA REV bit. 73, Bob On Thu, Jan 31, 2019 at 6:20 PM Bob McGraw K4TAX wrote: > That is normal to comply with the 60M frequency and BW allowed. > > 73 > Bob, K4TAX > > > Sent from my iPhone > > > On Jan 31, 2019, at 5:15 PM, Bob wrote: > > > > I've been using my K3 & K3s for years using the DATA mode. It has worked > > as if it were in the USB mode, and shows on the P3 scope to the right of > > the dial frequency just like a USB signal would. > > > > Today I tried 60 meters for the first time. I could pick up signals and > > decode them just fine in USB mode, and the P3 showed the signals to the > > right of the dial frequency as expected. However, when I shifted the > radio > > into DATA mode, the P3 seemed to shift as if it was showing a double > > sideband signal (half below the suppressed carrier and half above). At > > this point, when in DATA mode, nothing would decode until I selected REV > > DATA. The result of that was that calculated frequencies were wrong > > (appearing that signals were significantly outside the US channel limit. > > > > Am I missing some setting, or is there something unique about how the > DATA > > mode works on 60 meters? > > > > 73, Bob, WB4SON > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft at mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to rmcgraw at blomand.net > > > > From jim at audiosystemsgroup.com Thu Jan 31 18:55:21 2019 From: jim at audiosystemsgroup.com (Jim Brown) Date: Thu, 31 Jan 2019 15:55:21 -0800 Subject: [Elecraft] K3s & P3 used with Data In-Reply-To: References: Message-ID: <435dbba4-d4f6-119f-c3d1-782b213c5a0e@audiosystemsgroup.com> It does NOT, and DATA A (USB) MUST be used, NOT in REV mode. Among other things, WSJT modes won't decode if the signal is reversed.? Detailed instructions from ARRL for data modes on 60M are at the link below.? FT8 operation should do the same as described for PSK31 -- set the TX frequency for 1500Hz. http://www.arrl.org/60m-channel-allocation I don't work 60M, but it's my understanding that frequency allocations on this band vary from one country to another, so it may be necessary to work split. 73, Jim K9YC On 1/31/2019 3:29 PM, Bob wrote: > No matter what the scope says, I don't understand why it has to be put into > DATA REV in order to decode signals obviously sent as USB. From elanzl at sbcglobal.net Thu Jan 31 20:32:52 2019 From: elanzl at sbcglobal.net (Eric Lanzl) Date: Fri, 1 Feb 2019 01:32:52 +0000 (UTC) Subject: [Elecraft] SSB Net 1-31-2019 References: <1295416057.1280836.1548984772406.ref@mail.yahoo.com> Message-ID: <1295416057.1280836.1548984772406@mail.yahoo.com> Elecraft SSB Net 1-27-2019 WB9JNZ ??????? Eric????? IL???????? K3??????? 4017??? Net control NS7P????????????? Phil????? OR????? K3??????? 1826??? Relaystation W7QHD????????? Kurt ??? AZ?????? K2/100 1538?? WA5DSS??????? Bill?????? TX?????? KX3???? 3476 KG1ACL???????? Steve?? NM????? KX3???? 10673? QRP 5 Watts W1NGA????????? AL??????? CO????? K3??????? 5765 KE5SO??????????? Joe????? CO????? K3??????? 1503 K4GCJ??????????????????????? Gerry?? NC?????? K3??????? 1597 N2TNQ?????????? Len ???? NJ?????? K3??????? 5270 AD1G????????????? Dick???? MA????? KX3???? 10591 KX6F?????????????? John??? TN?????? K3??????? 7028 N6JW/P????????? John ?? CA????? KX3???? 515??? Bicycle mobile W7REK ????????? Glenn? AZ????? K3??????? 2843??? K8NU/P?????????? Carl???? OH????? FT 2000?????????? Remotein Washington State K7JG?????????????? John??? WA????? KX3???? 3519 K7SEN??????????? Neil????? AZ?????? K3??????? 6331 KI7MAV????????? Ray???? VT?????? Yaesu 450 D KC6ZKT????????? Steven CA?????? IC 7300 KPA 500 3134 KI6DL????????????? Dennis ? ID ???? Kenwood TS 440 VE6NC??????????? David?? ? Alb???? ICOM 7100 K7BRR??????????? Bill?????? AZ?????? K3S???? 10939 N9SRA??????????? Steve?? IL???????? IC 7600 ?0BEU??????????? Steve?? AZ?????? 7048??? missed the prefix From rmcgraw at blomand.net Thu Jan 31 20:36:54 2019 From: rmcgraw at blomand.net (Bob McGraw K4TAX) Date: Thu, 31 Jan 2019 19:36:54 -0600 Subject: [Elecraft] K3s & P3 used with Data In-Reply-To: <435dbba4-d4f6-119f-c3d1-782b213c5a0e@audiosystemsgroup.com> References: <435dbba4-d4f6-119f-c3d1-782b213c5a0e@audiosystemsgroup.com> Message-ID: <00c59237-2dbc-d404-9f17-c93b289d4ce8@blomand.net> Yes and as Jim wrote, band allocations vary from one country to another.? For this reason the 60M frequencies are not included in the standard FREQUENCY Table in WSJT-X.?? Therefore, one must manually enter the frequencies in the Frequency table.? Just right click anywhere in the table and a second menu will appear.? Select INSERT and enter the frequency in empty box and say OK.?? It will then appear in the Band/frequency selection on the operating pane of WSJT-X. 73 Bob, K4TAX On 1/31/2019 5:55 PM, Jim Brown wrote: > I don't work 60M, but it's my understanding that frequency allocations > on this band vary from one country to another, so it may be necessary > to work split. > > 73, Jim K9YC From nr4c at widomaker.com Thu Jan 31 21:16:36 2019 From: nr4c at widomaker.com (Nr4c) Date: Thu, 31 Jan 2019 21:16:36 -0500 Subject: [Elecraft] K3s & P3 used with Data In-Reply-To: References: Message-ID: <7BA523C3-F0CA-42E8-B114-A5391D0935BE@widomaker.com> Which DATA sub-mode were you using. There are two USB and two LSB sub-modes. Sent from my iPhone ...nr4c. bill > On Jan 31, 2019, at 6:15 PM, Bob wrote: > > I've been using my K3 & K3s for years using the DATA mode. It has worked > as if it were in the USB mode, and shows on the P3 scope to the right of > the dial frequency just like a USB signal would. > > Today I tried 60 meters for the first time. I could pick up signals and > decode them just fine in USB mode, and the P3 showed the signals to the > right of the dial frequency as expected. However, when I shifted the radio > into DATA mode, the P3 seemed to shift as if it was showing a double > sideband signal (half below the suppressed carrier and half above). At > this point, when in DATA mode, nothing would decode until I selected REV > DATA. The result of that was that calculated frequencies were wrong > (appearing that signals were significantly outside the US channel limit. > > Am I missing some setting, or is there something unique about how the DATA > mode works on 60 meters? > > 73, Bob, WB4SON > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to nr4c at widomaker.com