[Elecraft] XV144 Performance
Glenn McNeil
glenn.mcneil at bigpond.com
Tue Dec 12 05:49:21 EST 2006
Hello Group,
After reading some of the recent posts re the XV144 and the K2 as the IF for
a 144 Mhz System, I have for the last two years used exactly such a
setup...with exceptional results, and after several A/B Tests on the same
antenna system, I am satisfied that the K2 and the XV144 combination cannot
be beaten with existing off the shelf "commercial" equipment.
A big claim ? I don't think so, and after trying a host of radios from Yaesu
and Icom, the Elecraft System has proven to be superior from my point of
view...which is based on completed QSO's in the logbook and several wins in
the Ross Hull VHF/UHF Contest that is held in these parts ( VK ).
I have read the post by the German group re the K2 and the XV144...and I
agree with Don....I can't quite see what they were trying to prove, or
disprove.
My most recent tests involved an IC910 and the Elecraft setup...the Elecraft
gear is simply superior in performance. Your options for VHF/UHF gear
are...TS2000, IC910 or the FT897...in these parts anyway. After having tried
the FT897 and the IC910 ( three of them ) I would never bother with them
again. The FT897 was simply terrible.
So that's my opinion...until something comes along...and it will...that is
better, you cannot beat the XV144 for $$$ value and performance.
>From a one eyed, Elecraft nut.
73
Glenn
VK4TZL
-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net]On Behalf Of
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Sent: 12 December 2006 07:02
To: elecraft at mailman.qth.net
Subject: Elecraft Digest, Vol 32, Issue 14
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Today's Topics:
1. XV144 state of the art or ... Test of the Large Signal
Behaviour of some 144 MHz Radios? (Samir Popaja)
2. Re: XV144 state of the art or ... Test of the Large Signal
Behaviour of some 144 MHz Radios? (pa5mw at home.nl)
3. RE: XV144 state of the art or ... Test of the Large
SignalBehaviour of some 144 MHz Radios? (Don Wilhelm)
4. backlight installation (Terry Wilkinson)
5. My K2 In The ARRL 10 Meter Contest (Mark Saunders, KJ7BS)
6. Re: Elecraft CW Net - signal reports (Albers)
7. SV: [Elecraft] XV144 state of the art or ... Test of the
Large SignalBehaviour of some 144 MHz Radios? (Samir Popaja)
8. Old post about contests from 2004 (Tom Althoff)
9. XV144 state (Luc Favre)
10. K2 #5628 is alive (Joseph Szczubelek)
11. Re: XV144 state of the art or ... Test of the Large
SignalBehaviour of some 144 MHz Radios? (Mark)
12. QRN-less Wireless Router?+QRN From Linksys & MFJ Devices (Jeff)
13. Re: QRN-less Wireless Router?+QRN From Linksys & MFJ Devices
(Graham Haddock)
14. K2/100 and KAT100 (DAN ABBOTT)
15. K2 relay sockets (Tom Zeltwanger)
16. Re: QRN-less Wireless Router?+QRN From Linksys & MFJ Devices
(Vic K2VCO)
17. Re: KPA800 & KPA1500 pictures (w2bvh at comcast.net)
18. RE: K2 relay sockets (Don Wilhelm)
19. Re: Old post about contests from 2004 (vze3v8dt at verizon.net)
20. Remoting the T1: enclosures? (David Ek)
21. ARRL 10 (J F)
22. Re: Remoting the T1: enclosures? (Jack Smith)
23. K2 FS (Brent Sutphin)
24. Re: Old post about contests from 2004 (Tom Althoff)
25. Re: Old post about contests from 2004 (Tom Althoff)
26. RF Generator 8657B (Eduardo Jacob)
27. PRICE REDUCED: F.S. K1/4 (Joseph Trombino Jr)
28. The airwaves will be huming! (Larry Makoski W2LJ)
29. K2 problems (wsm at amaonline.com)
30. Re: re [Elecraft] Interface problem... (Phil Kane)
31. RE: K2 problems (Don Wilhelm)
32. RE: re [Elecraft] Interface problem... (Don Wilhelm)
33. Unstable VCO (Dave & Jeanne Robertson)
34. Problem with VCO Stability (Roy Morris)
35. RE: K2 problems (Stan Rife)
36. K2 rf board capicator C75 (wsm at amaonline.com)
37. RE: K2 rf board capicator C75 (Don Wilhelm)
38. K2 rf board capicator C75 (Gary Hvizdak)
39. W1 wattmeter in Eham.net (Siu Johnny)
----------------------------------------------------------------------
Message: 1
Date: Mon, 11 Dec 2006 13:22:39 +0100
From: "Samir Popaja" <Samir.Popaja at impact-europe.se>
Subject: [Elecraft] XV144 state of the art or ... Test of the Large
Signal Behaviour of some 144 MHz Radios?
To: <elecraft at mailman.qth.net>
Message-ID:
<39FC4A54461B6C439E9F906282BACB412CBDAD at mail1.impact-europe.se>
Content-Type: text/plain; charset="iso-8859-1"
Hello,
Taken from, the http://www.df9ic.de/tech/trxtest/trxtest.html
"The Elecraft K2 also has a low IF design using conventional VCOs which
should result in a good LO noise supression but does not. You may compare
the ARRL test results of the LO noise that Elecraft publishes on their own
website and which is closely within our blocking test result (our
measured -95 dB RX blocking in 20 kHz offset is equivalent to -129 dBc/Hz LO
noise). The high level of TX noise shows that there seem to be design flaws
choosing too low signal levels internally. The AGC threshold is ridiculously
high (subjective impression). I also do not understand why it uses low
quality ladder crystal filters instead of a filter from monolithic duals
like any other radio does. Overall it was the worst HF radio in the test
(OK, a 144 MHz IC910H is still worse...)."
Is the K2 + XV144 really bad combo or the others transverters are much
better?
73' SM7VZX
------------------------------
Message: 2
Date: Mon, 11 Dec 2006 14:05:03 +0100
From: <pa5mw at home.nl>
Subject: Re: [Elecraft] XV144 state of the art or ... Test of the
Large Signal Behaviour of some 144 MHz Radios?
To: Samir Popaja <Samir.Popaja at impact-europe.se>
Cc: elecraft at mailman.qth.net
Message-ID: <6448289.1165842303867.JavaMail.root at webmail2.tilbu1>
Content-Type: text/plain; charset=utf-8
Hello Samir & All,
I'm also puzzled about their test results. But I'm sure it is very difficult
to compare apples with apples in such an environment. I'm afraid that some
setups (HF+transverter or 144Mhz trnscvr) simply have not been used to
their full RX potential. And what is measured on the bench can be totally
different on the air.
It is very difficult to perform such a comparison in terms of objectivity.
What is their goal? Showing static RX specifications based upon a sigle
test setup?
NO, their first goal was to determine the **amount of TX noise** being
produced by a few choosen combo's or transceivers. Only to show that many
should be avoided during contesting for TX.
The measured specs found for RX do NOT determine whether you hear or do not
hear the DX or make the contact in contest (different situations again).
I have performed numerous MDS tests, using a Marconi signal generator. After
some years now I'm more focussing on real-life situations.
My experiences are that the K2 performs exceptional in this case.
I strongly suggest you all do the same. Forget about the numbers go listen
on the band while comparing brand A to brand B.
Do you hear the dx yes/no ??
And even better: can you complete the contact yes/no ??
In the end that is what matters in practise.
Have fun.
73 Mark , PA5MW
---- Samir Popaja <Samir.Popaja at impact-europe.se> schrijft:
> Hello,
>
> Taken from, the http://www.df9ic.de/tech/trxtest/trxtest.html
>
> "The Elecraft K2 also has a low IF design using conventional VCOs which
should result in a good LO noise supression but does not. You may compare
the ARRL test results of the LO noise that Elecraft publishes on their own
website and which is closely within our blocking test result (our
measured -95 dB RX blocking in 20 kHz offset is equivalent to -129 dBc/Hz LO
noise). The high level of TX noise shows that there seem to be design flaws
choosing too low signal levels internally. The AGC threshold is ridiculously
high (subjective impression). I also do not understand why it uses low
quality ladder crystal filters instead of a filter from monolithic duals
like any other radio does. Overall it was the worst HF radio in the test
(OK, a 144 MHz IC910H is still worse...)."
>
> Is the K2 + XV144 really bad combo or the others transverters are much
better?
>
> 73' SM7VZX
> _______________________________________________
> Elecraft mailing list
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> Elecraft web page: http://www.elecraft.com
------------------------------
Message: 3
Date: Mon, 11 Dec 2006 08:34:28 -0500
From: "Don Wilhelm" <w3fpr at earthlink.net>
Subject: RE: [Elecraft] XV144 state of the art or ... Test of the
Large SignalBehaviour of some 144 MHz Radios?
To: "Samir Popaja" <Samir.Popaja at impact-europe.se>,
<elecraft at mailman.qth.net>
Message-ID: <NGEDLJLDCGJIHEGPMIJPMEPEFNAA.w3fpr at earthlink.net>
Content-Type: text/plain; charset="iso-8859-1"
If I read it correctly, this 'test report' and comments were for the K2
operated without the transverter, but all the data presented was for testing
with a transverter.
I am not certain of this individual's intent, but it would appear to me that
he was determined to present the K2 in a bad light.
For one, I do not understand why he chose only to operate the K2 with the
preamp ON when used with a transverter - the transverter should provide all
the front-end gain needed, and turning the pre-amp on should accomplish
nothing for weak signal detection, but certainly does reduce the IF receiver
dynamic range (and thus effects his 'blocking test'). In addition, he used
2 borrowed K2s, and we have no information about the health of these K2s,
they may not have been operating properly. Remember that the K2 is not an
'off the shelf' transceiver, and setup and alignment is done by the
individual builder rather than on a factory assembly line. Many K2s are
operating at top performance, but many are not. Alignment and calibration
are not difficult, but we have no assurance that it was done correctly for
the K2s used.
All in all, this report does not square with others which do document the
test setup and conditions used along with unbiased results. I refer you to
the ARRL lab test which do document their entire setup and test methodology.
Since the results in this 'report' are quite different than from other
reports, I believe he either had malfunctioning K2s to work with or intended
to skew the report.
73,
Don W3FPR
> -----Original Message-----
> Hello,
>
> Taken from, the http://www.df9ic.de/tech/trxtest/trxtest.html
>
> "The Elecraft K2 also has a low IF design using conventional VCOs
> which should result in a good LO noise supression but does not.
> You may compare the ARRL test results of the LO noise that
> Elecraft publishes on their own website and which is closely
> within our blocking test result (our measured -95 dB RX blocking
> in 20 kHz offset is equivalent to -129 dBc/Hz LO noise). The high
> level of TX noise shows that there seem to be design flaws
> choosing too low signal levels internally. The AGC threshold is
> ridiculously high (subjective impression). I also do not
> understand why it uses low quality ladder crystal filters instead
> of a filter from monolithic duals like any other radio does.
> Overall it was the worst HF radio in the test (OK, a 144 MHz
> IC910H is still worse...)."
>
> Is the K2 + XV144 really bad combo or the others transverters are
> much better?
>
> 73' SM7VZX
>
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.432 / Virus Database: 268.15.15/581 - Release Date: 12/9/2006
3:41 PM
------------------------------
Message: 4
Date: Mon, 11 Dec 2006 07:12:29 -0700
From: "Terry Wilkinson" <w1bpj at rebeltec.net>
Subject: [Elecraft] backlight installation
To: elecraft at mailman.qth.net
Message-ID: <457D04DD.32054.4688EE3 at w1bpj.rebeltec.net>
Content-Type: text/plain; charset=US-ASCII
Just completed the K-1 backlight mod; nice addition. I had built the K-1
with silver solder, so approached the mod job with fear and trepidation,
based on comments on this list. Some of the LCD holes cleared OK using
desoldering braid; others refused to clear. Tried a solder sucker without
success. Finally, I heated the stubborn holes while gingerly inserting a
stainless pin, then carefully removed the pin (solder doesn't stick to
stainless pins). This pushed the solder out of the hole, creating a "peak"
of
solder sticking out of that side of the hole, which was then easily removed
with braid.
Regarding the insulator card assembly, there was no "stickum" on the back
side of the card (unlike the black rubber spacer in the original
installation,
which did have "stickum"), and the directions did not mention how the card
was to adhere to the PCB, so I used some double-sided tape to fix it in
place.
In spite of the hassle, I still like silver solder!
Terry, W1BPJ
------------------------------
Message: 5
Date: Mon, 11 Dec 2006 7:25:20 -0700
From: "Mark Saunders, KJ7BS" <kj7bs at cox.net>
Subject: [Elecraft] My K2 In The ARRL 10 Meter Contest
To: Elecraft Mail List <elecraft at mailman.qth.net>
Message-ID:
<16190067.1165847121001.JavaMail.root at fed1wml03.mgt.cox.net>
Content-Type: text/plain; charset=utf-8
I had a blast working the 2006 ARRL 10 meter contest with my K2. It is my
favorite contest of the year. Unfortunately I was not able to devote the
entire weekend to working the contest so I had to get little pieces of time
where I could.
Friday evening was exciting as we had QSOs until after 0500z. Saturday was
much less active when I had operating time and Sunday I managed only 2 QSOs.
In total I had 41 QSOs for a total of 2700 points, all working CW at 5w from
my K2.
--
Mark, KJ7BS
Glendale, AZ
------------------------------
Message: 6
Date: Mon, 11 Dec 2006 09:44:24 -0500
From: "Albers" <k2hyd at earthlink.net>
Subject: [Elecraft] Re: Elecraft CW Net - signal reports
To: <Elecraft at mailman.qth.net>
Message-ID: <001b01c71d32$da2e0d90$6401a8c0 at acer2e68c49b20>
Content-Type: text/plain; charset="iso-8859-1"
Thanks for continuing to run the nets, Kevin.
On 20 last night I heard nary a peep.
I was in bed very early on account of having had some bad insomnia the night
before, but I got back out of bed at 10 EST to listen on 40. Barely, barely
heard Kevin, and didn't even hear every transmission (which is why I didn't
even try to QNI, not knowing when the windows came). The only others heard
(maybe 229) were K6PJV and K5BGB.
73
Ray K2HYD
KX-1 # 608
------------------------------
Message: 7
Date: Mon, 11 Dec 2006 16:18:33 +0100
From: "Samir Popaja" <Samir.Popaja at impact-europe.se>
Subject: SV: [Elecraft] XV144 state of the art or ... Test of the
Large SignalBehaviour of some 144 MHz Radios?
To: <w3fpr at arrl.net>
Cc: elecraft at mailman.qth.net
Message-ID:
<39FC4A54461B6C439E9F906282BACB412CBDB0 at mail1.impact-europe.se>
Content-Type: text/plain; charset="iso-8859-1"
Why I put this on the reflector?
I'm in processing to buy transverter, which I will use "to begin" with
ts-850s, then maybe with K2, which I think is "perfect" portable combo for
VHF contesting.
After reading this test I was little bit scared and want the Elecraft
community (owners of XV144) to make little positive comments on XV144.
Thank You
73' SM7VZX
-----Ursprungligt meddelande-----
Fren: Don Wilhelm [mailto:w3fpr at earthlink.net]
Skickat: den 11 december 2006 14:34
Till: Samir Popaja; elecraft at mailman.qth.net
Dmne: RE: [Elecraft] XV144 state of the art or ... Test of the Large
SignalBehaviour of some 144 MHz Radios?
If I read it correctly, this 'test report' and comments were for the K2
operated without the transverter, but all the data presented was for testing
with a transverter.
I am not certain of this individual's intent, but it would appear to me that
he was determined to present the K2 in a bad light.
For one, I do not understand why he chose only to operate the K2 with the
preamp ON when used with a transverter - the transverter should provide all
the front-end gain needed, and turning the pre-amp on should accomplish
nothing for weak signal detection, but certainly does reduce the IF receiver
dynamic range (and thus effects his 'blocking test'). In addition, he used
2 borrowed K2s, and we have no information about the health of these K2s,
they may not have been operating properly. Remember that the K2 is not an
'off the shelf' transceiver, and setup and alignment is done by the
individual builder rather than on a factory assembly line. Many K2s are
operating at top performance, but many are not. Alignment and calibration
are not difficult, but we have no assurance that it was done correctly for
the K2s used.
All in all, this report does not square with others which do document the
test setup and conditions used along with unbiased results. I refer you to
the ARRL lab test which do document their entire setup and test methodology.
Since the results in this 'report' are quite different than from other
reports, I believe he either had malfunctioning K2s to work with or intended
to skew the report.
73,
Don W3FPR
> -----Original Message-----
> Hello,
>
> Taken from, the http://www.df9ic.de/tech/trxtest/trxtest.html
>
> "The Elecraft K2 also has a low IF design using conventional VCOs
> which should result in a good LO noise supression but does not.
> You may compare the ARRL test results of the LO noise that
> Elecraft publishes on their own website and which is closely
> within our blocking test result (our measured -95 dB RX blocking
> in 20 kHz offset is equivalent to -129 dBc/Hz LO noise). The high
> level of TX noise shows that there seem to be design flaws
> choosing too low signal levels internally. The AGC threshold is
> ridiculously high (subjective impression). I also do not
> understand why it uses low quality ladder crystal filters instead
> of a filter from monolithic duals like any other radio does.
> Overall it was the worst HF radio in the test (OK, a 144 MHz
> IC910H is still worse...)."
>
> Is the K2 + XV144 really bad combo or the others transverters are
> much better?
>
> 73' SM7VZX
>
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.432 / Virus Database: 268.15.15/581 - Release Date: 12/9/2006
3:41 PM
------------------------------
Message: 8
Date: Mon, 11 Dec 2006 11:12:51 -0500
From: "Tom Althoff" <althoff at verizon.net>
Subject: [Elecraft] Old post about contests from 2004
To: <elecraft at mailman.qth.net>
Message-ID: <000e01c71d3f$35e5db70$6401a8c0 at incartx1>
Content-Type: text/plain; charset="iso-8859-1"
I just stumbled across an old posting on the Elecraft list from two years
ago where Jules-N2WN mentioned submitting entries into contests as a group
of K2 users or Elecraft Rig Users. Tom LA1PHA also expressed an interest.
Some contests require that the "club" be one where the members reside within
a certain geographical radius and perhaps require of physical meetings etc.
But other contests seem to allow you "form" the club for a specific contest.
So for the ones that don't require us to travel to Finland or TN or NY for a
meeting perhaps we can submit our scores together.
But in order to do so we need to come up with a club name.
Suggestions are solicited and anyone else interested in pooling your contest
scores with a K2 or Elecraft-based contest group are welcome to chime in.
Tom K2TA
K2/100 #1117
------------------------------
Message: 9
Date: Mon, 11 Dec 2006 17:16:25 +0100
From: "Luc Favre" <luc.favre at noos.fr>
Subject: [Elecraft] XV144 state
To: <elecraft at mailman.qth.net>
Message-ID: <000601c71d3f$b7ff5e60$c64b4151 at Commun>
Content-Type: text/plain; charset="iso-8859-1"
I just ordered the XV144 by QRP-Project in Berlin and received it today.
More on this subject later !
73
Luc/F6HJO
----- Original Message -----
From: "Samir Popaja" <Samir.Popaja at impact-europe.se>
To: <w3fpr at arrl.net>
Cc: <elecraft at mailman.qth.net>
Sent: Monday, December 11, 2006 4:18 PM
Subject: SV: [Elecraft] XV144 state of the art or ... Test of the
LargeSignalBehaviour of some 144 MHz Radios?
Why I put this on the reflector?
I'm in processing to buy transverter, which I will use "to begin" with
ts-850s, then maybe with K2, which I think is "perfect" portable combo for
VHF contesting.
After reading this test I was little bit scared and want the Elecraft
community (owners of XV144) to make little positive comments on XV144.
Thank You
73' SM7VZX
------------------------------
Message: 10
Date: Mon, 11 Dec 2006 08:20:50 -0800 (PST)
From: Joseph Szczubelek <k9dmv at yahoo.com>
Subject: [Elecraft] K2 #5628 is alive
To: elecraft at mailman.qth.net
Message-ID: <781639.88133.qm at web60118.mail.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
My K2 ser. # 5628 is alive. Over the past week I have
made several contacts on 80 meters. I have checked
into the regional 80 meter Texas Panhandle SSB net
several times using CW and received many FB reports.
On 80 meters I get 17+ watts out and on 10 meters I
get 12+ watts out. The receiver sounds good.
Will be starting the KSB2 shortly.
Best,
Joe Szczubelek - K9DMV
____________________________________________________________________________
________
Need a quick answer? Get one in minutes from people who know.
Ask your question on www.Answers.yahoo.com
------------------------------
Message: 11
Date: Mon, 11 Dec 2006 17:23:24 +0100
From: Mark <pa5mw at home.nl>
Subject: Re: [Elecraft] XV144 state of the art or ... Test of the
Large SignalBehaviour of some 144 MHz Radios?
To: w3fpr at arrl.net
Cc: elecraft at mailman.qth.net, Samir Popaja
<Samir.Popaja at impact-europe.se>
Message-ID: <457D85FC.9010801 at home.nl>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hello Don,
Some comments from my side in between your text below
Don Wilhelm wrote:
> If I read it correctly, this 'test report' and comments were for the K2
> operated without the transverter, but all the data presented was for
testing
> with a transverter.
>
> **Yes, I agree. Both my K2's perform lovely under heavy contest on the
lowbands. Have no problem with its AGC behavior.
>
> I am not certain of this individual's intent, but it would appear to me
that
> he was determined to present the K2 in a bad light.
>
> ** I think we cannot jump to that conclusion. I see no clear evidence of
that. I 'assume'there simply was ample time for them to look into details
why the test performed worse than average. I do tend to feel that some hams
tend to exagarate the performance of their 'own'(home build) equipment and
that in return others have a pre-biased negative tendency towards that. I
try to neglect both and focus on real-life performance.
>
> For one, I do not understand why he chose only to operate the K2 with the
> preamp ON when used with a transverter - the transverter should provide
all
> the front-end gain needed, and turning the pre-amp on should accomplish
> nothing for weak signal detection, but certainly does reduce the IF
receiver
> dynamic range (and thus effects his 'blocking test').
***Totally agree with you on both aspects. That at least explains the
low IP3 figures.
> In addition, he used
> 2 borrowed K2s, and we have no information about the health of these K2s,
> they may not have been operating properly. Remember that the K2 is not an
> 'off the shelf' transceiver, and setup and alignment is done by the
> individual builder rather than on a factory assembly line. Many K2s are
> operating at top performance, but many are not. Alignment and calibration
> are not difficult, but we have no assurance that it was done correctly for
> the K2s used.
>
***Yup, again agree totally. Especially the gain setting of the K2's
preamp can be altered upon your own spec. I have been succesfull on that
while matching it together with a DEM transverter.
Optimized gain setting on all stages affect both the sytem noise figure
as well as the IP3, or better said the IF overload (K2).
> All in all, this report does not square with others which do document the
> test setup and conditions used along with unbiased results. I refer you
to
> the ARRL lab test which do document their entire setup and test
methodology.
> Since the results in this 'report' are quite different than from other
> reports,
*** Although a well documented methodology it only compares apples to
apples. It does not show wether you will hear and work the dx.
We are too much focussed on things like MDS, or in the case of this
german test the system noise figure, whereas I found that it does not
validate that lower MDS offers better reception. I noticed that internal
phase noise covers the wanted dx, especially when the band is more
crowded. So I forget about the long list of MDS measurements I performed
in the last couple of years. I use real life testing as my
qualification reference. My point is; the germans never had true RX
performance in mind. They wanted to investigate the TX performance of
nowadays 144Mhz equipment and/or transverter combo's with older stuff.
Too much noisy TX signals on the bands during contests cover all weak
stations. Local phase noise seems no design issue for the manufacturers.
Next to that they added the found system noise figure and IP3 test
results. Interesting data but the first largely depends on correct
adjustment of gain matching in all stages. The second rather too. You
need more time to set things up correctly than to throw in a couple of
transverters and some HF rigs. However I do respect there try very much;
I think they made a serious point here TX-wise and failed RX-wise.
> I believe he either had malfunctioning K2s to work with or intended
> to skew the report.
>
*** I feel uncomfortable with their blunt statements too, but see only
evidence of a lack of knowledge in their whole test procedure RX-wise.
> 73,
> Don W3FPR
>
***73 Mark, PA5MW
K2; 2036 and 3323, 1x XV50
>
>> -----Original Message-----
>> Hello,
>>
>> Taken from, the http://www.df9ic.de/tech/trxtest/trxtest.html
>>
>> "The Elecraft K2 also has a low IF design using conventional VCOs
>> which should result in a good LO noise supression but does not.
>> You may compare the ARRL test results of the LO noise that
>> Elecraft publishes on their own website and which is closely
>> within our blocking test result (our measured -95 dB RX blocking
>> in 20 kHz offset is equivalent to -129 dBc/Hz LO noise). The high
>> level of TX noise shows that there seem to be design flaws
>> choosing too low signal levels internally. The AGC threshold is
>> ridiculously high (subjective impression). I also do not
>> understand why it uses low quality ladder crystal filters instead
>> of a filter from monolithic duals like any other radio does.
>> Overall it was the worst HF radio in the test (OK, a 144 MHz
>> IC910H is still worse...)."
>>
>> Is the K2 + XV144 really bad combo or the others transverters are
>> much better?
>>
>> 73' SM7VZX
>>
>>
> --
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.5.432 / Virus Database: 268.15.15/581 - Release Date: 12/9/2006
> 3:41 PM
>
> _______________________________________________
> Elecraft mailing list
> Post to: Elecraft at mailman.qth.net
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>
>
>
------------------------------
Message: 12
Date: Mon, 11 Dec 2006 11:34:34 -0500
From: Jeff <wb5gwb at optonline.net>
Subject: [Elecraft] QRN-less Wireless Router?+QRN From Linksys & MFJ
Devices
To: elecraft at mailman.qth.net
Message-ID: <008001c71d42$3da57890$4f9b2d18 at Livingroom>
Content-Type: text/plain; charset=iso-8859-1
I'm sorry to go off-topic, but is there a particular model of wireless
router that produces little or no HF noise?
Stan's, W5EWA, comments about his high noise level on HF got me started
looking for possible local contributors to my own noise level, which had
recently increased markedly. I have found two sources, thus far:
Noise source 1: My non-wireless Linksys BEFSR41 EtherFast Cable/DSL Router
with 4-port switch, which I started using a few days ago, produces very
strong broadband noise on HF. I had only one PC connected to the router, so
I don't really need the router at present, but I had heard that having a
router between the cable modem and the PC reduces the likelihood that
someone will be able to hack into the PC via the Internet. Is this true?
It did seem that my ZoneAlarm firewall reported fewer access attempts while
the router was in the loop.
Two of my family members plan to acquire laptops soon, which will force me
to install a wireless router, although it won't have to be located in my
shack. So, please let me know if there is a type of wireless router that
seems to produce less HF interference.
Noise source 2: My MFJ-4225MV switching power supply produces a very
rough-sounding heterodyne that often drifts across my operating frequency.
I noticed it on 80 meters, but it probably happens on other bands, as well.
Although switching power supplies are notorious for producing HF crud, I
would have naively assumed that any power supply designed primarily for the
ham market would be interference-free, but this is obviously not the case.
Anyway, I'm now using a Ten-Tec 937 linear supply, in place of the MFJ unit.
Please note that you may have better luck with the Linksys and MFJ units
than I've had -- I'm currently using an indoor antenna, which inevitably
maximizes pickup of crud from my various indoor devices. The interference
from the MFJ power supply was not strong, so one might not hear it at all,
if one were using a coax-fed outdoor antenna.
Oh, I do have one on-topic comment: I found that the K2's internal battery
makes searching for in-home noise sources very quick and convenient!
Anyway, I'm happy to report that my HF noise level is now reasonable, and
I'm on the air!
73 & 72,
Jeff
WB5GWB -- Soon to be replaced by a vanity call with a "2" in it, I hope!
Long Island, NY
------------------------------
Message: 13
Date: Mon, 11 Dec 2006 10:47:06 -0600
From: Graham Haddock <grahamh at austin.rr.com>
Subject: Re: [Elecraft] QRN-less Wireless Router?+QRN From Linksys &
MFJ Devices
To: Jeff <wb5gwb at optonline.net>, elecraft at mailman.qth.net
Message-ID: <457D8B8A.9030905 at austin.rr.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Based on some of the comments on this email reflector in the last week,
I went hunting for noise this weekend and discovered the worst offender
in the house was the switching "wall wart" power supply for my Linksys
wireless router. I will replace the "wall wart" with a linear regulated
supply
of the same rating, and I expect most or all of the noise to go away.
The Linksys
box puts out a few spot carrier tones or birdies, which will still be
there, but the
broadband S5 hash was coming from the "wall wart."
--- Graham / KE9H
.
Jeff wrote:
> I'm sorry to go off-topic, but is there a particular model of wireless
> router that produces little or no HF noise?
>
>
> Noise source 1: My non-wireless Linksys BEFSR41 EtherFast Cable/DSL
Router
> with 4-port switch, which I started using a few days ago, produces very
> strong broadband noise on HF. So, please let me know if there is a
> type of wireless router that seems to produce less HF interference.
>
------------------------------
Message: 14
Date: Mon, 11 Dec 2006 09:24:07 -0800
From: "DAN ABBOTT" <DWAGABBOTT at MSN.COM>
Subject: [Elecraft] K2/100 and KAT100
To: "Elecraft Reflector" <elecraft at mailman.qth.net>
Message-ID: <BAY133-DAV76C9BFB301E0C0280D8D4DED00 at phx.gbl>
Content-Type: text/plain; charset="iso-8859-1"
K2/100 Ser# 04775 & the KAT 100
Has Sold.
Dan
------------------------------
Message: 15
Date: Mon, 11 Dec 2006 11:27:16 -0600
From: Tom Zeltwanger <KG3V at ChesBayVA.com>
Subject: [Elecraft] K2 relay sockets
To: Elecraft at mailman.qth.net
Message-ID: <1165858036.457d94f4c31df at mail.opentransfer.com>
Content-Type: text/plain; charset=ISO-8859-1
I am thinking about inserting sockets under a couple of the relays on the RF
board, to make it easy to connect some probes or tie in external circuitry
later. Of course this would also make it easier to upgrade or replace them
too.
I would think using low profile sockets would not imact the
physical/electrical integrity of the board. Wonder if anybody else has done
this, or if there are any concerns about doing so.
73,
Tom KG3V
------------------------------
Message: 16
Date: Mon, 11 Dec 2006 09:39:39 -0800
From: Vic K2VCO <vic at rakefet.com>
Subject: Re: [Elecraft] QRN-less Wireless Router?+QRN From Linksys &
MFJ Devices
To: Elecraft Reflector <elecraft at mailman.qth.net>
Message-ID: <457D97DB.10508 at rakefet.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Graham Haddock wrote:
> Based on some of the comments on this email reflector in the last
> week, I went hunting for noise this weekend and discovered the worst
> offender in the house was the switching "wall wart" power supply for
> my Linksys wireless router. I will replace the "wall wart" with a
> linear regulated supply of the same rating, and I expect most or all
> of the noise to go away.
These things are a plague, and they are becoming more common every day.
New monitors, printers, networking devices like routers and modems,
high-intensity lamps, and who knows what else all come with them. I
counted four of them in our home office alone. Some have FCC labels and
some do not. A *really* bad idea whose time seems to have come!
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
------------------------------
Message: 17
Date: Mon, 11 Dec 2006 17:59:22 +0000
From: w2bvh at comcast.net
Subject: Re: [Elecraft] KPA800 & KPA1500 pictures
To: Ron Castro <ronc at sonic.net>, "Elecraft Listserve"
<elecraft at mailman.qth.net>
Cc: Ron Castro <ronc at sonic.net>
Message-ID:
<121120061759.21562.457D9C7A000D75E00000543A220730079308900DCD99 at comcast.ne
t>
Amazing that those little bitty relays can carry (and isolate) a kw+.
73,
Lenny W2BVH
-------------- Original message ----------------------
From: "Ron Castro" <ronc at sonic.net>
> I am one of many folks eagerly awaiting the first shipments of the
Elecraft
> KPA800 and KPA1500 solid state amplifiers. In October, Eric visited our
> local club, the Redwood Empire DX Assn. and brought the prototypes of the
> new amplifiers with him. I took a few pictures of the units, including
> shots of the insides of one of them, and Eric was kind enough to give me
> permission to publish the photos on my web site. If you would like to see
> them, go to www.N6IE.com .
>
> I got a chance to see the amps close-up again a few days later at
Pacificon,
> and it seemed like there was a lot of interest. When you see these units,
I
> think you'll understand why every high-end QRO operator will want one of
> these sitting on his desk!
>
> OFF TOPIC: While you're at my website, take a look at an amazing article I
> ran across that debunks the famous story of Reginald Fessenden's first AM
> radio broadcast on Christmas Eve, 1906. According to the author, there
was
> not one single published account of the historic event until more than a
> quarter century after it was supposed to have happened, leading to the
> inescapable conclusion that the whole story was a sham and that Lee
DeForest
> did the first voice broadcast in March of 1907! (Is this where I say "we
> report...you decide"?)
>
> 73, Ron N6IE
> www.N6IE.com
> (Formerly N6AHA)
>
> _______________________________________________
> Elecraft mailing list
> Post to: Elecraft at mailman.qth.net
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
------------------------------
Message: 18
Date: Mon, 11 Dec 2006 13:06:26 -0500
From: "Don Wilhelm" <w3fpr at earthlink.net>
Subject: RE: [Elecraft] K2 relay sockets
To: "Tom Zeltwanger" <KG3V at ChesBayVA.com>, <Elecraft at mailman.qth.net>
Message-ID: <NGEDLJLDCGJIHEGPMIJPMEABFOAA.w3fpr at earthlink.net>
Content-Type: text/plain; charset="iso-8859-1"
Tom,
In a word - NOT RECOMMENDED.
Sockets do not provide connections as good as soldering in place, the
sockets make the RF paths longer which may cause problems, and are another
source for failure. The RF Path lengths would be especially sensitive in
the bandpass filter area of the K2, the relays should be soldered in place.
Components do not fail often, so replacement of components is not a valid
concern in hardware that uses a conservative design (like the K2) which does
not stress the components beyond their ratings.
As for tie-in of external circuits, that can be done by soldering to IC pins
or by placing components on the bottom of the board.
Upgrades usually do not involve changing a relay or an IC - most upgrades
involve only changes to resistors, capacitors, diodes and other similar
components, and a socketed arrangement will likely not help for any of the
upgrades that may come along.
73,
Don W3FPR
> -----Original Message-----
>
> I am thinking about inserting sockets under a couple of the
> relays on the RF
> board, to make it easy to connect some probes or tie in external
> circuitry
> later. Of course this would also make it easier to upgrade or
> replace them too.
>
> I would think using low profile sockets would not imact the
> physical/electrical integrity of the board. Wonder if anybody
> else has done
> this, or if there are any concerns about doing so.
>
> 73,
>
> Tom KG3V
>
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.432 / Virus Database: 268.15.15/581 - Release Date: 12/9/2006
3:41 PM
------------------------------
Message: 19
Date: Mon, 11 Dec 2006 12:29:58 -0600 (CST)
From: <vze3v8dt at verizon.net>
Subject: Re: [Elecraft] Old post about contests from 2004
To: Tom Althoff <althoff at verizon.net>, elecraft at mailman.qth.net
Message-ID:
<532975.1804931165861798666.JavaMail.root at vms074.mailsrvcs.net>
Content-Type: text/plain; charset=ISO-8859-1
Sounds like a great idea. I've noticed that for some contests I don't have
a "valid" radio club that I can submit my scores for. If the rules allow
for a non-affiliated club and wide geographical area (and whatever other
rules may apply), I would vote for "Elecrafters" as a plain and simple name.
Mark, NK8Q
>From: Tom Althoff <althoff at verizon.net>
>Date: 2006/12/11 Mon AM 10:12:51 CST
>To: elecraft at mailman.qth.net
>Subject: [Elecraft] Old post about contests from 2004
>I just stumbled across an old posting on the Elecraft list from two years
ago where Jules-N2WN mentioned submitting entries into contests as a group
of K2 users or Elecraft Rig Users. Tom LA1PHA also expressed an interest.
>
>Some contests require that the "club" be one where the members reside
within a certain geographical radius and perhaps require of physical
meetings etc.
>
>But other contests seem to allow you "form" the club for a specific
contest.
>
>So for the ones that don't require us to travel to Finland or TN or NY for
a meeting perhaps we can submit our scores together.
>
>But in order to do so we need to come up with a club name.
>
>Suggestions are solicited and anyone else interested in pooling your
contest scores with a K2 or Elecraft-based contest group are welcome to
chime in.
>
>Tom K2TA
>K2/100 #1117
>_______________________________________________
>Elecraft mailing list
>Post to: Elecraft at mailman.qth.net
>You must be a subscriber to post to the list.
>Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
>Help: http://mailman.qth.net/subscribers.htm
>Elecraft web page: http://www.elecraft.com
------------------------------
Message: 20
Date: Mon, 11 Dec 2006 12:44:38 -0700 (GMT-07:00)
From: David Ek <david.ek at earthlink.net>
Subject: [Elecraft] Remoting the T1: enclosures?
To: elecraft at mailman.qth.net
Message-ID:
<23455573.1165866278487.JavaMail.root at elwamui-hound.atl.sa.earthlink.net>
Content-Type: text/plain; charset="UTF-8"
Gang,
I've been trying out an antenna arrangement at my QTH that uses a design
based on the IK-STIC 2:
http://hometown.aol.com/realhamradio2/W2IK-ANTENNA.html
My particular version of the IK-STIC 2 eliminates the telescoping fibergass
pole in favor of a simple wire supported at the peak of my roof. The whole
works has been placed near the side of my house, somewhat concealed from the
street and neighbors.
The antenna is fed with almost 100 ft of coax and has an Elecraft T1 tuner
and BL-1 balun at the feedpoint. I control the T1 using a switch in my shack
that's connected to the T1's jack using almost 100 ft of RG-174.
The whole arrangement seems to work FB for my purposes, and I'm working to
make the whole installation durable enough to stand up to the elements.
Have any of you remoted your T1? How have you enclosed it or otherwise
protected it from the weather? I've been looking around for a suitable
enclosure but nothing I've seen has really grabbed me thus far.
73 de Dave NK0E
------------------------------
Message: 21
Date: Mon, 11 Dec 2006 11:52:09 -0800 (PST)
From: J F <phriendly1 at yahoo.com>
Subject: [Elecraft] ARRL 10
To: althoff at verizon.net, Elecraft Discussion List
<elecraft at mailman.qth.net>
Message-ID: <467208.60116.qm at web39508.mail.mud.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
I was there Tom...
I was running the "new" K2/100 #4455.
NY was non-existent until late Sunday here in Tn, even
VE3's were in short supply. Antarctica (new continent
and DXCC for me) was loud Saturday morning and the
W6/7 pipe was good both days. Never heard EU. ZL was
very strong and a lot of folks from there played, not
a peep from VK on the other hand...
193 QSO's mostly S&P, 57 multipliers, on and off
during the daylight hours.
73,
Julius
n2wn
____________________________________________________________________________
________
Do you Yahoo!?
Everyone is raving about the all-new Yahoo! Mail beta.
http://new.mail.yahoo.com
------------------------------
Message: 22
Date: Mon, 11 Dec 2006 15:31:01 -0500
From: Jack Smith <Jack.Smith at cliftonlaboratories.com>
Subject: Re: [Elecraft] Remoting the T1: enclosures?
To: elecraft at mailman.qth.net
Message-ID: <457DC005.1030102 at cliftonlaboratories.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Hard to beat the standard NEMA boxes for outdoor use, like a NEMA 12, 13
or 14. Not cheap, but weatherproof and easy to find at your local
electrical supply house. Available in galvanized, fiberglass and
stainless steel.
I use one at the base of my Rohn 45 tower to hold the lightning arrestors.
Jack K8ZOA
www.cliftonlaboratories.com -- home of the Z90 digital panadapter
David Ek wrote:
> Gang,
>
> I've been trying out an antenna arrangement at my QTH that uses a design
based on the IK-STIC 2:
>
> http://hometown.aol.com/realhamradio2/W2IK-ANTENNA.html
>
> My particular version of the IK-STIC 2 eliminates the telescoping
fibergass pole in favor of a simple wire supported at the peak of my roof.
The whole works has been placed near the side of my house, somewhat
concealed from the street and neighbors.
>
> The antenna is fed with almost 100 ft of coax and has an Elecraft T1 tuner
and BL-1 balun at the feedpoint. I control the T1 using a switch in my shack
that's connected to the T1's jack using almost 100 ft of RG-174.
>
> The whole arrangement seems to work FB for my purposes, and I'm working to
make the whole installation durable enough to stand up to the elements.
>
> Have any of you remoted your T1? How have you enclosed it or otherwise
protected it from the weather? I've been looking around for a suitable
enclosure but nothing I've seen has really grabbed me thus far.
>
> 73 de Dave NK0E
>
> _______________________________________________
> Elecraft mailing list
> Post to: Elecraft at mailman.qth.net
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>
>
------------------------------
Message: 23
Date: Mon, 11 Dec 2006 15:37:46 -0500
From: "Brent Sutphin" <bsutphin at triad.rr.com>
Subject: [Elecraft] K2 FS
To: <elecraft at mailman.qth.net>
Message-ID: <001501c71d64$37df88c0$6401a8c0 at laptop>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I have K2, serial number 5439 for sale. I built this rig in late spring
and summer of this year. It is in new condition. I have been building kits
for
30+ years including several from Elecraft. The radio was very carefully
built
and it was aligned using Spectrogram.
It puts out full power on all bands and the receiver is outstanding. It
comes with the following options installed;
K160RX
KAF2
KNB2
KPA100
KSB2
I can supply pictures on request. If conditions permit I would be glad to
give an on the air demo.
Price for this radio is $1200 plus shipping.
------------------------------
Message: 24
Date: Mon, 11 Dec 2006 15:58:18 -0500
From: "Tom Althoff" <althoff at verizon.net>
Subject: Re: [Elecraft] Old post about contests from 2004
To: <elecraft at mailman.qth.net>
Message-ID: <006801c71d67$165b7d00$6601a8c0 at TOSHIBA>
Content-Type: text/plain; charset=iso-8859-1
I like Elecrafters too.
I don't see any club rules for the ARRL 10M contest so I've resubmitted my
log with the CLUB = Elecrafters.
Hopefully none of the folk at Elecraft will object to use using
"Elecrafters" for the club name? <Eric/Wayne? Any problem with this?>
73 de Tom K2TA
----- Original Message -----
From: <vze3v8dt at verizon.net>
To: "Tom Althoff" <althoff at verizon.net>; <elecraft at mailman.qth.net>
Sent: Monday, December 11, 2006 1:29 PM
Subject: Re: [Elecraft] Old post about contests from 2004
> Sounds like a great idea. I've noticed that for some contests I don't
have a "valid" radio club that I can submit my scores for. If the rules
allow for a non-affiliated club and wide geographical area (and whatever
other rules may apply), I would vote for "Elecrafters" as a plain and simple
name.
>
> Mark, NK8Q
>
>
> >From: Tom Althoff <althoff at verizon.net>
> >Date: 2006/12/11 Mon AM 10:12:51 CST
> >To: elecraft at mailman.qth.net
> >Subject: [Elecraft] Old post about contests from 2004
>
> >I just stumbled across an old posting on the Elecraft list from two years
ago where Jules-N2WN mentioned submitting entries into contests as a group
of K2 users or Elecraft Rig Users. Tom LA1PHA also expressed an interest.
> >
> >Some contests require that the "club" be one where the members reside
within a certain geographical radius and perhaps require of physical
meetings etc.
> >
> >But other contests seem to allow you "form" the club for a specific
contest.
> >
> >So for the ones that don't require us to travel to Finland or TN or NY
for a meeting perhaps we can submit our scores together.
> >
> >But in order to do so we need to come up with a club name.
> >
> >Suggestions are solicited and anyone else interested in pooling your
contest scores with a K2 or Elecraft-based contest group are welcome to
chime in.
> >
> >Tom K2TA
> >K2/100 #1117
> >_______________________________________________
> >Elecraft mailing list
> >Post to: Elecraft at mailman.qth.net
> >You must be a subscriber to post to the list.
> >Subscriber Info (Addr. Change, sub, unsub etc.):
> > http://mailman.qth.net/mailman/listinfo/elecraft
> >
> >Help: http://mailman.qth.net/subscribers.htm
> >Elecraft web page: http://www.elecraft.com
>
------------------------------
Message: 25
Date: Mon, 11 Dec 2006 16:02:59 -0500
From: "Tom Althoff" <althoff at verizon.net>
Subject: Re: [Elecraft] Old post about contests from 2004
To: <elecraft at mailman.qth.net>
Message-ID: <001b01c71d67$bdb32620$6601a8c0 at TOSHIBA>
Content-Type: text/plain; charset=iso-8859-1
Ok... The robot kicked back Elecrafters as an unknown club. I've submitted
a request to N1ND to ask him to add ELECRAFTERS to the list if it doesn't
violate any rules about having meetings, members living within X distance
of each other etc.
I'll let the list know what they say.
73 de Tom K2TA
----- Original Message -----
From: "Tom Althoff" <althoff at verizon.net>
To: <elecraft at mailman.qth.net>
Sent: Monday, December 11, 2006 3:58 PM
Subject: Re: [Elecraft] Old post about contests from 2004
> I like Elecrafters too.
>
> I don't see any club rules for the ARRL 10M contest so I've resubmitted my
> log with the CLUB = Elecrafters.
>
> Hopefully none of the folk at Elecraft will object to use using
> "Elecrafters" for the club name? <Eric/Wayne? Any problem with this?>
>
> 73 de Tom K2TA
>
> ----- Original Message -----
> From: <vze3v8dt at verizon.net>
> To: "Tom Althoff" <althoff at verizon.net>; <elecraft at mailman.qth.net>
> Sent: Monday, December 11, 2006 1:29 PM
> Subject: Re: [Elecraft] Old post about contests from 2004
>
>
> > Sounds like a great idea. I've noticed that for some contests I don't
> have a "valid" radio club that I can submit my scores for. If the rules
> allow for a non-affiliated club and wide geographical area (and whatever
> other rules may apply), I would vote for "Elecrafters" as a plain and
simple
> name.
> >
> > Mark, NK8Q
> >
> >
> > >From: Tom Althoff <althoff at verizon.net>
> > >Date: 2006/12/11 Mon AM 10:12:51 CST
> > >To: elecraft at mailman.qth.net
> > >Subject: [Elecraft] Old post about contests from 2004
> >
> > >I just stumbled across an old posting on the Elecraft list from two
years
> ago where Jules-N2WN mentioned submitting entries into contests as a group
> of K2 users or Elecraft Rig Users. Tom LA1PHA also expressed an interest.
> > >
> > >Some contests require that the "club" be one where the members reside
> within a certain geographical radius and perhaps require of physical
> meetings etc.
> > >
> > >But other contests seem to allow you "form" the club for a specific
> contest.
> > >
> > >So for the ones that don't require us to travel to Finland or TN or NY
> for a meeting perhaps we can submit our scores together.
> > >
> > >But in order to do so we need to come up with a club name.
> > >
> > >Suggestions are solicited and anyone else interested in pooling your
> contest scores with a K2 or Elecraft-based contest group are welcome to
> chime in.
> > >
> > >Tom K2TA
> > >K2/100 #1117
> > >_______________________________________________
> > >Elecraft mailing list
> > >Post to: Elecraft at mailman.qth.net
> > >You must be a subscriber to post to the list.
> > >Subscriber Info (Addr. Change, sub, unsub etc.):
> > > http://mailman.qth.net/mailman/listinfo/elecraft
> > >
> > >Help: http://mailman.qth.net/subscribers.htm
> > >Elecraft web page: http://www.elecraft.com
> >
>
------------------------------
Message: 26
Date: Mon, 11 Dec 2006 22:37:08 +0100
From: "Eduardo Jacob" <ej.jacob at gmail.com>
Subject: [Elecraft] RF Generator 8657B
To: elecraft at mailman.qth.net
Message-ID:
<9172b8c70612111337g3052671eh258b732e247dd211 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi
I have been given a HP8657B RF generator with option 022 (a GMSK generator).
If anybody is using one of this units, please let me know I have questions
related to it.
Regards
Eduardo/EA2BAJ
------------------------------
Message: 27
Date: Mon, 11 Dec 2006 16:37:42 -0500
From: "Joseph Trombino Jr" <w2kj at bellsouth.net>
Subject: [Elecraft] PRICE REDUCED: F.S. K1/4
To: "Elecraft" <Elecraft at mailman.qth.net>
Message-ID: <00e801c71d6c$96ec23c0$7101a8c0 at Y4M7M0>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Time to build something new so I offer for sale my K1 s/n 1902.
It is in like-new condition...perfect.....not a mark on it.
This K1 covers 40m, 30m 20m 15m with full output on all bands, has the KAT1
antenna tuner and LCD backlight installed along with a finger dimple on the
main tuning knob and manuals.
Will ship and insure to your QTH for $450.
73, Joe W2KJ
I QRP, therefore I am
------------------------------
Message: 28
Date: Mon, 11 Dec 2006 19:04:11 -0500
From: Larry Makoski W2LJ <Makos327 at worldnet.att.net>
Subject: [Elecraft] The airwaves will be huming!
To: cw_bugs at yahoogroups.com, Elecraft at mailman.qth.net, Flying Pigs
<fpqrp-l at fpqrp.com>, NJ-QRP Club <NJQRP at njqrp.org>
Message-ID: <457DF1FB.6020508 at worldnet.att.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Wow! Lots of QRP signals will be flyin' through the air tomorrow
(Tuesday) night! There will be both activity from the QRP Foxhunters as
well as the NAQCCers! I know a lot of you out there are members of both
organizations and will have fun participating in both events. But for
those of you who are not; I hope you'll take this opportunity to sample
some other fare than what you might be accustomed to!
For the Foxhunters - the NAQCC is the North American QRP CW Club; and
each month they hold a two hour Sprint. The Sprint tomorrow night will
start a half hour before the hunt and will end when the hunt ends. The
exchange is simple - RST, S/P/C, and NAQCC #. If you're not an NAQCCer,
please give your power instead (followed by the W, of course)! The
contest call they use; and that you will hear is "CQ NA". Since all
NAQCC Sprints are open to everyone, membership in the NAQCC is not
necessary. For details on the rules, please check out:
http://www.arm-tek.net/~yoel/sprint200612.html
For the NAQCCers - tomorrow night is the 80 Meter QRP Foxhunt. Two
QRPers act as Foxes and will be on a frequency somewhere between 3.550
and 3.570 MHz. Your mission, should you decide to accept it, is to grab
the Fox "pelt". That is, you must have a successfully find the Fox; and
then complete two-way QSO with the him. The QSO is an exchange exchange
is RST, S/P/C, name and power out. A word of warning! Foxes are sly
creatures that usually work split; so even when you find one, odds are
you will have to use your wiles to figure out where the Foxes are
listening if you want to grab their pelt! If you want to hone your QRP
DX operating skills, this is the way to do it! For a complete summary
of the rules, please visit:
http://www.qrpfoxhunt.org/winter_rules.htm
80 Meters just might get a tad crowded tomorrow night; but with the band
assignment changing as of Friday, this is a good thing. So get on the
air tomorrow night and have some fun, be courteous, try something new
(maybe) and let's show the FCC that CW is indeed NOT DEAD!
73 de Larry W2LJ
--
Larry W2LJ
QRP - When you care to send the very least!
http://www.w2lj.qrpradio.com
http://w2lj.blogspot.com/
------------------------------
Message: 29
Date: Mon, 11 Dec 2006 18:25:39 -0600
From: wsm at amaonline.com
Subject: [Elecraft] K2 problems
To: elecraft at mailman.qth.net
Message-ID: <380-220061221202539458 at amaonline.com>
Content-Type: text/plain; charset=iso-8859-1
Hi
Well I have K2 #5846 with all components in the enclosure, but it's
not doing what I hoped for.
Have been trying to align it and this is what I am getting.
80 meters no receive or output.
40 meters 20 watts out and no receive.
30 meters 10 watts out and very weak receive.
20 meters 1 watt out and no receive.
17 meters no output and no receive.
15 meters no output or receive.
12 meters no output or receive.
10 meters no output or receive.
The output measured with a heathkit meter, which is very close to
being accurate, but not calabrated.
On the first power up before begining alignment I had a very weak
recieive on 15 meters.
The signal source for tuning it is another transceiver with output
set to 5 watts.
At one time I had a good receive signal on 40 meters but lost it in
tuning the other frequencies.
I think the problem is in the receiver, but don't know where to
start looking. Have checked for cold solder joints several times.
Anyone have any ideas?
Thanks
Scott N5SM
------------------------------
Message: 30
Date: Mon, 11 Dec 2006 16:37:01 -0800
From: "Phil Kane" <k2asp at kanafi.org>
Subject: Re: re [Elecraft] Interface problem...
To: "elecraft at mailman.qth.net" <elecraft at mailman.qth.net>
Message-ID:
<200612120037.kBC0bRlQ024125 at omr1.networksolutionsemail.com>
Content-Type: text/plain; charset="us-ascii"
On Sun, 10 Dec 2006 23:38:35 -0800 (PST), Bernard Gaffney, N8PVZ/QRP wrote:
>Hi, Steve,
> ummm...I hope all 9 pins aren't connected, as per
>the KIO2 manual, some of them can cause damage to PC
>or Rig. See pages 12 & 13 of the KIO2 manual.
Steve...
You need TWO cables.
The "special" 3-wire cable goes from a computer serial port to
the K2 I/O port. This permits control of the rig via a
program such as Ham Radio Deluxe or equivlaent where you
specify the serial port that it is connected to.
A "regular" 9-wire serial cable goes from a DIFFERENT computer
serial port to the Rigblaster, which permits the program to
control the K2's PTT circuitry. This is the serial port that
you specify in the setup of the data program such as MixW or
Digipan.
The audio cables between the K2, the Rigblaster, and the
computer's sound card enable the program to exchange audio
between the program and the K2 for digital modes.
That's how I run my K2/100 and Rigblaster Plus.
--
73 de K2ASP - Phil Kane
Elecraft K2/100 s/n 5402
------------------------------
Message: 31
Date: Mon, 11 Dec 2006 19:59:04 -0500
From: "Don Wilhelm" <w3fpr at earthlink.net>
Subject: RE: [Elecraft] K2 problems
To: <wsm at amaonline.com>, <elecraft at mailman.qth.net>
Message-ID: <NGEDLJLDCGJIHEGPMIJPKEALFOAA.w3fpr at earthlink.net>
Content-Type: text/plain; charset="iso-8859-1"
Scott,
Go back to the Receive Bandpass filter alignment in the manual.
Do not attempt transmit until you have peaked the bandpass filters on
receive. If any do not peak, stop and resolve that problem before moving
forward. If all bands do not show a proper peak, then you have a problem in
the mixer or IF or audio stages somewhere.
You may have to resort to the Receiver Signal Tracing steps in the
Troubleshooting section of the manual.
After the receiver is working properly, then you may move on to the transmit
tests.
The most likely is that you will find your problem either in the soldering
or in a misplaced component.
73,
Don W3FPR
> -----Original Message-----
>
> Well I have K2 #5846 with all components in the enclosure, but it's
> not doing what I hoped for.
>
> Have been trying to align it and this is what I am getting.
> 80 meters no receive or output.
> 40 meters 20 watts out and no receive.
> 30 meters 10 watts out and very weak receive.
> 20 meters 1 watt out and no receive.
> 17 meters no output and no receive.
> 15 meters no output or receive.
> 12 meters no output or receive.
> 10 meters no output or receive.
>
> The output measured with a heathkit meter, which is very close to
> being accurate, but not calabrated.
> On the first power up before begining alignment I had a very weak
> recieive on 15 meters.
> The signal source for tuning it is another transceiver with output
> set to 5 watts.
> At one time I had a good receive signal on 40 meters but lost it in
> tuning the other frequencies.
> I think the problem is in the receiver, but don't know where to
> start looking. Have checked for cold solder joints several times.
> Anyone have any ideas?
> Thanks
> Scott N5SM
>
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.432 / Virus Database: 268.15.15/581 - Release Date: 12/9/2006
3:41 PM
------------------------------
Message: 32
Date: Mon, 11 Dec 2006 20:00:40 -0500
From: "Don Wilhelm" <w3fpr at earthlink.net>
Subject: RE: re [Elecraft] Interface problem...
To: "Phil Kane" <k2asp at kanafi.org>, <elecraft at mailman.qth.net>
Message-ID: <NGEDLJLDCGJIHEGPMIJPMEALFOAA.w3fpr at earthlink.net>
Content-Type: text/plain; charset="windows-1250"
Phil and all,
HRD does allow for the same serial port to be used for both PTT keying (with
its integrated PSK31) and transceiver control, but the hardware
implementation of the interface box may negate Simon's best efforts to make
that possible.
73,
Don W3FPR
> -----Original Message-----
> >Hi, Steve,
>
> > ummm...I hope all 9 pins aren't connected, as per
> >the KIO2 manual, some of them can cause damage to PC
> >or Rig. See pages 12 & 13 of the KIO2 manual.
>
> Steve...
> You need TWO cables.
>
> The "special" 3-wire cable goes from a computer serial port to
> the K2 I/O port. This permits control of the rig via a
> program such as Ham Radio Deluxe or equivlaent where you
> specify the serial port that it is connected to.
>
> A "regular" 9-wire serial cable goes from a DIFFERENT computer
> serial port to the Rigblaster, which permits the program to
> control the K2's PTT circuitry. This is the serial port that
> you specify in the setup of the data program such as MixW or
> Digipan.
>
> The audio cables between the K2, the Rigblaster, and the
> computer's sound card enable the program to exchange audio
> between the program and the K2 for digital modes.
>
> That's how I run my K2/100 and Rigblaster Plus.
> --
> 73 de K2ASP - Phil Kane
> Elecraft K2/100 s/n 5402
>
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.432 / Virus Database: 268.15.15/581 - Release Date: 12/9/2006
3:41 PM
------------------------------
Message: 33
Date: Mon, 11 Dec 2006 20:12:18 -0500
From: "Dave & Jeanne Robertson" <darjar at comcast.net>
Subject: [Elecraft] Unstable VCO
To: "Elecraft" <elecraft at mailman.qth.net>
Message-ID: <000501c71d8a$91690620$0200a8c0 at pentium4dual>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
With stock construction (with C91, .001uf, C88, 68pf and RC15, 100uh choke
installed) I found instablity in the VCO from about 7175 to 7860 KHZ.
After contacting Elecraft I was told to remove RC15 and replace it with a
wire and shorten the leads of C88. The VCO instablity was still there.
After being advised to keep the leads short I cut any excess leads from all
the IC's that are in the VCO circuit. (Please note that all chips are
soldered in except the controller chip U1). this didn't help at all.
So I tried replacing the wire short where RFC 15 was, with a ferrite bead.
Now the instablity was only from 7800 to 7805 KHZ.
The next thing I tried was replacing C88 with a 100pf silver mica capacitor.
It is somewhar larger then the origonal capacitir but I managed to keep the
leads short. The VCO problem is now gone and the rig seems to work
flawlessly. I have been using it a lot on PSK and even had some ssb
contacts. I still got a lot to learn about the rig and the DSB module but
that will come with experiance. Thanks to all for your advice and
information.
Again, thanks to all,
73
Dave KD1NA
------------------------------
Message: 34
Date: Mon, 11 Dec 2006 20:31:06 -0500
From: "Roy Morris" <w4wfb at carolina.rr.com>
Subject: [Elecraft] Problem with VCO Stability
To: <elecraft at mailman.qth.net>
Message-ID: <002f01c71d8d$31b8fe30$0202a8c0 at Roy>
Content-Type: text/plain; charset="iso-8859-1"
I remember when I built my K2 I experienced the WAOF problem on 40 meters.
Gary Surrency at Elecraft suggested that I switch capacitors C70 and C71
with each other. Make sure the leads are as close to the board as possible.
I made these changes and my WAOF problem no longer existed. Roy Morris
W4WFB
------------------------------
Message: 35
Date: Mon, 11 Dec 2006 20:06:52 -0600
From: "Stan Rife" <srife at swbell.net>
Subject: RE: [Elecraft] K2 problems
To: <elecraft at mailman.qth.net>
Message-ID: <000801c71d92$3168c910$0300a8c0 at stanslaptop>
Content-Type: text/plain; charset="us-ascii"
What were your results when completeing each stage of the build?
Were the alignment requirements met at each one of those stages? If they
were, then you should at least have a good receive on each band. I don't
know what would have changed so drastically that you now have no receive at
all...not to mention the transmitter.
I would probably start at the beginning and do each stage of the
realignment again, and if you come to an alignment step that does not meet
expectations, start your trouble shooting at that point.
Stan Rife
W5EWA
Houston, TX
> -----Original Message-----
>
> Well I have K2 #5846 with all components in the enclosure, but it's
> not doing what I hoped for.
>
> Have been trying to align it and this is what I am getting. 80 meters
> no receive or output. 40 meters 20 watts out and no receive.
> 30 meters 10 watts out and very weak receive.
> 20 meters 1 watt out and no receive.
> 17 meters no output and no receive.
> 15 meters no output or receive.
> 12 meters no output or receive.
> 10 meters no output or receive.
>
> The output measured with a heathkit meter, which is very close to
> being accurate, but not calabrated. On the first power up before
> begining alignment I had a very weak recieive on 15 meters.
> The signal source for tuning it is another transceiver with output
> set to 5 watts.
> At one time I had a good receive signal on 40 meters but lost it in
> tuning the other frequencies.
> I think the problem is in the receiver, but don't know where to
> start looking. Have checked for cold solder joints several times.
> Anyone have any ideas?
> Thanks
> Scott N5SM
>
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.432 / Virus Database: 268.15.15/581 - Release Date: 12/9/2006
3:41 PM
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Subscriber Info (Addr. Change, sub, unsub etc.):
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------------------------------
Message: 36
Date: Mon, 11 Dec 2006 21:47:48 -0600
From: wsm at amaonline.com
Subject: [Elecraft] K2 rf board capicator C75
To: elecraft at mailman.qth.net
Message-ID: <380-220061221234748380 at amaonline.com>
Content-Type: text/plain; charset=iso-8859-1
Hi
Can someone with a K2 tell me the kind and value of capacitor
C75 on the RF board.
All it says about it in my manual is that it is supplied with the
K160RX package, but there are three capicators in that package
they are of two different values.
Thanks
Scott N5SM
------------------------------
Message: 37
Date: Mon, 11 Dec 2006 23:01:11 -0500
From: "Don Wilhelm" <w3fpr at earthlink.net>
Subject: RE: [Elecraft] K2 rf board capicator C75
To: <wsm at amaonline.com>, <elecraft at mailman.qth.net>
Message-ID: <NGEDLJLDCGJIHEGPMIJPOEAPFOAA.w3fpr at earthlink.net>
Content-Type: text/plain; charset="iso-8859-1"
Scott,
The information to sort out which is which can be found in the K160RX
manual.
73,
Don W3FPR
> -----Original Message-----
>
> Can someone with a K2 tell me the kind and value of capacitor
> C75 on the RF board.
> All it says about it in my manual is that it is supplied with the
> K160RX package, but there are three capicators in that package
> they are of two different values.
> Thanks
> Scott N5SM
>
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.432 / Virus Database: 268.15.15/581 - Release Date: 12/9/2006
3:41 PM
------------------------------
Message: 38
Date: Mon, 11 Dec 2006 23:15:39 -0500
From: "Gary Hvizdak" <garyhvizdak at cfl.rr.com>
Subject: [Elecraft] K2 rf board capicator C75
To: <wsm at amaonline.com>
Cc: elecraft at mailman.qth.net
Message-ID:
<!&!AAAAAAAAAAAYAAAAAAAAAMoSn6jtQcpLqYpo6eql/HnCgAAAEAAAAKk7xyGpsrBElW1vX12
[email protected]>
Content-Type: text/plain; charset="us-ascii"
Scott (N5SM) wrote ...
Can someone with a K2 tell me the kind and value of capacitor
C75 on the RF board.
Hi Scott,
RF-C75 is, a 470 pF NPO cap, designation "471".
73,
Gary
KI4GGX
------------------------------
Message: 39
Date: Tue, 12 Dec 2006 15:20:29 +0800
From: "Siu Johnny" <jcpsiu at hotmail.com>
Subject: [Elecraft] W1 wattmeter in Eham.net
To: elecraft at mailman.qth.net
Message-ID: <BAY112-F20B009E2309A2A371534A1D9D70 at phx.gbl>
Content-Type: text/plain; charset=gb2312; format=flowed
Hi Group,
I have just set up the review page for W1 in the www.eham.net Please feel
free to add your comments
<http://www.eham.net/reviews/detail/6353#54052>
73
Johnny Siu VR2XMC
_________________________________________________________________
SkJ@=g8w5X5DEsSQ=xPP=;Aw#,Cb7QOBTX Live Messenger;
http://get.live.com/messenger/overview
------------------------------
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