[Elecraft] TL922

Wed Mar 29 18:05:45 EDT 2023

I did the softkey mod in a contest expedition recently and it worked just fine. 
some physical difficulty mounting the board without adequate hardware

I THINK the 100 volts is minus and the K3 will NOT key a negative voltage - ANY 
negative voltage.  My old XBand transverter had a minus 24 volt relay key line, 
and the K3 will not key it, it just comes on solid with the protection diode 
conducting.

Robin WA6CDR

----- Original Message ----- 
From: <elecraft-request at mailman.qth.net>
To: <elecraft at mailman.qth.net>
Sent: Wednesday, March 29, 2023 05:25
Subject: Elecraft Digest, Vol 227, Issue 8
>
> Message: 20
> Date: Wed, 29 Mar 2023 09:02:32 +0200
> From: Josep Torres <ea6bf at aol.com>
> To: Elecraft Reflector <elecraft at mailman.qth.net>
> Subject: [Elecraft] TL-922
> Message-ID: <92622F2E-C040-405A-8628-475677661D54 at aol.com>
> Content-Type: text/plain; charset=utf-8
>
> Hi guys,
>
> Have a couple of Kenwood TL-922?s around and was thinking to connect one to a 
> K3.
> Has anybody done so.? And if so, how have you done the wiring.?
> Got 2 K3?s (in fact I have 3 of ?em, but one not physically at now now) and 
> maybe one day I can use the spare one with a TL-922 from another QTH.
>
> Thanks,
>
>
> 73,
>
> Josep
> EA6BF
> BUG #256  -  CWops #3072  -  FOC #2182 (ex 1724)
>
>
>
>
>
> ------------------------------
>
> Message: 21
> Date: Wed, 29 Mar 2023 01:04:38 -0700
> From: Jim Brown <jim at audiosystemsgroup.com>
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] TL-922
> Message-ID:
> <4b3a3ac2-7d6f-258b-c061-46657a574115 at audiosystemsgroup.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> On 3/29/2023 12:02 AM, Josep Torres via Elecraft wrote:
>> Have a couple of Kenwood TL-922?s around and was thinking to connect one to a 
>> K3.
>
> Hi Josep,
>
> I don't know that amp, but I've got K3s that I've used with both
> Elecraft and non-Elecraft amps -- three different Ten Tec models, an
> ACOM, and an Expert. In all cases, it was a matter of figuring out what
> pin on what connector puts the amp in TX mode, and using the Power
> setting on the K3 to set drive level. For all of those amps, a simple
> through cable from the K3 Key Out jack to the amp Key In worked. In
> general, the manuals for both K3 and the amps are our friend.
>
> You've got a great station -- I'm near San Francisco, and we've worked
> on CW on 160, 80, and 10! Not an easy path.
>
> 73, Jim K9YC
>
>
>
>
> ------------------------------
>
> Message: 22
> Date: Wed, 29 Mar 2023 05:35:37 -0400
> From: Ken Winterling <wa2lbi at gmail.com>
> To: jim at audiosystemsgroup.com
> Cc: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] TL-922
> Message-ID:
> <CALK4bwgyrg=Oh9C9h4GzBuPwQ9EyaBXZo8G0nEsTxnWTxHuR3Q at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> Be careful with the TL-922. An unmodified TL-922 has about 100VDC on the
> keying line. I'm not familiar with the K3 so I don't know if its keying
> circuit can handle that voltage/current.
>
> I would check the K3 manual for its keying circuit specifications and also
> measure the TL-922 keying line voltage. You may need a keying line buffer
> (small relay or solid state high voltage transistor) between the K3 and the
> amp.
>
> *Ken*
> *WA2LBI*
>
>
>
>
> On Wed, Mar 29, 2023 at 4:05?AM Jim Brown <jim at audiosystemsgroup.com> wrote:
>
>> On 3/29/2023 12:02 AM, Josep Torres via Elecraft wrote:
>> > Have a couple of Kenwood TL-922?s around and was thinking to connect one
>> to a K3.
>>
>> Hi Josep,
>>
>> I don't know that amp, but I've got K3s that I've used with both
>> Elecraft and non-Elecraft amps -- three different Ten Tec models, an
>> ACOM, and an Expert. In all cases, it was a matter of figuring out what
>> pin on what connector puts the amp in TX mode, and using the Power
>> setting on the K3 to set drive level. For all of those amps, a simple
>> through cable from the K3 Key Out jack to the amp Key In worked. In
>> general, the manuals for both K3 and the amps are our friend.
>>
>> You've got a great station -- I'm near San Francisco, and we've worked
>> on CW on 160, 80, and 10! Not an easy path.
>>
>> 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
>>
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>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to wa2lbi at gmail.com
>
>
> ------------------------------
>
> Message: 23
> Date: Wed, 29 Mar 2023 07:03:33 -0400
> From: Paul Dluehosh <radio.n4pd at gmail.com>
> To: Josep Torres <ea6bf at aol.com>
> Cc: Elecraft Reflector <elecraft at mailman.qth.net>
> Subject: Re: [Elecraft] TL-922
> Message-ID: <2373cfb6-ef2c-bf28-c8f2-fa129b72e8ad at gmail.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> Josep,
>
> Maybe this product can help you safely connect your K3 keying to a
> Kenwood TL-922:
>
> https://harbachelectronics.com/shop/kenwood-tl-922/sk-922-soft-key-keying-interface/
>
> I have recently added it to a TL-922 which was being keyed by a K3.
>
> 73,
> Paul -- N4PD
>
> On 29-Mar-23 03:02, Josep Torres via Elecraft wrote:
>> Hi guys,
>>
>> Have a couple of Kenwood TL-922?s around and was thinking to connect one to a 
>> K3.
>> Has anybody done so.? And if so, how have you done the wiring.?
>> Got 2 K3?s (in fact I have 3 of ?em, but one not physically at now now) and 
>> maybe one day I can use the spare one with a TL-922 from another QTH.
>>
>> Thanks,
>>
>>
>> 73,
>>
>> Josep
>> EA6BF
>> BUG #256  -  CWops #3072  -  FOC #2182 (ex 1724)
>>
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to radio.n4pd at gmail.com
>
>
>
> ------------------------------
>
> Message: 24
> Date: Wed, 29 Mar 2023 07:55:11 -0400
> From: "James F. Boehner, MD" <jboehner01 at yahoo.com>
> To: "'Josep Torres'" <ea6bf at aol.com>, "'Elecraft Reflector'"
> <elecraft at mailman.qth.net>
> Subject: Re: [Elecraft] TL-922
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset="UTF-8"
>
> Josep,
>
> Be sure to install a soft-key interface in the TL-922 before hooking it up to 
> the K3.
>
> https://harbachelectronics.com/shop/kenwood-tl-922/sk-922-soft-key-keying-interface/
>
> The newer rigs were not meant to handle the voltages on the older amplifier's 
> keying circuits.
>
> I modified mine with the soft-key board and added the new capacitor block.
>
> '73 de JIM N2ZZ
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On 
> Behalf Of Josep Torres via Elecraft
> Sent: Wednesday, March 29, 2023 3:03 AM
> To: Elecraft Reflector <elecraft at mailman.qth.net>
> Subject: [Elecraft] TL-922
>
> Hi guys,
>
> Have a couple of Kenwood TL-922?s around and was thinking to connect one to a 
> K3.
> Has anybody done so.? And if so, how have you done the wiring.?
> Got 2 K3?s (in fact I have 3 of ?em, but one not physically at now now) and 
> maybe one day I can use the spare one with a TL-922 from another QTH.
>
> Thanks,
>
>
> 73,
>
> Josep
> EA6BF
> BUG #256  -  CWops #3072  -  FOC #2182 (ex 1724)
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html Message 
> delivered to jboehner01 at yahoo.com
>
>
>
> ------------------------------
>
> Message: 25
> Date: Wed, 29 Mar 2023 12:25:46 +0000
> From: Mark Musick <markmusick at outlook.com>
> To: "James F. Boehner, MD" <jboehner01 at yahoo.com>, 'Josep Torres'
> <ea6bf at aol.com>, 'Elecraft Reflector' <elecraft at mailman.qth.net>
> Subject: Re: [Elecraft] TL-922
> Message-ID:
> <PH7PR10MB57714DF7CA7C59607278F6CCC3899 at PH7PR10MB5771.namprd10.prod.outlook.com>
>
> Content-Type: text/plain; charset="us-ascii"
>
> Per the K3 manual page 17 the K3 can key +200VDC @ 5A.
> No need to have a key line buffer if the amp keying voltage and current meet 
> those specs.
>
> 73,
> Mark, WB9CIF
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On 
> Behalf Of James F. Boehner, MD via Elecraft
> Sent: Wednesday, March 29, 2023 11:55
> To: 'Josep Torres' <ea6bf at aol.com>; 'Elecraft Reflector' 
> <elecraft at mailman.qth.net>
> Subject: Re: [Elecraft] TL-922
>
> Josep,
>
> Be sure to install a soft-key interface in the TL-922 before hooking it up to 
> the K3.
>
> https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fharbachelectronics.com%2Fshop%2Fkenwood-tl-922%2Fsk-922-soft-key-keying-interface%2F&data=05%7C01%7C%7C3477a90435fe4f56f8db08db304cb2c8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638156878191285160%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=CtTlkUMq2f5c%2B0nckmeEK0YKKnhuYA1WQzNFfEbCFbo%3D&reserved=0
>
> The newer rigs were not meant to handle the voltages on the older amplifier's 
> keying circuits.
>
> I modified mine with the soft-key board and added the new capacitor block.
>
> '73 de JIM N2ZZ
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On 
> Behalf Of Josep Torres via Elecraft
> Sent: Wednesday, March 29, 2023 3:03 AM
> To: Elecraft Reflector <elecraft at mailman.qth.net>
> Subject: [Elecraft] TL-922
>
> Hi guys,
>
> Have a couple of Kenwood TL-922's around and was thinking to connect one to a 
> K3.
> Has anybody done so.? And if so, how have you done the wiring.?
> Got 2 K3's (in fact I have 3 of 'em, but one not physically at now now) and 
> maybe one day I can use the spare one with a TL-922 from another QTH.
>
> Thanks,
>
>
> 73,
>
> Josep
> EA6BF
> BUG #256  -  CWops #3072  -  FOC #2182 (ex 1724)
>
>
>
> ______________________________________________________________
> Elecraft mailing list
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> End of Elecraft Digest, Vol 227, Issue 8
> **************************************** 