Re: [Elecraft] TL922

2023-03-29 Thread jerry

On 2023-03-29 15:05, Robin wrote:


I THINK the 100 volts is minus


The relay keying voltage is generally negative on tube linears.  It does
double duty - runs the relays, and biases the tubes off during receive.

  - Jerry, KF6VB
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Re: [Elecraft] TL922

2023-03-29 Thread Robin
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: 

To: 
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 
To: Elecraft Reflector 
Subject: [Elecraft] TL-922
Message-ID: <92622f2e-c040-405a-8628-475677661...@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 
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] TL-922
Message-ID:
<4b3a3ac2-7d6f-258b-c061-46657a574...@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 
To: j...@audiosystemsgroup.com
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] TL-922
Message-ID:

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  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


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--

Message: 23
Date: Wed, 29 Mar 2023 07:03:33 -0400
From: Paul Dluehosh 
To: Josep Torres 
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] TL-922
Message-ID: <2373cfb6-ef2c-bf28-c8f2-fa129b72e...@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

Re: [Elecraft] TL-922

2023-03-29 Thread Dr. William J. Schmidt
Yes, the K3 can only handle key out of +200 VDC at 5A...


Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ 
VP2EHZ

Moderator: North American QRO Group at Groups.IO.
Moderator: Amateur Radio Builders Group at Groups.IO.

email:  b...@wjschmidt.com


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of James F. Boehner, MD via Elecraft
Sent: Wednesday, March 29, 2023 6:55 AM
To: 'Josep Torres' ; 'Elecraft Reflector' 

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://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-boun...@mailman.qth.net  On 
Behalf Of Josep Torres via Elecraft
Sent: Wednesday, March 29, 2023 3:03 AM
To: Elecraft Reflector 
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)



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Re: [Elecraft] TL-922

2023-03-29 Thread Joe Subich, W4TV



The TL-922 does not have snubber diodes across it 100V relays.
The back EMF spike will kill the KeyOut circuit in the K3.

*ALWAYS* use a key line buffer with a TL-922 that has not
been fitted with a soft key circuit.

73,

   ... Joe, W4TV

On 3/29/2023 8:25 AM, Mark Musick wrote:

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-boun...@mailman.qth.net  On 
Behalf Of James F. Boehner, MD via Elecraft
Sent: Wednesday, March 29, 2023 11:55
To: 'Josep Torres' ; 'Elecraft Reflector' 

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%7C84df9e7fe9f640afb435%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-boun...@mailman.qth.net  On 
Behalf Of Josep Torres via Elecraft
Sent: Wednesday, March 29, 2023 3:03 AM
To: Elecraft Reflector 
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)



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Re: [Elecraft] TL-922

2023-03-29 Thread Mark Musick
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-boun...@mailman.qth.net  On 
Behalf Of James F. Boehner, MD via Elecraft
Sent: Wednesday, March 29, 2023 11:55
To: 'Josep Torres' ; 'Elecraft Reflector' 

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%7C84df9e7fe9f640afb435%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-boun...@mailman.qth.net  On 
Behalf Of Josep Torres via Elecraft
Sent: Wednesday, March 29, 2023 3:03 AM
To: Elecraft Reflector 
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)



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Re: [Elecraft] TL-922

2023-03-29 Thread James F. Boehner, MD via Elecraft
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-boun...@mailman.qth.net  On 
Behalf Of Josep Torres via Elecraft
Sent: Wednesday, March 29, 2023 3:03 AM
To: Elecraft Reflector 
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)



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Re: [Elecraft] TL-922

2023-03-29 Thread Paul Dluehosh

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)



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Re: [Elecraft] TL-922

2023-03-29 Thread Ken Winterling
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  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
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>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
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Re: [Elecraft] TL-922

2023-03-29 Thread Jim Brown

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


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[Elecraft] TL-922

2023-03-29 Thread Josep Torres via Elecraft
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)



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