[Elecraft] K3 Key out

[Iain MacDonnell - N6ML]

Phil,

I had the same issue when I hooked up an SB200. Because the keying
voltage in the amp is negative, you can't connect to the K3 directly. I
put in an intermediate relay, which works OK. I might install the
Harbach "soft-key" mod at some point...

Have you put a continuity tester across "KEY OUT"? So long as you
connect the positive side to the center, it should only read closed
when the K3 is transmitting.

     ~Iain



Phil LaMarche wrote:
> I've had many wonderful emails with suggestions and I thank you.
>  
> Let me be more specific:  The Amp Keyer works OK.  The 30L-1 keys OK.  The
> tested cable coming out of the Key Out on the back of the K3 isn't working
> properly.  It's in the closed position.  If I take the other end of the
> cable from the Key Out and plug into the amp keyer, it keys it without my
> keying the K3.  If I hook it direct to the 30L-1 it keys the amp.  I'm
> presuming the circuit is faulty in the K3?  Ideas?
>  
> Phil
>  
> 
> Philip LaMarche 
> LaMarche Enterprises, Inc.
>  <http://www.instantgourmetspices.com/> www.instantgourmetspices.com
> 
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> 800-395-7795 pin 02 
> 727-944-3226 
> FAX 727-937-8834 
> NASFT 30210 
> 
> K3  #1605
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