[Elecraft] KPA500 AUX input

[Richard Squire - HB9ANM]

Hi Guy and Ralph

Yesterday, I sent an e-mail to Gary at Elecraft support with that very same
question...
I am using a Unified Microsystems BCD-10 band decoder which has
opto-isolated inputs so it should not be a problem. I don't know W9XT's Top
Ten configuration though...
Let's see what Gary says – will forward his answer to you.
My K3 S/N 586 has the new KIO3 with the pull-up resistors and it works
flawlessly with the decoder.

73
Richard - HB9ANM

Guy, K2AV wrote:
> 
> 
> It will be easier to do the isolation to start with than figure out
> the facts of your particular combo, particularly since the most likely
> outcome is that you need to do the isolation.
> 
> 73, Guy.
> 
>> The question, should anyone venture an educated guess:
>> Can I drive the KPA500's AUX input in parallel with my existing decoder
>> using a Y cord, or should I isolate the K3 from both the KPA500 and W9XT
>> with diodes?
>>
>> Ralph, VE7XF
>>
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Richard - HB9ANM
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