[Elecraft] KPA500 AUX Cable and KRC2

[iain macdonnell - N6ML]

On Wed, Jun 29, 2011 at 7:45 PM,  <n5ge at n5ge.com> wrote:
>
> Problem found!
>
> With the help of Paul at Elecraft support we found the problem.
>
> If the PR6 is activating DIGOUT1 Of The K3 KPA500 while when the K3 is in
> transmit mode.

Having a hard time parsing that sentence ;) ... but if you're using
DIGOUT1 to control the PR6, you would need to disconnect it from the
inhibit input of the KPA500.

Does the "Keying Line Interrupter" cut both the DIGOUT1 and PTT lines,
or only the latter? If it cuts both, you should be able to solve your
problem by placing it on the KPA500 side of the Y-adapter and running
a separate (RCA) keying line.


> This will require (hopefully) a firmware modification to one or both units.

Not sure how your problem could be fixed in firmware..........

    ~iain / N6ML



> On Wed, 29 Jun 2011 13:50:33 -0500, n5ge at n5ge.com wrote:
>
>>Does anyone have  this combination working?
>>
>>K3, KPA500 and KRC2.
>>
>>AUX Cable connected to the KPA500, then connected to one side of the supplied Y
>>cable, which is connected to the K3 ACC connection.  The other side of the Y
>>Cable is connected to the KRC2.
>>
>>With this connection the Amplifier will not key, although it is communicating
>>with the K3 in both directions.
>>
>>Since all of my antennas are switched by the KRC2 I am unable to use the Amp on
>>the antennas.
>>
>>The Elecraft Support folks told me to put the Key Line interrupter in the line
>>that connects to the KRC2. That does not work.
>>
>>I'm getting a little frustrated at not being able to use the KRC2 with the amp
>>Aux cable connected.
>>
>>73,
>>Tom
>>Amateur Radio Operator N5GE
>>ARRL Lifetime Member
>>QCWA Lifetime Member
>>
>>
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