[Elecraft] KPA500+KAT500 interfacing

[john at kk9a.com]

So what does the HD15 cable do from the KAT500 to the KPA500?  I  
thought that the KAT controlled the amp but perhaps it is just passing  
the K3 data through.

John KK9A



Jack Brindle W6FB wrote:

I received a bit of further information this morning. The KAT500 only  
uses the band data to validate that the received frequency (from the  
K3) is on the indicated band. It does not use it for anything else.

Further, the KPA500 only uses band data to select the band. In  
general, the KPA doesn’t care about the frequency - it really has no  
frequency-sensitive elements. The KPA does not receive frequency from  
the K3, and only uses the Kenwood data (or Icom band voltage) to  
select a band. Thus there is no data to be sent.

I believe you are searching for a solution that gathers transceiver  
frequency and sends it to the KAT500. Or, allow the KAT500 to use its  
built-in frequency measurement system to select the bin.

Jack, W6FB


> On Nov 18, 2020, at 8:00 AM, Wes <wes_n7ws at triconet.org> wrote:
>
> Thanks Andy.
>
> I'm starting to get my head around this.  "Tis a pity that Elecraft  
> didn't allow for the KPA500 to control the KAT500 via the band data  
> bus and have an integrated Amp/Tuner combo that didn't require a  
> proprietary interface.
>
> The tuning solutions are in the tuner memory so telling it, or  
> letting it measure, the frequency recalls them.
>
> Wes