[Elecraft] Kpa 500 problem when auxiliary cable connected ...

[Jim Brown]

On Mon,8/15/2016 10:28 AM, Don Wilhelm wrote:
> Are you attempting to use the band decode lines on both the Icom and 
> the K3 at the same time?
> That will cause problems unless there is some kind of isolation provided. 

And remember that the KPA500 does NOT need band information from the rig 
-- it reads frequency with a short burst of RF and switches to the right 
band. So does the KAT500. Just hit a dit or tap the mic. The only 
interconnection that is NEEDED is the AMP KEY line.

The only thing that a full AUX cable adds is that it allows you to push 
buttons on the KPA500 to make the K3 change bands. I don't use an AUX 
cable, just RCA-RCA for AMP KEY. During contests, I do that with N1MM. 
Outside of contests, I use the rocker band switch on the K3.

73, Jim K9YC