[Elecraft] [KPA500] stuck on TX when AUXBUS attached

[Jack Brindle]

Yes. It must be disconnected. The K3 is loading the band and PTT inputs to the KPA, pulling them low. This has two effects - it will cause the KPA to change to 60 meters, and the KPA will transition into transmit. If you wish to use the KPA500 with another transmitter, you will need to first disconnect it from the K3.

Jack Brindle, W6FB
Elecraft Engineering


On Sep 14, 2012, at 12:26 AM, eric norris <gliderboy1955 at yahoo.com> wrote:

> Tonight I tried to use my KX3 with my KPA500, but when I turn off the K3 that it is attached to via AUXBUS, then put the KPA500 into OPERATE mode, the asterisk comes on and it is in TX, which means that the receiver of the KX3 goes deaf.  Is this the way it is supposed to work, or have I messed up a setting?  Will I have to remove the AUXBUS cable from the K3--even though the K3 is turned off--whenever I want to use the KPA500 with another rig?
> 
> Thanks,
> 
> Eric WD6DBM
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