[Elecraft] K3 - SteppIR - KPA500 interconnection

David Bushinsky david_bushinsky at urmc.rochester.edu
Fri Dec 16 11:41:18 EST 2011


Goal is to not allow the KPA500 to transmit until the SteppIR controller has
finished tuning.

The SteppIR controller, with the tuning relay option, has a stereo plug
input, the K3 and KPA500 both have RCA plug inputs.  My thought is to get a
shielded audio cable with a stereo plug and two RCA plugs (common cable to
power an audio system from an ipod).  One RCA plug into the K3 PTT, one RCA
plug into the KPA500 and the stereo plug into the SteppIR controller.  Once
the SteppIR has finished tuning it will close the connection on the PTT line
allowing the KPA500 to transmit.

I think it should work but have yet to try it.  Thoughts?


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