Many thanks to all who replied to my post. The issue appears to be "the Pin 11 problem"--which I'd read about before posting but wasn't sure it described my situation. Emails from several of you have helped me understand this issue better and I believe a modified cable with Pin 11 removed will resolve the issues I've been experiencing when both the KPA500 and the PR6 are plugged into the K3 AUX port using the Y cable.
I really appreciate the time so many took to respond to my query. Building the amp was very straightforward and it is working like a champ! 73 Paula k9ir -- View this message in context: http://elecraft.365791.n2.nabble.com/Relay-type-noise-with-KPA500-and-PR6-tp7568374p7568425.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html

