A local ham had the exact same problem. It was not a problem with his setup. Elecraft replaced the PA board and the problem went away.BruceKS4V -------- Original message --------From: Jim Miller <[email protected]> Date: 8/1/18 10:42 AM (GMT-06:00) To: Ignacy <[email protected]> Cc: [email protected] Subject: Re: [Elecraft] K3s+KPA500 SSB audio distortion I ran my KPA500 for several years at 500w and often received unsolicited “great audio” reports. CM500 was my headset.
Something is wrong with your setup. Jim ab3cv (have kpa1500 now) On Aug 1, 2018, at 11:09 AM, Ignacy <[email protected]> wrote: Could it be RF feedback? You can check it by transmitting into a dummy load or lowering the drive power. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.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 Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]

