Twice mine has hummed loudly enough (always when off from the front, on from the rear) that I looked for the noise, and unplugged it. I guess perhaps it's related to line voltage, which changes. I will monitor line voltage with my KILL-A-WATT meter and see if I can correlate it.
Leigh/WA5ZNU -- View this message in context: http://elecraft.365791.n2.nabble.com/KPA500-Hum-tp6832607p6834727.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
