Hi I see this has been mentioned before - but my KPA500 was pretty quiet when I first got it (plugged in - but not 'ON')
Now - sometimes - it has a pretty loud hum while 'OFF' - I turned the power switch at back on / off a couple of times - and it quieted down.. after a couple of minutes it started humming again at what I consider is an objectionable level, stopped for a minute - now humming again. Just listening to 20 meters, nothing else going on.. Any suggestions? ( I have turned the back power switch 'OFF' for the moment - but that is quite inconvenient) thanks 73 John VE3NFK -- View this message in context: http://elecraft.365791.n2.nabble.com/KPA500-hum-tp6685742p6685742.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
