Prob. The front switch is a “soft switch”. Wakes up the amp from a nap.
Sent from my iPhone ...nr4c. bill > On Jan 4, 2019, at 12:57 AM, John_N1JM <[email protected]> wrote: > > I don't use my KPA500 a lot, but I just noticed with only the back switch on > I can hear a hum coming from the amp. It disappears of course when I turn > the switch off. Is this normal? > > 73, John N1JM > > > > -- > 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]
