My experience is the opposite - I haven't yet used a switching PSU that _didn't_ cause some kind of nasty noise in my rigs, usually like computer generated noise. A broadband hash with spikes of hum at various places is usually what I get.
I simply threw batteries at the problem - now I exclusively use my 80AH wheelchair battery for my K2 and K3 with no more troubles. The PSU's either went in the trash or were sold, and the money was used to buy my battery.... 73, LS W5QD -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-on-Order-tp5299697p5306020.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

