Perhaps I did not explain the noise problem, cause and cure situation correctly. One of the P/S was purchased from a friend, the other I bought new. The one purchased from my friend had been used; the input power select switch on the back had be changed to 110V as it should be for 110v operation.
I had both P/S sitting side-by-side and had not yet changed the power in 220/110 switch setting to 110 on the new supply. I mistakenly picked up the new one and used it with the K-3. Operating the P/S on 110 with the input power select on 220 caused the K-3 to sound like a Marconi Spark Gap Transmitter. The fix was simple, change the input power switch to 110. "My bad" 73 Jack ______________________________________________________________ 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

