The problem was isolated to the CAT plug. The only way I found it was that when I physically touched the shell it was microphonic. In other words, I could hear myself running my fingers across the connector in the headphones. I unscrewed the jack-screws and the problem disappeared. MicroHam pots the inside of the connector with white RTV, so it is impossible to know if there is any sort of ground pin issue.
Thanks to all who sent suggestions, especially Rene at Elecraft. Tom Taormina, K5RC Virginia City NV Home of W7RN and K7RC <http://k5rc.cc> http://k5rc.cc FOC 1760 "Communication is the problem to the answer" - 10cc ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
