Craig, I had a similar problem with s/n 181, which turned out to be poor connection with the front panel. It was cured by removing the front panel and refitting it, taking care to make sure all the connector pins were made. With original fault the rear panel connection of a microphone worked ok. Hope this helps.
73 Bryan GM3AKF _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com

