I will do more testing. The auto detect is off, and I have good baluns/chokes on both of my antennas. It may be that I'm too close to my new elevated 40 vertical antenna. -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-internal-keyer-problem-tp5385342p5418371.html Sent from the [K2] mailing list archive at Nabble.com.