Yes, its a K2 (sorry) The internal counter probe works, already tested in the earlier tests At U11 pin 6, I got a signal with 4.930kHz (2,4V peak to peak) Any idea? -- View this message in context: http://elecraft.365791.n2.nabble.com/BFO-Test-fails-tp5800004p5801501.html Sent from the [K2] mailing list archive at Nabble.com.