And the answer is: the baud rate not set correctly in the K3. I hope I did not take up any ones time due to my inability to operate the radio functions. 72 Frank K0JQZ -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-is-not-talking-to-K3-tp7403636p7403688.html Sent from the Elecraft mailing list archive at Nabble.com.