Sorry was not clear. Should have said the KX3 defaulted to 4800 and if you have not reset it after you added the amp you need to reset to 38400. -- View this message in context: http://elecraft.365791.n2.nabble.com/Computer-won-t-connect-with-kx3-tp7585628p7585644.html Sent from the Elecraft mailing list archive at Nabble.com.