I would also agree to leave the K3 as-is. I don't see why there needs to be more ways to set USB and LSB.... just hold CW-Rev to get to the other one..... 73, LS W5QD -- View this message in context: http://elecraft.365791.n2.nabble.com/CW-CW-REV-config-option-tp4982568p4983548.html Sent from the [K3] mailing list archive at Nabble.com.