Hi, Bill, Maybe this old posting will help you out: http://elecraft.365791.n2.nabble.com/K3-CW-Offset-has-two-modes-td7260257.html Regards, Al W6LX _____________________________________________ When I made the change however, I could not hear either the DX guy (gal?) nor the other in the QSO - I heard both with the SSB setting. Bill K9HXO