Don't know what I may have changed, but when I transmit using SSB - there is a terrible "echo" ringing in my headphones - ideas? - Tony, N3ME - 118 Ashwood Street Bethany Beach, DE 19930-9699 (302) 539-5638 Grid: FM28lm http://www.n3me.net Elecraft K3 # 2462 PVRC Member