I hardly ever use notch. I recently noticed that the notch doesn't reduce the carrier as shown on the S-meter. Is it not in the agc loop? John N1JM -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Notch-tp4963433p4963433.html Sent from the Elecraft mailing list archive at Nabble.com.