Jim, I have noticed the same thing when the K2 is too close to a power transformer or power supply. Try moving the K2 a couple of feet away from any AC fields and see if that cures it. Darrell VE7CLA K2 # 1973 On Tue, 2004-02-17 at 11:14, James T. "Jim" Rogers wrote: > Have noticed the receive audio on cw and ssb seems a little "raspy".