Walter Wilson wrote: > I have a very distorted transmit audio (listening on another receiver) > around 7.183 KC on LSB. If I move up or down the band only 4 or 5 KC, > everything is clear again. On USB, the problem occurs at 7.180 KC. Any > ideas??? This has been called the WAOF (Weird At One Frequency) problem. See: <http://www.elecraft.com/Apps/Alert11_WAOF.html> Vic K2VCO