On Thu, 11 Apr 2013 20:45:52 -0700, kd7ts <kd7ts at comcast.net> wrote: > > Sidetone only appears on one channel, receive audio, on both. > Hi Don, A possibility I hadn't considered ... mentioned by W7PUA this AM.. Maybe you are using a single speaker. The receive audio is stereo. In CW transmit the side tone is only in one channel. Mike KD7TS