MT-63 requires a very accurate soundcard calibration. 1% out of calibration (or even less) and MT-63 struggles.
Simon Brown, HB9DRV www.ham-radio-deluxe.com ----- Original Message ----- From: "Leslie Elliott" <denalid...@gmail.com> Thanks, I kind of figured it out myself. There was a QSO I was listening to later, which switched from PSK to MT63. However, I could not get a decode after they switched. I'm using DM780, and try as I might, carefully adjusting the trace back and forth to try to center it on the signal, I could get nothing but gibberish printed out. Don't know what was the problem. Any suggestions? It was MT63-500 according to the width of the waterfall trace.