Bill, I have observed the same wav problem not only AM but ssb also. When playing a wav file it plays ok the first time. When complete it shifts the vfo up 11khz. playing a second time it is off 11khz. The vfo has changed but the readout is not changed. Move the vfo down a khz and back up a khz and playback is ok for one play again. Playing in "loop" mode replays ok until it is stopped. This occurs in both preproc and postproc. Also I tried playing this "wav" file using media player and player runs but no audio out.Does this mean it is not a real wav file? I can play other wav files ok. Does anyone know if this wav file can be transmitted? Can not get it to transmit. How do you configure SDR to transmit wave ? I am using v1.4.5 preview 12 73, Bob K2LZG
