Ashar,
I did measure the audio at the C119? (both sides) and the audio level is fine there. However I hardly get any HF power out.
The audio scope on the screen shows the waveform but I don't know if it is the correct level. I asked my friend Pete to make a pictures of his screen so I can compare.
CW, ft8 and two-tones gives the expected power output. No output in psk31 nor RTTY. Could the the WM8731 IC. be defective?
Yvon AE7YD