I've made some progress on Q11 overheating, and 'crud' in the modulation on this unit. Various bypass capacitors on Q11 seemed to help, but I didn't think that the FET was cool enough and the envelope

I bypassed the gate of Q11 with a 1 MFD electrolytic as suggested by Bob, W9RAN. I now get modulation envelope above and below the unmodulated carrier, which is what I would expect. However, the devic

Hi Bob, got same issue on mine. Q11 get real hot real fast in tx. I'm awaiting some FETs to arrive before additional troubleshooting. Please keep me in the loop as to what you find. -73- Jeff W9GY Cal