1) Im seeing -37.7Vdc on Pin 3 of both 807'sAhh.. If you have a carrier, the 6146 tubes will not be the focus of an audio problem. Especially a "no audio" problem.
The modulator plate current is the key hint here. Until the negative grid-bias voltage on pin 3 of the two 807 tubes comes down you won't have modulator plate current, or audio.
Leads me also to wonder how strong the 807 modulator tubes are. But until you can get a plate-current reading with no mike audio there's no good way to tell without a tube tester old enough to test them.
Really makes it sound as if R15 has gone bad. Maybe?
Or maybe the two 807 tubes are just flat as a pancake.
73
2) R15 tested good at 1.6K but I changed it anyway.
3)I tested the 807's with a Precision 920 and they show strong although I know its not the best tester its all I had.
4) I did find R13 the adjustable resistor to be bad, ordered from Mouser and will update.
5) Anything I should be concerned with that may have made R13 go bad?
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