Jon and Allard.
Notice that the input drive to the PA is controlled by R136.
Try increasing that SLOWLY and see if it makes a difference.
You might also check the AC voltage there. It should be 1-2v Pk to Pk.
(maybe a bit more. Not less).
That is the AC control of the 2N2219. The voltage to the gate of
the final is controlled by RV1. You might also check that. MAKE SURE
IT IS 3-4v OR SO. Do NOT increase it at random or fast. You will
blow up the final!
john
AD5YE
