hi Ed,
Thank you for your thoughtful and valid suggestions !
Sometime,? If you find more info on your? ?NEC --800x devices that you mentioned, I would appreciate that !!?
Not having the Aeroflex 3416 MESFET data sheets? nor the signal generator schematics is difficult.
The Areoflex MESFET's are very HOT all the time, with no Rf output of any kind.
I will try to trace out the circuit.
thank you,
rick