measurements corp model 80 sig gen

[Alfred Lorona]

The am modulation in my model 80 quit. Which tubes are used in this circuit?
The rf output is OK.

tnx, AL

 

[Bill Janssen]

The am modulation in my model 80 quit. Which tubes are used in this
circuit? The rf output is OK.

tnx, AL

If the RF is OK and the voltage regulator is glowing that means the
rectifier is OK. There can't be very many
other tubes in that generator. The RF is a 955 tube and that is in the
round can.

It's been at least 20 years since I had mine open so I can't remember
what tubes are in there.

Bill K7NOM