03-03-2016, 11:40 AM
Two quick test. First put your finger on the grid cap of the 75 tube. You should hear a hum. If not, you have a problem in the output section. Second, place a working radio near the 39-25. Tune the 39-25 to the low to mid part of the dial say 700. Tune the working radio 470 kc above 39-25. Rock either dial, you should be able to hear the oscillator. By doing these two tests you have tested about two thirds of your radio.
Steve
Steve
M R Radios C M Tubes