12-15-2017, 03:42 PM
A couple of things popped out at me. Try removing the rectifier tube and turn it on. Do you still have the buzz?? If so then try removing the vibrator to hear if that knocks the buzz out. Also noticed that the resistance of the secondary of the output transformer is pretty high like 30 ohms. Impedance wise that's about 35 ohms. Makes me think that your replacement spkr may not be a very good match if the vc is 8 ohms.
Some of us old timers would use a separate ac power supply to get the radio working and than come back to the power supply to sort the noise issues.
GL
Terry
Some of us old timers would use a separate ac power supply to get the radio working and than come back to the power supply to sort the noise issues.
GL
Terry
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got it!
Terry
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