12-24-2017, 03:39 PM
> it looks like the only way to adjust the 3 stages is to physically adjust the pulleys on each shaft for maximum signal.
That's it. A lot of the older trf set are set up that way. The ones that use #26 tubes or triodes may have a neutralization adjustment. Triode AK sets battery and early ac like the model 20 or 40 use a resistor in series w/the grid lead to prevent oscillation.
That's it. A lot of the older trf set are set up that way. The ones that use #26 tubes or triodes may have a neutralization adjustment. Triode AK sets battery and early ac like the model 20 or 40 use a resistor in series w/the grid lead to prevent oscillation.
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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