09-03-2021, 04:59 AM
I'm not all together certain that it's a trf set. On a typical late '20s-early '30s trf set you would have a row of 3 rf coils that are pretty much identical. Your set they're all different looking. I'm thinking that it could be an early superhet.
One clue that I did find is that it seems that most of the Z sets with 47 output tube used an IF of 175kc which is good as it's a standard frequency (for early sets) and is not impossible to find. But I would take a listen at the 1st stage to see if there is something oscillating below the incoming signal (dial setting). You could connect a low frequency receiver to the ant wire of the zenette and power it up. If there isn't any other issues like shorts or like things that will kill the p/s or output stage. Check to see if the voltages look reasonable around the 1st tube.
One clue that I did find is that it seems that most of the Z sets with 47 output tube used an IF of 175kc which is good as it's a standard frequency (for early sets) and is not impossible to find. But I would take a listen at the 1st stage to see if there is something oscillating below the incoming signal (dial setting). You could connect a low frequency receiver to the ant wire of the zenette and power it up. If there isn't any other issues like shorts or like things that will kill the p/s or output stage. Check to see if the voltages look reasonable around the 1st tube.
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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