03-20-2024, 06:27 AM
Ok. If you think the osc is working is it working properly The osc has to track the frequency on the dial or "in coming signal"+ 460kc. If you take a piece of hookup wire and wrap a couple of turns around the 6A7 tube. Take the other end and connect it to the ant post of a well calibrated sw receiver or freq counter. Osc frequency should always be 460kc high than the frequency the is on the dial. For instants if the dial read 100 (1000kc) osc got to be at 1460kc for IF stage to hear it. When you move the dial down to 60 (600kc) osc got to be at 1060kc.
Sets w/bad ant coils and good osc work ok but the sensitivity is awful. And can usually be tested by hooking the ant to grid cap of the mixer tube. When this is the case Set will track fine w/stations being where they are suppose to be on the dial.
Sets w/bad ant coils and good osc work ok but the sensitivity is awful. And can usually be tested by hooking the ant to grid cap of the mixer tube. When this is the case Set will track fine w/stations being where they are suppose to be on the dial.
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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