11-25-2011, 09:41 PM
All sounds good! The resistance of the new winding doesn't matter so much it's the inductance that's important. The other important thing is the direction of the winding, must be wound the same as original!
Once you get the set put back together you can check the osc by listening for it in another receiver. You can use a small transistor set placed next to the osc tube. Tune the Philco to 1000 kc then tune the transistor set to 1000kc + the IF frequency. I don't remember the IF frequency of the 91 I think it's 260kc which would equal 1260kc. When it's working as you tune the set around 1260 it will get quite or start to squeal.
Terry
Once you get the set put back together you can check the osc by listening for it in another receiver. You can use a small transistor set placed next to the osc tube. Tune the Philco to 1000 kc then tune the transistor set to 1000kc + the IF frequency. I don't remember the IF frequency of the 91 I think it's 260kc which would equal 1260kc. When it's working as you tune the set around 1260 it will get quite or start to squeal.
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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