06-11-2018, 10:26 AM
Your ballast tube is a couple of high wattage resistors in a can. Should read about Pin 3-8 132 Ohms, Pin 7-8 84 Ohms if good. It's used to drop the 120v ac line down the the appropriate heater voltage (49v @ 300ma)to power the series strung circuit. This means that the total of the tubes heaters should come to about 76v. = two 25v tubes and four 6v tubes.
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!
Terry
