07-06-2022, 04:55 PM
You might try a 78 tube. 6C6/6D6 for 77 or 78's haven't worked for me at all. The 57 has a 2.5v heater vs 6.3 of the other.
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