07-06-2017, 12:21 PM
Hi and welcome to the Phorum,
Well I have a couple of answers for you.
Try and find a parts unit w/a good transformer.
If you like experimenting you can replace it with a tube type interstage transformer (single plate to p/p grids). Plate side (red and blue wires) go to the osc grid and gnd. Green wires are the two ends of the winding black is the tap. These go to B+, switch, and cathode follower plate. You may have to play w/the phasing to get it to oscillate. By changing the value of C-112 it will change the frequency of the audio tone of the audio oscillator.
GL
Well I have a couple of answers for you.
Try and find a parts unit w/a good transformer.
If you like experimenting you can replace it with a tube type interstage transformer (single plate to p/p grids). Plate side (red and blue wires) go to the osc grid and gnd. Green wires are the two ends of the winding black is the tap. These go to B+, switch, and cathode follower plate. You may have to play w/the phasing to get it to oscillate. By changing the value of C-112 it will change the frequency of the audio tone of the audio oscillator.
GL
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
