02-07-2022, 06:44 PM
Back to troubleshooting 101.
We need to figure out where the lost of gain is. Does the IF play good and loud when injecting a 460kc modulated @ the grid cap of the 77 mixer tube? With the generator output turned down very low?
What sort of reaction do you get from the shadow meter when a strong signal is applied to the ant. If the coil is open it's not a big deal to rewind.
Check plate, screen grid, and cathodes voltages for too low or high readings.
What did you do to the DO NOT ADJ trimmers on the tuning capacitor?
Not that it matters much is it a cathedral or tombstone?
We need to figure out where the lost of gain is. Does the IF play good and loud when injecting a 460kc modulated @ the grid cap of the 77 mixer tube? With the generator output turned down very low?
What sort of reaction do you get from the shadow meter when a strong signal is applied to the ant. If the coil is open it's not a big deal to rewind.
Check plate, screen grid, and cathodes voltages for too low or high readings.
What did you do to the DO NOT ADJ trimmers on the tuning capacitor?
Not that it matters much is it a cathedral or tombstone?
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
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
