08-07-2024, 03:28 PM
> Turns on ,hums loud as you bring vol up.
That's interesting it shouldn't matter much as the "volume control" doesn't really control the volume it controls the rf signal coming into the set. I have seen some sets that been modified so that the rf gain is fixed (w/a resistor) and an audio gain control replaced the original. If you trace the wiring around the original will go over to #2. Also the resistance of the pot would be much high if in the audio circuit like 1/2 to 1 meg.
Oh also spec on the resistors is 20%.
Just something to look for when you are replacing parts.
That's interesting it shouldn't matter much as the "volume control" doesn't really control the volume it controls the rf signal coming into the set. I have seen some sets that been modified so that the rf gain is fixed (w/a resistor) and an audio gain control replaced the original. If you trace the wiring around the original will go over to #2. Also the resistance of the pot would be much high if in the audio circuit like 1/2 to 1 meg.
Oh also spec on the resistors is 20%.
Just something to look for when you are replacing parts.
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
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
