03-29-2018, 07:27 AM
> is the drawing wrong?
I think you are asking if 20K is the proper value for this control. Yes it is. As you may note it does control the volume but it not in the audio circuit which is a more common configuration. This one controls the level of rf signal that enters the receiver. This is why the value is much lower than one that is used in the audio (abt 500,000 ohms).
If you are looking for an opinion as long as the resistance is consistent across the turning range of the control I would leave it till I got the set working. Worst case is that the control will have most of is effect within the first 20% of so. It's not a very common value to find a replacement may be a little tricky.
Hope this answers your question.
I think you are asking if 20K is the proper value for this control. Yes it is. As you may note it does control the volume but it not in the audio circuit which is a more common configuration. This one controls the level of rf signal that enters the receiver. This is why the value is much lower than one that is used in the audio (abt 500,000 ohms).
If you are looking for an opinion as long as the resistance is consistent across the turning range of the control I would leave it till I got the set working. Worst case is that the control will have most of is effect within the first 20% of so. It's not a very common value to find a replacement may be a little tricky.
Hope this answers your question.
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
