09-10-2026, 11:19 PM
Murf;
I found it here https://www.nostalgiaair.org/pdfs/Westin...-WR370.pdf The schematic says 1 meg ohm, shows it as R11. Since it's a tone control I think that you can use a linear pot, you don't need a log pot with an audio taper like a volume control. This set look a lot like my Canadian RCA 911K, motor drive, TRF amplifier stage, and 6F6s in push pull. https://pacifictv.ca/schematics/rca911kschematic.pdf some tubes are different though, and it has 12 as opposed to 11 because it has an extra IF amplifier stage. It has one odd feature, there was a switch on the back of the tone control that would allow you to widen the IF bandwidth for higher fidelity, I have seen this before but they usually have a separate control for "fidelity" not a two in one affair like this. Maybe there is a U.S RCA model that has better service info as I'm pretty sure that this is an RCA designed set?
Regards
Arran
I found it here https://www.nostalgiaair.org/pdfs/Westin...-WR370.pdf The schematic says 1 meg ohm, shows it as R11. Since it's a tone control I think that you can use a linear pot, you don't need a log pot with an audio taper like a volume control. This set look a lot like my Canadian RCA 911K, motor drive, TRF amplifier stage, and 6F6s in push pull. https://pacifictv.ca/schematics/rca911kschematic.pdf some tubes are different though, and it has 12 as opposed to 11 because it has an extra IF amplifier stage. It has one odd feature, there was a switch on the back of the tone control that would allow you to widen the IF bandwidth for higher fidelity, I have seen this before but they usually have a separate control for "fidelity" not a two in one affair like this. Maybe there is a U.S RCA model that has better service info as I'm pretty sure that this is an RCA designed set?
Regards
Arran
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