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Philco Jr. Model 81 Volume Circuit
03-05-2013, 10:22 AM
Because the set has no AVC, and it has a regenerative 2nd detector, you'll probably need to keep a control at the antenna input. The 2nd detector will give low distortion only for a very limited range of input signal. But, if the set is too loud when it sounds best, you could make the grid resistor of the 42 a pot too. I'm sure there is something wrong on the schematic. The 4 meg resistor at the grid of the 2nd detector makes no sense as shown.
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Messages In This Thread
Philco Jr. Model 81 Volume Circuit - by Bill Bacco - 03-05-2013, 09:28 AM
RE: Philco Jr. Model 81 Volume Circuit - by Bill Kinghorn - 03-05-2013, 10:22 AM
RE: Philco Jr. Model 81 Volume Circuit - by Conelrad - 03-05-2013, 12:13 PM
RE: Philco Jr. Model 81 Volume Circuit - by Bill Bacco - 03-05-2013, 12:30 PM
RE: Philco Jr. Model 81 Volume Circuit - by Bill Kinghorn - 03-05-2013, 03:34 PM
RE: Philco Jr. Model 81 Volume Circuit - by Ron Ramirez - 03-05-2013, 04:32 PM
RE: Philco Jr. Model 81 Volume Circuit - by Bill Bacco - 03-05-2013, 09:49 PM
RE: Philco Jr. Model 81 Volume Circuit - by 7estatdef - 03-06-2013, 05:32 PM
RE: Philco Jr. Model 81 Volume Circuit - by Bill Bacco - 03-09-2013, 10:53 PM
RE: Philco Jr. Model 81 Volume Circuit - by Jay Thomas - 03-10-2015, 06:24 PM
RE: Philco Jr. Model 81 Volume Circuit - by Ron Ramirez - 03-09-2013, 11:12 PM
RE: Philco Jr. Model 81 Volume Circuit - by Bill Bacco - 03-10-2013, 12:00 PM
RE: Philco Jr. Model 81 Volume Circuit - by Bill Bacco - 03-11-2013, 09:58 PM
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