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Philco Jr. Model 81 Volume Circuit
Bill Kinghorn
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Posts: 52
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Joined: Mar 2013
City: Minneapolis, MN
#2

03-05-2013, 11:22 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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RE: Philco Jr. Model 81 Volume Circuit - by Bill Kinghorn - 03-05-2013, 11:22 AM



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  1. The PHILCO Phorum
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