Philco 80 Jr, just starting....
Posts: 7,294
Threads: 268
Joined: Dec 2009
City: Roslyn Pa
hey Terry
Thanks for advice. No I don't want to change grid leak resistor, it is 11.4K i/o 10K, and I think it is fine the way it is; the cap is mica and is probably OK.
And the radio works, so it needs some tuning but nothing drastic.
Interesting, I used one of the original #36 tubes (another one was cooked, the filament's gone), and it did work, but I made a smart choice of buying two tested tubes, and, after the radio worked, I tried the original; it did work in the Det.-Osc. stage, I saw no difference in amplification, but it did not work in the Second detector (regenerative); I could barely hear anything.
Judging by sound, the Audio is OK.
Actually the grid leak is the 3 or 4 meg resistor in the grid circuit.
Terry
(This post was last modified: 03-21-2012, 07:08 PM by Radioroslyn.)
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RE: Philco 80 Jr, just starting.... - by 7estatdef - 03-21-2012, 07:07 PM
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