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Philco 20 Sensitivity
rfeenstra
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Posts: 1,190
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City: Allendale, MI
#3

11-05-2021, 03:32 PM
No, Mike, I have not. this shows up dramatically with the spectrum analyzer. Interestingly, I changed the inductance of the second intermediate coil (the one that feeds the plate detector) by inserting brass in the coil tube. I was able to increase the 550khz signal by about 6 or 7db without affecting the sensitivity at the high end of the dial. I'll glue the brass in rather than unwind some of the secondary to reduce inductance. At least I gained a little!
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Messages In This Thread
Philco 20 Sensitivity - by rfeenstra - 11-05-2021, 02:25 PM
RE: Philco 20 Sensitivity - by mikethedruid - 11-05-2021, 03:21 PM
RE: Philco 20 Sensitivity - by rfeenstra - 11-05-2021, 03:32 PM



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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration