06-18-2014, 01:54 PM
Rebuilding a Philco model 80, I used all the advice from Ron Ramirez. I had already rebuilt one of these, so it was easy to remove the second IF transformer to replace the factory 4 megohm with a 2 megohm. Imagine my surprise when I found no 50 mmf in parallel with the resistor which had changed to 6.6 megs. It was easy to put a 50 mmf from my stock but I was amazed that such a radio with a missing part came out of the Philco factory. It must not have been very sensitive. I could tell that no one had removed that coil previously. Interesting mystery.