06-19-2014, 11:52 AM
Thanks to all for the response. I knew that the model 84 used the few turns of wire instead of a capacitor. The 84 schematic shows that. There was no such wire in my model 80 IF transformer. Morzh is right the radio did not work well at all without the capacitor. It is much more sensitive now with the grid leak capacitor. I am still amazed that the radio made it past Philco inspection.