03-16-2022, 09:52 PM
Not familiar with this radio, but looking at the schematic for part 19 - check the ohms on all three coil sections there and toggle the switch in/out to check each way as indicated on the schematic at this point (A6? - hard to read on my copy). I did not find this trimmer in the 37 philco catalog, but seek out all parts catalogs you can find on the web to see if you find it.