03-11-2014, 03:45 PM
The Philco Repair Bench site suggests dragging a safety pin over the windings and listening for 'clicks.' It's worked well for me, even on completely disintegrated coils.
I don't know exactly what the resistor does electrically, but from my experience with crystal radios, about 1k stops low frequency AC hum from getting to the detector. Just a thought.
I don't know exactly what the resistor does electrically, but from my experience with crystal radios, about 1k stops low frequency AC hum from getting to the detector. Just a thought.
