09-25-2022, 12:50 PM
Ok, here's an update on my oscillator coil from my 38-12 radio I'm working on. As stated in my previous post, the DC resistance on the secondary showed 1.5 ohms. I carefully unwound the secondary winding and the wire was not broken anywhere; got 1 continuous piece of wire. After taking several measurements, I concluded that the wire was 34 gauge. Also looked at the original wire and the new 34 gauge wire under a jewelers loupe and they looked identical. Carefully replaced the insulating "plastic"??? piece between the windings and wound 25 turns of the 34 guage wire on the form. After winding the wire DC resistance measured at 1.6 ohms; almost like the original. Took many pictures and drew a diagram of the coil and which way to wind the wire. I want to suggest that maybe the schematic is wrong where it shows the resistance at 3.5 ohms; IDK. After completing the coil winding, I coated the winding in a slight coating of beeswax to make it look original. I think it came out looking pretty good considering I wound it by hand. I'll post updates when I eventually power up the radio.