Civilian Wartime Radio - Further Notes

[Sparks]

I decided to try and make my own oscillator coil.    Having measured the original, it was 100uH and 6uH.    I cut a small paxolin panel and fitted it with four double solder tags.    Across the top ones, I soldered a 100uH choke, round which had been wound 60 turns of 34 swg enamelled copper wire.   This winding was pure guesswork, and it metered at 20uH, but I decided to try it anyway.      The results are completely satisfactory.    It performs just as well as the original.      I even guessed at the correct way round for the extra coil windings.   If it had not oscillated, I would just have swapped the wires over.