Metal Recycling Entrepreneur
The only air gap capacitors I've ever come across were from WWII military radios,
The air gap caps were used to tune in radio frequency which has now become obsolete technology everything today uses digital tuners,
Crystal radios a totally different animal, then we have the razor blade radio shown in the sort youtube video below.
Various caps, the fins are aluminum.
Last edited by Smf-retired-user-0043; 12-21-2016 at 12:04 PM.
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