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Coils in the FM bands are usually self-supporting made from bare 12 gauge copper wire, wound on a pencil or some other form 3/8 or 1/2" diameter, and then slipped off. The wire can come from stripped scraps of house wiring. They can be adjusted in frequency by compressing or expanding the turns slightly. The heavy wire helps make them frequency stable.
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Reece
Perfection is hard to reach with a screwdriver.
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