Other than ceramic, can anything else be used as a coil form? Heathkit
used a fiberglass form in the SB-220. At least I think it was fiberglass.
Seems to have worked OK. Dentron used what looks to be some type of
phenolic material. Not really sure what it was. Anything out there that can
be
used that does not cost an arm and a leg? I am looking to make a coil for
RF about 1 1/2" to 1 3/4" dia about 6" long. Not to be used for plate
chokes. Lou
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