Grinding crystals,FT-243, Etching Crystals, Grinding FT243 crystals, Etching radio crystals @robertsumption1243

Uploaded October 2012 | Updated September 2026, 2 weeks ago

A better innovative method of grinding and etching in 3 % Hydrofouric acid solution surplus FT243 crystals . Crystals are available on Internet auction sites and at Amateur Radio (Ham) Hamfests . Crystals can be moved UP in frequency only with these techniques .

Grinding crystals,FT-243, Etching Crystals, Grinding FT243 crystals, Etching radio crystals

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