Crystals Boatanchors Amateur Radio

History of the company that invented and patented the overtone crystal, etch-to-frequency and variable crystals. Source for ads, engineering bulletins, patents and manuals.

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• Crystal Info - A handy historical chart of old crystal holders crystals with dimensions, boatanchors and suppliers.
• Bliley Electric Company History: The Early Years, 1930-1955 - History of the company that invented and patented amateur the overtone boatanchors crystal, etch-to-frequency and variable crystals. Source amateur for ads, engineering bulletins, boatanchors patents and manuals.
• Crystal Grinding - FT243 information compiled by Paul Carreiro, N6EV.
• Crystal Oscillators - From N6EV. Tube oscillator schematics, and discussion.
• Technical Information - A useful technical reference page for Crystals.
• Crystal multiplier chart - WB6SZS, Eugene Rippen\\'s chart for crystal use on boatanchors the HF, amateur VHF and UHF bands.

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