Informational sites about crystals.
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Bliley Electric Company History: The Early Years, 1930-1955
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.
Crystal Grinding
FT243 information compiled by Paul Carreiro, N6EV.
Crystal Oscillators
From N6EV. Tube oscillator schematics, and discussion.
Crystal Oscillators
From N6EV. Tube oscillator schematics, and discussion.
Bliley Electric Company History: The Early Years, 1930-1955
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.
Crystal Grinding
FT243 information compiled by Paul Carreiro, N6EV.
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January 16, 2018 at 7:05:04 UTC
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