Published:2009/7/2 9:22:00 Author:May | From:SeekIC
Uses FT243 crystat hand-ground to 4.5895 MHz, with 50-pF series capacitor allowing frequency to be trimmed to exactly 4.59 MHz for use in AFSK generator.-J. Nugues, AFSK Generator, Ham Radio, July 1976, p 69.
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