CMOS_KEYER_3

Published:2009/7/11 4:30:00 Author:May | From:SeekIC

Uses two CD4001AE quad two-input N0R gates. Q1A-Q1B form time-base MVBR, and Q1C-Q1D form dash flip-flop. Three of remaining gates synthesize three-input NOB gate for dash control. Q2D controls time-base MVBR and provides keyer output. Speed is adjustable from below 10 to over 70 WPM with R3.-C. J. Bader, Improved CW Transceiver for 40 and 80 Ham Radio, July 1977, p 18-22.



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