John, Quoting "J. Forster" <[email protected]>:
The GRI and Delay counters need to be 5 decimal digits. My current thinking is manual entry of the numbers via BCD coded thumbwheel switches.
More than thirty years ago, I built a Rate Generator for LORAN-C excatly according to the above principle. It is still wandering at my junk box and is a three digit preset counter (3XSN7490) a quad input decoding gate (SN7420) and the thumbwheel switches. Using more or less the same principle there is also a six digit delay resolving one microsecond. They are very ancient designs but they work pretty well. Best regards Antonio CT1TE _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
