Haven't had a chance to do more than glance at it yet, but the new issue of QEX (the American Radio Relay League's bimonthly technical journal) has an article on "A simplified GPD-Derived Frequency Standard" by Bertrrand Zauhar, VE2ZAZ.
It uses a PIC and small handful of other ICs and appears to be based on frequency, rather than phase, measurement. The claimed short-term performance is in the 1x10e-10 range. John _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
