In message <4fa006e8.5040...@verizon.net>, "Stan, W1LE" writes:
>I will use a HP-3336C with the station 10 MHz (GPS/DO) reference. > >Typo: trigger should really be 11.148272 Hz instead of KHz ! You need a really amazing stable and noise-free trigger to lock onto a 5.5Hz (see below) sine at the required level of stability (~2usec). I used my HP33120A once, but its square output is made with a comparator on the sine wave, and has pretty bad jitter. Switching to saw-tooth solved that, defining my own arbitrary square-wave was even better, not sure why. You want 1/(2*.089700) = 5.574136 Hz, otherwise every other loran-c pulse will cancel out due to the A/B coding polarity. If you don't have a counter-based signal generator, consider stealing a GRI or FRI-rate signal from one of your loran-C receivers, I belive the AUSTRON 2000/2100 offers it on a BNC at the backside. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.