-------- In message <[email protected]>, Gregory Beat writ es:
>Surplus Ericsson GPS Timing Antennas (58534A), new in box, >to convert the RS-422 to RS-232 and provide a 1 pps output. I've used Synergy GPS's version for some NTP servers and there is one little detail they don't mention too much: The RS422 circuitry has a significant tempco. The PPS signal moves more than a microsecond as a result of this in danish weather, in particular in clear winter weather. Other than that, it's a quite convenient way to get GPS on a roof, since you can use anything from phone-wiring to CAT7 for the cable. Do think about lightning protection, if nothing else, tie a knot in the cable right outside the hole into the building. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | 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 -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
