In message <bb05041d-f03a-42ac-85c6-467110fc3...@leapsecond.com>, "Tom Van Baak (lab)" writes:
>Rule of thumb: quartz is best short term, Rb or H-maser mid-term, >and Cs by far the best long-term. I have never seen a technical description of the Cs used in the early GPS satellites, but I have seen many references to all sorts of troubles with them, including a much shorter lifetime than was hoped for. -- 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.