The 5071 cesium has no measurable environmental sensitivity to temperature, pressure, or humidity, down to a measurement threshold of 1 part in 10^15.
The 5061 cesium had various environmental sensitivies due to the harmonic generator. This generator was far more efficient than any other I have studied (and I spent too much time working on SRD frequency multipliers). It was designed by a Korean professor and no one at HP really understood the magic in it. Being so highly optimized, it was fairly temperamental. Also, the joints leaked RF due to silver tarnishing, etc. Thus RF leaking out then back in could be affected by the environment or removing the top cover. The 5061 had a frequency coefficient of microwave power that doesn't exist in the 5071. It wouldn't surprise me if humidity affected the 5061, although I don't have any direct evidence of it. Rick Karlquist N6RK Poul-Henning Kamp wrote: > In message <[EMAIL PROTECTED]>, "Richard > \(Ric > k\) Karlquist" writes: > > Wasn't humidity also the main source of trouble with the cesiums ? > > -- > 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 > time-nuts@febo.com > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts