[time-nuts] Re: FS740 Thoughts?

Poul-Henning Kamp phk at phk.freebsd.dk
Thu Nov 18 13:01:08 UTC 2021


--------
Dana Whitlow writes:

> You did not really answer the basic question: "Does the 2.5 Hz
> (or 5 Hz if applicable) C-field reversal cause the 2-sec bump in
> the ADEV plot for  the PRS-10?".

I cannot answer that question as stated.

My PRS10 died years ago, all I can say is that when I commissioned
it, I disabled the MS because it improved things.

> BTW, some radio hams are involved with microwave and even
> MMW communications between mobile stations, [...]

In any mobile application, or other application where the magnetic
field is not nearly contant (for instance behind a steel door in a
outdoor base-station cabinet, I would absolutely keep MS on.

But for a time-nut installation, where the location is fixed,
temperature controlled and, I would assume, due consideration
is given to also keep the magnetic field from slamming around,
I suggest MS be disabled.

But it's a really trivial experiment to perform, so do it, measure
and decide what is right for you.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at 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.




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