[time-nuts] Phase noise measurement (was - no subject)

[Poul-Henning Kamp]

In message <4a8e.56751f36.39a11aa2 at aol.com>, EWKehren at aol.com writes:

>On all phase noise measurements I use AGM batteries.

Be aware that chemical batteries can be incredibly noisy, in particular
wet or semi-wet types.

It is not periodic noise, so for PN measurements with sensible
averaging periods it probably does not matter.

Poul-Henning

-- 
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.