[time-nuts] Phase noise and geomagnetism

John C. Westmoreland, P.E. john at westmorelandengineering.com
Mon Apr 28 18:29:28 EDT 2014


That is a great question.  I am not 100% sure of the answer myself, but I
am sure others will chime in.

I used to be responsible for an RF lab in which we did a lot of low-noise
measurements; had shielded racks, chamber, etc. - I can tell you from
experience that
anything that can raise or effect the noise floor can affect the
measurement(s).  So, in this case, I would think that is true; so I would
postulate that it is possible.

But, there may be some on the list that have made these measurements and
will share their experience and expert knowledge.


On Mon, Apr 28, 2014 at 2:18 PM, iovane at inwind.it <iovane at inwind.it> wrote:

> As our geomagnetic field gets quite noisy during geomagnetic storms (which
> are connected to solar activity), I was wondering if this could affect
> phase noise of oscillators. I see that theoretically it could. Has anybody
> ever measured phase noise increments which could be explained this
> way?Antonio I8IOV
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