[time-nuts] Update -- Comparing 10 MHz Oscillators at 10 GHz

Rick Karlquist richard at karlquist.com
Thu Jan 27 03:38:28 UTC 2011

Brucekareen at aol.com wrote:
> Thanks to some help from Joe Ruggieri, I finally managed to get a pair of
> 10.000 GHz microwave "brick" oscillators phase-locked to 100 MHz inputs.

> This experiment seems to confirm the earlier results by Ulrich Bangert and
> his friend that noise does not appear to be a problem with this method for
> rapid frequency comparison.  However it would be convenient to have an
> Bruce Hunter, KG6OJI.

It only really confirms that the method works with bricks, not
that it works in general.  The bricks are extemely low noise
in their own right and are locked with a narrow loop that prevents
source noise from degrading them.

Rick Karlquist N6RK

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