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

Rick Karlquist richard at karlquist.com
Wed Jan 5 00:23:48 UTC 2011

Brucekareen at aol.com wrote:
> Luciano Paramithiotti's January 1 post about his 10-to-100 MHz multiplier
> project reminded me of past musings about using two 10GHz, phase-locked
> oscillators to compare the 10MHz outputs of my T-bolt and LPRO so I  could
> quickly adjust the latter by observing the mixed 10 GHz signals with  a
> microammeter.  I am talking about the California Microwave, Frequency

It has been my experience that most sources have too much jitter
to multiply from 10 MHz to 10 GHz and expect to compare with a
phase detector, even if the two 10 MHz sources are phase locked
to each other, let alone independent.

Rick Karlquist N6RK

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