[time-nuts] OCXO sensitive to gravity

Rick Karlquist richard at karlquist.com
Sat Aug 15 21:32:32 UTC 2009


Robert Darlington wrote:
> not 980kHz, not 1.2Mhz.  The way I achieve this is to lay down gold, a few
> atoms at a time, and track a resonance peak (network analyzer and some
> simple code in VB of all things).  We actually drive the transducer as we
> sputter coat the gold on top and can see the resonance point shift, real
> time.  Cool stuff.  They use a similar process in industry but they're
> looking at one data point in a vacuum chamber full of transducers.  I'm
> looking at every single one.
>
> -Bob

The 10811 crystals were made this way.  One at a time, they were
coated with gold while connected to a network analyzer.

Rick Karlquist N6RK




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