[time-nuts] E1938A PN measurments

[Bob Camp]

Hi

Close in, it looks like it's pretty much the crystal and the loading of the bridge oscillator.

Bob

On Sep 29, 2012, at 11:46 PM, Richard (Rick) Karlquist <richard at karlquist.com> wrote:

> The E1938A uses a crystal that is basically the same as
> the 10811 crystal except that it is in a reduced height
> package.  However the phase noise is not as good as a
> 10811 due to broadband noise in the automatic frequency
> control circuit.  By the time I discovered this, it
> was too late to try to fix it.
> 
> Rick Karlquist N6RK
> E1938A designer
> 
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