Hi,
On 05/29/2014 06:47 PM, Richard (Rick) Karlquist wrote:
On 5/29/2014 9:15 AM, [email protected] wrote:
On these latest oscillators at the longer Tau (>100sec.)
the Quartz versus Quartz data shows much better performance
than the Quartz versus Maser!
What is happening (I think) in this case is that both Quartz units
have exceptionally low and similar ageing.
Or alternately, the quartz units are injection locking to
each other.
When they do, they drift together, so the delta-drift is zero and thus
do not polute the measurement.
Injection locking would also cancel some of the noise naturally, depends
if one oscillator locks to the other or if both locks to each other.
Running one of them off frequency would reduce the noise cancellation
due to injection locking.
Cheers,
Magnus
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