[time-nuts] Good clean-up oscillators

[timeok at timeok.it]

   Magnus,
   here the list of the most interesting OCXO  with the phase noise as declared by the companies.
   Luciano
   http://www.timeok.it/wp-content/uploads/2015/08/ocxo-comparative-table1.pdf


   Da "time-nuts" time-nuts-bounces at lists.febo.com
   A "Discussion of precise time and frequency measurement" time-nuts at lists.febo.com
   Cc
   Data Wed, 23 Jan 2019 21:43:34 +0100
   Oggetto [time-nuts] Good clean-up oscillators
   Fellow time-nuts,

   While we often look at long-term stability, ADEV etc. we consider
   oscillators in their free-running properties. This is all fine and dany,
   but when we want to use an oscillator as a clean-up oscillator, the
   servo-loop with surpress much of the low-frequency/high-tau properties
   and replace that with that of the reference.

   Consider for instance that we have a LPRO rubidium and we want to use a
   clean-up oscillator to provide better phase-noise, what would be a good
   selection?

   While there is plenty of choices, it is a bit different from that which
   is relevant when considering it as a free-running oscillator. The white
   noise which dominated far-out would dominate, and only some of the
   flicker phase becomes relevant.

   I could easily get a OCXO of good quality, but really, what would be
   interesting choices? Have someone measured this enough to get a kind of
   rough idea at least?

   Cheers,
   Magnus


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