[time-nuts] GPSDO control system
Tom Van Baak (lab)
tvb at leapsecond.com
Sun Mar 23 20:58:25 EDT 2014
Rule of thumb:
- really good OCXO have frequency drift rates of 1e-10 to 1e-11/day
- common Rb have frequency drift rates on the order of 1e-11/month
- Cs do not have frequency drift
- H-maser drift rates are 1e-15 to 1e-16/day
> On Mar 23, 2014, at 4:32 PM, Charles Steinmetz <csteinmetz at yandex.com> wrote:
> Hal wrote:
>> Does anybody have data on the drift of Rs or Cs?
> Tom has some data posted at leapsecond.com (for H-masers, too).
> John Miles has some at ke5fx.com.
> John Ackermann has some at febo.com.
> I encourage you to roam widely over all three sites -- you will be well rewarded.
> Best regards,
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