[time-nuts] Reeeely long term HP 5065A drift rate (13 year!)

Jim Palfreyman jim77742 at gmail.com
Mon Jun 29 19:47:37 EDT 2015

Did you take into account difference in height (if it was significantly

On 30 June 2015 at 03:46, <cdelect at juno.com> wrote:

> I recently had a unit come in for repair that I had sold 13 years ago.
> The owner never did ANY adjustments on the unit.
> After the repair (which would not have affected the frequency) and before
> aligning the unit I decided to check and see how far it had drifted in
> the 13 years.
> Did a run against an HP 5071A and the frequency offset is 2.1X10-11th
> best case and 4.1X10-11th worst case.
> This gives an average of  1.65X10-12th to 3.15X10-12 per year!
> Pretty amazing!
> Cheers,
> Corby
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