[time-nuts] HP5334B with 10544 OCXO

[Rick Karlquist]

ed breya wrote:
> Could it be that since they are much older (on average) than the
> 10811s, that (if they've been running) they would have much more
> accumulated time, so in a more stable part of the long term drift curve?
>
> Ed
>

This argument is frequently advanced, however there is no guarantee
that the aging continues to improve with age.  Also some 10811's
now go back 30 years, so its not like they are a lot newer than
10544's.  It could be just as important what year the oscillator
was made, since the quality varied over time.  It gradually improved
for a while, then went downhill when the experts retired.

Rick