[time-nuts] The 10811 double oven mystery

[Richard (Rick) Karlquist]

On 4/8/2020 12:53 PM, Jarl Risum wrote:
> I have been puzzled by a mistake which has been published recently on this
> list and elsewhere as well. It concerns the operation of the HP 10811
> double oven TCXO used in the HP Z3801 GPSDO.
> 
> It is claimed that the outer oven is only in use during start up or during
> extremely low ambient temperatures and is not operating during normal
> conditions. This is not correct.
> 
> Jarl
> _______________________________________________

How did you determine that the statement is not correct?
There will be some ambient temperature at which the
outer oven heater power reaches zero and therefore
it becomes inactive above that.  All you are arguing
about is whether the shutdown temperature is correctly
described in terms of "extremely low" and "normal",
whatever those adjectives mean.

Rick