[time-nuts] Ventilation of HP 58503A GPS time & frequency reference receiver
blm-ubunet at slingshot.co.nz
Sat Dec 13 14:08:07 EST 2014
On Sat, 2014-12-13 at 15:18 +0000, Dr. David Kirkby (Kirkby Microwave
> I just noticed. Since there are no feet on this, there is no way any
> air can get into the slots in the base!!!! The oven was running too
> hot for me to touch - I doubt that is normal, but perhaps others no
Pull the rear rubberized plastic bump stop off the case & fit it up the
As long as the OCXO operates below its turning point it has thermal
control. Only need to dissipate the non-heating power, that sets the max
Some OCXOs are quieter running in high temperature ambient still air.
All are degraded by changes in thermal load.
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