[time-nuts] Ventilation of HP 58503A GPS time & frequency reference receiver

Dr. David Kirkby (Kirkby Microwave Ltd) drkirkby at kirkbymicrowave.co.uk
Sat Dec 13 10:18:41 EST 2014

On 13 December 2014 at 11:13, Dr. David Kirkby (Kirkby Microwave Ltd)
<drkirkby at kirkbymicrowave.co.uk> wrote:
> I have a counterfeit 58503A which appears to run warmer than I would
> have expected. I'm not sure if this may be by design, or if there is a
> fault, or maybe there is simply not enough ventilation slots in this
> fake case. Please see the attached pictures, and let me know if you
> think that it is reasonable.

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


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