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

Bob Camp kb8tq at n1k.org
Sat Dec 13 21:31:16 EST 2014


You see a lot of surplus HP gear with the feet pulled. That was pretty standard when gear was rack mounted.


> On Dec 13, 2014, at 10:18 AM, Dr. David Kirkby (Kirkby Microwave Ltd) <drkirkby at kirkbymicrowave.co.uk> wrote:
> 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
> different.
> Dave
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