[time-nuts] HP 100D FS [WAS: HP 105D FS]
csteinmetz at yandex.com
Sun Apr 9 15:04:38 EDT 2017
> The HP oscillator is a 100D Low Frequency Standard..
> Sorry for the brain fart.
For a bit more information on the 100D (and 100C), see the October, 1949
Hewlett Packard Journal:
Note the accuracy and stability specs:
ACCURACY: Average stability is within approximately two parts per
million per week.
STABILITY: Within one part per million over short time intervals, such
as required to make a measurement.
The price in 1949 was $600 f.o.b. Palo Alto.
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