[time-nuts] Mystery hp Ovens For Sale

Bob Camp kb8tq at n1k.org
Sun Jun 5 07:49:59 EDT 2016


Given the utter PIA that dividing things down used to be, running at 100 KHz is not a 
bad way to go. The R390 ran at 200 KHz and divided by two, but that’s an oddball. After
the fact they figured out that the approach really did not improve things. 

If you move up to a resonator a bit bigger than a grapefruit in size, you can improve things a bit.
The cost of that part will be a bit high. Given it’s weight, it’s not going to be very rugged. 
One or the other will rule it out in 99.999% of the applications. 


> On Jun 4, 2016, at 10:49 PM, Ian Stirling <is at opus131.com> wrote:
> On 06/04/2016 08:24 AM, Bob Camp wrote:
>> Not accurate, but at least a hand waving sort of number:
> Bob,
> It serves a crystal calibrator marker on each 100 kHz of a
> ten inch dial 600 kHz wide. It is good enough for the job,
> but not really in the time-nuts realm, except for the accuracy
> required.
> Ian, G4ICV, AB2GR
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