[time-nuts] Another "atomic" clock question

Bob Camp lists at rtty.us
Mon Mar 3 21:05:38 EST 2014


So I can use the scrap (zero value) 5 MHz 3rd OT HC-40 package SC’s that are sitting in a pile in the basement right ?


On Mar 3, 2014, at 8:47 PM, Chris Albertson <albertson.chris at gmail.com> wrote:

> On Mon, Mar 3, 2014 at 4:51 PM, Charles Steinmetz <csteinmetz at yandex.com> wrote:
>> What you are proposing is a disciplined oscillator using the oven setpoint
>> as the control input.
> What I want to try is building a GPSDO for say $25 for everything
> except the GPS.
> A fun contest would be to adopt some low budget, like $20 and see who
> can make the best ADEV numbers.  A rules would have to be only fair
> market prices for components, not fair if you buys $1 rubidium clock.
> It would have to be prices that anyone could get any day.   Or you fix
> the task and lowest priced design wins.  Say the test is "a lab 10MHz
> reference good to 11 digits" then see who can do the job at lowest
> cost.
> Thanks that schematic looks to be the exact one I was looking for,
> I've got most of the rest of what's needed to connect it to a GPS.
> -- 
> Chris Albertson
> Redondo Beach, California
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