[time-nuts] GPSDO Alternatives

Bob Camp lists at rtty.us
Fri Dec 7 02:07:59 UTC 2012


If all you want is a "something" locked to a GPS:

Take the pps from the GPS and hook it to an AD9548. You probably will need a 50 cent CPU to set up the registers.  No muss, no fuss,  nothing to invent or design.

Weather it does what you need to do is an entirely different question. Without a defined objective / need / performance goal this could go on for a couple hundred years…..


On Dec 6, 2012, at 7:43 PM, Chris Albertson <albertson.chris at gmail.com> wrote:

> What if the OCXO had a sine wave output and then you used the PPS leading
> edge to gate the sine wave to a sample and hold.  then the sample is
> measured by the Arduino's ADC?  I think(?) you get a 10-bit ADC or is it
> 8-bits.  The problem is the required speed of the sample and hold, maybe
> not easy to build
> -- 
> Chris Albertson
> Redondo Beach, California
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