[time-nuts] 1PPS users?

Peter Reilley preilley_454 at comcast.net
Sun Dec 18 20:59:29 EST 2016

There was a discussion here a while ago about synchronizing radio 
telescopes that
were separated by some miles.   The 1PPS from GPS was suggested as a 

I am working on a project to do location by triangulation that uses the 
1PPS signal.
I would like to get better than the +-10 nS that the better receivers 


On 12/18/2016 6:16 PM, Bob Stewart wrote:
> One thing I've never really understood is who actually uses the high-quality 1PPS output from a GPSDO.  I have spent a lot of time, effort, and money on developing my GPSDO without a whole of thought to the user base.  It was just a quest for the best result I could obtain with a particular technology.  The frequency standard users was a no brainer.  Everyone who wants a frequency standard eventually understands they need to get a GPSDO, or an Rb, or a Cs.  And that's all I thought I had: a good frequency standard.  And then Tom prodded me a bit and showed me the shortcomings of what I was doing, and I did something about it.  So, if an NTP user can get his time fix directly from a noisy receiver, who actually needs a time-accurate, low jitter 1PPS pulse?
> Bob - AE6RV
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