[time-nuts] Best Chance GPS module

Bob Camp kb8tq at n1k.org
Sun Dec 4 13:45:43 EST 2016


A 12 hour survey done with WAAS turned on is likely to be better than one with WAAS turned off. 
How good a 96 hour survey with WAAS on and off is something of a toss up.


> On Dec 4, 2016, at 1:35 PM, Chris Albertson <albertson.chris at gmail.com> wrote:
> On Sun, Dec 4, 2016 at 9:16 AM, Mark Sims <holrum at hotmail.com> wrote:
>> For some unmentioned reason Ublox recommends disabling WAAS for precision
>> time applications.  Doesn't make much sense to me....
> It turns out that your self-survey position is much better then a WAAS
> correct position. WAAS is about 1.5 meters I bet a 12 hour self survey is
> about 0.5 meters
> Are we still talking about NTP?  If so this kind of stuff is lost in the
> noise and will never show up on your system clock.
> -- 
> Chris Albertson
> Redondo Beach, California
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