Using the thunderbolt here.

I only asked because a co-worker spotted the altitude and thought it was 
"wrong" for boulder.

-----Original Message-----
From: time-nuts [mailto:[email protected]] On Behalf Of Mark Sims
Sent: Thursday, June 9, 2016 10:56 AM
To: [email protected]
Subject: [time-nuts] GPS altitude somewhat wrong?

You have to be careful with a lot of modern GPS receivers.   Many implement 
some sort of "position pinning".   If they do not detect significant movement,  
they either stop updating the coordinates  or heavily filter it...  you do not 
see the actual computed location.  On some receivers you have to move well over 
10 meters before the position un-pins.
----------------------
> CEP(95) of 1.5 meters over 1,000 seconds.                                     
>   
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