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    Re: Accuracy of consumer-grade GPS/GLONASS nav.equipment?
    From: David Pike
    Date: 2017 Apr 5, 13:47 -0700

    John Howard you wrote : I do not think WAAS is full time for everywhere.

    There are various systems world wide.  WAAS is the US one.  Together they cover quite a bit of the Earth.  It's all explained rather well here http://www.sxbluegps.com/technology/sbas-made-easy/ with a rather nice coverage chart towards the bottom and a little bit about lower spec receivers at the very bottom.  DaveP

       
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