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[aprssig] gps accuracy?

Chuck Gooden Chuck.Gooden at comcast.net
Mon Nov 23 16:55:18 UTC 2009


Was it Plus or minus 11 (3.35 m) feet?  If it was it pretty good IMHO.  
Which Garmin were you using and how much accuracy do you need?

Wes Johnston, AI4PX wrote:
> Can anyone say what the accuracy of the GPS system is for a civillian 
> grade CA receiver outside the USA?  With WAAS enabled, my garmin 
> "told" me it's accuracy was 11 feet (3.35m).  I had occasion to test 
> it against three known points and it was actually off the mark by 16 
> to 21 feet (4.8 to 6.4m).  Never the less, it got me thinking about 
> the 1990's when selective availability was on and I wonder if SA is on 
> outside the USA.... particularly in the middle east.
>
> -- 
> Wes
> ---
> God help those who do not help themselves.
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