shrug-l: GPS - Accuracy Considerations

[C. Henry Depew]

Greetings!
     There is a very interesting article on GPS problems in the July, 
2011 issue of "Power & MotorYacht" (of all places" starting on page 
34.  The impact of LightSquared broadcasts on GPS receivers may be of 
interest to you as well as the general discussion of different GPS 
coordinates from different GPS receivers.

C. Henry Depew
sisu26 at nettally.com