Reduced accuracy on Sept 11th/2009

Mar 10, 2008
TomTom Model(s)
TomTom 930
Just an FYI. GPS may be unreliable in certain parts of the world for short periods on September 11 as a result of a routine Delta-V maneuver with satellite #52 (PRN-31).

The Navigation Information Service of the U.S. Coast Guard Navigation Center issued a High Horizontal Dilution of Precision (HDOP) Advisory, reporting that GPS users may experience a temporary degradation in GPS reception in parts of the southwest and central United States from 13:02 UTC to 13:23 UTC on September 11.

The following areas in the United States may be affected:

Southern Nebraska
Southwestern Arkansas
Eastern Texas
Western Louisiana

Note of much concern to TomTom users of highway PND's, but thought I'd mention it in case anyone notices a lower accuracy figure or unusual vehicle icon placement at intersections or when parallel roads are in close proximity.


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