Patrick,
I have not seen any documentation that could translate the satellite count
to an accuracy figure in feet or meters.
The number of satellites isn't the main factor in accuracy, it's the sat geometry. A position fix with 4 birds spaced evenly and at a higher altitude will give a better position than 8 birds near the horizon bunched around the same area of the sky.
That being said, once SA was turned off in 2000, I've rarely had a position error greater than 20 feet, even with my older Garmin II+. My HCx, easily get under 10' most times.
73
Clear Skies
Rick Tejera
Editor SACnews,
Public Outreach Coordinator
Saguaro Astronomy Club
Phoenix, Arizona
www.saguaroastro.org
K7TEJ
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