Less than 4 satellites and the altitude is greatly affected. Just in case
you wanted to know where you were in the vertical plane.

tim o'brien

> >Andrew, I don't think you'd find it a satisfactory speedometer for a car
>--
> >it doesn't measure speed directly at all
>
>Yes, I hadn't thought of that. Also it depends on how many satellites are
>line-of-sight. If less than 3 the locational fix can be wildly inaccurate,
>hundreds of meters out.
>
>Andrew
>

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