Re: "Don't rely on Garmin" - Garmin's words!


Peter Clinch Wrote:
> Andrew Brooks wrote:-
> One thing that Garmin told me is that the "Accuracy" figure quoted
> by the GPS refers only to the 2D position. This means that the
> Altitude reading is a bit useless. I've watched it give crazy values
> and without an accuracy value it might as well just give you random
> numbers!-
>
> Altitude does settle to something usable to a degree if you leave the
> machine running. But otherwise it is indeed basically useless. My
> house is about 55m above sea level according to the map. According to
> my eTrex shortly after firing it up and it getting a lock, I'm up to
> 20m
> under!
>
> But if GPS altitude was really up to much then Garmin wouldn't spend
> money to include a barometric altimeter in the Geko 301 and eTrex
> Summit.
>
> Pete.
> --
> Peter Clinch Medical Physics IT Officer
> Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
> Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
> net p.j.clinch@xxxxxxxxxxxx http://www.dundee.ac.uk/~pjclinch/

Hi

Don't understand this - I've been using an eTrex for several years now
extensively in the Lakes, a fair bit of Scotland and occasionaly
Wales.

Grid ref' accuracy is incredible + alt' accuracy in all weathers fine
to fould is blinding - normally with a few metres of the map spot
height.

Perhaps I got lucky and have a super-accurate unit!

Cheers

Nick


--
nickl
.

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