Re: Elevation estimates - more


"Paul Saunders" <pvs1@xxxxxxxxxxxxxxxxxxxxx> wrote in message
news:nrmdnVj-YMWMa2fUnZ2dnUVZ8rudnZ2d@xxxxxxxxxxxx
Mike Clark wrote:
"Mike Mason" wrote:

No disappointment that Garmin's advertising as far as the barometer
goes is basically a lie

I can't remember exactly what was claimed in the advertising but I
own a Summit, a Geko301 and a Vista HCx. I've been more than pleased
with the performance, particularly the autocalibration mode, which
seems to work very well under most conditions.

Same here.

As you've noted, the downside of that sensitivity and resolving power
is that it records small pressure fluctuations in gusty environments.
However if it wasn't as sensitive you wouldn't be able to resolve
small altitude differences in still air conditions.

Exactly. I suppose the real question is, how often do you go out walking
in very windy conditions? If you do so often enough that it's a real
problem then maybe you should buy a non-altimeter GPS instead/as well?

It's a pity that you can't switch between altimeter and non-altimeter
mode. No reason in theory why that shouldn't be possible. It would be even
better if it recorded two tracks simulaneously, one altimeter track and
one GPS elevation track.

Paul
--
http://www.wilderness-wales.co.uk
http://www.wilderness-images.co.uk
http://www.uk-rec-walking.co.uk
http://www.vanishingripples.com
http://www.monochromemagic.com

Quick look at 2008/2009 indicates that I did 47 walks in and around the Lake
District. For me 2008/2009 was a poor year for weather as a quick check on
my photographs indicates that. Most of those walks were done in poor
conditions with about a third with wind having some impact on the walk.

My ethos on walking is go out and do something whatever the weather. I will
change route to suit the weather but only if in my estimation the weather is
so bad as to make the walk inherently dangerous.This sounds and probably is
arrogant but if I were to walk only when the weather is good then I wouldn't
do much walking in this country.

I do have an Extrex Vista, which is less prone to being affected by the wind
but is nowhere near as precise/accurate (which) as the 60cxs

Garmin's advertising for the 60cxs includes the statement 'Barometric
altimeter provides extremely accurate elevation data'.

Garmin's advertising for the Vista includes 'The Vista's barometric
altimeter pinpoints your precise altitude'.

Both of these statements are not qualified in any way

Mike


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Relevant Pages

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