Re: GPS systems? | Forum — The Modern Antiquarian

Hob Nov 23, 2006 23:45:00

Replying to FourWinds

It could be the E-trex effect. Set to American system of calculating the curvature of the earth (or somesuch). Mine consistently produced an error of about 50m east, 200m south for yonks until I worked out how to set it to the same system the OS uses.

My E-trex has the compass feature you mention above, and it's not actually all that hot. It only works if you're moving. Apart from that. I think it's fine, got me to a few small panels of RA in the middle of heather moorland I'd probably never have otherwise found. One of the best things about it is that it lends a sense of comfort on foggy nights on moors. Less chance of getting lost as you can always retrace your steps.

FourWinds Nov 24, 2006 06:35:49

Replying to Hob

The Electronic Compass on Garmins provides directional information while you're standing still. My eTrex has a software compass that only works while you are moving. Take a look at the Garmin Summit, for example, which not only has an electronic compass, but also a barametric altimeter to give better altitude readings.

The Eternal Nov 25, 2006 02:42:36

Replying to Hob

Mr Hob,

Hob wrote:

Less chance of getting lost as you can always retrace your steps.

Yes, it's not so bad if it lets you retrace your steps. The recent tragedy in the Scottish hills highglights the need to be able to retreat quickly, although I'm not blaming GPS for that.

Regards,
TE.