GPS units

Subject: GPS units
From: (Desmond Allen)
Date: Sat, 19 Apr 1997 20:08:13 +0900
There was some recent discussion of GPS units on the list which I only got
the tail end of so  I hope this isn't asking for duplication.
I have a Garmin GPS 40 which is occasionally handy for finding where I am
in SOUtheast Asia. However, it needs an almost clear sky - it won't pickup
satellites through thick cloud and certainly not through tree leaves. It
also needs a pretty wide horizon to triangulate properly unless the
satellites are in an auspicious configuation. Also if there is a lot of
background "noise" it cannot work out where it is even on a clear day with
wide horizons - eg near the centre of Tokyo. It will only monitor postions
if it continues to have  good view so as a handheld instrument that is
impossible - you have to hold it out in front of you. I can imagine that in
desert/semidesert areas it might come into its own but in my experience,
for me , it was  a waste of money. However, if I can work out how to rig up
a portable aerial - or someone on the list can tell me where I have been
going wrong - maybe I can get better use out of the thing.


Des Allen
 Machida Shi, Japan

<Prev in Thread] Current Thread [Next in Thread>
  • GPS units, Desmond Allen <=

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the birding-aus mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU