How to Read / Navigate via GPS

To: Irene <>, birding-aus posts <>
Subject: How to Read / Navigate via GPS
From: David McDonald <>
Date: Mon, 17 Apr 2000 21:38:04 +1000
Irene and others:

I strongly recommend Lawrence Letham, 'GPS Made Easy: Using global positioning 
systems in the outdoors', 2nd edition, Rocky
Mountain Books, Calgary, Alta, 1998. It provides general info on the GPS system 
and on GPS receivers, then has a number of
chapters, each a case study of actually using the GPS receiver in real field 
conditions, covering the many uses to which to tool
can be put. An excellent way to meet the all-too-common experience that Irene 

The book is readily available for $29.95; I've seen it in Paddy Pallin's and 
other outdoor stores.


Irene wrote:

> Hi everyone
> I few months ago I requested information on GPS units, Paul Taylor kindly 
> provided a useful response as to features to look
> out for, and I have now received my Magellan GPS 315.  I?ve started playing 
> with it and making my way through the manual.
> The manual however only explains how to display things on screens etc.  It 
> doesn?t actually explain ?how to navigate? or what
> some of the terminology means.  For example, it has several screens including 
> a compass and a depiction of a road but nothing
> about ?how to use? these screens to, eg, get to where you want to go.
> It is also full of terminology such as heading, bearing etc. with no 
> explanation of what these are. There even appears to be
> a difference between latitude/longitude in DEG/MIN.MM format and DEG/MIN/SEC 
> format.  For atlassing, is True North or
> Magnetic North the best GPS setting?  Etc. Etc.
> Rather than just use the GPS only to find latitude/longitude for a birding 
> atlas sheet (or Easting/Northing for record card
> for Atlas of NSW Wildlife under NPWS), I would like to learn more about the 
> other functions within the gadget.
> Can anyone please recommend a good but simple, plain English and inexpensive 
> book on the subject?
> Irene Denton
> Concord West, 12 km from Sydney city, NSW, Australia
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David McDonald
PO Box 1355, Woden ACT 2606, Australia
Tel: +61 2 6231 8904 (h); +61 2 6249 5618 (w)
Fax: +61 2 6249 0740

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