DATASCAPE GARMIN

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DATASCAPE

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ACCURACY

100 meters:	Accuracy of the original GPS system, which was subject to accuracy degradation under the government-imposed Selective Availability.
15 meters:	Typical GPS position accuracy without Selective Availability.
3-5 meters:	Typical differential GPS (DGPS) position accuracy.
< 3 meters:	Typical WAAS position accuracy (No WAAS service in SA)

Follow these links for further information

GPS Booklet	Guide to the GPS Service
GPS Applications	What use is it
GPS Glossary	An explanation of terminology & acronyms

What to get

That's not so easy to answer, given the wide range of GPS models available.

It helps to decide what you will use your GPS for most.

Flying ? Boating ? Driving ? Hiking ? Biking ? Camping ? Game Viewing ?

When you get past that question, you'll find further options.

It requires time and patience to work out the best system for YOU.

They're all excellent and they'll all add value to your travels, but getting the right unit will really prove even more satisfying. Take the time to understand the terminology and functionality. Once you think you know which model you'd like, you can download the user manual from the Garmin website and finalise your choice. I've included Garmin's comparison links to help.

See the download page for a link to Garmin manuals.

See the comparison links on the main Garmin page to see the differences between the units you're thinking about.

Think about battery endurance time if you're going to be away from mains or 12volt power, think of screen size if you're driving, think of a colour display if you're flying or boating , number of waypoints, ability to download new maps - you'll get the idea. Maps require memory. More memory = more maps you can store.

I use the GPS III+ as a cost effective good all round GPS for road (upgradeable moving map), flying (external antennae) and geo-cache (500 waypoints & excellent track log) use.

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Last modified: October 20, 2006