Memory, Routes and Trackpoints
Your GPS receiver's Memory
or RAM (Random Access Memory) is measured in MB. You
can find units with Memory ranging anywhere from 1MB
to around 16MB and more. As a general rule, the more
expensive units have more Memory. The system's Memory
is used to store the waypoints we mentioned above, as
well as routes and trackpoints. The higher the Memory,
the more of these you can save. You can add maps to
your GPS, which take up some
Memory. If you plan to store a lot of maps, get a unit
with more Memory. And yes, with many GPS
units you can even download maps from the Internet.
Batteries
Most GPS receivers come with
"AA" batteries. The important thing to remember about
batteries is that your unit is only as effective as
its set of batteries. So buy rechargeable batteries
or keep an extra set on hand for those long trips!
Receiver Type
Before you buy, think about what you'll mainly be using
the GPS receiver for. If you
think you'll just be taking it along on business trips
or long drives, the ruggedness of your unit may not
be that important. But if you are an outdoors enthusiast,
think about buying something that you can take along
in the mountains, into the forest and on boat rides
across the river. Some units are weatherproof and waterproof,
and built for a more rugged trek.
Other Features
All GPS receivers come with
a host of cool features. More sophisticated models come
with more features, naturally. You can expect your receiver
to display Sun/Moon positions, Sunrise/Sunset times,
and Satellite Status.
There's a GPS receiver for
every adventure, whether it's on rugged terrain or in
the city. Good luck!
Next:
GPS Global Positioning Systems
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