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Navigating the GPS Market |
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GPS units are more than just nifty gadgets; they're time-saving, sometimes life-saving, devices. There are basically two kinds of GPS: those intended for use in a vehicle, and those intended for use outside of a vehicle (hiking, hunting, orienteering, etc.). A "hiking GPS" will emphasize portability and being able to save complex new routes; a vehicular GPS will focus on hands-free operation and helping you navigate previously defined routes.
For a "hiking GPS," the following features are essential:
1) A 12 channel parallel receiver system allows you to get a reading even when tree cover or mountainous terrain make it impossible to communicate with some satellites.
2) A screen that can be read easily under many different conditions, especially bright sunlight.
3) Sufficient water resistance to be submerged without suffering any damage, and the ability to survive a short drop.
4) The ability to save routes, so that you can keep your favorite trails in memory.
5) The ability to store at least 500 waypoints (markers along the routes); paths are not always well marked, so it's better to have too many points than too few.
6) Lightweight and comfortable enough to carry in a pocket, on a belt, or the strap of a backpack.
For a GPS to use in your vehicle, look for these features:
1) Address to address routing, so that all you have to do is key in your starting point and destination.
2) A 12 channel parallel receiver system to get a reading even the sky is partially obscured by buildings, trees or terrain.
3) Voice prompts for heads-up, hands-free use.
4) Detailed road maps of your area and anywhere else you plan on using it; these may come standard or as add-ons.
5) A secure dashboard mount that allows you to position the GPS so that you can easily see the screen from the driver's seat.
Most GPS units will come with additional "bells and whistles," some of which are very nice to have. However, to get a great deal, make sure the unit you purchase has the essential features listed, and then only pay for extras that you really want and know you will use.
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