How to Evaluate Portable GPS Units
Global positioning system (GPS) technology has advanced dramatically, as has the availability and affordability of GPS units. Now, anyone can navigate on the trails, the road, or on the water. Today's GPS units are more sophisticated and accurate than older models. GPS units are available for specific uses. Many contain additional features such as two-way radios or cameras, making GPS units more than just a navigational tool. With so many choices available, it can be difficult to select the best device. Evaluation of a portable GPS unit begins with its intended use.
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Instructions
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Consider how you will be using the portable GPS unit. Think about what activities for which you will use the device, such as geocaching or hunting. Also, take into account the types of places where you will be using the unit, such as backcountry and remote areas.
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Decide on what additional features you may want. Some units have hunting calendars or photo navigation where you can navigate to geotagged photos. Geotagged photos contain coordinate information so that you can navigate to the place where the photo was taken.
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Decide on how much you want to spend. An important aspect of evaluating a GPS unit is weighing the cost versus what the product offers.
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Find out the length of the battery life of the unit. If you plan to use your GPS unit for long periods of time in remote backcountry, long battery life will be especially important.
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Find out what maps, if any, are preloaded on the device. Some GPS units store maps in internal memory. With other units, you may need to purchase additional mapping software and maps. Take this information into account as you evaluate whether the unit is within your budgeted amount.
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Observe if the unit has an electronic compass. An electronic compass allows you to determine your bearing while walking. When traveling in unfamiliar territory, an electronic compass is very handy.
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Look at the unit's display. Less expensive units may have black-and-white displays. For simple navigation, this may be adequate. However, a black-and-white display can make map reading difficult under low-light conditions, especially if you're using topographical maps.
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Notice whether the device has a touchscreen. A touchscreen simplifies the use of the unit. However, some users may find the screen gets dirty too quickly and requires frequent cleaning. This is more of a personal preference, but do take it into account when evaluating GPS units.
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Look into customizing features. The ability to add points of interest (POIs) to the map enhances its value, especially if you use the device frequently. Free, custom POI downloads are available at the Garmin website for compatible units.
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Tips & Warnings
Handle the device to get a feel for it. Note where the buttons or menu are found. Think about how easily it will handle in the field.
A GPS unit is not a replacement for a map and compass. A GPS unit shows your place in time, nothing more.
