About Handheld GPS Systems
A wide array of electronics incorporate Global Positioning System (GPS) technology, such as vehicles and mobile phones. Handheld GPS devices, though, are dedicated solely to navigation and are most often used by hikers, climbers and mountain bikers. Consumers interested in purchasing a handheld GPS device should first learning how GPS technology works and become familiar with the capabilities and features of most handheld GPS devices so that they can find a device that best suits their needs.
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Function
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All GPS devices use the Global Navigation Satellite System created and maintained by the United States Department of Defense to triangulate a user's location via satellite. The primary functions of handheld GPS devices, also known as "receivers," are to provide users with the accurate coordinates of their current location and to help them navigate trails and roads using coordinates users input into the device.
Benefits
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The most significant benefits of handheld GPS receivers are their portability and durability. While other GPS devices, such as those used in cars, are usually more powerful, their size and power requirements make them impractical for use in outdoor activities. Other handheld electronics that incorporate GPS technology, such as mobile phones, are not manufactured for vigorous outdoor use, as are handheld GPS receivers, and are used only for road navigation.
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Features
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Most handheld GPS receivers are durable and waterproof. All are equipped with a screen, with some offering color screens, and most usually have a backlight for easy use at night. All handheld GPS receivers also have a set amount of memory space for storing maps and other information. One of the most important features of a handheld GPS receiver is its antenna, which is receives signals from the satellites. Antennas can be external or internal and may be a flat-patch antenna or the more advanced quadrifilar helix antenna, which is ideal for navigating areas with dense trees. The most expensive models of handheld GPS receivers will have more features, such as greater memory, larger color screens, and more add-ons.
Considerations
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Before purchasing a handheld GPS receiver, consumers should determine what, if any, add-ons are included with the product. Most do not include cords, accessories or additional mapping software that may be necessary for optimum use. More expensive handheld GPS receivers will include add-ons, such as hardware and software required for using the receiver for road mapping and traffic purposes, and may also have Bluetooth capabilities.
Warning
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Relying solely on a handheld GPS receiver when hiking or biking in vast areas can be dangerous. These devices should be used only as one part of a larger navigation plan. When planning any outdoor activity that carries the risk of getting lost, outdoorsmen should always bring a printed map and compass in case the handheld GPS receiver malfunctions, becomes damaged, or runs out of battery power.
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Resources
- Photo Credit Photo courtesy: Dina Simmonds
