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Get Lost - Precisely - With A GPS Receiver
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Written by Brian J. Sero   
Monday, 09 March 2009
For about $150, you can buy a similar gizmo, a global positioning system (GPS) receiver, to find out just where on earth you are. Why on earth you'd need it is another question.

GPS technology relies on 24 satellites orbiting 10,900 miles up and transmitting geographical data. A GPS receiver "sees" several satellites and triangulates to find its latitude, longitude, and elevation.

We tested four of the low-priced GPS receivers being pitched to hikers and bikers. Three are handheld, with screens that show coordinates and other map data: the Eagle Electronics Accumap Sport, $599, the Garmin GPS 38, $149, and the Magellan Trailblazer XL, $280. The Eagle has the most elaborate maps and is fastest. The DeLorme Tripmate, $150, works with software (included) and a laptop computer, and can show maps as you drive.

Five testers carried the units to Belize, San Francisco, Las Vegas, Washington, D.C., and Death Valley, Calif., and were generally impressed. But it can take up to 15 minutes to get the first reading. Buildings, mountains, or trees can block the satellite transmissions, rendering the units inoperative.

GPS is offered in some cars from Cadillac and Lincoln. Many boaters also use GPS. But hikers will still need tried-and-true low technology: a compass and detailed maps.
Last Updated ( Monday, 09 March 2009 )