The PN-20 makes your map and compass obsolete.
The DeLorme PN-20 Earthmate is a handheld GPS unit. Featuring a color display and a rugged exterior, it is equally at home in the car or on the trail, thanks to its support for both topographical hiking maps and standard road maps. The Earthmate contains a number of thoughtful features to help you know where you are and avoid getting lost.
Weight and Case Specifications
Designed for portable use, the PN-20 measures just 5.25 inches tall, 2.43 inches wide, and 1.5 inches deep. It also weighs just one-third of a pound. Its case meets the IPX-7 standard for waterproofing and is also designed to be impact resistant.
Power Requirements
DeLorme ships the PN-20 with a pair of regular AA batteries which power it. It draws 165 milliwatts when operating at full power, which drops down to 55 milliwatts when the device is powered on but left in its sleep mode.
Receiver Functions
The DeLorme PN-20's 12-channel receiver pulls down signals from GPS satellites to find the device's position. It also uses WAAS (Wide Area Augmentation System) technology to allow it to provide more accurate location data than a traditional GPS receiver. Although suitable for use in outdoor open-space areas, DeLorme designed the PN-20 to be able to handle the kind of interference and weak signals that are also prevalent in urban areas, with signal tracking down to -145 dBm.
Memory and Storage
Onboard flash memory of 75 megabytes comes standard with the PN-20, in addition to its SD card slot, which supports both regular SD and high capacity SDHC cards. With its memory, the PN-20 can not only store downloaded maps, but it also tracks, waypoints and even stores routes.
Features
The PN-20 starts up quickly, with full power within 3 seconds from a "hot" start and 38 seconds from a warm start. It can track satellites when it is moving as fast as 1000 knots and operate in temperatures ranging from -20 to 75 degrees Celsius (-4 to 167 degrees Fahrenheit). DeLorme ships it with TopoUSA software, which is a detailed topographic and street map of the entire USA, and preloads its memory with a basemap of major roads and highways throughout the world.
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