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B07T7KKNG3 Availability: Currently unavailable Score: 1000.000 Category: Electronics Rating: 4.3 Votes: 46 Find similar products Garmin eTrex 22x: Rugged Handheld GPS with 16GB Camping & Hiking Bundle 010-02256-00. Explore Confidently with the Reliable Handheld GPS2.2” sunlight-readable color display with 240 x 320 display pixels for improved readabilityPreloaded with TopoActive maps with routable roads and trails for cycling and hikingSupport for GPS and GLONASS satellite systems allows for tracking in more challenging environments than GPS alone8 GB of internal memory for map downloads plus a microSD card sloteTrex 32x adds a 3-axis compass and barometric altimeterBattery life: up to 25 hours in GPS mode with 2 AA batterieseTrex 22x and eTrex 32x offer the same ease-of-use, durability and affordability that the eTrex handheld GPS series is known for - along with preloaded TopoActive maps. These devices are perfect for ATVs, bicycles, boats or hiking.See the WayeTrex 22x and 32x offer enhanced 2.2”, 65K color, sunlight-readable displays. Durable and water resistant, these handhelds are built to withstand the elements.Explore the TerrainThe eTrex 22x and 32x handheld devices come preloaded with road-routable TopoActive maps that feature streets and trails so you can take the journey off the grid. Now you can know your surroundings - such as waterways, natural features as well as buildings, international boundaries and more. You can also find thousands of points of interests, including shops, restaurants, universities, car parks and accommodations.Keep Your FixThe eTrex series uses both GPS and GLONASS satellite systems so the receiver has the abilit.	B000JEXXVK Availability: Currently unavailable Score: 9.615 Category: Electronics Rating: 3.5 Votes: 70 Find similar products Garmin eTrex Legend Cx Waterproof Hiking GPS. Product Description The eTrex Legend Cx is a versatile, pocket-sized handheld mapping product ideal for both marine and outdoor use. It provides a bright, sunlight-readable color TFT display and includes a 32MB microSD card for storage of optional map detail. Garmin preprogrammed microSD cards can be purchased, providing detail for Topo, BlueChart, Fishing Hot Spots, Minnesota LakeMaster Promaps and European streets. The 64MB microSD card can also be loaded with data from MapSource products like BlueChart, U.S. Topo 24K, Minnesota LakeMaster Promaps and City Navigator. Fast USB connectivity makes loading charts and maps quick and easy, while navigation instructions can be shared with repeaters, plotters, and autopilots using NMEA protocols through the dedicated serial port. Amazon.com Amazon.com Product Description With the Legend Cx, Garmin has updated a much-loved device with expandable memory on a microSD card so you can load optional map data for your hiking, hunting, and other outdoor excursions. Add to that a bright, full-color TFT display, automatic routing, and long, 36-hour battery life, and you've got a great companion for your next outdoor or boating adventure. Compass indicates direction. View larger . Displays nearby attractions. View larger . The Legend Cx features a bright color screen, 36 hour battery life, microSD card maps, and more. You can use the Legend Cx's memory card slot with preprogrammed microSD cards from Garmin (sold separately) that provide topographic maps, city streets, and nautical charts. In fact, the unit is compatible with most Garmin MapSource products, including BlueChart, City Navigator, U.S. Topo 24K, and U.S. Topo and Recreational Lakes with Fishing Hot Spots. The unit comes preloaded with an Americas autoroute basemap that provides automatic routing capabilities, including highways, exits, and tide data. You can even get turn-by-turn directions when you're driving, and an integrated trip computer provides odometer, stopped time, moving average, overall average, total time, max speed, and more. As on all eTrex units, the primary controls are located on the side of the unit, so you can operate it with one hand. An innovative rocker switch on its face makes inputting data easy, and with it you can scroll through menus or pan the map page. Fast USB connectivity makes loading charts and maps quick and easy, while navigation instructions can be shared with repeaters, plotters, and autopilots using NMEA protocols through the dedicated serial port. Additionally, the case is water resistant to IEC 60529 IPX7 standards (can be submerged in one meter of water for 30 minutes). Another key feature of the Legend Cx is the 10,000-point automatic track log; 20 saved tracks (500 points each) let you retrace your path in both directions. There's also a large-numbers option for easy viewing, as well as a dual-position display mode. Lastly, the unit includes built-in celestial tables for best times to fish and hunt, plus sun and moon calculations. If you like the features of the Legend Cx but require an electronic compass and a barometric altimeter, check out the Garmin eTrex Vista Cx . What's in the Box Legend Cx unit, 32 MB microSD card, USB interface cable, MapSource Trip and Waypoint Manager CD, lanyard, owner's manual, and quick-start guide.
B0002VQ3TE Availability: Currently unavailable Score: 8.475 Category: Electronics Rating: 4.7 Votes: 5 Find similar products Garmin eTrex 1.1-Inch Portable GPS Navigator. Product Description All the power of a 12 parallel channel GPS receiver in a palm-sized package / Waterproof / Stores up to 500 waypoints All five buttons are placed on the sides, for simple, one-handed operation that doesn't obstruct your view of the display Bright yellow case makes it easy to locate in the boat or backpack And the eTrex is waterproof, so a splash or dunk is not a watery grave for the eTrex The high-performance, GPS receiver runs 18 hours on two AA batteries Even under canopy forest conditons, the eTrex maintains a tight satellite lock Stores up to 500 waypoints with graphic icons Exclusive TracBack feature provides a reverse course home Amazon.com The Garmin eTrex Adventure Pack is a must for campers, hunters and mariners alike. Besides its small size, you will quickly notice the sleek design of the eTrex. All buttons are located on either side of the unit, allowing for simple, one-handed operation that won't obstruct your view of the display. In fact, the eTrex features only five operator buttons for the ultimate in user-friendly design. The receiver literally fits in the palm of your hand. Thanks to its bright yellow case, the eTrex will be hard to misplace and easy to find in any boat or backpack. The eTrex is completely waterproof so it can take an accidental splash or dunk in the water and still continue to perform. Inside the eTrex, you will find the proven performance of a 12-parallel-channel GPS receiver that will run for 22 hours on just two AA batteries. The eTrex will store up to 500 user waypoints with graphic icons and boasts Garmin's exclusive TracBack feature that will reverse your track log and help you navigate your way back home. In addition, the eTrex uses animated graphics that will help you identify your marked waypoints quickly and easily. What's in the Box eTrex GPS receiver, wrist strap, user's guide, quick reference guide, and instructional video.	B000CSQRYS Availability: Currently unavailable Score: 8.264 Category: Electronics Rating: 4.2 Votes: 193 Find similar products Garmin GPSMAP 76CSx Waterproof Hiking GPS (Discontinued by Manufacturer). Product description Refreshing a GPS Standard The GPSMAP 76CSx is a refreshing upgrade of the GPSMAP 76CS, one of our most popular models for outdoor and marine use. This unit features a removable microSD card for detailed mapping memory and a waterproof, rugged housing. The microSD card slot is located inside the waterproof battery compartment. Users can load map data and transfer routes and waypoints through the unit?s fast USB connection. In addition, this unit features a new, highly sensitive GPS receiver that acquires satellites faster and lets users track their location in challenging conditions, such as heavy foliage or deep canyons. The GPSMAP 76CSx also incorporates a barometric altimeter for extremely accurate elevation data and an electronic compass that displays an accurate heading while standing still. Considered the mainstay among serious outdoor enthusiasts, the GPSMAP 76CSx and GPSMAP 76Cx offer a large color TFT display and turn-by-turn routing capability. These units also float when dropped in the water. Each unit comes with a blank 128 MB microSD card. Owners of these new x-series handhelds can also purchase new microSD cards that are pre-loaded with MapSource Topo and inland lake maps, BlueChart marine cartography, and City Navigator street maps. Amazon.com Amazon.com Product Description Aimed squarely at boaters and marine users, the Garmin GPSMap 76CSx ispacked with features that seasoned mariners crave. The 7.6-ounce 76CSx now features an insanely accurate, high-sensitivity GPS receiver by SiRF that tracks your position even in tree cover and canyons. Plus, you get a bright, sunlight-readable color TFT display and an included a 128 MB microSD card for storage of optional map detail. Add all that to the 76CSx's integrated barometric altimeter and electronic compass, and you've got a highly capable unit. Simply put, the 76CSx is ready to take you anywhere on the water. Landlubbers will find much to like about this unit, too, as it packs great GPS mapping capabilities into a compact device. The 76CSx features a removable microSD card for detailed mapping memory and a waterproof, rugged housing. View larger . The GPSMap 76CSx features the powerful SiRF GPS navigation chip, as well as an electronic compass and a barometric altimeter. The trip computer provides odometer, stopped time, moving average, overall average, total time, max speed, and more. You can use the 76CSx's memory card slot with preprogrammed microSD cards from Garmin (sold separately) that provide topographic maps, city streets, and nautical charts. In fact, the unit is compatible with most Garmin MapSource products, including BlueChart, City Navigator, U.S. Topo 24K, and U.S. Topo and Recreational Lakes with Fishing Hot Spots. The unit comes preloaded with an Americas autoroute basemap that provides automatic routing capabilities including highways, exits, and tide data. There's also a preloaded marine point database. You can even get turn-by-turn directions when you're driving, and an integrated trip computer provides odometer, stopped time, moving average, overall average, total time, max speed, and more. The 76CSx's 2.6-inch, 256-color TFT color display is designed to present mapping and trip information clearly and accurately in any lighting conditions. Plus, the case is lightweight, rugged, and water resistant to IEC 60529 IPX7 standards (can be submerged in one meter of water for 30 minutes). Marine users will also like the fact that the 76CSx floats. When using two AA alkaline batteries, you'll get up to 20 hours of battery life from the unit. Another key feature of the 76CSx is the 10,000 point automatic track log; 20 saved tracks (500 points each) let you retrace your path in both directions. Meanwhile, there's a large numbers option for easy viewing, as well as a dual-position display mode. The unit also includes built-in celestial tables for best times to fish and hunt, plus sun and moon calculations. You also get audible alarms for anchor drag, arrival, off-course, proximity waypoint, and clock. The unit's barometric altimeter system features automatic pressure trend recording while providing current elevation, ascent/descent rate, minimum/maximum elevation, total ascent and descent, and average and maximum ascent and descent rate. Meanwhile, the electronic compass allows you to get accurate headings while standing still. The 76CSx's trip computer provides odometer, stopped time, moving average, overall average, total time, max speed, and more. Meanwhile, a fast processor allows the 60Cx to provide quick auto-routing, turn-by-turn directions, and audio alerts when you use the optional MapSource software, which can be stored on the unit's included 128 MB microSD card. Downloading information is quick with the USB or serial port interfaces. Using the dedicated serial port, the 76CSx can share navigation instructions with repeaters, plotters, and autopilots. If you like the features of the 76CSx but don't need an electronic compass and a barometric altimeter, check out the Garmin GPSMap 76Cx. What's in the Box GPSMAP 76CSx, Americas Recreational Basemap, 128 MB microSD card, USB cable, MapSource Trip & Waypoint Manager, Wrist strap, Owner's manual, Quick reference guide.
B07H1Y17SH Price: $353.55 Score: 8.065 Category: Electronics Rating: 4.2 Votes: 160 Find similar products Garmin GPSMAP 66s, Rugged Multisatellite Handheld with Sensors, 3 Color Display. Navigate your next outdoor adventure with the GPSMAP 66 series. Whether you’re hiking, hunting, climbing, geocaching, kayaking or mountain biking, you can explore more with this premium, rugged handheld with a 3” color display. It features access to BirdsEye Satellite Imagery with direct-to-device downloads to help you find your way plus preloaded TOPO U.S. and Canada maps on GPSMAP 66s. And it offers offers multi-GNSS support as well as wireless connectivity for Active Weather, direct downloads and Garmin Explore compatibility.	B000V4S6YM Availability: Currently unavailable Score: 7.874 Category: Electronics Rating: 3.7 Votes: 6 Find similar products Magellan Triton 200 Waterproof Hiking GPS. Product Description The Triton 200 is so easy to use that its user manual may never make it out of the box. It reinvents handheld GPS by combining exclusive compatibility with National Geographic TOPO!® maps, new Magellan VantagePoint¿ content management software, a rugged, waterproof design, and the essential feature set that outdoor enthusiasts need and expect. Amazon.com Amazon.com Product Description The Triton 200 gives you a full color screen, a built-in map database and, the essential easy-to-use navigation features, making it an unmatched value in its class. Magellan Triton 200 reinvents handheld GPS. Triton 200 is amazingly easy to use with a smartly designed interface and simple menus that make navigation fun and effortless. The full-color crystal clear display shows all your maps and navigation information in brilliant, easy-to-view graphics. Quickly view all your maps, locations and saved tracks and waypoints using the intuitive user interface and direct-access buttons. Unlike complicated devices that require you to scroll through screen after screen, Triton 200 gets you to the information you want in two or three clicks. The next-generation handheld GPS for precision outdoor navigation. Click to enlarge. Simple menus, instant access buttons, intuitive scroll pad and crystal clear graphics let you navigate with ease. Click to enlarge. See your direction of travel, distance and position of destination, heading, bearing, speed and more on the beautiful graphic compass screen. Click to enlarge. Ready to guide you on any adventure. Click to enlarge. Triton is designed for precision navigation, offering the fastest GPS positioning acquisition in the industry with the SiRFstarIII chipset. An integrated high-sensitivity antenna provides reliable signal reception even in heavy cloud cover, canyons or deep woods. Built-in signal augmentation reception (WAAS/EGNOS) provides 3-meter accuracy. Rugged and waterproof, the Triton 200 is built to withstand intense use, accidental impact and immersion in one meter of water for up to 30 minutes (IPX-7). It's ready to guide you on any adventure. The advanced features are also easy to use. View the elevation profile for the trail ahead (or any route). See the precise time of sunrise/sunset any day of the year. Get a calculation of the best hunting and fishing time. And much more. Triton is built on the experience of GPS users over nearly 20 years of precision positioning technology from Magellan: the first name in navigation. Features Available With Purchase of Data Cable: Exclusive VantagePoint software lets you easily manage user generated content, updates and upgrades on your PC. View saved routes and tracks. Customize them for future trips or create new ones. Add detailed maps and applications to the available memory and further enhance your navigation experience. Plus, Triton is the first handheld GPS to offer compatibility with National Geographic TOPO! State series and Weekend Explorer 3D maps. These highly detailed nation-wide topographic maps based on USGS 1:24.000 series quads, offer seamless scalability, multi-layer overlays and much more. Magellan Triton 200 Features Amazing ease-of-use Reinventing handheld GPS, simple menus, instant access buttons, intuitive scroll pad and crystal clear graphics let you navigate without the need for a Ph.D. Full-color 2.2 display The large display shows maps, simple menus, navigation screens and other data in brilliant color. Built-in maps Basemap of the 48 contiguous United States, Alaska, and Canada (major highways, city centers, bodies of water and more) plus worldwide geographic boundaries. Compass screen See your direction of travel, distance and position of destination, heading, bearing, speed and more on the beautiful graphic compass screen. 3-meter accuracy SiRFstarIII chipset and integrated multidirectional antennae offer superior GPS accuracy using the Wide Area Augmentation System (WAAS). Access exclusive VantagePoint software Lets you easily manage user generated content, updates and upgrades on your PC. View saved routes and tracks. Customize them for future trips or create new ones. Optional (requires purchase of Data Cable). Add detailed maps Upload optional marine cartography, topographic maps, and other data including the highly-detailed and feature-packed National Geographic TOPO! State series and Weekend Explorer 3D maps based on USGS 1:24.000 series quads. -- Optional (requires purchase of Data Cable) What's in the Box Triton 200 GPS receiver, Quick reference guide, manual on CD-ROM.
B07T6JZ2KR Availability: Currently unavailable Score: 7.874 Category: Electronics Rating: 4.3 Votes: 74 Find similar products Garmin GPSMAP 64x Handheld GPS with 16GB Camping & Hiking Bundle (010-02258-00). Navigate your next adventure with the GPSMAP 64x handheld navigator series. Whether you’re hiking, cycling, geocaching or climbing, you are free to explore more with proven Garmin handheld navigation in the palm of your hand. And the series now has multi-GNSS support and TopoActive mapping. Explore the World with Reliable Navigation in HandRugged and water-resistant design with button operation and a 2.6” sunlight-readable color displayPreloaded with TopoActive maps (U.S. and Australia only) featuring routable roads and trails for cycling and hikingKnow where you’re at with a high-sensitivity receiver with quad helix antenna and multi-GNSS support (GPS, GLONASS and Galileo) and 3-axis compass with barometric altimeterCellular connectivity lets you access Active Weather forecasts and Geocaching LiveGPSMAP 64csx adds 8-megapixel autofocus camera that lets you geotag photosBattery life: up to 16 hours in GPS modeExplore the TerrainThe GPSMAP 64x handheld series comes preloaded with TopoActive maps featuring routable streets and trails so you can take the journey off the grid. Now you can know your surroundings — such as waterways and natural features as well as buildings, international boundaries and more. You can also find thousands of points of interests, including shops, restaurants, universities, parks and accommodations. Keep Your FixWith its quad helix antenna and high-sensitivity receiver and multiple global n.	B004LG9R5S Availability: Currently unavailable Score: 7.519 Category: Electronics Rating: 5 Votes: 2 Find similar products 010-00697-41 GPS, OREGON 450T Garmin Hand Held GPS. Adventure awaits with the Oregon 450t. An impressive 3.0 touchscreen displays preloaded topographic maps, 3D map views, and a worldwide basemap. Experience the height of GPS technology, including a high-sensitivity receiver, barometric altimeter, electronic compass, and yes, more. You can even exchange information wirelessly between similar units.
B00XIUWE9E Price: $63.96 Score: 7.353 Category: Electronics Rating: 3.4 Votes: 22 Find similar products Magellan Triton 300 Waterproof Hiking GPS. Product Description The Triton 300 is so easy to use that its user manual may never make it out of the box. It reinvents handheld GPS by combining exclusive compatibility with National Geographic TOPO!® maps, new Magellan VantagePoint¿ content management software, a rugged, waterproof design, and the essential feature set that outdoor enthusiasts need and expect. Amazon.com Amazon.com Product Description Magellan Triton reinvents handheld GPS. Triton 300 is amazingly easy to use with a smartly designed interface and simple menus that make navigation fun and effortless. The full-color crystal clear display shows all your maps and navigation information in brilliant, easy-to-view graphics. Instantly view all your maps, locations and saved tracks and waypoints using the intuitive scroll pad and direct-access buttons. Unlike other complicated devices that require you to scroll through screen after screen, Triton 300 gets you to the information you want in two or three clicks. The next-generation handheld GPS for precision outdoor navigation. Click to enlarge. Simple menus, instant access buttons, intuitive scroll pad and crystal clear graphics let you navigate with ease. Click to enlarge. See your direction of travel, distance and position of destination, heading, bearing, speed and more on the beautiful graphic compass screen. Click to enlarge. Ready to guide you on any adventure. Click to enlarge. Add detailed maps and applications to the available memory and further enhance your navigation experience. Plus, Triton is the first handheld GPS to offer compatibility with National Geographic TOPO! State series and Weekend Explorer 3D maps. These highly detailed nation-wide topographic maps based on USGS 1:24.000 series quads, offer seamless scalability, multi-layer overlays and much more. Exclusive VantagePoint software enables easy management of maps, user generated content, updates and upgrades on your PC. View saved routes and tracks. Customize them for future trips or create new ones. Triton is designed for precision navigation, offering the fastest GPS positioning acquisition in the industry with the SiRFstarIII chipset. An integrated high-sensitivity antenna provides reliable signal reception even in heavy cloud cover, canyons or deep woods. Built-in signal augmentation reception (WAAS/EGNOS) provides 3-meter accuracy. Rugged and waterproof, the Triton 300 is built to withstand intense use, accidental impact and immersion in one meter of water for up to 30 minutes (IPX-7). It's ready to guide you on any adventure. The advanced features are also easy to use. View the elevation profile for the trail ahead (or any route). See the precise time of sunrise/sunset any day of the year. Get a calculation of the best hunting and fishing time. And much more. Triton is built on the experience of GPS users over nearly 20 years of precision positioning technology from Magellan: the first name in navigation. Magellan Triton 300 Features Amazing ease-of-use Reinventing handheld GPS, simple menus, instant access buttons, intuitive scroll pad and crystal clear graphics let you navigate without the need for a Ph.D. Full-color 2.2 display The large display shows maps, simple menus, navigation screens and other data in brilliant color. Built-in maps Basemap of the 48 contiguous United States, Alaska, and Canada (major highways, city centers, bodies of water and more) plus worldwide geographic boundaries. Access exclusive VantagePoint software Lets you easily manage user generated content, updates and upgrades on your PC. View saved routes and tracks. Customize them for future trips or create new ones. Add detailed maps Upload marine cartography and topographic maps, including the highly-detailed and feature-packed National Geographic TOPO! state series and Weekend Explorer 3D Maps. Compass screen See your direction of travel, distance and position of destination, heading, bearing, speed and more on the beautiful graphic compass screen. 3-meter accuracy SiRFstarIII chipset and integrated multidirectional antennae offer superior GPS accuracy using the Wide Area Augmentation System (WAAS). What's in the Box Triton 300 GPS receiver, Quick reference guide, manual on CD-ROM.	B0002VAEPI Availability: Currently unavailable Score: 7.194 Category: Electronics Rating: 5 Votes: 2 Find similar products Remanufactured Garmin Foretrex 201 Wrist-Mounted GPS with Waterproof Exterior. Product Description The Foretrex 201 is a wearable Personal Navigator for the outdoor enthusiast. Built rugged for adventure, this wrist-top device is perfect for hikers, campers, climbers, and mariners who want a useful GPS in a lightweight, waterproof, and affordable package. The Foretrex 201 combines the form factor of our new personal training system, the Forerunner 201, with the GPS navigation features of our popular Geko 201. The Foretrex 201 offers hands-free GPS navigation information, allowing you to concentrate on your outdoor activities. The Foretrex 201 features six dedicated buttons (GoTo, Page, Enter/Mark, Up, Down and Power), making it one of the easiest GPS units on the market to operate. It offers the most essential navigation data, enhanced GPS accuracy, and extensive storage for waypoints, reversible routes, and track information. It includes Garmin’s exclusive TracBack technology which allows you to mark your campsite, go trekking all day, and then follow the electronic “breadcrumb trail” back to camp in time for dinner. You don’t even need to worry about packing extra batteries, because the Foretrex 201 runs on an internal lithium battery for 15 hours. Remanufactured unit includes wrist strap, Expandable strap, A/C desktop charger with PC interface cable, Quick Start Guide, and Owners manual. Amazon.com The Foretrex 201 is a wearable Personal Navigator, perfect for outdoor and marine enthusiasts who desire hands-free GPS navigation in a lightweight, affordable package. At a mere 2.75 ounces, this waterproof wonder is lighter than most watches, and its wrist-top mount frees up hands for outdoor activities and sports an ergonomic wristband. The 201 model comes with a recharging unit so you never have to stock up on batteries for all your daily adventures, but consider the Foretrex 101 that runs on 2 AAA batteries if you're wandering away from the power outlet for a while. With a user-friendly interface, the rugged Foretrex 201 simplifies navigation, making it ideal for the backcountry or water. Its six dedicated buttons (GoTo, Page, Enter/Mark, Up, Down and Power) make it easy to operate. It offers the most essential navigation data -- enhanced GPS accuracy, extensive storage for waypoints, and reversible routes and tracks -- on an easy-to-read display. Don't worry about packing extra batteries, because the Foretrex 201 runs on an internal lithium battery for 15 hours (typical use). Simply recharge and go. The Foretrex 201 also comes equipped with special features sure to please mariners and hikers alike. It includes a unique application for sailing and paragliding racers that allows them to configure the start sequence of a race. The countdown is displayed in a large-number format that audibly alerts the user at each phase of the start sequence. With the help of Garmin's exclusive TracBack® technology, hikers can mark a campsite, go trekking all day, and follow the electronic breadcrumb trail back to camp in time for dinner. The WAAS difference 100 meters: Accuracy of the original GPS system, which was subject to accuracy degradation under the government-imposed Selective Availability (SA) program. 100 meters : Accuracy of the original GPS system, which was subject to accuracy degradation under the government-imposed Selective Availability (SA) program. 15 meters: Typical GPS position accuracy without SA. 15 meters : Typical GPS position accuracy without SA. 3-5 meters: Typical differential GPS (DGPS) position accuracy. 3-5 meters : Typical differential GPS (DGPS) position accuracy. Less than 3 meters: Typical WAAS position accuracy. WAAS is a system of satellites and ground stations that provide GPS signal corrections, giving you even better position accuracy. How much better? Try an average of up to five times better. A WAAS-capable receiver can give you a position accuracy of better than three meters 95 percent of the time. And you don't have to purchase additional receiving equipment or pay service fees to utilize WAAS. How it Works WAAS consists of approximately 25 ground reference stations positioned across the United States that monitor GPS satellite data. Two master stations, located on either coast, collect data from the reference stations and create a GPS correction message. This correction accounts for GPS satellite orbit and clock drift plus signal delays caused by the atmosphere and ionosphere. The corrected differential message is then broadcast through one of two geostationary satellites, or satellites with a fixed position over the equator. The information is compatible with the basic GPS signal structure, which means any WAAS-enabled GPS receiver can read the signal. Who benefits from WAAS? Currently, WAAS satellite coverage is only available in North America. There are no ground reference stations in South America, so even though GPS users there can receive WAAS, the signal has not been corrected and thus would not improve the accuracy of their unit. For some users in the U.S., the position of the satellites over the equator makes it difficult to receive the signals when trees or mountains obstruct the view of the horizon. WAAS signal reception is ideal for open land and marine applications. WAAS provides extended coverage both inland and offshore compared to the land-based DGPS (differential GPS) system. Another benefit of WAAS is that it does not require additional receiving equipment, while DGPS does. Less than 3 meters : Typical WAAS position accuracy. WAAS is a system of satellites and ground stations that provide GPS signal corrections, giving you even better position accuracy. How much better? Try an average of up to five times better. A WAAS-capable receiver can give you a position accuracy of better than three meters 95 percent of the time. And you don't have to purchase additional receiving equipment or pay service fees to utilize WAAS. How it Works WAAS consists of approximately 25 ground reference stations positioned across the United States that monitor GPS satellite data. Two master stations, located on either coast, collect data from the reference stations and create a GPS correction message. This correction accounts for GPS satellite orbit and clock drift plus signal delays caused by the atmosphere and ionosphere. The corrected differential message is then broadcast through one of two geostationary satellites, or satellites with a fixed position over the equator. The information is compatible with the basic GPS signal structure, which means any WAAS-enabled GPS receiver can read the signal. Who benefits from WAAS? Currently, WAAS satellite coverage is only available in North America. There are no ground reference stations in South America, so even though GPS users there can receive WAAS, the signal has not been corrected and thus would not improve the accuracy of their unit. For some users in the U.S., the position of the satellites over the equator makes it difficult to receive the signals when trees or mountains obstruct the view of the horizon. WAAS signal reception is ideal for open land and marine applications. WAAS provides extended coverage both inland and offshore compared to the land-based DGPS (differential GPS) system. Another benefit of WAAS is that it does not require additional receiving equipment, while DGPS does.