Global Positioning

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GPS Devices :

- Reviews of GPS receivers written by consumers at Epinions.com. Can be viewed by price range, brand, mapping capability, marine features.
GPS Reviews :

- Top-rated GPS handheld portable units, in-car systems, and PDA/computer plugin receivers. Where to find reviews in computer or technology publications and web sites. Links to reviews, with comments and credibility rating.
How Stuff Works: Global Positioning System Receivers :

- Explanation of Global Positioning System (GPS) receivers.