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GPS World - http://www.gpsworld.com/
Magazine, buyer's guide, solutions database, columns, products and reviews, and employment opportunities.
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Peter Bennett's FTP directory - http://vancouver-webpages.com/peter/index.html
NMEA-0183 and GPS Information
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Sam Wormley's Global Positioning System - http://www.edu-observatory.org/gps/gps.html
Large collection of information/education resources and links, from Iowa State University.
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GPS Nuts - http://www.gpsnuts.com/
Practical guides, tips, tricks, equipment, software reviews, and other related information provided by recreational GPS users.
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Garmin GPS and MapSource Maps - http://www.bollar.org/garmin.htm
Side-by-Side comparison pages of Garmin's MapSource line of GPS moving map products.
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