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Articles
Global Positioning System (GPS), GPS Modernization, GPS Signals, GNSS Augmentation (includes SBAS and GBAS), Wide Area Augmentation System (WAAS), Wide Area GPS Enhancement (WAGE), Quasi-Zenith Satellite System (QZSS), GPS Aided Geo Augmented Navigation (GAGAN), Indian Regional Navigational Satellite System (IRNSS), Precision Lightweight GPS Receiver (PLGR), Defense Advanced GPS Receiver (DAGR), ‎Automatic Identification System (AIS), GLONASS.
Automatic Picture Transmission (APT), Low Rate Picture Transmission (LRPT), Amateur radio licensing in the United States.
Bell/Agusta BA609 Tiltrotor.
Grapevine Lake.
T-Mobile (USA)
Images
Image:FAA WAAS System Overview.jpg, Image:FAA WAAS coverage late 2006.jpg, ‎Image:FAA WAAS coverage next generation.jpg, Image:GPS constellation 6 jul 06.png, Image:PLGR tan green.jpg, Image:DAGR.jpg.
Image:NOAA APT Frame Format.gif, Image:Noaa-18 APT Enhanced.jpg.
Image:Asos SNS sunset.jpg
Image:Grapevine Lake.gif, Image:Grapevine Lake dam.jpg, Image:Grapevine lake crosstimbers.jpg, Image:Grapevine lake northshorebench.jpg.

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