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The Calian TW1721/TW1722 is a compact wideband GNSS antenna that includes Calian’s Accutenna Technology which offers incredibly accurate circular reception for all upper L- band GPS, GLONASS, Beidou, and Galileo signals and associated augmentation signals. The TW1721/TW1722 is the right antenna for a range of applications, including avionics, law enforcement, military, precision agriculture, and construction.