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Shanta Zuhlke
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{GPS units, atmospheric measuring instruments, compasses, radios, walkie-talkies, and game locating and surveillance cameras have become widely used. GPS, or Global Positioning System, is a satellite navigational system orbiting the earth and their receivers on earth. The GPS satellites US clock engraving transmit digital radio signals that contain data to... Continue reading
Posted Sep 30, 2010 at Shanta Zuhlke's blog
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Sep 30, 2010