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How 4G Works

Wireless’ Unending Evolution Wireless networks are hodgepodge of various and overlapping technologies. No matter how convoluted the acronyms, what it always boils down to is this — wireless networks are radio systems. You can read about the basics of cell phone technology in How Cell Phones Work and How Smartphones Work. No matter which wireless

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How HDTV Works

Analog, Digital and HDTV ­For years, watching TV has involved analog signals and cathode ray tube (CRT) sets. The signal is made of continually varying radio waves that the TV translates into a picture and sound. An analog signal can reach a person’s TV over the air, through a cable or via satellite. Digital signals,

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