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Category: Science
Word Count: 470
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satellite

SATELLITES
A satellite is any object that orbits or revolves around another. In addition to the Moon (a natural satellite), thousands of man-made satellites (used for communication, weather forecasting, research and surveillance) also orbit the Earth.

A typical satellite consists of a number of repeaters (transponders), each of which provides a large-capacity communication channel. Each transponder has a receiver tuned to a frequency range that has been allocated for uplink communication sig
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