State in brief how artificial satellites are used in transmitting television programme over large distances.
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the picture or sound to be tramsmitted is first converterd into electrical signals. then they are converted into a special type of waves and transmitted in air from a transmitting antenna so as to reach the artificial satellite. the signal received then amplified and re-transmitted by the instrument fitted in the satellite.the antenna fixed in a no. of stations on the earth including those of cable operators receive the signals and re-transmit them.the television set receive the signals and reconvert them in the form of images and sound.
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nikita12354:
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