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A: Microwaves are very hi frequency and travel as visual light in other words directly in a straight line. So in order to reach a city on the other side of mountain a repeater of the signal is installed at the top of the mountain whereas the means to receive the signal amplify if necessary and retransmit to the town below. If you see antenna cluster on top of a hill those are repeaters station for all kinds of signals.

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14y ago

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