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  2. Why a signal transmitted from a TV tower can't be received beyond a certain distance? write the expression for the optimum separation between the receiving and the transmitting antenna.  
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Why a signal transmitted from a TV tower can't be received beyond a certain distance? write the expression for the optimum separation between the receiving and the transmitting antenna.

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S safeer

A signal transmitted from a TV tower can't be received beyond a certain distance, because of the curvature of the earth.

The radius of the earth be R. the height of the transmitting antenna be h.then the optimum seperation d between the receiving and the transmitting antenna will be given as:-

d=\sqrt{2Rh}

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