Q. 124.3( 3 Votes )

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Answer :

Given: -

The height of the transmitting antenna, 20 m.,

The height of the receiving antenna, 25 m.,

Formula: -

The maximum line-of-sight distance dM between the two antennas having heights hT and hR above the earth is given by,

DM = (2 R hT)1/2 + (2 R hR)1/2

where hR is the height of receiving antenna, where hT is the height of the transmitting antenna and R is the radius of the earth (6400 Km approx.).

So, substituting the values, we get,

DM = (2 × 6400000 × 20)1/2 + (2 × 6400000 × 25)1/2

≈33888 m

DM = 33.8 Km


The Range of the Transmission is, DM = 33.8 Km.

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