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A transmitting antenna at top of a tower...

A transmitting antenna at top of a tower has a height of 50 m and the height of receiving antenna is 80 m. What is the range of communication for Line of Sight (LoS) mode?
[use radius of earth = 6400 km]

A

80.2 km

B

144.1 km

C

57.28 km

D

45.5 km

Text Solution

Verified by Experts

The correct Answer is:
C
`d_t=sqrt(2Rh_1)+sqrt(2Rh_2)`
`=sqrt(2R)(sqrth_1+sqrth_2)`
`=(2xx6400xx10^3)^(1//2)(sqrt50+sqrt80)`
= 3578(7.07 + 8.94)
=57.28 km.
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