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  • The height of transmitting antenna is 180 m and the height of the receiving antenna is 245 m. The maximum distance between them for satisfactory communication in line of sight will be:

The height of transmitting antenna is 180 m and the height of the receiving antenna is 245 m. The maximum
distance between them for satisfactory communication in line of sight will be:
(given R = 6400 km)

Option: 1

 48 km 


Option: 2

104 km


Option: 3

 96 km 


Option: 4

56 km


Answers (1)

best_answer

\begin{aligned} & \mathrm{d}=\sqrt{2 \mathrm{Rh}_{\mathrm{T}}}+\sqrt{2 \mathrm{Rh}_{\mathrm{R}}} \\ & \mathrm{d}=\sqrt{2 \mathrm{R}}(\sqrt{180}+\sqrt{245}) \\ & \mathrm{d}=\sqrt{2 \times 64 \times 10^5}(\sqrt{180}+\sqrt{245}) \\ & \mathrm{d}=3577.7(13.416+15.652) \mathrm{m} \\ & \mathrm{d}=104 \mathrm{~km} \end{aligned}

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seema garhwal

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