Question

A transmitting antenna has a height of $320\text{m}$ and that of receiving antenna is $2000\text{m}$. The maximum distance between them for satisfactory communication in line of sight mode is '$d$'. Then the value of '$d$' is $\text{km}$

• A. 224.0
• B. 224

Answer 1

Answer: (A), (B)

The distance $d$ is given by :
$d=\sqrt{2R{h}_r}+\sqrt{2R{h}_t}$
$d=\sqrt{2\times 6400\times {10}^3\times 2000}+\sqrt{2\times 6400\times {10}^3\times 320}$
$\Rightarrow d=224\text{km}$