The line of sight distance between two antennas of heights 144 m and 324 m above earth surface is:
(Given $\sqrt{20}$ = 4.4)
Answer & explanation
Correct answer: option 2
$\text{ Range R } = \sqrt{2Rh_T}+ \sqrt{2Rh_R} = \sqrt{2\times 6400\times 10^3\times 144}+ \sqrt{2\times 6400\times 10^3\times 324}$
$= 9600\sqrt{20} + 14400\sqrt{20} = 24000\sqrt{20}$
$= 24\times 4.4 Km = 105.6Km$