Question

derive an expression for the range of transmission via space wave from a transmitting antenna.

Answer 1

The relation among radius of Earth, height of antenna

R= radius of earth

d= range

H= height

(R+h)^2=R^2+d^2

R^2+h^2+2hR=R^2+d^2

d^2=h^2+2hR

But<<R,sod^2=2hR.