Question

Greater the height of a tv transmitting antenna greater is its coverage. Explain

Answer 1

An antenna coverts electrical energy into electromagnetic waves at transmitting end and it will receive the transmitted

signals by receiver end and again converts into electromagnetic waves into electrical signal.

Very High Frequency VHF of frequency range 30MHz to 300MHZ with wavelength 1m to 10m is uesd.

This type of propagation is called as line of sight communication.

If H is height of transmitting antenna, then signal can be received

up to a maximum distance of

d= √2RH

if heights of transmitting and receiving antennas be hT and hR.

Range= d= √2Rht + √2Rhr

so its clear from above statement that height of  TV Transmitting is antenna greater is its coverage