To transmit signals in the range 30-300 MHz space Sr wave propagation is used. Derive an expression for area covered by a signal if the height of antenna is h

Television broadcast is done by space wave mode of propagation. A TV transmission antenna is 81 m tall. How much service area can it cover If the receiving antenna is at the ground level? (Radius of earth is 6400km)

In an electromagnetic wave, the oscillating electric field having a frequency of 3 * 10^12 Hz and an am plitude of 30 V/m propagates in free space in the positive x-direction Write down the expression to represent the electric field

Various propagation modes are used in communication.If a signal of frequency omega_s used to modulate a is carrier wave of frequency omega_c which are the frequencies contained in the modulated signal other than omega_c ?