question_answer

Why is ground wave transmission of signals restricted to a frequency of\[\mathbf{1500}\text{ }\mathbf{kHz}\]?

Answer:

                As a ground wave passes over the surface of the earth, it is weakened due to the absorption of energy by the earth. These energy losses increase with the increase in frequency. Hence ground wave propagation can be sustained only up to a frequency of\[\text{15}00\text{ kHz}\]. Higher frequencies are highly damped.