question_answer

Explain, using a proper diagram the mode of propagation used in the frequency range above \[\mathbf{40}\text{ }\mathbf{MHz}.\]                            

Answer:

                Above \[\text{4}0\text{ MHz},\] the mode of propagation used is via space waves. A space wave travels in a straight line from the transmitting antenna to the receiving antenna. Space waves are used for line of sight (LOS) communication as well as satellite communication.