Explain the concept of space wave propagation.

1.	Explain the concept of space wave propagation.
Answer» Space waves are the waves that travel from the transmitting to receiving antenna in the earths troposphere (first 18 km from earths surface). Space waves have two components.One of them is line of sight ray which travels directly from transmitting to receiving antenna.The other is ground reflected wave, which reaches the receiver due to reflection from the surface of the earth. Radio transmission at frequencies above 30 MHz, TV, FM, radar use space wave propagation.

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