The gateway exchange is the center at which the international exchange multiplex equipment and ancillary equipment, for international telephone and/or telegraph, Telex data, Television and Facsimile are located.
Radio signals are transmitted through electromagnetic waves, also called radio waves, in radio communication system. The radio waves have a wide frequency range starting from a few ten kilo Hertz (kHz) to several thousand Mega Hertz (MHz).
When we AC input is applied to the transmission line its inductive reactance (XL) increases with increase in frequency. As the transmission line is made of the millions of small particles, therefore the chain of those particles make the transmission line to
Transmission line is defined as the path of carrying alternating electrical energy from source to load. For example the wire used between T.V antenna and television set or the wire used between transmitter antenna and transmitter are known as transmission