![]() ![]() So with a long enough wire the call will not be audible at the other end. The longer the wire, the more power is lost, and the smaller the amplitude of the signal at the far end. For example, when a telephone call passes through a wire telephone line, some of the power in the electric current which represents the audio signal is dissipated as heat in the resistance of the copper wire. When an information-bearing signal passes through a communication channel, it is progressively degraded due to loss of power. There are several different types of repeaters a telephone repeater is an amplifier in a telephone line, an optical repeater is an optoelectronic circuit that amplifies the light beam in an optical fiber cable and a radio repeater is a radio receiver and transmitter that retransmits a radio signal.Ī broadcast relay station is a repeater used in broadcast radio and television. Some types of repeaters broadcast an identical signal, but alter its method of transmission, for example, on another frequency or baud rate. ![]() Repeaters are used to extend transmissions so that the signal can cover longer distances or be received on the other side of an obstruction. In telecommunications, a repeater is an electronic device that receives a signal and retransmits it. A radio repeater retransmits a radio signal.
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