Television is just another application of wireless radio communications, but with picture information in addition to the sound signal. Two separate carrier waves are transmitted by the station in its assigned channel. One carrier is an AM picture signal, modulated by video signal with the picture information. The other carrier is an FM sound signal modulated by the audio.
A television channel is 6 MHz wide to include both the picture and sound signals for each broadcast station. Channel 2, for instance is 54 to 60 MHz.
2/23/2009
Television Broadcasting
Label: Basic Eletronics
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