How Video Works, 3rd Edition

5The Transmitted Signal

Television transmission is the process of sending the video, audio, and synchronizing signals from a transmitting facility to a receiver. In trying to get a package from one city to another, one would arrange for a truck, train, or airplane to be the carrier of that package to its destination. What happens in radio and television is similar, in that specific frequencies are designated as the carriers for radio and television signals. The signal that carries the information is directed out into the air or through a cable so that receivers tuned to the frequency of the carrier can pick up the signal. Once it picks up the signal, the receiver can extract the information from the carrier. Today, most people receive a television ...