Radio and television transmission mode

There are two main modes of broadcasting and television, namely, wireless broadcasting and wired broadcasting. Radio and television is a news communication tool that transmits sound, image and video through radio waves or wires. Radio and television have obvious basic functions of information industry.

Radio and television are divided into wireless broadcasting and wired broadcasting according to transmission modes. Broadcast only sound, referred to as "sound broadcast" or "broadcast"; Those who broadcast images and sounds are called "TV broadcasting" or "TV" for short.

Radio and TV features: 1, visualization: transmitting information in the form of sound and image. 2. Timeliness: transmitting information at the speed of radio wave propagation. 3. Extensiveness: the media with the widest coverage.