Radio Broadcasting is the distribution of audio signals that transmit programs to an audience. There are wide varieties of broadcasting systems, all of which have different capabilities. It can vary from limited area coverage to national and can be used to transmit signals globally too, using retransmitted towers, satellite systems, and cable distribution. Satellite radio revolutionaries the entire scenario, it could cover even wider areas, such as entire continents, and Internet channels can distribute text or streamed music worldwide. In the late 1990s, digital transmissions began to be applied to broadcasting.

A broadcast may be distributed through several physical means. If coming directly from the studio at a single radio station, then it is simply sent to the transmitter from the antenna on the tower. Programming which comes through a satellite, played either live or recorded for transmission later. Different stations may simulcast the same programming at the same time. Usually analogue or digital tapes or CDs/DVDs are included in another broadcast. The final stage of broadcasting is to get the signal to the audiences. It is done via radio station to a receiver or through cable. Internet also brings radio to the recipient.