The campus broadcast sense there are three different categories
First, in traditional sense, the campus is using wireless FM radio, is a kind of small power FM radio, a lot of universities and colleges, middle schools or even primary school, is now a large number of using campus FM radio broadcast English program or other programs, generally between 76-87 MHZ frequency range, which means using ordinary television sound of the radio can be received. Now some FM radio frequency directly to extend to 76-108 MHZ, can satisfy the needs of listening to the campus broadcast.
Second, for now, the campus broadcast include through audio line for campus music playback, fire alarm, notify the paging; Mainly by the campus smart MP3 master program control, combined with the built-in audio programming, to achieve timing fixed-point program, accomplish unattended. Mostly primary and secondary schools, units, factories are also implement broadcast paging in this mode.
Third, with the development of the network, some schools want to line through the existing network to realize radio, paging function, can also realize point-to-point addressable broadcasting, is we often say that the campus network broadcasting; Now the school, especially the campus slowly spread to this area.