To simulcast is to provide the same program at the same time over two or more electronic media (broadcast, cable, or satellite) channels—a simultaneous broadcast. Most typical is simulcasting of broadcasts over an AM and FM station in the same market, or over both a radio and a television station. But there are many variations, and the most common today is a radio station simulcasting its signal over the Internet. The relevance of simulcasting to journalism is found most strongly in sportscasting.


The first widespread use of simulcasting in the United States utilized AM and FM stations in the late 1940s. As the new FM service developed, network and AM broadcasters argued that the most efficient way to build its audiences was with popular AM program ...

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