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Radio broadcasting is the broadcasting of audio (sound), sometimes with related metadata, by radio waves to radio receivers belonging to a public audience. In terrestrial radio broadcasting the radio waves are broadcast by a land-based radio station, while in satellite radio the radio waves are broadcast by a satellite in Earth orbit.
Learn about the origins, development, and impact of radio as a form of mass media and sound communication. Explore the history of radio programming and broadcasting around the world from 1906 to the present.
- Efforts were made to use radio in World War I, but the technology proved unreliable. Wireless sets were available in battlefield trenches, where th...
- Radio waves are located at the low-frequency end of the electromagnetic spectrum, beneath gamma rays, X-rays, ultraviolet light, visible light, inf...
- The first practical wireless radio communication system was developed in Italy by Guglielmo Marconi. Marconi built on the mathematics of physicist...
Radio broadcasting has been used in the United States since the early 1920s to distribute news and entertainment to a national audience. In 1923, 1 percent of U.S. households owned at least one radio receiver, while a majority did by 1931 and 75 percent did by 1937.
Oct 19, 2023 · Learn about the different types of radio broadcasting, their costs, and how to get started. Compare AM, FM, DAB, and internet radio, and find out how Radio.co can help you launch your own station online.
Top stories in the U.S. and world news, politics, health, science, business, music, arts and culture. Nonprofit journalism with a mission. This is NPR.
Learn how radio evolved from a wireless technology to a mass communication medium, from its invention by Marconi to its Golden Age and beyond. Explore the effects of networks, conglomerates, and advertising on radio programming and culture.
Apr 30, 2024 · Every day, NPR connects with millions of Americans on the air, online, and in person to explore the news, ideas, and what it means to be human. Through its network of member stations, NPR makes...
