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Outline of radio. The following outline is provided as an overview of and topical guide to radio: Radio – transmission of signals by modulation of electromagnetic waves with frequencies below those of visible light. [1] Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of ...
AM broadcasting. AM broadcasting is radio broadcasting using amplitude modulation (AM) transmissions. It was the first method developed for making audio radio transmissions, and is still used worldwide, primarily for medium wave (also known as "AM band") transmissions, but also on the longwave and shortwave radio bands.
BBC Radio 4 – news, current affairs, arts, history, original in-house drama, original in-house first-run comedy, science, books and religious programming. The service closes down and simulcasts the BBC World Service from 01:00 to 05:20 daily. Available between 92–95 and 103–105 FM, 198 LW and on digital platforms.
Wikipedia, a free-content online encyclopedia written and maintained by a community of volunteers known as Wikipedians, began with its first edit on 15 January 2001, two days after the domain was registered. [2] It grew out of Nupedia, a more structured free encyclopedia, as a way to allow easier and faster drafting of articles and translations.
The Golden Age of Radio, also known as the old-time radio (OTR) era, was an era of radio in the United States where it was the dominant electronic home entertainment medium. It began with the birth of commercial radio broadcasting in the early 1920s and lasted through the 1950s, when television gradually superseded radio as the medium of choice for scripted programming, variety and dramatic shows.
the free encyclopedia that anyone can edit. Hö'elün ( fl. 1162–1210) was a Mongolian noblewoman and the mother of Temüjin, better known as Genghis Khan. She played a major role in his rise to power. Born into the Olkhonud clan of the Onggirat tribe, Hö'elün was originally married to Chiledu, but was captured shortly after her wedding by ...
Broadcasting tower in Trondheim, Norway. 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 ...
