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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.
The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of broadcasting.
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the birth of commercial radio broadcasting in the early 1920s and lasted through the 1950s, when television gradually superseded radio as the medium of choice ...
In the United States, iBiquity's proprietary HD Radio has been adopted and approved by the FCC for medium wave transmissions, [93] while Digital Radio Mondiale is a more open effort often used on the shortwave bands, and can be used alongside many AM broadcasts. Both of these standards are capable of broadcasting audio of significantly greater ...
Radio regulation in the United States was enforced to eliminate different stations from broadcasting on each other's airwaves. Regulated by the Federal Communications Commission , standardization was encouraged by the chronological and economic advances experienced by the United States of America.
In the United States, FM broadcasting stations currently are assigned to 101 channels, designated 87.9 to 107.9 MHz, within a 20.2 MHz-wide frequency band, spanning 87.8–108.0 MHz. In the 1930s investigations were begun into establishing radio stations transmitting on "Very High Frequency" (VHF) assignments above 30 MHz.
Consisted of 27 stations (3 owned and operated and up to 24 "phantom stations" – time leased on affiliated radio stations. WEAF chain: Broadcasting Company of America: Northeast and Midwest United States 1923–1926 Regional network of AT&T-owned radio stations with New York City radio station WEAF as its hub.
Broadcasting in the United States began with experiments with wireless transmission during the 19th century, with varying degrees of success. These transmissions were initially by radio hobbyists fascinated with the technology. Once techniques were perfected, radio became a necessity for military and commercial users alike.