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A pocket watch is a watch that is made to be carried in a pocket, as opposed to a wristwatch, which is strapped to the wrist. They were the most common type of watch from their development in the 16th century until wristwatches became popular after World War I during which a transitional design, trench watches , were used by the military.
Jack Leroy Cooper (September 18, 1888 – January 12, 1970) was the first African-American radio disc jockey, [1] [2] [3] described as "the undisputed patriarch of black radio in the United States." [ 4 ] In 2012, he was inducted into the National Radio Hall of Fame .
In 1954, the Regency company introduced a pocket transistor radio, the TR-1, powered by a "standard 22.5 V Battery." In 1955, the newly formed Sony company introduced its first transistorized radio, the TR-55. [65] It was small enough to fit in a vest pocket, powered by a small battery. It was durable, because it had no vacuum tubes to burn out.
Music radio, particularly top 40, has often acted as both a barometer and an arbiter of musical taste, and radio airplay is one of the defining measures of success in the mainstream musical world. In fact, the rise of rock music to popularity is intimately tied to the history of music radio. Early forms of rock had languished in poor areas of ...
[15] (The Chicago Reader had previously reported, in November 2009, a mortgage total of $4.79 million "that'll come due in 2011.") [16] More than four and a half years later, in July 2017, Crain's revealed that the MBC's mortgage deadline had been pushed back from the end of 2015 to the end of 2017, and that as of August 2016 the museum "owed ...
In 1983, KDAY-AM became the first radio station to play wall-to-wall rap music, thanks to an ambitious new music director and some soon-to-be famous DJs. When L.A. invented rap radio: The rise of KDAY
1920s: Radio was first used to transmit pictures visible as television. 1926: Official Egyptian decree to regulate radio transmission stations and radio receivers. [40] Early 1930s: Single sideband (SSB) and frequency modulation (FM) were invented by amateur radio operators. By 1940, they were established commercial modes.
Arthur Bernard Leaner (June 30, 1908 – September 6, 1978), who was known professionally as Al Benson, was an American radio DJ, music promoter and record label owner in Chicago between the 1940s and 1960s. He was particularly significant for his promotion of rhythm and blues music and black involvement in the recording industry in Chicago. [1]