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A French ship-to-shore radio station in 1904. The invention of radio communication was preceded by many decades of establishing theoretical underpinnings, discovery and experimental investigation of radio waves, and engineering and technical developments related to their transmission and detection. These developments allowed Guglielmo Marconi ...
Radio in Mexico is a mass medium with 98 percent national penetration and a wider diversity of owners and programming than on television. In a model similar to that of radio in the United States, Mexican radio in its history has been largely commercial, but with a strong state presence and a rising number of noncommercial stations in the 2000s and early 2010s.
Audio broadcasting (1915 to 1950s) 1919: First clear transmission of human speech, (on 9XM) after experiments with voice (1918) and music (1917). 1920: Regular wireless broadcasts for entertainment began in Argentina, pioneered by the group around Enrique Telémaco Susini. 1920: Spark-gap telegraphy stopped.
Ana Cecilia Valdés Terrazas. Launch date. March 23, 1983. Official website. IMER official site. The Instituto Mexicano de la Radio (English: "Mexican Radio Institute") is a Mexican public broadcaster, akin to National Public Radio in the US. It is also known as IMER.
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.
Edwin Howard Armstrong(December 18, 1890[2]– February 1, 1954[3]) was an American electrical engineerand inventor who developed FM (frequency modulation) radio and the superheterodynereceiver system.
Radio Rebelde (English: Rebel Radio) is a Cuban Spanish-language radio station. It broadcasts 24 hours a day with a varied program of national and international music hits of the moment, news reports and live sport events. The station was set up in 1958 by Che Guevara in the Sierra Maestra region of eastern Cuba, and was designed to broadcast ...
Radio is the technology of communicating using radio waves. [ 1 ][ 2 ][ 3 ] Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates oscillating electrical energy, often characterized as a wave.