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Radio broadcasting in the United States has been used since the early 1920s to distribute news and entertainment to a national audience. It was the first electronic "mass medium" technology, and its introduction, along with the subsequent development of sound movies, ended the print monopoly of mass media.During radio's "Golden Age" it had a major cultural and financial imp...


Italian inventor and engineer Guglielmo Marconi (1874-1937) developed, demonstrated and marketed the first successful long-distance wireless telegraph and in 1901 broadcast the first transatlantic ...


A timeline of United States inventions (1890–1945) encompasses the ingenuity and innovative advancements of the United States within a historical context, dating from the Progressive Era to the end of World War II, which have been achieved by inventors who are either native-born or naturalized citizens of the United States.


The term "radio" can refer to either the electronic appliance that we listen with or to the content that plays from it. In any case, it all started with the discovery of radio waves—electromagnetic waves that have the capacity to transmit music, speech, pictures, and other data invisibly through the air.


Intro to Mass Media Midterm. STUDY. PLAY. ... patents on their plans and new inventions for radio technologies. ... The film industry in the United States is unique from the radio, television, or telecommunications industries because it is the only industry that _____ .


Pioneering Amateurs (1900-1917) - Radio captured the imagination of thousands of ordinary persons who wanted to experiment with this amazing new technology. Until late 1912 there was no licencing or regulation of radio transmitters in the United States, so amateurs -- known informally as "hams" -- were free to set up stations wherever they wished.


Fessenden, a very prolific inventor, first experimented with voice transmission while working for the United States Weather Bureau. In 1900 he left what is now the University of Pittsburgh, where he was head of the electrical engineering department, to develop a method for the U.S. Weather Bureau to transmit weather reports.


A Short History of Radio With an Inside Focus on Mobile Radio Winter 2003-2004 If success has many fathers, then radio ... coming to the United States he sold the patent rights for his system of alternating-current dynamos, transformers, and motors to George ... and creator of FM radio invented the regenerative circuit, the first amplifying re- ...


The inventor ____ is credited with patenting the wireless telegraph that served as a direct precursor to radio technology. Guglielmo Marconi During the 1920's, the United States was the only country that allowed commercial interests to dominate early broadcasting.


Engineers keep finding more and more uses for radio, and frequencies never seem to end up on the scrap heap. You can even find Morse code transmissions still on the air. In 2009 analog broadcast TV will stop in the United States—but bidders are already lined up, preparing extravagant new uses for those slices of spectrum. “It’s marvelous ...