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Heinrich confirmed the theory of electromagnetism. This brought the creation of radio.
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Built the first successful wireless telegraphy system.
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The first AM radio broadcast on Christmas Eve, 1906 was playin O holy night on violin with bible verses. (Pictured is Reginald Fessenden)
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The Titanic sinking marked an event for the British Marconi factory to start building radios for blue-collar companies.
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Radio starts to play for the public's use in Argentina
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FM Radio and Singleside Band radio are invented by amateur radio operators.
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Television starts to become a thing during the 1940's because of the improvements to radio and other such discoveries.
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The pocket transistor radio is introduced into the public from Sony and Regency.
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Color Television becomes mainstream to the public with most programs broadcast in color.
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The Advanced Mobile Phone System analog was developed by Bell Systems and used from 1970's to 2000's.