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Nikola Tesla invented the radio.
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Reginald Fessenden
He spent much of his working life in the U.S. where he developed a way to combine sound and radio carrier waves. However, in 1906, using Alexanderson’s Alternator, Fessenden made the first longrange transmission of voice from Brant Rock, MA. -
Nikola took Marconis patent
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Lee DeForest
Credited with being the “father of American radio.” DeForest was a direct competitor to Marconi at the turn of the century (1899), when he was the chief scientist at the U.S.’s first radio firm—American Wireless Telephone and Telegraph—until Marconi took over the company’s assets in 1912 after a series of financial scandals. Although he held 300 patents, DeForest’s greatest technological contribution is considered to be his 1906 “Audion” vacuum tube. -
Edwin Armstrong
This WWI Army officer, Columbia University engineering professor, and creator of FM radio invented the regenerative circuit, the first amplifying receiver and reliable continuous-wave transmitter; and the superheterodyne circuit, a means of receiving, converting and amplifying weak, high-frequency electromagnetic waves. His inventions are considered by many to provide the foundation for cellular phones.The Businessmen: Guglielmo Marconi—this Italian creatorsp -
FM Radio was created
The UM decides it needs an FM station, and expresses a commitment to radio broadcasting -
The Music Radio
From radio's before, they were always used for listening to your favorite shows. But this one, it's often associated with rock-and-roll radio from the 1970s. This radio is also made more portable than the previous ones. -
The Big Boom Box
By 1980, the radio was made into a big boom box that was used to play music loud. People would carry this around on the streets with them. -
Todays Radio
Satellite radio knocked the previous year radios's off the charts. In the 2000s the XM Radio and Sirius Satellite Radio began. XM radio has over 170 crystal clear, digital channels, covering a wide range of entertainment from music to sports, news and talk shows. All channels are commercial free. The line-up also includes sports, entertainment, and original programming.
