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Marconi is the first person to send a radio signal. He is just known as the guy because he said he did it. It was done in 1895.
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Reginald Fessenden experiments with modulation. It means a change. He was able to change the strength of frequencies.
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In the first two decades of the 20th century, AM radio was being developed. This would be used to send radio signals of voice. The idea of radio as entertainment develops as well.
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The audio tube is invented by Lee De Forest. The audio tube amplifies sound. This makes it possible to transmit sound through radio.
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This highlights the use of radio. If radio had not been with the ship, there would have been no survivors. Since radio was on the ship it makes it possible to send out rescue men.
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People start to make their own radio stations. Anyone could make their own radio station. All you needed was the equipment and the money.
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The use of call letters began. Call letters made it simple to identify stations. This was needed because for example, there could have been five "104.5"s, but there is only one "K104.5".
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The first radio show came out of Detroit. It was owned by The Detroit News. The station covered local election results.
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On November 2nd, 1920 the first commercial radio station, KDKA, was made. The commercials paid to keep the station going. KDKA was a news radio station, its first purpose was to cover an election, just like the station in Detroit.
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The start of the Great Depression and the war makes radio more important. The whole country looks to radio as a getaway. It made people feel like everything was okay.
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In 1930, Paul and Joseph Galvin, along with William Lear, developed the first car dashboard radio and named it the "Motorola". This made it possible to listen to music on the way to work. It also meant that people could just sit in a vehicle and listen to music.
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In 1933, FM radio is invented. This had a much higher, stronger frequency than AM. It took advantage of modulation and
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The best time for radio stations came to an end as more people started switching to digital. (T.V.)
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With everyone switching to T.V., music saves radio. Because of the F.M. frequency music is better heard. Now people started to use radio as a form of listening to music.
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The evolution of hip hop brings radio to light and transitions it. Everyone listened to the radio so that they could hear the hottest music. It gave artists major credit if their song played on the radio.
