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Timeline
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The first to prove an existence of an electromagnetic wave. He then published his findings an became director of the Cavendish Research Laboratory.
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It is a long time period between Maxwell to Hertz. But, Hertz then detects and produces radio waves.
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Marconi builds his first radio equipment that can ring from 30 feet away.
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He establishes the first radio link between England and France.
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An American scientist transmits human speech through radiowaves.
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He transmits telegraphic radio messages from Cornwall to Newfoundland.
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First radio transmission of music at Graz, Austria.
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Marconi invents the directional radio antennae.
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First radio program of music and voice broadcast in the U.S. by R.A. Fessenden.
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Radio communications gain publicity when the captain of the Montrose alerts Scotland via radio of an escaping criminal.
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Armstrong develops the superheterodyne radio receiver. The principle for this receiver is the basis for all radio receivers now in use.
A 200 kW alternator starts operating at Station NFF, the Naval station in New Brunswick NJ, which was the most powerful radio transmitter of the time. -
KDKA broadcasts the first regular licensed radio broadcast out of Pittsburgh, PA.
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Re-assigns stations to clear frequencies and makes radio stations operate in the public's interest.
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A radio statio in NYC, WRNY begins to broadcast television shows.
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FM radio is born, but only in mono.
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Television is born. FM is moved from its original home of 42-50 Mhz to 88-108 Mhz to make room for TV.
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Sony offers a miniature transistor radio. This is one of the first mass-produced consumer AM/FM radios.
The studios in the UM dormitories jorn forces, and "The Campus Broadcasting Network" is born as WCBN-AM. -
The number of radio receivers in the world exceeds the number of newspapers printed daily.
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United States radio stations begin broadcasting in stereophonic sound.
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The launch of Telstar proved to be a major milestone in satellite development.
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In Europe, FM radio stations begin to use the subcarrier signal of FM radio to transmit digital data. This RDS (radio data system) is used to transmit messages on display screens to radios. This allows the display of the stations, artist, and song information.
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Radio experimenters begin to use computers with audio cards to process radio signals, and the first digital transmissions begin to be broadcasted.
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Sonic Wave becomes the first internet radio station.
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Pandora Radio is found.
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The Podcasting success caused radio businesses to reconsider established preconceptions about audiences, production, and distribution.
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Ditches radio for Sirius Satellite Radio.
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Spotify adds radio onto its business.
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All of this history leads to today. The Radio can be accessed through any mobile device and in any car. Most people now use bluetooth speakers to play the music of their choice through endless choices of music apps. But, the radio is still limited to your location if it is being played through your car.
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I would predict that radios in cars will evolve from being touchscreen and bluetooth. My prediction is that it all possibly become voice activated without flaws, and/or it becomes a 3-D visual.
