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Tesla gave the first public demontration of the radio
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The patent office in London patented “The improvements of transmitting electrical impulses and signals" for Marconi.
http://moneyweek.com/on-this-day-in-1897-marconi-is-awarded-a-patent-for-radio/ -
(I don't have an exact date, only the year)
http://www.history.com/topics/inventions/guglielmo-marconi -
Marceloni recieved a transmission from England at New foundland.
http://www.history.com/this-day-in-history/marconi-sends-first-atlantic-wireless-transmission -
This was the first act in the United States to require radio stations to be licenced by the federal government. The earlier ship acts only required that certain ships to have radio equipment installed.
http://earlyradiohistory.us/1912act.htm -
The transmission was conducted from the Metropolitan Opera House in New York City. This broadcast was considered unsuccesful, as the microphones couldn't pick up much of the opera singing.
http://famousdaily.com/history/first-public-radio-broadcast.html -
William Heina is granted a patent for the car radio.
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(I couldn't find a specific date)
There were many problems with this radio, and no one could afford it.
http://researchmaniacs.com/Automobile/HistoryFirstCarRadio.html -
Al goss invents the walkie talkie for the military. It is also known as the two way radio.
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Major Armstrong started the experimental styation that beghan to the first regular broadcast. http://www.oldradio.com/current/bc_fm.htm
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When WW2 began television stations shut down. It was up to Radios to report what was happening in the war.
http://www.personal.psu.edu/jtk187/art2/radio.htm -
Radio can now be edited. Live DJs are needed less, as songs can can be put together on a computer.
http://www.personal.psu.edu/jtk187/art2/radio.htm
