History of Radio/Audio
Terms
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- 1844
- Samuel Morse: Morse Code
- 1873
- Maxwell Published "Theory of Electromagnetic Waves"
- 1876
- Alexander G. Bell invented telephone
- 1877
- Edison Labs Patented 1st recording devise
- 1888
- Hertz Demostrated existance of electromagnetic waves
- 1890's
- Poulson: Basic principals of magnetic recording
- 1894
- Marconi: 1st wireless transmission of morse code
- 1897
- Marconi went to England
- 1899
- 1st wireless transmission of England to France
- 1901
- 1st transatlantic transmission
- 904
- Fleming invented Diode
- 1906
- Fessden perfected voice over radio
- 1907
- DeForest invented the vacuume tube
- 1912
- Radio Act of 1912
- Radio Act of 1912
- Approved only 2 frequencies to be used
- 1916
- Sarnoff came up with the idea to broadcast to mass audiances
- 1920's
- electricity in most homes- made phonogrpah popular appliance
- 1920
- Conrad boradcasted music on nights and weekends-first DJ
- November 2, 1920
- first new boradcast announced that HArding was the new president, about 1,000 people heard station KDKA
- August 1922
- 1st commercial, selling real estate
- 1926
- radio becomes a national forum for news & pop culture
- 1927
- Radio Act of 1927
- Radio Act of 1927
- Created the Federal Radio Comission (FRC)
- 1930's
- process for FM invented
- 1934
- Equal time rule
- Communication Act of 1934
- FRC was replaced by Federal Communications Commission
- 1948-1987
- Fairness Doctrine
- Fairness Doctire
- required timeto controversial public issues and giving the opportunity for other views to be heard- abolished becasue it was unconstitutional
- Equal time rule
- provides political issues equal time if requested
- 1935
- Black aried in the Make Believe Ballroom becase the orchestra didn't show he played recorded tapes of the band
- 1940's
- Germans:1st magnetic recording process/tape
- 1947
- 1st US radio Program to use tape recording "the Bing Crosby show"
- 1950's
- stereo introduced
- 1960's
- Norel CO developed 1st audio cassette
- 1980's
- National Public Radio
- 1990'a
- introduced digital audio tape (DAT) technology & mini disc (MD) technology