History of radio | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-10-02

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/History_of_radio


00:00:26 1 Summary
00:00:35 1.1 Invention
00:03:28 1.2 19th century
00:06:23 1.2.1 Hertzian waves
00:11:20 1.2.2 Marconi
00:13:58 1.3 20th century
00:21:13 2 Start of the 20th century
00:22:24 2.1 Julio Cervera Baviera
00:24:28 2.2 British Marconi
00:25:34 2.3 Telefunken
00:26:23 2.4 Reginald Fessenden
00:27:10 2.5 Ferdinand Braun
00:27:32 2.6 Charles David Herrold
00:30:11 2.7 Harold J. Power
00:30:50 2.8 Edwin Armstrong
00:31:45 3 Wavelength (meters) vs. frequency (kilocycles, kilohertz)
00:33:13 4 Audio broadcasting (1919 to 1950s)
00:33:26 4.1 Crystal sets
00:34:33 4.2 The first vacuum tubes
00:36:35 4.3 Political interest in the United Kingdom
00:37:41 4.4 Licensing of radio stations in the U.S.
00:39:14 4.5 Licensed commercial public radio stations
00:46:35 4.6 FM and television start
00:47:39 4.7 FM in Europe
00:48:55 5 Later 20th-century developments
00:49:57 5.1 Color television and digital
00:51:25 5.2 Telex on radio
00:53:08 5.3 Mobile phones
00:54:24 6 Broadcast and copyright
00:58:02 7 Exotic technologies
00:58:17 8 See also



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SUMMARY
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The early history of radio is the history of technology that produces and uses radio instruments that use radio waves.  Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of broadcasting.