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The year 1913 in radio involved some significant events.
Events
[edit]- 31 January – Edwin Howard Armstrong first demonstrates the employment of three-element vacuum tubes in circuits that amplify signals to stronger levels than previously thought possible and that could also generate high-power oscillations usable for radio transmission. On 29 October he applies for a United States patent covering the regenerative circuit.[1][2]
- Spring – Lee de Forest utilizes the feedback principle operate a low-powered transmitter for heterodyne reception of the Federal Telegraph Company's arc transmissions.[2]
- 12 November – The International Convention for the Safety of Life at Sea is convened in London and produces a treaty requiring shipboard radio stations to be manned 24 hours a day.
- Late – Lee de Forest is acquitted of stock fraud in connection with the Radio Telephone Company in the United States.
- The Marconi Company initiates duplex transatlantic wireless communication between North America and Europe for the first time, transmitting from Marconi Towers at Louisbourg, Nova Scotia, to Letterfrack in Ireland.
- The cascade-tuning radio receiver is introduced.[3]
- Lee de Forest publishes a description of his Audion triode detecting or amplifying vacuum tube.[4]
Births
[edit]- 25 May – Richard Dimbleby, English broadcast news presenter (died 1965)
- 31 May – Peter Frankenfeld, German comedian (died 1979)
- 25 June – Cyril Fletcher, English comic monologuist (died 2005)
- 6 July – Gwyn Thomas, Welsh writer and broadcaster (died 1981)
Deaths
[edit]- November 6 – Sir William Henry Preece, Welsh wireless telegraph engineer (born 1834)
References
[edit]- ^ U.S. patent 1,113,149 which is granted on 6 October 1914.
- ^ a b Lewis, Tom (1991). Empire of the Air: the men who made radio. New York: Edward Burlingame Books. pp. 77, 87, 192. ISBN 0-06-098119-9.
- ^ "Radio/Broadcasting Timeline". CBN History. WCBN. Archived from the original on 2022-03-01. Retrieved 2019-10-23.
- ^ De Forest, Lee (1913). "The Audion — Detector and Amplifier". Proceedings of the Institute of Radio Engineers. 2. New York: 15–36.
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