1913 in radio

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The year 1913 in radio involved some significant events.

Events

• 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.
• Spring – Lee de Forest utilizes the feedback principle operate a low-powered transmitter for heterodyne reception of the Federal Telegraph Company's arc transmissions.
• 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.
• Lee de Forest publishes a description of his Audion triode detecting or amplifying vacuum tube.

Births

• 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

• November 6 – Sir William Henry Preece, Welsh wireless telegraph engineer (born 1834)