1913 in radio

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The year 1913 in radio involved some significant events.

Events

• January 31 – 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 October 29 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.
• November 12 – 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

• May 25 – Richard Dimbleby, English broadcast news presenter (died 1965)
• May 31 – Peter Frankenfeld, German comedian (died 1979)
• June 25 – Cyril Fletcher, English comic monologuist (died 2005)
• July 6 – Gwyn Thomas, Welsh writer and broadcaster (died 1981)

Deaths

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