De Forest Singing Arc Type Radiophone Transmitter, 1907

De Forest, Lee, 1873-19611907

The Henry Ford

The Henry Ford
Dearborn, MI, United States

Lee de Forest was a telecommunications inventor, responsible for the Audion vacuum tube. In 1907, his "radiophone" allowed phonograph music and human voice to broadcast wirelessly. The device used a "singing arc" to generate radio carrier signals. The US Navy purchased six radiotelephones for installation on the Great White Fleet. This is one of the earliest radiotelephones made by de Forest.


  • Title: De Forest Singing Arc Type Radiophone Transmitter, 1907
  • Creator: De Forest, Lee, 1873-1961
  • Date Created: 1907
  • Location: United States, New York, New York
  • Subject Keywords: United States. Navy, Communication, Radio (Telecommunication system), Radiophones, Radio transmitters
  • Type: Objects
  • Contributor: The Henry Ford
  • Original Source: Digital Collections
  • Patent Date: 1907
  • Object Name: Radiophone
  • Object ID: 40.581.6
  • Inventor: Lee De Forest
  • Invention: Radiophone
  • Image ID: THF156578
  • Field: Radio
  • Credit: From the Collections of The Henry Ford.

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