• Year
  • 1923
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 113837

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Storage and/or dry batteries / 12 +130 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: 8-A Microphone Amplifier - Western Electric Company Inc.;
  • Shape
  • Rack
  • Notes
  • Microphone amplifier for broadcasting purpose, in a metal rack of 1700 mm height. Sources contradicting for the last tube: either 205D or 205B. 205D apparently later replacement for the 205B.
  • Mentioned in
  • Electrical Communication Vol.3 No.2, January 1924
  • Author
  • Model page created by Georg Richter. See "Data change" for further contributors.

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