• Year
  • 1934
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 49901
    • alternative name: Operadio Mfg,

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

 Technical Specifications

  • Number of Tubes
  • 3
  • Wave bands
  • - without
  • from Radiomuseum.org
  • Model: 484B - Operadio Corp.; St. Charles IL
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 6 = 1935 and before

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