• Year
  • 1925
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 49890
    • alternative name: Operadio Mfg,

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

 Technical Specifications

  • Number of Tubes
  • 6
  • Valves / Tubes
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown)
  • Power type and voltage
  • Dry Batteries
  • from Radiomuseum.org
  • Model: 1925 - Operadio Corp.; St. Charles IL
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Notes
  • Two dials (primary tuning control knobs)

    This radio was also exported to Australia in 1925-26.

  • Price in first year of sale
  • 189.00 $
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

 Collections | Museums | Literature

Collections

The model 1925 is part of the collections of the following members.

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