2

Operadio Corp.; St. Charles (IL)

Data
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  • Year
  • 1923/1924
perfect model
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 49892
    • alternative name: Operadio Mfg,

 Technical Specifications

  • Number of Tubes
  • 6
  • Tuned circuits
  • 1 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Dry Batteries
  • Loudspeaker
  • Horn
  • Material
  • Leather / canvas / plastic - over other material
  • from Radiomuseum.org
  • Model: 2 - Operadio Corp.; St. Charles IL
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Notes

  • The original tube line up has to be UV199 if this model has arrived in 1923:

    The "Saga of the vacuum tube" by Tyne tells us on page 314: "In April 1925 the UV199 was superseded by the UX199, announced August 1, 1925. Production continued up to 1931, although after 1927 few new receivers were built to use it. Nickel-plated contact pins were introduced in 1927."

    After some time the UX tubes were noted only by the numbers and a bit later only by the last two digits. The UV199 was introduced in December 1922, the same time as the UV201A.

  • Price in first year of sale
  • 190.00 $
  • External source of data
  • Ernst Erb
  • Literature/Schematics (2)
  • Radio Broadcast, Jul. 1924, p. 274

 Collections | Museums | Literature

Collections

The model 2 is part of the collections of the following members.

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