Opera Ch= AM70

De Forest (DeForest) Crosley Radio, Consolidated Industries; Toronto

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  • Year
  • 1928/1929
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 160199

 Technical Specifications

  • Number of Tubes
  • 5
  • Valves / Tubes
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown); 1 AF stage(s)
  • Tuned circuits
  • 4 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Storage and/or dry batteries / 4.5 & 135 & 90 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Opera Ch= AM70 - De Forest DeForest Crosley
  • Notes
  • An AC power supply was available for this model. The Concerto, Sonata, Nocturne (High Boy) and Duet (Phono-Combo) are electronically identical to this model.
  • Circuit diagram reference
  • Radio College of Canada
  • Mentioned in
  • RCC De Forest -Crosley section page 5 & Cross Reference
  • Author
  • Model page created by Robin Roeckers. See "Data change" for further contributors.

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