• Year
  • 1937/1938
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 159124

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

 Technical Specifications

  • Number of Tubes
  • 7
  • Main principle
  • Superheterodyne (common); ZF/IF 456 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast, Short Wave(s) and Police.
  • Power type and voltage
  • Alternating Current supply (AC) / 115 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • from Radiomuseum.org
  • Model: Dufferin Ch= 7D731 - De Forest DeForest Crosley
  • Notes
  • The 6X6 tube is used as a tuning indicator. The Rogers 12-70, 12-75, Majestic 770, De Forest Wellend and Victoria are electronically identical to this set. The Majestic 775 is identical with the exception of an added "Silent Tuning" switch.
  • Circuit diagram reference
  • Radio College of Canada
  • Mentioned in
  • RCC Rogers-Majestic section page 31, 30 & Cross Reference
  • Author
  • Model page created by Robin Roeckers. See "Data change" for further contributors.

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

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