• Year
  • 1950 ??
  • Category
  • Kit (Parts plus instruction) or building instructions only
  • Radiomuseum.org ID
  • 186820
    • alternative name: Douglas Argentina

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superheterodyne (common); ZF/IF 465 kHz; 2 AF stage(s)
  • Tuned circuits
  • 7 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • AC/DC-set / 220 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Power out
  • 3.8 W (unknown quality)
  • from Radiomuseum.org
  • Model: 31M-3 - Laboratorios Douglas S.A.C.I.;
  • Notes
  • Onda larga, del tipo ambas corrientes, con válvulas serie S-150, tandem 3x410pF sin trimers.
  • Source of data
  • - - Manufacturers Literature

 Collections | Museums | Literature

 Forum