• Country
• Argentina

• Manufacturer / Brand
• Laboratorios Douglas S.A.C.I.; Buenos Aires

• Year
• 1933 ?

• Category
• Kit (Parts plus instruction) or building instructions only

• Radiomuseum.org ID
• 116976

• • alternative name: Douglas Argentina

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

• Number of Tubes
• 5

• Valves / Tubes
• 77 78 77 43 25Z5

• Main principle
• Superheterodyne (common); ZF/IF 175 kHz

• Tuned circuits
• 3 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• AC/DC-set / 220 Volt

• Loudspeaker
• Ø 5 inch = 12.7 cm

• Power out
• 2.5 W (unknown quality)

• from Radiomuseum.org
• Model: 10 - Laboratorios Douglas S.A.C.I.;

• Notes

• First three tubes must be shielded. Set has 3 coils: Preselector, Autooscilator and F. Intermedia. According tu the tube line up, the model is 1933 or younger. Early type superhet with one 77 acting as oscilator/mixer and another 77 acting as plate characteristic detector.

  The schematic shows a 25Z5, not 25Z6 and therefore 1933 may be true.

• Mentioned in
• - - Manufacturers Literature

• Author
• Model page created by Mario Bermejo. See "Data change" for further contributors.

• Other Models

• Here you find 121 models, 8 with images and 81 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Laboratorios Douglas S.A.C.I.; Buenos Aires