• Country
• Brazil

• Manufacturer / Brand
• Douglas Radioelétrica S.A.; São Paulo

• Year
• 1950 ??

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

• Radiomuseum.org ID
• 273893

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

• Number of Tubes
• 5

• Valves / Tubes
• 6A8 6K7 6Q7 6F6 5Z4

• Main principle
• Superheterodyne (common); ZF/IF 465 kHz

• Wave bands
• Broadcast and Short Wave (SW).

• Power type and voltage
• Alternating Current supply (AC) / 220 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• from Radiomuseum.org
• Model: 23C circuit 2 - Douglas Radioelétrica S.A.;

• Notes

• MW = 540 - 1600 kHz
  SW = 5.8 - 18 MHz

  Tone control
  The model 23C from Douglas Radioelétrica has 6 distinct versions

  MODEL	CHARACTERISTIC
  23C circuit 1	6A8 converter, series connected filaments
  23C circuit 2	6A8 converter, parallel connected filaments (ac only)
  23C circuit 3	6K8 converter, series connected filaments
  23C circuit 4	12A8 converter, series connected filaments, field coil speaker
  23C circuit 5	12A8 converter, series connected filaments, PM speaker
  23C circuit 6	UCH42 converter, series connected filaments

   

• Literature/Schematics (1)
• - - Manufacturers Literature

• Author
• Model page created by Antonio Rabitti. See "Data change" for further contributors.

• Other Models

• Here you find 69 models, 17 with images and 69 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Douglas Radioelétrica S.A.; São Paulo