68 circuit 4

Douglas Radioelétrica S.A.; São Paulo

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  • Year
  • 1950 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 281137

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

 Technical Specifications

  • Number of Tubes
  • 6
  • 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: 68 circuit 4 - Douglas Radioelétrica S.A.;
  • Notes

  • The model 68 from Douglas Radiioelétrica has 6 distinct versions known in Brazil

    MODEL

    CHARACTERISTIC

    68 circuit 1

    6A8 converter - ac dc power supply

    68 circuit 2

    6A8 converter - ac power suppy - magic eye

    68 circuit 3

    12A8 converter - ac dc power supply

    68 circuit 4

    6K8 converter - ac power supply

    68 circuit 5

    6A8 converter - ac power supply

    68 circuit 6

    9 tube radio (6F6 push pull)

    Coils for models 68 were disigned to have RF amplifier stage (preselector)

    Supplied in kit format   Rádio receptor fornecido em kit

  • Literature/Schematics (1)
  • Manufacturer literature
  • Author
  • Model page created by Antonio Rabitti. See "Data change" for further contributors.

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