• Country
• Brazil

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

• Year
• 1950 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 281281

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

• Number of Tubes
• 6

• Valves / Tubes
• 1LN5 or 1N5 1LA6 or 1A7 1LN5 or 1N5 1LN5 or 1N5 1LH4 or 1H5 1Q5

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

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

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 6 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• from Radiomuseum.org
• Model: 87A [car battery] - Douglas Radioelétrica S.A.;

• Notes

• The model 87A from Douglas Radiioelétrica has 2 distinct versions known in Brazil

  MODEL	CHARACTERISTIC
  87A circuit 1	Car battery power supply
  87A circuit 2	Dry battery power suppy

  Coils for models 87A 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.

• 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