• Country
• Portugal

• Manufacturer / Brand
• Radio Escola, Lisboa

• Year
• 1975 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 78688

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

• Number of Transistors
• 3

• Semiconductors
• OC171 OC171 AC128

• Power type and voltage
• Storage and/or dry batteries / 2 x 4,5 Volt

• Material
• Metal case

• from Radiomuseum.org
• Model: Sinfonia O4 - Radio Escola, Lisboa

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 255 x 160 x 80 mm / 10 x 6.3 x 3.1 inch

• Notes

• Ranges:
  A 130-370 kHz,
  B 360-1000 kHz,
  C 1-2,5 MHz,
  D 2,5-7 MHz,
  E 6,5-20 MHz;
  Calibrated harmonics: 20-60 MHz

• Net weight (2.2 lb = 1 kg)
• 1.6 kg / 3 lb 8.4 oz (3.524 lb)

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

• Other Models

• Here you find 28 models, 27 with images and 17 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio Escola, Lisboa