• Country
• Portugal

• Manufacturer / Brand
• Radio Escola, Lisboa

• Year
• 1970

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 104263

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

• Number of Transistors
• 4

• Semiconductors
• OC71 OC71 OC72 OC72

• Wave bands
• - without

• Power type and voltage
• Storage and/or dry batteries / 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 10 cm = 3.9 inch

• Material
• Metal case

• from Radiomuseum.org
• Model: Sinfonia P4 - Radio Escola, Lisboa

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 220 x 150 x 80 mm / 8.7 x 5.9 x 3.1 inch

• Notes

• One of the listed transistors OC71 is used in the probe of this signal tracer.

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

• Price in first year of sale
• 880.00 Esc

• Mentioned in
• -- Original prospect or advert

• 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