• Country
• Portugal

• Manufacturer / Brand
• Radio Escola, Lisboa

• Year
• 1965 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 78662

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

• Number of Transistors
• 4

• Semiconductors
• OC71 or. AC134 OC71 or. AC134 OC72 or. AC142 OC72 or. AC142

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Dry Batteries / 2x4,5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 12 cm = 4.7 inch

• Material
• Metal case

• from Radiomuseum.org
• Model: Sinfonia P3 - Radio Escola, Lisboa

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 215 x 145 x 79 mm / 8.5 x 5.7 x 3.1 inch

• Notes

• One of the listed transistors OC71 and a diode OA70 is used in the external RF probe.

   

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 10, 1950

• Author
• Model page created by Jose Duarte Costa. 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