• Year
  • 1957
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 130168
    • alternative name: Tobo Bruk, Tobo

 Technical Specifications

  • Number of Tubes
  • 4
  • Number of Transistors
  • 3
  • Semiconductors
  • Main principle
  • Superheterodyne (common)
  • Wave bands
  • Broadcast, Long Wave and Short Wave.
  • Power type and voltage
  • Dry Batteries / 6 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical
  • Power out
  • 0.2 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Nornan B1705 - Svenska Cykelfabriken, Varberg
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 273 x 200 x 90 mm / 10.7 x 7.9 x 3.5 inch
  • Notes
  • Transistors 3 x OC72 and diodes 2 x OA85. Batteries used: 8 x 1,5 Volt (but connected to give 6V) One transistor used as oscillator in powersupply to get higher voltage for tubes.
  • Price in first year of sale
  • 295.00 SEK
  • Source of data
  • -- Original prospect or advert

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