• Year
  • 1958 ??
  • Category
  • Sound/Video Recorder and/or Player
  • Radiomuseum.org ID
  • 202049

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Number of Transistors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 110-220 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Protos BG12 - Siemens & Halske, -Schuckert
  • Shape
  • Tablemodel, with any shape - general.
  • Notes
  • Siemens Tonbandgerät Protos BG12, Paralellgerät mit Grundig TK20.
  • Source of data
  • -- Schematic
  • Author
  • Model page created by Josef Pilz. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Protos is part of the collections of the following members.

Museums

The model Protos can be seen in the following museums.

 Forum