Transistor Tweekringer

Amroh NV (Radio Bulletin monthly), Muiden

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  • Year
  • 1956
  • Category
  • Kit (Parts plus instruction) or building instructions only
  • Radiomuseum.org ID
  • 125409

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

 Technical Specifications

  • Number of Transistors
  • 5
  • Main principle
  • TRF with regeneration; 3 AF stage(s)
  • Tuned circuits
  • 2 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Dry Batteries / 6 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Transistor Tweekringer - Amroh NV Radio Bulletin
  • Shape
  • Chassis only or for «building in»
  • Notes
  • Bauanleitung für Transistor-Zweikreiser mit fünf Germanium-Transistoren: 1 x 2N412, 2 x 2N406, 2 x 2N408, und ein Germanium-Diode: 1 x OA73. Man brauchte Ferrit-Antenne, "MuCore 402" Spule der Firma Amroh, Transistor-Balans-Ausgangstransformator (Amroh U88) und Transistor-Balans-Eingangstransformator (Amroh B.I.44). Die Einstellung des RF-Transistors V1 mußte man ausprobieren (R2 anpassen so daß Emitterspannung von V1 = 1V). Gute Audio-Qualität, mit aussen-Antenne und Erde auch guter Empfang.
  • Mentioned in
  • - - Manufacturers Literature (Electronicus, "De Transistor in Theorie en Praktijk", Bussum: De Muiderkring, 1956, pp.108-113.)
  • Author
  • Model page created by Aren van Waarde. See "Data change" for further contributors.

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