• Year
  • 1955
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 229514

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

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • Superheterodyne (common); ZF/IF 467.5 kHz; 2 AF stage(s)
  • Tuned circuits
  • 10 AM circuit(s)
  • Wave bands
  • Broadcast, Long Wave and Short Wave.
  • Power type and voltage
  • Alternating Current supply (AC) / 110; 127; 220 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 4.5 W (unknown quality)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Ombouwsuper Ratio III - Amroh NV Radio Bulletin
  • Shape
  • Chassis only or for «building in»
  • Notes
  • Model Ratio III offers an update for the older Pin-up models MK4349 and MK4350, just like model MK4355. However, model Ratio III has a different tube set (rimlock) and includes a magic eye for accurate tuning.

  • Author
  • Model page created by Rob Majoor. See "Data change" for further contributors.

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