Afstem-voorzetapparaat UN-47

Amroh NV (Radio Bulletin monthly), Muiden

  • Year
  • 1956
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • ID
  • 227652

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

 Technical Specifications

  • Number of Tubes
  • 0
  • Main principle
  • RF Converter/Adapter (not voltage converter); ZF/IF 471 kHz
  • Tuned circuits
  • 8 AM circuit(s)
  • Wave bands
  • Broadcast, Long Wave and Short Wave.
  • Power type and voltage
  • No Power needed
  • from
  • Model: Afstem-voorzetapparaat UN-47 - Amroh NV Radio Bulletin
  • Shape
  • Chassis only or for «building in»
  • Notes
  • The UN-47 is part of a superheterodyne which only exists of the antenna, oscillator and mixer stages, plus the first m.f. coil. The UN-47 functions as an early type of (wired) Remote Control to distance tune a normal superhet receiver. The 736 (see the first diagram) is a coil-block for LW, MW and SW reception. The superhet receiver showed in the first picture also contains the 736 coil-block.

    In the diagram one can see a second single m.f. coil which is connected to the m.f. coil in the superhet receiver. This second coil, 2 capacitors and a "normal/remote" function switch is built in the superhet receiver. The diagrams and pictures of this model will make clear how the UN-47 is working.

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

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