2-krings voorzetapparaat voor WW ontvangst

Amroh NV (Radio Bulletin monthly), Muiden

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  • Year
  • 1949
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 254474

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • TRF with diode detector; none
  • Tuned circuits
  • 2 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Powered by external power supply or a main unit.
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: 2-krings voorzetapparaat voor WW ontvangst - Amroh NV Radio Bulletin
  • Shape
  • Chassis only or for «building in»
  • Notes

  • This model has 2 h.f. amplifiers (EF9 and EBF2) with aperiodic coupling with the detector by one of the diodes in the EBF2. The second diode is used for AGC (Automatic Gain Control).

    Box TK (see diagram) dampens the 2 given frequencies 722 and 995 kHz. Box TK is only to be used in case the transmitters for Hilversum I and Hilversum II locally give too strong reception.

    Note: the term "WW" stands for Realistic Reproduction (Dutch: Werkelijkheidsweergave).

    This model is designed to be connected to Amroh amplifier WW-5-S, which amplifies the audio signal and serves as power supply for the receiver."

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

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