• Year
  • 1936/1937
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 30779

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superheterodyne (common); ZF/IF 450 kHz
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Mono Unda 537 - Unda Radio; Como, Dobbiaco
  • Shape
  • Tablemodel, high profile (upright - NOT Cathedral nor decorative).
  • Dimensions (WHD)
  • 360 x 440 x 290 mm / 14.2 x 17.3 x 11.4 inch
  • Notes
  • Selettività: 1/900. Sensibilità: 15 uV. Frequenza intermedia: il Radiolibro indica 450 kHz; il Servizio Radiotecnico indica 490 kHz.

    Controllo di tono on/off. Ingresso Fono.
    Inserito uno schema su cui è stata corretta una piccola imperfezione.

  • Literature/Schematics (1)
  • -- Original-techn. papers. (D.E. Ravalico: Servizio Radiotecnico vol. II. Radioriparazioni. 8^ Edizione. Hoepli, Milano, 1952.)
  • Author
  • Model page created by Alessandro De Poi. See "Data change" for further contributors.

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