• Year
  • 1935
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 42735
    • Brand: Grunow (trade name)

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 465 kHz
  • Wave bands
  • Broadcast, Short Wave(s) and Police.
  • Power type and voltage
  • Storage and/or dry batteries / 2 ; 9 ; 45 ; 135 Volt
  • Loudspeaker
  • Magnetic loudspeaker (reed) generic. / Ø 8 cm = 3.1 inch
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Grunow 720 Ch= 7-DB - General Household Utilities Co
  • Shape
  • Tablemodel, with any shape - general.
  • Notes
  • 2 Volt Farm radio.
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 7 = 1936 and before

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