• Year
  • 1940/1941
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 635
    • alternative name: Ideal-Radiotelephon- und App-fabr. || Ideal-Werke AG; Berlin (ab 1934)
    • Brand: Rotstern

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

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • Superhet with RF-stage; ZF/IF 468 kHz
  • Tuned circuits
  • 7 AM circuit(s)
  • Wave bands
  • Broadcast, Long Wave and more than two Short Wave bands.
  • Power type and voltage
  • Alternating Current supply (AC) / 110-240 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 7W740D - Blaupunkt Ideal, Berlin,
  • Shape
  • Tablemodel, low profile (big size).
  • Dimensions (WHD)
  • 565 x 405 x 312 mm / 22.2 x 15.9 x 12.3 inch
  • Notes
  • Variable Bandbreite, Stations-Drucktasten. Siehe auch vorjähriges Modell 7W79D.

  • Net weight (2.2 lb = 1 kg)
  • 16.9 kg / 37 lb 3.6 oz (37.225 lb)
  • Source of data
  • Radiokatalog Band 1, Ernst Erb
  • Circuit diagram reference
  • Lange+Schenk+FS-Röhrenbestückung

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