• Year
  • 1928/1929
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 456
    • 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
  • 3
  • Main principle
  • TRF with regeneration; 2 AF stage(s)
  • Tuned circuits
  • 1 AM circuit(s)
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Direct Current supply (DC) / 220 Volt
  • Loudspeaker
  • Magnetic loudspeaker (reed) generic.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: NR III - Blaupunkt Ideal, Berlin,
  • Dimensions (WHD)
  • 520 x 260 x 250 mm / 20.5 x 10.2 x 9.8 inch
  • Notes
  • Trommelskala; kap.Rückk. [514, 560]
  • Net weight (2.2 lb = 1 kg)
  • 9.6 kg / 21 lb 2.3 oz (21.145 lb)
  • Price in first year of sale
  • 330.00 RM +
  • Circuit diagram reference
  • Lange + FS-Bestückungstabellen
  • Picture reference
  • Eine Abbildung findet sich im Doppelband "Radios von gestern"

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