• Year
  • 1935/1936
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 7937

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

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • TRF with regeneration; 1 AF stage(s)
  • Tuned circuits
  • 1 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Alternating Current supply (AC) / 110; 125; 150; 220; 240 Volt
  • Loudspeaker
  • Magnetic loudspeaker (reed) of high quality (free mooving - only possible past 1931).
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Undine 4 W204L - Nora, Aron, Heliowatt; Berlin
  • Shape
  • Tablemodel, high profile (upright - NOT Cathedral nor decorative).
  • Dimensions (WHD)
  • 370 x 385 x 245 mm / 14.6 x 15.2 x 9.6 inch
  • Notes
  • Eisenkernspulen
  • Net weight (2.2 lb = 1 kg)
  • 10 kg / 22 lb 0.4 oz (22.026 lb)
  • Price in first year of sale
  • 145.00 RM
  • Circuit diagram reference
  • Lange+Schenk+FS-Röhrenbestückung
  • Literature/Schematics (1)
  • -- Schematic (OTO-Schaltungen)

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The model Undine 4 is part of the collections of the following members.

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