• Country
• Germany

• Manufacturer / Brand
• Nora, Aron, Heliowatt; Berlin

• Year
• 1938/1939

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 7863

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

• Number of Tubes
• 6

• Valves / Tubes
• EF13 ECH11 EBF11 EL11 EFM11 AZ11

• Main principle
• Superhet with RF-stage; ZF/IF 468 kHz

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and 2 x Short Wave.

• Power type and voltage
• Alternating Current supply (AC) / 110, 125, 220, 240 Volt

• Loudspeaker
• 2 Loudspeakers

• Material
• Wooden case

• from Radiomuseum.org
• Model: Dux W78 - Nora, Aron, Heliowatt; Berlin

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 640 x 460 x 320 mm / 25.2 x 18.1 x 12.6 inch

• Notes
• var.BBr.;KW=13-85m

• Price in first year of sale
• 360.00 RM

• Source of data
• Handbuch WDRG 1938 / Radiokatalog Band 1, Ernst Erb

• Circuit diagram reference
• Lange+Schenk+FS-Röhrenbestückung

• Mentioned in
• Funkschau (1939 Heft 10 (Beschreibung))

• Other Models

• Here you find 633 models, 556 with images and 342 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Nora, Aron, Heliowatt; Berlin