• Country
• Germany

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

• Year
• 1932–1934

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 7993

• Number of Tubes
• 1

• Valves / Tubes
• RGN354

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Bakelite case

• from Radiomuseum.org
• Model: L280G [Pressstoffgehäuse] - Nora, Aron, Heliowatt; Berlin

• Notes

•   

• Source of data
• Radiokatalog Band 1, Ernst Erb

• Circuit diagram reference
• Röhren in FS-Bestückungstabellen

• 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