• Country
• Germany

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

• Year
• 1925/1926

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 3797

• Number of Tubes
• 1

• Valves / Tubes

• Main principle
• Audio-Amplification

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• - For headphones or amp.

• from Radiomuseum.org
• Model: N1a - Nora, Aron, Heliowatt; Berlin

• Source of data
• Radiokatalog Band 1, Ernst Erb

• Mentioned in
• Funkgeschichte der GFGF (9072)

• 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