• Country
• Germany

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

• Year
• 1928/1929

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 8114

• Number of Tubes
• 3

• Valves / Tubes

• Main principle
• Audio-Amplification

• Power type and voltage
• Alternating Current supply (AC) / 110-220 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

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

• Notes
• 306-58:3-Rö-Kraftverstärker

• Source of data
• Radio-Diehr, Berlin, 1928/1929 / Radiokatalog Band 1, Ernst Erb

• 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