• Country
• Germany

• Manufacturer / Brand
• Aeriola Ges.m.b.H.; Berlin

• Year
• 1926/1927

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 13850

• • Brand: Radio-Baby

• Number of Tubes
• 2

• Valves / Tubes
• DuotronD2 Duotron

• Main principle
• TRF with regeneration; 1 Special; 2 AF stage(s)

• Tuned circuits
• 2 AM circuit(s)

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case, TUBES VISIBLE.

• from Radiomuseum.org
• Model: Duplex 2 - Aeriola Ges.m.b.H.; Berlin

• Notes
• 3fach-Spulenkoppler; 2 NF-Trafos

• External source of data
• E. Erb 3-907007-36-0

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Mentioned in
• Historische Radios Band III (21B)

• Picture reference
• Das Gerät ist im Doppelband "Historische Radios" von Günther Abele abgebildet.

• Other Models

• Here you find 32 models, 24 with images and 7 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Aeriola Ges.m.b.H.; Berlin