• Country
• Austria

• Manufacturer / Brand
• Sommer AG, Otto; Wien

• Year
• 1928

• Category
• Detector-Radio (Crystal or diode, without tubes/transistors)

• Radiomuseum.org ID
• 10735

• Number of Tubes
• 1

• Valves / Tubes
• Tetrode

• Main principle
• Crystal or Solid State Detector; Crystal-detection 2 circuits (no tubes)

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast only (MW).

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Detektor-Empfänger + Verstärker - Sommer AG, Otto; Wien

• Notes
• mit HF- und NF-Verstärkung (Tetrode)

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

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Mentioned in
• Radio-Amateur Wien (RA, 46), (Österreichischer Radio Amateur, ÖRA) (2810)

• Other Models

• Here you find 26 models, 7 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sommer AG, Otto; Wien