• Country
• Germany

• Manufacturer / Brand
• Schneider-Opel AG, Radiowerke; Frankfurt a.M., später Berlin

• Year
• 1926/1927

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 16907

• • Brand: Mars

• Number of Tubes
• 4

• Valves / Tubes

• Main principle
• TRF without regeneration; 1 Special; 2 AF stage(s)

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: 4-Rö-Empf. - Schneider-Opel AG, Radiowerke;

• Notes
• Truhe;Sek-Empf.

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

• Source of data
• Kat. Julius Jessel 1926/27 / Radiokatalog Band 2, Ernst Erb

• Other Models

• Here you find 133 models, 92 with images and 20 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Schneider-Opel AG, Radiowerke; Frankfurt a.M., später Berlin