• Country
• Germany

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

• Year
• 1929 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 257753

• • Brand: Mars

• Number of Tubes
• 4

• Valves / Tubes
• REN1004 REN1004 RE134 RGN504

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown); 2 AF stage(s)

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast (MW) and Long Wave.

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

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Wooden case

• from Radiomuseum.org
• Model: SO-N4 - Schneider-Opel AG, Radiowerke;

• Shape
• Tablemodel, slant panel.

• Dimensions (WHD)
• 270 x 190 x 340 mm / 10.6 x 7.5 x 13.4 inch

• Notes

• Netz-Empfänger für Wechselstrom, ähnlich Modell Eos III SO-N1.

• Author
• Model page created by Michael Mischke. See "Data change" for further contributors.

• Other Models

• Here you find 132 models, 91 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