• Country
• Switzerland

• Manufacturer / Brand
• Deso, Dewald & Sohn, Dewald AG; Zürich

• Year
• 1937/1938

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 11826

• Number of Tubes
• 6

• Valves / Tubes
• 6A7 6D6 6B7 25B5 6N5 25Y5

• Main principle
• Superheterodyne (common); ZF/IF 470 kHz

• Power type and voltage
• AC/DC-set

• Loudspeaker
• Presumably Dynamic Loudspeaker (moving coil)

• from Radiomuseum.org
• Model: Tokio U 248U - Deso, Dewald & Sohn, Dewald AG

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

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Other Models

• Here you find 183 models, 114 with images and 153 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Deso, Dewald & Sohn, Dewald AG; Zürich