• Country
• Switzerland

• Manufacturer / Brand
• Zellweger AG; Uster

• Year
• 1926/1927

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 13823

• Number of Tubes
• 8

• Valves / Tubes

• Main principle
• Superheterodyne (common)

• Wave bands
• Broadcast only (MW).

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

• Loudspeaker
• - For headphones or amp.

• from Radiomuseum.org
• Model: Ultradyne [Kofferapparat] - Zellweger AG; Uster

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes
• Empfänger Ultradyne von Zellweger Kofferapparat genannt, Empfang 200-600m, aufgeführt im 8seitigen Faltprospekt "3-, 4-, und 8-Lampen-Hochleistung-Empfänger" von Zellweger etwa um 1926

• Price in first year of sale
• 1,650.00 SFr

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

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Mentioned in
• Radios von gestern, 2. Auflage (173)

• Other Models

• Here you find 80 models, 59 with images and 25 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Zellweger AG; Uster