• Country
• Germany

• Manufacturer / Brand
• Tonfunk GmbH; Karlsruhe

• Year
• 1953–1955

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 17340

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 4

• Valves / Tubes
• DK92 DF91 DAF91 DL94

• Main principle
• Superheterodyne (common); ZF/IF 452 kHz

• Tuned circuits
• 6 AM circuit(s)

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

• Power type and voltage
• Storage and/or dry batteries / 75 & 1,5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6 cm = 2.4 inch

• Power out
• 0.2 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Violetta B50 - Tonfunk GmbH; Karlsruhe

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

• Dimensions (WHD)
• 237 x 152 x 59 mm / 9.3 x 6 x 2.3 inch

• Notes
• Sparschaltung.

• Net weight (2.2 lb = 1 kg)
• 1.1 kg / 2 lb 6.8 oz (2.423 lb)

• Price in first year of sale
• 99.00 DM

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

• Source of data
• Kat.d.Rundf.GrossH.1953/54 / Radiokatalog Band 2, Ernst Erb

• Other Models

• Here you find 569 models, 332 with images and 239 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tonfunk GmbH; Karlsruhe