• Country
• Germany

• Manufacturer / Brand
• Tonfunk GmbH; Karlsruhe

• Year
• 1950/1951

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 17310

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

• Number of Tubes
• 5

• Valves / Tubes
• ECH4 EBF2 EL11 AZ1 EM4

• Main principle
• Superheterodyne (common); ZF/IF 472 kHz

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and Short Wave.

• Power type and voltage
• Alternating Current supply (AC) / 110; 125; 150; 220; 240 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 18 cm = 7.1 inch

• Material
• Bakelite case

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

• Dimensions (WHD)
• 493 x 325 x 250 mm / 19.4 x 12.8 x 9.8 inch

• Notes
• Das Triodensystem der EM 4 wird für die NF - Verstärkung mitbenutzt.

• Net weight (2.2 lb = 1 kg)
• 10 kg / 22 lb 0.4 oz (22.026 lb)

• Price in first year of sale
• 228.00 DM

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

• Source of data
• Kat.d. Rundf.Gr.Handel 1950/51 / Radiokatalog Band 2, Ernst Erb

• Mentioned in
• Funkschau (5016)

• Other Models

• Here you find 570 models, 333 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