• Country
• Finland

• Manufacturer / Brand
• Telefunken, Helsinki

• Year
• 1934

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 286434

• Number of Tubes
• 6

• Valves / Tubes
• CK1 CF2 CB1 CF1 CL2 CY2

• Main principle
• Superheterodyne (common); ZF/IF 125 kHz

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

• Power type and voltage
• AC/DC-set / 110; 120; 130; 150; 220; 240 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 20 cm = 7.9 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: 657GWK - Telefunken, Helsinki

• Shape
• Tablemodel, high profile (upright - NOT Cathedral nor decorative).

• Dimensions (WHD)
• 360 x 418 x 226 mm / 14.2 x 16.5 x 8.9 inch

• Author
• Model page created by Timo Rantasaari. See "Data change" for further contributors.

• Other Models

• Here you find 21 models, 20 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Telefunken, Helsinki