• Country
• Great Britain (UK)

• Manufacturer / Brand
• Kolster Brandes Ltd. (KB, K.B., ITT); Foots Cray; GB

• Year
• 1937/1938

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 95878

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

• Number of Tubes
• 5

• Valves / Tubes
• 15D1 9D2 11D3 7D5 R2

• Main principle
• Superheterodyne (common); ZF/IF 464 kHz

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

• Power type and voltage
• Alternating Current supply (AC) / 200-260 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 8 inch = 20.3 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: KB 650 - Kolster Brandes Ltd. KB, K.B.,

• Shape
• Tablemodel, slant panel.

• Dimensions (WHD)
• 413 x 358 x 320 mm / 16.3 x 14.1 x 12.6 inch

• Notes

• The radio features an "Alphadex" tuning dial, this is designed so it has an alphabetical lookup for each of the radio stations.

  "Up-to-the-minute in technical design, the K B 650 incorporates several exclusive KB features. It will give excellent reception from stations in all parts of the world with reproduction of wonderfully realistic quality on all wave-bands. An outstanding example of KB value."

  Wave-ranges : I6.5-50, l95-550. 970-2300 metres.
  6 tuned circuits. “Whistle" eliminating input circuit. Illuminated three colour “Alphadex" tuning scale designed so it has an alphabetical lookup for each of the radio stations. Two-speed tuning. Sockets for gramophone pick-up. Volume control effective for radio and gramophone
  reproduction. Provision for external speaker. 8 in. high-fidelity moving coil speaker.
  Output 3 watts.
  200-250 volts A.C., 40-60 cycles.
  Walnut cabinet of distinctive modern design with figured centre panel and attractive controls. Dimensions: 14⅜ in. high, 16¼ in. wide, 12¾ in. deep.
  May be used with KB All-Wave “Rejectostat” aerial.

  PRICE: 11 GUINEAS

  See also KB 652

• Price in first year of sale
• 142.00 Hfl

• Source of data
• Technisch- Commercieel - Radio Vademecum Staleman

• Literature/Schematics (1)
• Trader Service Sheet (suppl. of Wireless & El. Trader, etc.) (288)

• Author
• Model page created by John Koster. See "Data change" for further contributors.

• Other Models

• Here you find 415 models, 372 with images and 253 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Kolster Brandes Ltd. (KB, K.B., ITT); Foots Cray; GB