• Country
• Great Britain (UK)

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

• Year
• 1934

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 286080

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

• Number of Tubes
• 3

• Valves / Tubes
• 215SG HL2 220PT

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown)

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

• Power type and voltage
• Storage and/or dry batteries / 2 & 9 & 100 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8 inch = 20.3 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: KB 393 - Kolster Brandes Ltd. KB, K.B.,

• Dimensions (WHD)
• 485 x 288 x 218 mm / 19.1 x 11.3 x 8.6 inch

• Notes

• Voltages; LT+ (red lead) = 2 volts, LT- (black lead) (Lead Acid Accumulator)
  HT 1 + = 80 volts, HT 2 + = 100 volts.  (Tapped Winner family dry cell pack)
  GB 1 -1.5 volts, GB 2 -3 or -4.5 volts. (Tapped Grid Bias dry cell pack)
  HT- and BG+ to socket marked HT- or GB+

  Left knob on/off wave change, Top knob; outer = Tuning, inner = trimmer, Right knob = reaction.

• Author
• Model page created by Mike Edwards † 25.10.21. 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