LG40

• Country
• Great Britain (UK)

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

• Year
• 1955

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 253831

• Picture
• Schematics

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

• Number of Tubes
• 9

• Valves / Tubes
• 12AT7 12AH8 6BA6 6AL5 6AT6 12AX7 6BW6 6BW6 5Z4G

• Main principle
• Superheterodyne (common); ZF/IF 422/10700 kHz

• Wave bands
• Broadcast, Long Wave, Short Wave plus FM or UHF.

• Details
• Changer (Record changer)

• Power type and voltage
• Alternating Current supply (AC) / 200 - 250 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 10 inch = 25.4 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: LG40 - Kolster Brandes Ltd. KB, K.B.,

• Shape
• Console with any shape - in general

• Dimensions (WHD)
• 990 x 890 x 410 mm / 39 x 35 x 16.1 inch

• Notes

• FM range 87.5 to 100 MHz, SW range 52 to 16m.

  Fitted with either the Garrard RC80M or the Collaro RC54 auto changers.

  A feature of this model of radiogram, and some other models,  is the inclusion of KB's patented "Slot Diffuser".

  "To improve high frequency response and diffusion, the aperture 6 in a loud-speaker baffle is reduced to a slot having a width no more than half the length. As an example, for maximum diffusion up to 8 kc/s., the width is about 1 inches. A composite slot having a maximum width of this order may be used, Fig. 5 (not shown)"
  See photo on this models page

  For more details on this patent see Improvements in or relating to loudspeakers

• 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