• Year
  • 1955
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 253831

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

 Technical Specifications

  • Number of Tubes
  • 9
  • 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

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