Direct Drive Knob and Dial 844

Eddystone (Brand), Stratton and Co., Ltd., Eddystone Radio Ltd.; Birmingham

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  • Year
  • 1950–1960 ??
  • Category
  • Radio part (not a module) 
  • Radiomuseum.org ID
  • 357046

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Special material, described in the notes.
  • from Radiomuseum.org
  • Model: Direct Drive Knob and Dial 844 - Eddystone Brand, Stratton and
  • Shape
  • Chassis only or for «building in»
  • Dimensions (WHD)
  • 51 x 51 x 22 mm / 2 x 2 x 0.9 inch
  • Notes

  • Although it can be used for other purposes, the Eddystone Cat No 844 Direct Drive Knob and Dial was primarily intended for the control of variable capacitors in radio transmitters and instruments. The anodised satin-finished 2" diameter dial is made of hard aluminium, and it is fixed to a 1 5/16" diameter black bakelite fluted knob. The eleven black major scale markings cover 180˚ and are numbered 0 to 10 anti-clockwise, and there are a further ten sub-divisions. The knob has a brass bush for 1/4" control shafts and a single plated steel grub screw. A matching index pillar was provided.

    A similar component with Cat No 638 was available in 1949. In the 1954 Eddystone Radio Products catalogue the illustration was labelled 872, overlain with an 844 sticker. Popular in 1950s designs, the component was no longer in production by 1961.

  • Net weight (2.2 lb = 1 kg)
  • 0.025 kg / 0 lb 0.9 oz (0.055 lb)
  • Mentioned in
  • - - Manufacturers Literature (Eddystone Radio catalogues)
  • Author
  • Model page created by Bruce Taylor. See "Data change" for further contributors.

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The model Direct Drive Knob and Dial is part of the collections of the following members.

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