Double Slide Tuning Coil No. 422

Doron Bros. Electric Co.; Hamilton, Ohio

Data
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Pictures
Collections

  • Year
  • 1921
  • Category
  • Radio module pre 1926 (not a part, not a key)
  • Radiomuseum.org ID
  • 370040
    • Brand: Super-Equidyne

 Technical Specifications

  • Main principle
  • Tuner pre 1926 (not a wave trap)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Double Slide Tuning Coil No. 422 - Doron Bros. Electric Co.;
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 11.5 x 5 x 5 inch / 292 x 127 x 127 mm
  • Notes

  • Doron Bros. Double Slide Tuning Coil N0. 422

    Description:
    High-grade tuner with no wood in its construction.

    • Winding: green silk-covered copper wire, 3½ inches in diameter and 9 inches long.
    • Slider rods, sliders, and binding posts: brass, heavily silver-nickeled.
    • Sliders: special construction for good contact without undue wear.
    • Slider tops: hard rubber.
    • Coil heads: polished black electrode.
    • Size, over all: 5 × 5 × 11½ inches.

    Can be used as a single or two-slide tuner, or as a loading coil with any receiving transformer to increase wave length. 

  • Net weight (2.2 lb = 1 kg)
  • 4 lb (4 lb 0 oz) / 1.816 kg
  • Price in first year of sale
  • 10.00 USD
  • Mentioned in
  • - - Manufacturers Literature (1921 Doron Brothers Electrical Catalog page 6)
  • Author
  • Model page created by Alan Larsen. See "Data change" for further contributors.

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The model Double Slide Tuning Coil is part of the collections of the following members.

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