Undamped Wave Receiving Set No. 906

Doron Bros. Electric Co.; Hamilton, Ohio

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  • Year
  • 1921
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 370095
    • Brand: Super-Equidyne

 Technical Specifications

  • Number of Tubes
  • 1
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown)
  • Wave bands
  • Broadcast and LongWave in ONE range.
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Undamped Wave Receiving Set No. 906 - Doron Bros. Electric Co.;
  • Shape
  • Tablemodel, Box - most often with Lid (NOT slant panel).
  • Dimensions (WHD)
  • 24 x 12 x 7.5 inch / 610 x 305 x 191 mm
  • Notes

  • Doron Bros. No. 906 Undamped Wave Receiving Set radio. 

    No. 906: up to 8,000 meters

     

     

    Key Features:

    Tuner of special construction — coupling varied by the condenser on the right of the panel.

    • Contacts on the right vary the frequency of the vacuum tube oscillations.
    • Condensers and contacts on the left tune the set to the desired wave length.
    • Two variable condensers of special construction (approximately equal in capacity to the usual 43-plate types).
    • Audio or vacuum tube may be supported as illustrated, or our No. 365 Audio Receptacle will be supplied (unless otherwise specified).
    • No audio, “A”, or “B” batteries supplied unless specifically ordered.
    • Telephone receivers not furnished (any make of 2,000 or 3,000 ohms total resistance may be used).
    • Filament control switch, back-connected rheostat, and “B” battery control switch mounted on the panel.
    • Ideal for modern undamped (CW) stations both in this country and abroad. 
    • Cabinet: mahogany, hand-rubbed to a high polish. Size: 24" long × 12" high × 7½" deep.
    • Panel: polished black Formica.
    • Metal fittings: brass, silver-nickeled.
  • Net weight (2.2 lb = 1 kg)
  • 50 lb (50 lb 0 oz) / 22.7 kg
  • Price in first year of sale
  • 156.00 USD
  • Mentioned in
  • - - Manufacturers Literature (1921 Doron Brothers Electrical Catalog page 11)
  • Author
  • Model page created by Alan Larsen. See "Data change" for further contributors.

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