Straight Five

Detex Distributors, Ltd.; London

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  • Year
  • 1930 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 243553

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Storage and/or dry batteries / 2 & 9 & 90 Volt
  • Loudspeaker
  • Magnetic loudspeaker (reed) generic.
  • Material
  • Leather / canvas / plastic - over other material
  • from Radiomuseum.org
  • Model: Straight Five - Detex Distributors, Ltd.;
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 378 x 245 x 335 mm / 14.9 x 9.6 x 13.2 inch
  • Notes

  • At least 90V HT (possibly 3 x 45V for 135V), 9V Grid Bias and LT uses 2V Lead Acid Accumulator.

    Valve line up from Mullard (1935)  and Marconi (1931) guides. Also known as Detex 5 and Detex portable 5.

    Rexine style covered plywood case, in at least two different colours (cyan or marbled wine).

    Dimensions include metal dome feet, handle, catches etc.

    Maker and Model is impressed/stamped (without ink) on floor of battery compartment and hardly visible without a pencil rubbing on paper.

    Straight Five.

    Two aperiodic H.F. stages, grid detector, and two transformer-coupled LF magnifiers. One tuning control with re-action.

    A low-priced suitcase portable of conventional design, in a case covered with fabric-blue, red, green Morocco, or imitation lizard, to choice.

    Fitted with 100 volt HT battery and 20 AHhour accumulator.

    Wireless World, Jun 11, 1933, page 608.

  • Price in first year of sale
  • 8.40 GB £
  • Author
  • Model page created by Clive Forder. See "Data change" for further contributors.

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