Double Two Mk2

Regentone Products / Radio Television; Romford, Isleworth, London

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  • Year
  • 1957
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 249653

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Superheterodyne (common); ZF/IF 470 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Line / Batteries (any type) / 115; 200; 220; 240 / 1.5 & 90 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical / Ø 5 inch = 12.7 cm
  • Material
  • Bakelite case
  • from Radiomuseum.org
  • Model: Double Two Mk2 - Regentone Products / Radio
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 273 x 95 x 90 mm / 10.7 x 3.7 x 3.5 inch
  • Notes

  • There are two slightly different chassis. We call them Mk1 and Mk2.
    This later model employs the Mk2 chassis, the 1st IF-filter is above valve V1, and the 2nd IF-filter is above valve V2
    (The Mk1 chassis released in 1956, the 1st IF-filter below valve V1, and the 2nd IF-filter below valve V2.)

    There are some other minor changes, they are explained in the Trader Service sheet "1381".

    Battery or mains AC/DC. Price £13.12s. 11d. plus tax.

    Similar or identical chassis to the RGD B55 (RGD took over Regentone in 1950s before in turn being acquired by ITT/STC owners of Brimar, Schaub-Lorenz and Kolster Brandes). Compare very similar case Schaub Polo 9005 (different Chassis). Polo was later used as name for a range of ITT UK & Germany transistor sets.

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