TT4

McMichael Radio Ltd.; Slough

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  • Year
  • 1954
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 104533
    • alternative name: McMichael, Leslie

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

 Technical Specifications

  • Number of Tubes
  • 5
  • 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
  • AC/DC-set / 195-215; 215-235; 235-255 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: TT4 - McMichael Radio Ltd.; Slough
  • Shape
  • Console, Highboy (legs > 50 %).
  • Dimensions (WHD)
  • 20.5 x 26.75 x 19.5 inch / 521 x 679 x 495 mm
  • Notes

  • Television table radio. Radio fitted into a table on casters designed to carry a television set.

    Sockets

    • PU /Gram
    • External speaker
    • Aerial / Earth.
    • 5 amp round pin mains out

    Other Dimensions

    • Shelf  7 ½  inches from floor
    • Depth of radio section 7 ¼  inches
    • Bottom of radio section 19 ½  inches from floor

    The loudspeaker and mains output sockets aren't shown on schematic so may be  modifications. The PU/Gram and Aerial/Earth are capacitor isolated from potentially live chassis.

    The voltage selector only changes the heater supply. HT varies with mains.

    Pilot Lamp is in series with heaters and is 6V 110mA (4V to 12V 150mA will work, current not voltage is the important aspect).

    Speaker is mounted facing down behind radio chassis.

    The lower shelf may be for the record player.

  • Circuit diagram reference
  • Radio and TV Servicing books (R&TVS) book
  • Mentioned in
  • -- Original-techn. papers.
  • Author
  • Model page created by Peter Hoddow. See "Data change" for further contributors.

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