• Year
  • 1967
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 90183

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

 Technical Specifications

  • Number of Transistors
  • 7
  • Main principle
  • Superheterodyne (common); ZF/IF 470 kHz
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Dry Batteries / 9 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical / Ø 5.38 inch = 13.7 cm
  • Power out
  • 0.5 W (unknown quality)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: B822A / B822B - Murphy Radio Ltd.; Welwyn
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 9.4 x 5.7 x 3.9 inch / 239 x 145 x 99 mm
  • Notes
  • 3-Band, 7 transistor portable battery power superhet.

    B822A: Grey moulded cabinet, white control knobs & push buttons.

    B822B: Brown-grey moulded cabinet, white control knobs & push buttons.

    Same as the Murphy Model TR146.

  • Net weight (2.2 lb = 1 kg)
  • 2.1 kg / 4 lb 10 oz (4.626 lb)
  • Literature/Schematics (1)
  • -- Original-techn. papers.
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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