• Country
• Great Britain (UK)

• Manufacturer / Brand
• RGD (Brand), Radio Gramophone Development Co. Ltd.; Birmingham

• Year
• 1958

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 243991

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

• Number of Tubes
• 4

• Valves / Tubes
• DK96 DF96 DAF96 DL96

• Number of Transistors

• Semiconductors
• Metal-rectifier

• 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) / 110-120; 190-250 / 1.4 & 90 Volt Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm

• Material
• Catalin (a brand name for a thermosetting polymer popular in the 1930s and 1940s - a phenol formaldehyde resin - like Bakelite, but a two-stage process with a lot of work afterwards).

• from Radiomuseum.org
• Model: B55 [MkII] - RGD Brand, Radio Gramophone

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 290 x 190 x 90 mm / 11.4 x 7.5 x 3.5 inch

• Notes

• See also the original  RGD B55 which is rexine style on plywood.

  Battery types: B126 - 90 V & AD35 - 1.4 V. The radio includes a "battery economy switch".

• Author
• Model page created by Michael Watterson. See "Data change" for further contributors.

• Other Models

• Here you find 148 models, 115 with images and 66 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from RGD (Brand), Radio Gramophone Development Co. Ltd.; Birmingham