• Country
• Great Britain (UK)

• Manufacturer / Brand
• Vidor Ltd.; Erith (Kent)

• Year
• 1953 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 144643

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

• Number of Tubes
• 4

• Valves / Tubes
• DK92 DF91 DAF91 DL94

• Main principle
• Superheterodyne (common); ZF/IF 475 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) / 200-250 / 7.5 & 90 Volt

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

• Material
• Various materials

• from Radiomuseum.org
• Model: Royal Ascot CN427 - Vidor Ltd.; Erith Kent

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

• Dimensions (WHD)
• 260 x 365 x 145 mm / 10.2 x 14.4 x 5.7 inch

• Notes

• Similar chassis to model CN421.

  The only differences obvious from CN421 are

  • Different source for Loudspeaker, capacitors, transformer
  • No "shoulders" on outside of case.
  • No earth wire on top of main smoothing capacitor to loop aerial
  • CN427 from s/n 10998 use 330 Ohms instead of 220 Ohms for output grid bias resistor on  - HT

• Net weight (2.2 lb = 1 kg)
• 4.1 kg / 9 lb 0.5 oz (9.031 lb)

• Source of data
• -- Schematic

• Circuit diagram reference
• Radio and TV Servicing books (R&TVS) book

• Author
• Model page created by Keith Staines. See "Data change" for further contributors.

• Other Models

• Here you find 146 models, 79 with images and 75 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Vidor Ltd.; Erith (Kent)