• Country
• Great Britain (UK)

• Manufacturer / Brand
• Bush Radio; London

• Year
• 1977 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 226333

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

• Number of Transistors
• 14

• Semiconductors

• Main principle
• Superheterodyne (common); ZF/IF 470/10700 kHz

• Wave bands
• Broadcast, Long Wave and FM or UHF.

• Power type and voltage
• Line / Storage batteries (perhaps also batteries) / 240 / 4 x 1,5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Power out
• 0.6 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Sigma Four BV5770CA - Bush Radio; London

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

• Dimensions (WHD)
• 270 x 228 x 88 mm / 10.6 x 9 x 3.5 inch

• Notes

• Includes the VHF Aircraft/Weather Sat/Amateur 2m bands in one range: 114MHz - 146MHz. 

  Earphone socket. DIN socket for tape recorder.

• Net weight (2.2 lb = 1 kg)
• 1.8 kg / 3 lb 15.4 oz (3.965 lb)

• Mentioned in
• Trader Service Sheet 3315/ 1978

• Literature/Schematics (1)
• ERT Service Chart 2148

• Author
• Model page created by Howard Craven. See "Data change" for further contributors.

• Other Models

• Here you find 397 models, 331 with images and 238 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Bush Radio; London