• Country
• Great Britain (UK)

• Manufacturer / Brand
• McMichael Radio Ltd.; Slough

• Year
• 1947

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 104449

• • alternative name: McMichael, Leslie

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

• Number of Tubes
• 6

• Valves / Tubes
• ECH35 EF39 EBC33 EL33 EM34 5Z4G

• Main principle
• Superheterodyne (common); ZF/IF 465 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and 2 x Short Wave.

• Power type and voltage
• Alternating Current supply (AC) / 200-250 Volt

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

• from Radiomuseum.org
• Model: 481 [AC] - McMichael Radio Ltd.; Slough

• Notes

• There is also the 481U an AC/DC version, it's a similar chassis with 200mA series valves/tubes but might not be the same cabinet.

  The  471, 472, 475, 481, 482, 485 and 495 AC only versions all share this chassis. The 475, 485 and 495 are the gramophone versions all with Garrard Automatic Changers.

  A 6.3V 300mA bulb/lamp is a "fuse" in HT negative lead. Two spare lamps are fitted on the chassis.

  Wavebands

  • LW: 2000 ... 750 m
  • MW: 550 ... 170 m
  • SW1: 170 ... 50 m
  • SW2: 50 ... 13.5 m

• Mentioned in
• -- Original-techn. papers.

• Literature/Schematics (1)
• Radio And Television Servicing books (R&TVS) (1951 Ed. Vol1 Page 236)

• Author
• Model page created by Peter Hoddow. See "Data change" for further contributors.

• Other Models

• Here you find 183 models, 123 with images and 120 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from McMichael Radio Ltd.; Slough