• Country
• Great Britain (UK)

• Manufacturer / Brand
• McMichael Radio Ltd.; Slough

• Year
• 1947

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 104443

• • alternative name: McMichael, Leslie

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

• Number of Tubes
• 4

• Valves / Tubes
• DK91 DF91 DAF91 DL92

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

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• Dry Batteries / 1.5 & 90 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 15 cm = 5.9 inch

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: All Dry Portable 483 - McMichael Radio Ltd.; Slough

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

• Dimensions (WHD)
• 300 x 305 x 150 mm / 11.8 x 12 x 5.9 inch

• Notes

• Appears to be Minature tube (B7G valve) version of 463 (octal bases), identical batteries, tuning mechanism, almost identical chassis layout and circuit (V3 Pentode + diode rather than triode + diode), a similar case but differenc speaker grill and finish (same chassis removal instructions and appearance).

  Batteries: Batrymax B117 90V HT and All-Dry 32 1.5V LT, about 150 hours.

  Dual loop/frame aerials with adjustable loading coils to tune LF end of band.

  Early production may have RCA/Sylvania/Brimar designation equivalent tubes. 

  Price excluded Purchase tax but included batteries.

• Price in first year of sale
• 15.75 GBP

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

• Literature/Schematics (1)
• Trader Service Sheet 860

• 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