• Country
• Great Britain (UK)

• Manufacturer / Brand
• Sobell Ind., Slough

• Year
• 1960

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 102137

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

• Number of Transistors
• 7

• Semiconductors
• OC44 or. GET874 OC45 or. GET873 OC45 or. GET873 OC71 OC81 or. GET114 OC81 or. GET114 OC81 or. GET114

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

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

• Power type and voltage
• Dry Batteries / 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3 inch = 7.6 cm

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

• from Radiomuseum.org
• Model: S303BT - Sobell Ind., Slough

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 6.75 x 4 x 1.75 inch / 171 x 102 x 44 mm

• Notes
• Transistors: OC44, 2x OC45, OC71, OC81D, 2x OC81. Integral leather case and supplied with short and long leather straps. Sockets on back for external aerial and earphone. Released November 1960, price £10 6s 8d plus purchase tax. Identical to the McMichael model M103BT.

• Net weight (2.2 lb = 1 kg)
• 0.6 kg / 1 lb 5.1 oz (1.322 lb)

• Source of data
• - - Data from my own collection

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

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

• Other Models

• Here you find 114 models, 65 with images and 90 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sobell Ind., Slough