• Country
• Australia

• Manufacturer / Brand
• Amalgamated Wireless (Australasia) Ltd. (AWA); Sydney

• Year
• 1963/1964

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 279184

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

• Number of Transistors
• 8

• Semiconductors
• 2N1637 2N1639 2N410 2N410 2N410 2N408 2N217S 2N217S 1N295 or. OA80 or. OA90

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz; 3 AF stage(s)

• Tuned circuits
• 8 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Batteries / addl. power jack / 1 × 9 / 9 Volt

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

• Power out
• 0.4 W (undistorted)

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

• from Radiomuseum.org
• Model: Radiola Transistor Eight B31 - Amalgamated Wireless

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

• Dimensions (WHD)
• 8 x 11 x 4.25 inch / 203 x 279 x 108 mm

• Notes

• Radiola Transistor Eight Model B31.

  Model B31 is an eight transistor, battery operated, superheterodyne portable receiver designed for the reception of the Medium Wave Band.

  It is similar to the 208-PY, but includes an external power supply socket, and uses a different leather case.

  Features of the design include:

  Ferrite rod aerial with provision for car aerial or external aerial and earth system; high gain I.F. transformer, Autodyne convertor, high sensitivity; centre-tapped 80 ohms impedance speaker (MSP 50043).

  • Battery Eveready Type 276P or equivalent.
  • Mains powered Battery Saver PS9 optional extra for £3/18/6.
  • With leather carrying case in Tan, Black, Green & Blue.
  • See also Electrice Model E830P & Westinghouse Model W830P

• Net weight (2.2 lb = 1 kg)
• 6 lb 3 oz (6.187 lb) / 2.809 kg

• Price in first year of sale
• 40.95 AUS £

• Literature/Schematics (1)
• - - Manufacturers Literature (AWA service data sheets for models 208PY & B31, March 1964.)

• Literature/Schematics (2)
• J.R. Publications Transistor Radio Service Handbook (Group C1, 1964, Page A27. (Also at KevinChant.com))

• Author
• Model page created by Jim Greig. See "Data change" for further contributors.

• Other Models

• Here you find 1421 models, 846 with images and 453 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Amalgamated Wireless (Australasia) Ltd. (AWA); Sydney