• Country
• Australia

• Manufacturer / Brand
• Ferris Bros. Pty Ltd.; Sydney

• Year
• 1967

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 189973

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

• Number of Transistors
• 9

• Semiconductors
• 2N1637 2N1639 2N1638 2N1638 2N649 2N408 AC187 AC188 AC187 OA90 OA91

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

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries / 12 Volt

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

• Material
• Metal case

• from Radiomuseum.org
• Model: Super Nine Portable Caradio M274 [12 volt] - Ferris Bros. Pty Ltd.; Sydney

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

• Dimensions (WHD)
• 228 x 175 x 68 mm / 9 x 6.9 x 2.7 inch

• Notes

• This model, like many Ferris models, could be used as a portable or, when slid into a special under-dash cradle, a car radio. When used as a car radio, it is automatically connected to the car's power supply, speaker, and aerial. The cradle contains a further stage of audio amplification.  This transistor type is not stated on the circuit, or listed in the cradle parts list, but is likely a 2N301 or similar.  Alternatives to the transistors listed could also be used. The case is of thick cast metal and is very heavy.  There is also a 6-volt variant.

  The cradle alone weighs 1.8 kilograms.

  The design voltage is shown on the fascia, just to the left of the tuning scale. 

  The elliptical speaker measures 135mm by 95mm.

  The small box at the rear of the cradle holds the components for the audio amplifier and serious filter components.

   

   

• Net weight (2.2 lb = 1 kg)
• 2.4 kg / 5 lb 4.6 oz (5.286 lb)

• Price in first year of sale
• 84.90 AUS $

• Source of data
• -- Collector info (Sammler)

• Literature/Schematics (1)
• J.R. Publications Car Radio Service Handbook (Group G5, February 1968, Page F8.)

• Literature/Schematics (2)
• J.R. Publications Transistor Radio Service Handbook (Group C5, 1968, Page F19.)

• Author
• Model page created by Stuart Irwin. See "Data change" for further contributors.

• Other Models

• Here you find 143 models, 86 with images and 49 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ferris Bros. Pty Ltd.; Sydney