• Country
• Great Britain (UK)

• Manufacturer / Brand
• Radio Supply Co.; Birmingham

• Year
• 1927

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 204781

• Number of Tubes
• 3

• Valves / Tubes

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown)

• Tuned circuits
• 1 AM circuit(s)

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

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

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Wooden case

• from Radiomuseum.org
• Model: Superfone Maxum III [model 1] - Radio Supply Co.; Birmingham

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 11 x 11 x 6 inch / 279 x 279 x 152 mm

• Notes
• Grid-leak detector, transformer-coupled LF valve, resistance-capacity-coupled LF valve. Wave range 200-600 and 1000-2000 metres. Mahogany cabinet.

• Price in first year of sale
• 8.00 GBP

• Source of data
• Wireless World (The), London (WW, 79)

• Author
• Model page created by John Koster. See "Data change" for further contributors.

• Other Models

• Here you find 9 models, 1 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio Supply Co.; Birmingham