• Country
• Great Britain (UK)

• Manufacturer / Brand
• Columbia Graphophone Co.; London

• Year
• 1930

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 77573

• Number of Tubes
• 2

• Valves / Tubes

• Main principle
• TRF with regeneration

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• -Loudspeaker incorporated, but system not known.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Twin Station Receiver 309 0C - Columbia Graphophone Co.;

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 14 x 15 x 8 inch / 356 x 381 x 203 mm

• Notes
• Preset tuning to two frequencies.

• Source of data
• Radio! Radio!

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• Other Models

• Here you find 53 models, 30 with images and 23 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Columbia Graphophone Co.; London