• Country
• Great Britain (UK)

• Manufacturer / Brand
• Unknown - CUSTOM BUILT: GB

• Year
• 1923/1924 ?

• Category
• Detector-Radio (Crystal or diode, without tubes/transistors)

• Radiomuseum.org ID
• 245616

• Main principle
• Crystal or Solid State Detector

• Tuned circuits
• 1 AM circuit(s)

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: The 447 - Unknown - CUSTOM BUILT: GB

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Dimensions (WHD)
• 4.5 x 5.5 x 3.5 inch / 114 x 140 x 89 mm

• Notes

• Socket with shorting link for loading coil.

• Mentioned in
• Tickling the Crystal; Sanders (vol.1, p.207)

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

• Other Models

• Here you find 118 models, 108 with images and 10 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Unknown - CUSTOM BUILT: GB