• Country
• Great Britain (UK)

• Manufacturer / Brand
• Radiax, London

• Year
• 1923 ??

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

• Radiomuseum.org ID
• 77084

• Main principle
• Crystal or Solid State Detector

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

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Challenge Universal No. 41 - Radiax, London

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

• Dimensions (WHD)
• 10 x 7 x 8 inch / 254 x 178 x 203 mm

• Notes

• Manufactured by "Radiax".

  "Long" "short" wavelength switch.

• Mentioned in
• Tickling the Crystal; Sanders

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

• Other Models

• Here you find 11 models, 6 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radiax, London