• Country
• Great Britain (UK)

• Manufacturer / Brand
• Collins & John Ltd., Birmingham (see also Collins W.H.)

• Year
• 1923

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

• Radiomuseum.org ID
• 76518

• Main principle
• Crystal or Solid State Detector

• Tuned circuits
• 1 AM circuit(s)

• 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: Amplex Model A - Collins & John Ltd.,

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

• Notes
• BBC/PMG stamp, GPO No.4545.

• Source of data
• 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 10 models, 3 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Collins & John Ltd., Birmingham (see also Collins W.H.)