• Country
• Great Britain (UK)

• Manufacturer / Brand
• Gambrell Bros.Ltd., London

• Year
• 1924 ?

• Category
• Radio module pre 1926 (not a part, not a key)

• Radiomuseum.org ID
• 133504

• Number of Tubes
• 2

• Valves / Tubes

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case, TUBES VISIBLE.

• from Radiomuseum.org
• Model: Unit No.4 Detektor and 1 L.F - Gambrell Bros.Ltd., London

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

• Notes
• Detector (valve) and single stage audio amplifier. Needs a tuner in front.

• Literature/Schematics (1)
• Modern Wireless,Dez. 1924

• Author
• Model page created by Rudolf Osterkamp. See "Data change" for further contributors.

• Other Models

• Here you find 42 models, 36 with images and 6 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Gambrell Bros.Ltd., London