• Country
• Great Britain (UK)

• Manufacturer / Brand
• Marconi Co. (Marconiphone, Marconi's Wireless Telegraph Co. Ltd.), GB (not tubes - see also HMV His Master's Voice)

• Year
• 1922

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

• Radiomuseum.org ID
• 76080

Click on the schematic thumbnail to request the schematic as a free document.

• Main principle
• Crystal or Solid State Detector

• Tuned circuits
• 2 AM circuit(s)

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

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Marconiphone Crystal A Type RB3 M2 - Marconi Co. Marconiphone,

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

• Dimensions (WHD)
• 11.5 x 5.25 x 6.25 inch / 292 x 133 x 159 mm

• Notes
• BBC/PMG stamp, GPO No.101; slot in range blocks for wave change; Earlier models delivered before NOV.15, 1922 are without BBC/PMG and GPO markings.
  The set uses 2 Detectors: a Carborundum/steel detector (polarised by a 1.5 V cell) and an open Catwhiskers/Galena detector. Spade tuning. Slot-in range blocks.

• Net weight (2.2 lb = 1 kg)
• 2 kg / 4 lb 6.5 oz (4.405 lb)

• Mentioned in
• Radio! Radio! (fig.64)

• Literature/Schematics (1)
• Tickling the Crystal; Sanders (Vol.3; p.51)

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

• Other Models

• Here you find 502 models, 335 with images and 317 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Marconi Co. (Marconiphone, Marconi's Wireless Telegraph Co. Ltd.), GB (not tubes - see also HMV His Master's Voice)