Marconiphone Type 31

• 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
• 1925

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 77255

• Picture
• Schematics

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

• Number of Tubes
• 3

• Valves / Tubes
• DER DER DE6

• Main principle
• TRF with regeneration; 2 AF stage(s)

• Tuned circuits
• 1 AM circuit(s)

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

• Power type and voltage
• Storage and/or dry batteries / 2 x 60 & 2 & 9 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Marconiphone Type 31 - Marconi Co. Marconiphone,

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

• Dimensions (WHD)
• 14.5 x 9.5 x 10 inch / 368 x 241 x 254 mm

• Notes

• plug-in coils

  The grid leak resistor shown as 1 ohm on the circuit diagram should read 1M ohm.

• Source of data
• -- Original prospect or advert

• Mentioned in
• Radio! Radio!

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

• Other Models

• Here you find 502 models, 334 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)