• 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
• 1934

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 105088

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

• Number of Tubes
• 4

• Valves / Tubes
• X21 VS24 HD21 QP21

• Main principle
• Superheterodyne (common); ZF/IF 456 kHz

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

• Power type and voltage
• Storage and/or dry batteries / 2 & 9 & 166 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 257 - Marconi Co. Marconiphone,

• Shape
• Tablemodel, high profile (upright - NOT Cathedral nor decorative).

• Notes
• The chassis is the same as that in the HMV 146 and similar to that in the later Marconiphone 234 model.

• Literature/Schematics (1)
• Trader Service Sheet (suppl. of Wireless & El. Trader, etc.) (143)

• Literature/Schematics (2)
• Trader Service Sheet (suppl. of Wireless & El. Trader, etc.) (650)

• Author
• Model page created by Peter Hoddow. See "Data change" for further contributors.

• Other Models

• Here you find 501 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)