• Country
• Great Britain (UK)

• Manufacturer / Brand
• HMV (Brand), His Masters Voice, The Gramophone Company Ltd.; Middlesex

• Year
• 1931

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 194611

• Number of Tubes
• 5

• Valves / Tubes
• MS4 MS4 MHL4 PT625 U10

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown)

• Details
• Record Player (not changer)

• Power type and voltage
• Alternating Current supply (AC) / 100-250 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 521AC - HMV Brand, His Masters Voice,

• Shape
• Console, Lowboy (legs < 50 %).

• Dimensions (WHD)
• 625 x 930 x 430 mm / 24.6 x 36.6 x 16.9 inch

• Notes
• This set is in the VRT Omroepmuseum in Brussels

• Source of data
• - - Data from my own collection

• Literature/Schematics (1)
• Radio Marketing Service Engineer

• Author
• Model page created by Georges Van Campenhout † 28.4.22. See "Data change" for further contributors.

• Other Models

• Here you find 421 models, 330 with images and 242 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from HMV (Brand), His Masters Voice, The Gramophone Company Ltd.; Middlesex