• Country
• Great Britain (UK)

• Manufacturer / Brand
• Mullard Wireless, London (see also Mullard Radio Valve)

• Year
• 1928

• Category
• Kit (Parts plus instruction) or building instructions only

• Radiomuseum.org ID
• 231360

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

• Number of Tubes
• 5

• Valves / Tubes
• PM2HL PM2HL PM2DX PM4DX PM6D

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

• Tuned circuits
• 1 AM circuit(s)

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

• Power type and voltage
• Storage and/or dry batteries / 120 & 2 Volt

• Loudspeaker
• Magnetic loudspeaker (reed) generic.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Master Five - Mullard Wireless, London see

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

• Notes

• (Note the Set uses all "PM" valves, but the types listed are mentioned in text not on schematic, contemporary examples would have been built with a range of similar 2V triodes as the parts sold separately)

  Kit with Cabinet option. Advertised Glasgow Herald Dec. 1928 as Blue print supplied with "Radio for the Million" Vol2 No.4 Sept. 1928

  In this period and "Radio for the Million" MW is referred to as "Short Waves" and SW as "Ultra Short Waves".

  This set uses a Frame Aerial with optional external Aerial and Earth.

  Speaker is a high impedance reed / moving iron paper cone type direct to final Anode and HT.

  A Tapped HT battery with GB or a separate GB is used with a 2V lead Acid cell for LT (about 500mA to 700mA depending on exact valves the kit builder purchases.)

  Two Mullard "Permacore" audio transformers used.

• Literature/Schematics (1)
• "Radio for the Million" Vol.2 No.4 Sept. 1928

• Author
• Model page created by Michael Watterson. See "Data change" for further contributors.

• Other Models

• Here you find 143 models, 117 with images and 59 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Mullard Wireless, London (see also Mullard Radio Valve)