• Country
• Great Britain (UK)

• Manufacturer / Brand
• Radio Instruments Ltd. & Aeronautical & General Instruments, Ltd.; London

• Year
• 1928

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 134787

• Number of Tubes
• 3

• Valves / Tubes
• AC/S AC/R SP41U

• Main principle
• TRF with regeneration; Screengrid 1926-1935

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

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: All-Electric S.G. Three - Radio Instruments Ltd. &

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

• Dimensions (WHD)
• 12.8 x 16.8 x 15 inch / 325 x 427 x 381 mm

• Notes
• Uses external speaker leads as aerial. Reaction control.

• Price in first year of sale
• 30.00 GBP

• Literature/Schematics (1)
• Wireless World (The), London (WW, 79) (WW article August 21 1929 p183)

• Author
• Model page created by Roy Johnson. See "Data change" for further contributors.

• Other Models

• Here you find 49 models, 43 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio Instruments Ltd. & Aeronautical & General Instruments, Ltd.; London