• Country
• Great Britain (UK)

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

• Year
• 1923 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 186682

• Number of Tubes
• 4

• Valves / Tubes

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

• Loudspeaker
• -Loudspeaker incorporated, but system not known.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Lyrian 104 - Radio Instruments Ltd. &

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

• Notes
• Lyrian 104 model with chassis type V.4.C., an Audion plus three tubes for audio amplification. Built-in horn-speaker.
  BBC registration number 0112.

• Mentioned in
• Nesper, Der Radio-Amateur "Braodcasting", 1924

• Author
• Model page created by Georg Richter. 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