• Country
• Great Britain (UK)

• Manufacturer / Brand
• Radio-Aid Ltd.; London

• Year
• 1943/1944 ?

• Category
• Medical Technology

• Radiomuseum.org ID
• 73141

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

• Number of Tubes
• 3

• Valves / Tubes
• DAS1 DA1 DA2

• Main principle
• Audio-Amplification; 3 AF stage(s)

• Wave bands
• - without

• Details
• Hearing aid

• Power type and voltage
• Storage and/or dry batteries / 2 V & 40 Volt

• Loudspeaker
• - only for Earphone!

• Material
• Various materials

• from Radiomuseum.org
• Model: Hearing aid - Radio-Aid Ltd.; London

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 119 x 158 x 94 mm / 4.7 x 6.2 x 3.7 inch

• Notes
• Case with crystal microfon, amplifier and phone-socket.

• Price in first year of sale
• 10.00 BP

• Author
• Model page created by Günther Stabe † 19.8.20. See "Data change" for further contributors.

• Other Models

• Here you find 1 models, 1 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio-Aid Ltd.; London