• Country
• Austria

• Manufacturer / Brand
• Vienna - Radio Urania, Ing. May & Köhler; Wien

• Year
• 1958 ??

• Category
• Medical Technology

• Radiomuseum.org ID
• 269198

• Number of Transistors
• 4

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Hearing aid

• Power type and voltage
• Dry Batteries

• Loudspeaker
• - only for Earphone!

• Material
• Metal case

• from Radiomuseum.org
• Model: 4 Transistor - Hörgerät T4NT - Vienna - Radio Urania, Ing.

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 7 models, 5 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Vienna - Radio Urania, Ing. May & Köhler; Wien