• Country
• Hungary

• Manufacturer / Brand
• Telefongyar, Terta (TRT, Export = Orion); Budapest

• Year
• 1926 ?

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 141923

• • Brand: Terta, TRT

• Number of Tubes
• 2

• Valves / Tubes

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Biformer - Telefongyar, Terta TRT, Export

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

• Literature/Schematics (1)
• Magyar Wolframlámpagyár Kremenezky János Rt. Rádiókatalógus ~1926

• Author
• Model page created by Sándor Selyem-Tóth. See "Data change" for further contributors.

• Other Models

• Here you find 218 models, 203 with images and 55 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Telefongyar, Terta (TRT, Export = Orion); Budapest