• Country
• Hungary

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

• Year
• 1926 ?

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 141920

• • Brand: Terta, TRT

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - Is a Headphone or Earphone

• Material
• Various materials

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

• Notes
• 4000 Ohm.

• 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