NF-Telefonrundspruch 74

Biennophone; (Marke)

  • Year
  • 1937/1938
  • Category
  • Wired Receiver (AF only)
  • Radiomuseum.org ID
  • 11492
    • alternative name: Sport AG Biel || Velectra AG

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Wired Wireless Receiver(AF only)
  • Power type and voltage
  • Alternating Current supply (AC) / 110; 125; 150; 220; 250 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: NF-Telefonrundspruch 74 - Biennophone; Marke
  • Shape
  • Tablemodel, low profile (big size).
  • Notes
  • Zenith-Wähler;PP-Endstufe
  • Price in first year of sale
  • 250.00 SFr
  • External source of data
  • E. Erb 3-907007-36-0
  • Source of data
  • Radiokatalog Band 2, Ernst Erb
  • Circuit diagram reference
  • Thali-Schemasammlung und Tungsram-Röhrenbestückung.

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The model NF-Telefonrundspruch is part of the collections of the following members.

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