• Country
• Switzerland

• Manufacturer / Brand
• Niesen, Constructions électriques et mécaniques (CEM); Neuchâtel

• Year
• 1937/1938

• Category
• Wired Receiver (AF only)

• Radiomuseum.org ID
• 12596

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

• Number of Tubes
• 2

• Valves / Tubes
• 42 or 6V6G 80 or 5Y3G

• Main principle
• Audio-Amplification; 1 AF stage(s)

• Wave bands
• - without

• Details
• Wired Wireless Receiver(AF only)

• Power type and voltage
• Alternating Current supply (AC) / 125; 150; 220; 230 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: NF-Telefonrundspruch 7D - Niesen, Constructions

• Shape
• Tablemodel, with any shape - general.

• Notes
• Niesen 7D;

• 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.

• Other Models

• Here you find 81 models, 51 with images and 56 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Niesen, Constructions électriques et mécaniques (CEM); Neuchâtel