• Country
• Germany

• Manufacturer / Brand
• Radiofrequenz GmbH; Berlin-Friedenau (später Loewe)

• Year
• 1926/1927

• Category
• RF (Radio Frequency-) Amplifier

• Radiomuseum.org ID
• 16285

• • Brand: Ges. für Radiotelephonie mbH

• Number of Tubes
• 1

• Valves / Tubes

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• - For headphones or amp.

• from Radiomuseum.org
• Model: NVG - Radiofrequenz GmbH; Berlin-

• Notes
• Zweifachröhre

• External source of data
• E. Erb 3-907007-36-0

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Other Models

• Here you find 29 models, 19 with images and 5 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radiofrequenz GmbH; Berlin-Friedenau (später Loewe)