• Country
• Germany

• Manufacturer / Brand
• Tefag; Telephon Aktiengesellschaft vorm. J. Berliner

• Year
• 1924/1925

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 4902

• • alternative name: Telephon-Fabrik, AG vorm. J. Berliner

• Number of Tubes
• 5

• Valves / Tubes

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown); 2 Special; 2 AF stage(s); Neutrodyne

• Tuned circuits
• 3 AM circuit(s)

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Neutrodyn - Tefag; Telephon

• Notes
• 2 Anzeige-Instr.

• Source of data
• Radiokatalog Band 1, Ernst Erb

• Circuit diagram reference
• Info Dr. H. Börner without schematic

• Picture reference
• Das Modell ist im «Radiokatalog» (Erb) abgebildet.

• Other Models

• Here you find 262 models, 180 with images and 108 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tefag; Telephon Aktiengesellschaft vorm. J. Berliner