• Country
• Germany

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

• Year
• 1927/1928

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 4870

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

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

• Number of Tubes
• 5

• Valves / Tubes
• RE064 RE064 RE064 RE154 RE154

• Main principle
• TRF with regeneration; 2 AF stage(s); Neutrodyne

• Tuned circuits
• 3 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and Short Wave.

• Power type and voltage
• Storage and/or dry batteries / 120 & 4 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Wooden case

• from Radiomuseum.org
• Model: Neutroflex 1245 - Tefag; Telephon

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Dimensions (WHD)
• 490 x 315 x 295 mm / 19.3 x 12.4 x 11.6 inch

• Notes

• 50-4000 m.

  Voltmeter;

• Net weight (2.2 lb = 1 kg)
• 15 kg / 33 lb 0.6 oz (33.04 lb)

• Price in first year of sale
• 390.00 RM

• Source of data
• Kat. Radio-WEB 1928 / Radiokatalog Band 1, Ernst Erb

• Mentioned in
• Radio-Quelle Leipzig. Großer Katalog 1927

• 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