• Country
• Germany

• Manufacturer / Brand
• Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH

• Year
• 1933–1937

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 4318

• Number of Tubes
• 1

• Valves / Tubes
• REN904

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

• Wave bands
• - without

• Power type and voltage
• Powered by external power supply or a main unit.

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case, TUBES VISIBLE

• from Radiomuseum.org
• Model: Ela V 23 - Telefunken Deutschland TFK,

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 175 x 110 x 145 mm / 6.9 x 4.3 x 5.7 inch

• Notes
• Mikrophon-Vorverstärker.

• Net weight (2.2 lb = 1 kg)
• 2.4 kg / 5 lb 4.6 oz (5.286 lb)

• Price in first year of sale
• 117.00 RM

• Source of data
• HandB.d.d.Rundfunk-Handels 1936/37 / Radiokatalog Band 1, Ernst Erb

• Circuit diagram reference
• Röhren in FS-Bestückungstabellen

• Mentioned in
• Radio-Katalog, Mix & Genest Hansawerke, 1935

• Literature/Schematics (1)
• Katalog Radio-Schnorr Nr.54, 1934 (1933/34 S.144)

• Other Models

• Here you find 3558 models, 3143 with images and 2111 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH