• Country
• Germany

• Manufacturer / Brand
• Funkstrahl-Ges. für Nachrichtentechnik mbH; Konstanz

• Year
• 1948 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 14653

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

• Number of Tubes
• 3

• Valves / Tubes
• CF7 CF7 CBL1

• Number of Transistors

• Semiconductors
• Tr.Gl.=Metal-rectif.

• Main principle
• TRF without regeneration; 1 Special; 1 AF stage(s)

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Broadcast and Short Wave (SW).

• Power type and voltage
• AC/DC-set / 110-220 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Nachtigall GWK47 [3 Röhren] - Funkstrahl-Ges. für

• Notes
• [RM4902-56]

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

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Circuit diagram reference
• Lange + Schenk Nr. 30 von 1948

• Other Models

• Here you find 6 models, 3 with images and 5 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Funkstrahl-Ges. für Nachrichtentechnik mbH; Konstanz