• Country
• Germany

• Manufacturer / Brand
• Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München

• Year
• 1939 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 5335

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

• Number of Tubes
• 3

• Valves / Tubes
• EF12 EL11 AZ11

• Main principle
• TRF without regeneration

• Wave bands
• Long Wave and/or Very Low Frequency (VLF).

• Details
• Wired Wireless Receiver (RF!)

• Power type and voltage
• Alternating Current supply (AC) / 220 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• from Radiomuseum.org
• Model: Drahtfunk DF40 - Siemens & Halske, -Schuckert

• Source of data
• Radiokatalog Band 1, Ernst Erb

• Circuit diagram reference
• Lange+Schenk+FS-Röhrenbestückung

• Other Models

• Here you find 2511 models, 2108 with images and 1324 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München