• Country
• Germany

• Manufacturer / Brand
• Stern-Radio Sonneberg, VEB, RFT; SONRA; -vorm.: EAK (Ostd.) - ex. AEG

• Year
• 1957/1958

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 16762

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

• Number of Tubes
• 5

• Valves / Tubes
• ECC85 ECH81 EBF80 EAA91 ECL81

• Number of Transistors

• Semiconductors
• Selengleichrichter

• Main principle
• Superheterodyne (common); ZF/IF 473/10700 kHz

• Tuned circuits
• 6 AM circuit(s)     9 FM circuit(s)

• Wave bands
• Broadcast, Long Wave and FM or UHF.

• Power type and voltage
• Alternating Current supply (AC) / 110; 220 Volt

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

• Power out
• 1.5 W (unknown quality)

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Sonneberg Sekretär 696/57WU [Bakelitgehäuse] - Stern-Radio Sonneberg, VEB,

• Shape
• Tablemodel with Push Buttons.

• Dimensions (WHD)
• 400 x 280 x 145 mm / 15.7 x 11 x 5.7 inch

• Notes
• Parallelgerät zum 696/57WU mit Holzgehäuse
  

  Netztrafo nur für Röhrenheizung, keine Netztrennung !!!

• Net weight (2.2 lb = 1 kg)
• 6.6 kg / 14 lb 8.6 oz (14.537 lb)

• Price in first year of sale
• 300.00 Mark

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

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Literature/Schematics (1)
• -- Schematic (Service-DVD Funkverlag Hein)

• Other Models

• Here you find 386 models, 313 with images and 288 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Stern-Radio Sonneberg, VEB, RFT; SONRA; -vorm.: EAK (Ostd.) - ex. AEG