• Country
• Germany

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

• Year
• 1960 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 231701

• Number of Tubes
• 6

• Valves / Tubes
• UCC85 UCH81 UBF89 UABC80 UM80 UL84

• 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
• AC/DC-set / 220 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Sonneberg Sekretär III R 697/87 GWU - Stern-Radio Sonneberg, VEB,

• Shape
• Tablemodel with Push Buttons.

• Dimensions (WHD)
• 545 x 335 x 195 mm / 21.5 x 13.2 x 7.7 inch

• Notes

• Chassis gleich Sekretär III, Gehäuse wie Nachfolgemodell Sekretär 4.

• Mentioned in
• Tabellenbuch DDR-Rundfunkgeräte; Funkverlag Hein

• Author
• Model page created by Wolfgang Eckardt. See "Data change" for further contributors.

• Other Models

• Here you find 385 models, 312 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