• Country
• Germany

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

• Year
• 1987 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 234333

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

• Number of Transistors
• 4

• Semiconductors
• SF235 SF235 SF225 SC239 A281 A205K

• Main principle
• Superheterodyne (common); ZF/IF 455/10700 kHz

• Tuned circuits
• 4 AM circuit(s)     7 FM circuit(s)

• Wave bands
• Broadcast, Long Wave, Short Wave plus FM or UHF.

• Power type and voltage
• Alternating Current supply (AC) / 230 Volt

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

• Power out
• 3 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Saturn MR 423 - Stern-Radio Sonneberg, VEB,

• Shape
• Tablemodel with Push Buttons.

• Dimensions (WHD)
• 530 x 122 x 155 mm / 20.9 x 4.8 x 6.1 inch

• Notes

• Exportversion für CSSR. FM: OIRT 66-73 MHz.

• Net weight (2.2 lb = 1 kg)
• 3.5 kg / 7 lb 11.3 oz (7.709 lb)

• Mentioned in
• -- Original-techn. papers.

• Author
• Model page created by Jozef Kuklis. See "Data change" for further contributors.

• Other Models

• Here you find 385 models, 311 with images and 285 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