• Country
• Germany

• Manufacturer / Brand
• Stern-Radio Berlin, VEB, RFT, (Kombinat); - vorm. Phonetika Radio (Ostd.) - vorm. Loewe Opta AG

• Year
• 1975–1980

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 77798

• • alternative name: Phonetika Radio Berlin, VEB; Berlin, (Ostd.)

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

• Number of Transistors
• 5

• Semiconductors
• SF235 SF235 SF225 SF225 SF225 A211D

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

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

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

• Power type and voltage
• Dry Batteries / 2 x 4,5 oder 6 x 1,5 Volt

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

• Power out
• 0.5 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Contura 2500 - Stern-Radio Berlin, VEB, RFT,

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 196 x 273 x 78 mm / 7.7 x 10.7 x 3.1 inch

• Notes
• 7 Dioden, 1 IC, Selengleichrichter
  Batterien 6 x 1,5 Volt oder 2 x 4,5 Volt. NF- Endstufe mit Schaltkreis A211D, UKW- Tuner mit 2x SF235, Mischstufe und ZF- Verstärker mit 3x SF225 bestückt. Lautsprecher LP553 mit 15 Ohm und 2 Watt. Die Impedanz darf nicht kleiner werden, Überlastung des Schaltkreises. Kurzwelle nur 49 m- Band.

• Net weight (2.2 lb = 1 kg)
• 1.7 kg / 3 lb 11.9 oz (3.744 lb)

• Price in first year of sale
• 400.00 DM

• Source of data
• -- Collector info (Sammler) / Radiokatalog Band 2, Ernst Erb

• Author
• Model page created by Dieter Erdmann. See "Data change" for further contributors.

• Other Models

• Here you find 233 models, 215 with images and 175 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Stern-Radio Berlin, VEB, RFT, (Kombinat); - vorm. Phonetika Radio (Ostd.) - vorm. Loewe Opta AG