• Country
• Germany

• Manufacturer / Brand
• Apparatebau Backnang GmbH, Star-Radio, Backnang-Neuschöntal (Württ.)

• Year
• 1950/1951

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 13943

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

• Number of Tubes
• 6

• Valves / Tubes
• ECH43 EF41 EBC41 EL11 EM4 AZ1

• Main principle
• Superheterodyne (common); ZF/IF 472 kHz

• Tuned circuits
• 7 AM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 110; 127; 220; 240 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 21 cm = 8.3 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: Star-Neptun 51 Ultra - Apparatebau Backnang GmbH,

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 515 x 310 x 230 mm / 20.3 x 12.2 x 9.1 inch

• Notes
• UKW = Superregenerativ; L-Abstimmung; KW-Lupe.

• Net weight (2.2 lb = 1 kg)
• 6.2 kg / 13 lb 10.5 oz (13.656 lb)

• Price in first year of sale
• 295.00 DM

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

• Source of data
• Kat.d. Rundf.Gr.Handel 1950/51 / Radiokatalog Band 2, Ernst Erb

• Circuit diagram reference
• Lange-Nowisch (??)

• Mentioned in
• Funkschau (5015)

• Other Models

• Here you find 32 models, 24 with images and 14 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Apparatebau Backnang GmbH, Star-Radio, Backnang-Neuschöntal (Württ.)