• Country
• Germany

• Manufacturer / Brand
• Graetz, Altena (Westfalen)

• Year
• 1966/1967

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 27138

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

• Number of Tubes
• 8

• Valves / Tubes
• ECH81 EF89 EF89 ECC808 EM87 ECC808 ECLL800 ECLL800

• Number of Transistors
• 8

• Semiconductors
• BF138 BF134 BF134 BF131 BF131 BF131 BF131 AC125 BA124 AA112 BA121 AA113 AA132 ZF12 ZF18 1N60 B250C185 B30C100

• Main principle
• Superheterodyne (common); ZF/IF 460 kHz

• Tuned circuits
• 8 AM circuit(s)     12 FM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 110; 127; 150; 220; 240 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 16 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Stereo Unit 250 25F - Graetz, Altena Westfalen

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 450 x 203 x 205 mm / 17.7 x 8 x 8.1 inch

• Notes

• Halbleiter-Dioden nur teilweise vorhanden

  Stereo-Steuergerät für Heimstudiotechnik; 2 separate Stereo-Lautsprecherboxen Typ 251F serienmäßig.
  Vorgesehen für den Einsatz eines Stereodecoders (steckbar) vom Typ 790903.

• Net weight (2.2 lb = 1 kg)
• 9.2 kg / 20 lb 4.2 oz (20.264 lb)

• External source of data
• erb

• Source of data
• Handbuch VDRG 1967/1968

• Literature/Schematics (1)
• -- Original-techn. papers. (Service-Manual von 6.66)

• Other Models

• Here you find 777 models, 697 with images and 596 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Graetz, Altena (Westfalen)