Frankfurt Stereo 7.631.642 ab 2800001

• Country
• Germany

• Manufacturer / Brand
• Blaupunkt (Ideal), Berlin, später Hildesheim

• Year
• 1971–1973

• Category
• Car Radio, perhaps also + sound player/recorder

• Radiomuseum.org ID
• 28287

• • alternative name: Ideal-Radiotelephon- und App-fabr. || Ideal-Werke AG; Berlin (ab 1934)
  • Brand: Rotstern

• Picture
• Schematics

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• Number of Transistors
• 24

• Semiconductors
• SB100 BF340 BF243 BF243 BF243 BF243 BF243 BC183 BC148 BC148 BC148 BC148 BC258 BC183 BC172 BC172 S2066 AD161 AD162 BC172 BC172 S2066 AD161 AD162 AA112 AA119 ZF9,1 BA111 1N4148 ZG1

• Main principle
• Superhet with RF-stage; ZF/IF 460 or 452/10700 kHz

• Tuned circuits
• 8 AM circuit(s)     13 FM circuit(s)

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

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 12 Volt

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

• Power out
• 10 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Frankfurt Stereo 7.631.642 ab 2800001 - Blaupunkt Ideal, Berlin,

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 160 x 50 x 180 mm / 6.3 x 2 x 7.1 inch

• Notes

• NF-Verstärker mit zwei Endstufen je 4 W.
  Polarität umlötbar Minus oder Plus an Masse.
  Stereo-Decoder eingebaut, Mono-Stereo-Umschaltung automatisch und manuell.
  Anschlüsse für Stereo-TB und Automatikantenne.
  Im VDRG-Handbuch 1972/73 mit 25 Transistoren geführt.

  Dioden nur einmal je Typ gelistet

• Net weight (2.2 lb = 1 kg)
• 1.6 kg / 3 lb 8.4 oz (3.524 lb)

• External source of data
• Erb

• Source of data
• Handbuch VDRG 1971/1972

• Mentioned in
• Handbuch VDRG 1972/1973

• Literature/Schematics (1)
• -- Original-techn. papers. (KDB 371.04.016.20)

• Other Models

• Here you find 3587 models, 3274 with images and 2328 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Blaupunkt (Ideal), Berlin, später Hildesheim