Frankfurt SM 21 7.631.750

• Country
• Germany

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

• Year
• 1981–1985

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

• Radiomuseum.org ID
• 147377

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

• Picture
• Schematics

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

• Number of Transistors
• 24

• Semiconductors

• Main principle
• Superheterodyne (common); ZF/IF 465/10700 kHz

• 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).

• Material
• Metal case

• from Radiomuseum.org
• Model: Frankfurt SM 21 7.631.750 - Blaupunkt Ideal, Berlin,

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 179 x 50 x 160 mm / 7 x 2 x 6.3 inch

• Notes
• ICs: 11
  Ausgangsleistung: 2× 10 W (Musik) an 2 Ohm.

• Mentioned in
• Original Blaupunkt Service Unterlagen

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

• Author
• Model page created by Josef Pilz. See "Data change" for further contributors.

• Other Models

• Here you find 3587 models, 3275 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