• Country
• Germany

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

• Year
• 1951/1952

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

• Radiomuseum.org ID
• 811

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

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

• Number of Tubes
• 4

• Valves / Tubes
• ECH42 EAF42 EAF42 EL41

• Number of Transistors

• Semiconductors
• SM30/7z or. SM30/9z E250C60 E250C60

• Main principle
• Superheterodyne (common); ZF/IF 473 kHz

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 6; 12 Volt

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

• Material
• Metal case

• from Radiomuseum.org
• Model: A51-F/B - Blaupunkt Ideal, Berlin,

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 135 x 185 x 305 mm / 5.3 x 7.3 x 12 inch

• Notes
• Separater permanent-dynamischer Lautsprecher (Ø 13 cm) im Lieferumfang. Wechselrichter für 6 V: SM30/7z; für 12 V: SM30/9z.

• Net weight (2.2 lb = 1 kg)
• 6 kg / 13 lb 3.5 oz (13.216 lb)

• Price in first year of sale
• 294.00 DM

• Source of data
• Kat.d.Rundf.GrossH.1951/52 / Radiokatalog Band 1, Ernst Erb

• Circuit diagram reference
• Lange Schaltungen der Funkindustrie, Buch 2

• Mentioned in
• -- Schematic

• Other Models

• Here you find 3525 models, 3214 with images and 2320 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Blaupunkt (Ideal), Berlin, später Hildesheim