• Country
• Germany

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

• Year
• 1941 ?

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

• Radiomuseum.org ID
• 645

• • 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
• 7

• Valves / Tubes
• EF11 ECH11 EF11 EBC11 EBC11 EDD11 EZ11

• Main principle
• Superhet with RF-stage

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast (MW) and Long Wave.

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

• Loudspeaker
• Presumably Dynamic Loudspeaker (moving coil)

• Material
• Metal case

• from Radiomuseum.org
• Model: 7A741H - Blaupunkt Ideal, Berlin,

• Shape
• Chassis only or for «building in»

• Source of data
• Radiokatalog Band 1, Ernst Erb

• Circuit diagram reference
• Lange + Schenk

• Other Models

• Here you find 3591 models, 3279 with images and 2330 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Blaupunkt (Ideal), Berlin, später Hildesheim