• Country
• Germany

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

• Year
• 1952/1953

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 25100

• • 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
• EF41 ECH81 EBF80 EL41

• Main principle
• Superheterodyne (common); ZF/IF 473/10,7 kHz

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

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

• Power type and voltage
• Alternating Current supply (AC) / 110-240 Volt

• Loudspeaker
• -Loudspeaker incorporated, but system not known.

• from Radiomuseum.org
• Model: Romanze B521WH - Blaupunkt Ideal, Berlin,

• External source of data
• Wiesmüller

• Source of data
• Lange, Schaltungen der Funkindustrie

• 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