• Year
  • 1952/1953
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 19184
    • 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.

 Technical Specifications

  • Number of Tubes
  • 4
  • Number of Transistors
  • Main principle
  • Superheterodyne (common); ZF/IF 450 or 473/10700 kHz; Reflex
  • Tuned circuits
  • 6 AM circuit(s)     9 FM circuit(s)
  • Wave bands
  • Broadcast, Short Wave plus FM or UHF.
  • Power type and voltage
  • AC/DC-set / 110; 125; 220-240 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical
  • Power out
  • 4 W (unknown quality)
  • Material
  • Bakelite case
  • from Radiomuseum.org
  • Model: Romanze B521UP - Blaupunkt Ideal, Berlin,
  • Shape
  • Tablemodel without push buttons, Mantel/Midget/Compact up to 14
  • Dimensions (WHD)
  • 340 x 222 x 168 mm / 13.4 x 8.7 x 6.6 inch
  • Notes
  • Blaupunkt Romanze B521UP nutzt die UF41 bei UKW als HF-Vorstufe und NF-Vorstufe (Reflexschaltung).

    UKW-Demodulator: Diskriminator mit einer Germanium-Diode RL105 und einer Röhren-Diode der UBF80.

  • Net weight (2.2 lb = 1 kg)
  • 4.5 kg / 9 lb 14.6 oz (9.912 lb)
  • Price in first year of sale
  • 192.00 DM
  • External source of data
  • Erb
  • Literature/Schematics (1)
  • -- Original-techn. papers.

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