• Year
  • 1950/1951
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 775
    • 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
  • 9
  • Main principle
  • Superhet with RF-stage; ZF/IF 473/10700 kHz
  • Tuned circuits
  • 7 AM circuit(s)     8 FM circuit(s)
  • Wave bands
  • Broadcast, Long Wave, more than 2 x SW plus FM or UHF.
  • Power type and voltage
  • Alternating Current supply (AC) / 110; 125; 220-240 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 26 cm = 10.2 inch
  • Power out
  • 8 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: L498W - Blaupunkt Ideal, Berlin,
  • Shape
  • Tablemodel, low profile (big size).
  • Dimensions (WHD)
  • 540 x 400 x 290 mm / 21.3 x 15.7 x 11.4 inch
  • Notes
  • Siehe auch identisches Modell Blaupunkt LU780

    L-Abstimmung bei UKW, C-Abstimmung bei AM. 3× KW, variable Bandbreite.
    9-kHz-Sperre schaltbar, UKW Empfindlichkeit 100 µV, mit zusätzlicher Vorstufe EF15 50 µV, stetig regelbare Tonblende, KW von 13- 54,5m in drei Bereichen.

  • Net weight (2.2 lb = 1 kg)
  • 18.8 kg / 41 lb 6.6 oz (41.41 lb)
  • Price in first year of sale
  • 498.00 DM
  • Circuit diagram reference
  • Lange Schaltungen der Funkindustrie, Buch 2
  • Literature/Schematics (1)
  • -- Original-techn. papers.

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