• Country
• Germany

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

• Year
• 1947/1948

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 693

• • 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
• 2

• Valves / Tubes
• UCL11 UY11 U2410

• Main principle
• Audio-Amplification

• Power type and voltage
• AC/DC-set / 220 Volt

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

• Material
• Metal case

• from Radiomuseum.org
• Model: RK427 - Blaupunkt Ideal, Berlin,

• Dimensions (WHD)
• 200 x 250 x 130 mm / 7.9 x 9.8 x 5.1 inch

• Notes

• Regelgerät zu Schulfunk Berlin 5GW647B, Teil der 'Schulfunk-Anlage Berlin'.
  Passende Lautsprecher L 1047 B [E-dyn.] bzw. L 1047 B [P-dyn.] oder L647B.

• Net weight (2.2 lb = 1 kg)
• 2.6 kg / 5 lb 11.6 oz (5.727 lb)

• Source of data
• Radiokatalog Band 1, Ernst Erb

• Circuit diagram reference
• Lange + Schenk Nr. 30 von 1948

• Mentioned in
• Die Radio-Reparatur (329)

• Literature/Schematics (1)
• Funk-Technik (FT)

• Other Models

• Here you find 3527 models, 3216 with images and 2321 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Blaupunkt (Ideal), Berlin, später Hildesheim