• Country
• Germany

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

• Year
• 1929–1931

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 471

• • 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
• REN1104 or REN804 RENS1204 RE604 RGN2004

• Main principle
• TRF with regeneration; 2 AF stage(s)

• Tuned circuits
• 1 AM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 110-135; 220-240 Volt

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

• Power out
• 1.5 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: NKW1,5R - Blaupunkt Ideal, Berlin,

• Dimensions (WHD)
• 330 x 270 x 215 mm / 13 x 10.6 x 8.5 inch

• Notes
• NKW1,5 nötig!;2 Tr.Skalen [569]

• Price in first year of sale
• 338.00 RM !

• Source of data
• Arlt's grosser Radiokatalog 1930 / Radiokatalog Band 1, Ernst Erb

• Circuit diagram reference
• Lange + FS-Bestückungstabellen

• Mentioned in
• Katalog Radio-Zentrale Prohaska 1930/31 (dick)

• Literature/Schematics (1)
• Arlt's grosser Radiokatalog 1930 (Illustrierter Radio Katalog 1929/30)

• Other Models

• Here you find 3591 models, 3279 with images and 2331 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Blaupunkt (Ideal), Berlin, später Hildesheim