• Country
• Germany

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

• Year
• 1971–1973

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 28479

• • 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 Transistors
• 7

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Tape Recorder

• Power type and voltage
• Line / Batteries (any type) / 220 / 4 × 1,5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8 cm = 3.1 inch

• Power out
• 0.6 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Twen NT 7.614.090 - Blaupunkt Ideal, Berlin,

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 165 x 66 x 203 mm / 6.5 x 2.6 x 8 inch

• Notes
• Übertragungsbereich: 100···8000 Hz.

• Net weight (2.2 lb = 1 kg)
• 1.8 kg / 3 lb 15.4 oz (3.965 lb)

• External source of data
• Erb

• Source of data
• Handbuch VDRG 1971/1972

• 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