• Country
• Germany

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

• Year
• 1977/1978

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 112568

• • 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
• Superheterodyne (common); ZF/IF 455/10700 kHz

• Tuned circuits
• 5 AM circuit(s)     7 FM circuit(s)

• Wave bands
• Broadcast, Short Wave plus FM or UHF.

• Details
• Cassette-Recorder or -Player

• Power type and voltage
• Line / Batteries (any type) / 220 / 6 × 1,5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 10 cm = 3.9 inch

• Power out
• 1 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Derby Holiday 7.657.030 - Blaupunkt Ideal, Berlin,

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

• Dimensions (WHD)
• 310 x 220 x 90 mm / 12.2 x 8.7 x 3.5 inch

• Notes
• ICs: 2.
  Anschlüsse: Mikrofon mit Fernbedienung, Ohrhörer, Plattenspieler/Tonbandgerät.
  Im VDRG-Handbuch 1977/78 als 7.757.300 mit identischen Daten bezeichnet.

• Net weight (2.2 lb = 1 kg)
• 3 kg / 6 lb 9.7 oz (6.608 lb)

• Source of data
• Handbuch VDRG 1977/1978

• Literature/Schematics (1)
• -- Original-techn. papers.

• Author
• Model page created by Josef Pilz. See "Data change" for further contributors.

• Other Models

• Here you find 3586 models, 3273 with images and 2328 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Blaupunkt (Ideal), Berlin, später Hildesheim