• Country
• Germany

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

• Year
• 1966/1967

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 853

• • 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
• 11

• Semiconductors
• AF106 AF135 AF136 AF138 AF137 OC45 AC122 AC122 AC122 AC117 AC117

• Main principle
• Superheterodyne (common); ZF/IF 460/10700 kHz

• Tuned circuits
• 8 AM circuit(s)     10 FM circuit(s)

• Wave bands
• Broadcast, 2 Short Wave plus FM or UHF.

• Power type and voltage
• Storage and/or dry batteries / 6 × 1,5 Volt

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

• Power out
• 2 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Derby 660 Automatic US 7.656.704 - Blaupunkt Ideal, Berlin,

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

• Dimensions (WHD)
• 270 x 195 x 82 mm / 10.6 x 7.7 x 3.2 inch

• Notes

• Technische Daten wie Derby 660 Automatic 7.656.700, jedoch MKU + Tropenband.
  FM-UKW 88...108 MHz.

  Betrieb auch über Autohalterung HV560/570.

• Net weight (2.2 lb = 1 kg)
• 3.2 kg / 7 lb 0.8 oz (7.048 lb)

• Source of data
• Handbuch VDRG 1966/1967 / Radiokatalog Band 1, Ernst Erb

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

• Other Models

• Here you find 3569 models, 3255 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