• Country
• Germany

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

• Year
• 1967

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 857

• • 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
• 9

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

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

• Tuned circuits
• 7 AM circuit(s)     11 FM circuit(s)

• Wave bands
• Broadcast, Long Wave and FM or UHF.

• Power type and voltage
• Dry Batteries / 6×1,5; 2×4,5; 9 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: Diva 7.657.400 - Blaupunkt Ideal, Berlin,

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

• Dimensions (WHD)
• 256 x 162 x 77 mm / 10.1 x 6.4 x 3 inch

• Notes

• Betrieb im Auto über Autohalterung HV560/570 aus 6-V- oder 12-V-Autobatterie, dann 2 W Ausgangsleistung; Netzbetrieb mit zusätzlichem Netzteil möglich.

• Net weight (2.2 lb = 1 kg)
• 2 kg / 4 lb 6.5 oz (4.405 lb)

• Source of data
• Handbuch VDRG 1967/1968 / Radiokatalog Band 1, Ernst Erb

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

• Other Models

• Here you find 3525 models, 3214 with images and 2320 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Blaupunkt (Ideal), Berlin, später Hildesheim