• Country
• Germany

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

• Year
• 1951 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 25081

• • 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
• UCH11 UBF11 UCL11 UY11

• Main principle
• Superheterodyne (common); ZF/IF 473 kHz

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast and Short Wave (SW).

• Power type and voltage
• AC/DC-set / 110,220 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 15 cm = 5.9 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: F640U - Blaupunkt Ideal, Berlin,

• Dimensions (WHD)
• 455 x 270 x 175 mm / 17.9 x 10.6 x 6.9 inch

• Notes
• Ch=B174KU=B198KU=F630U=F640U

• External source of data
• Wiesmüller

• Source of data
• Lange, Schaltungen der Funkindustrie

• 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