• Country
• Germany

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

• Year
• 1927/1928

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 454

• • 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
• 3

• Valves / Tubes
• RE054 or RE064 RE054 RE154

• Main principle
• TRF with regeneration; 2 AF stage(s)

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• Storage and/or dry batteries / 4 & 3-9 & 50-60 & 120-150 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Wooden case

• from Radiomuseum.org
• Model: Multidyn-Lautsprechergerät MA 3 B - Blaupunkt Ideal, Berlin,

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Dimensions (WHD)
• 340 x 200 x 190 mm / 13.4 x 7.9 x 7.5 inch

• Notes
• 200-3500m [559, 560]; verwendet den «Multidyn-HF-Trafo»; Schaltbild (Lange-Nowisch) zeigt spätere Ersatzröhren (RE114).

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

• Price in first year of sale
• 138.00 RM !

• Source of data
• Katalog Radio-Zentrale Prohaska 1928 / Radiokatalog Band 1, Ernst Erb

• Circuit diagram reference
• Lange-Nowisch

• Mentioned in
• Kat. Radio-WEB 1928 (Empfängerschaltungen der Radio-Industrie B1, S324)

• Literature/Schematics (1)
• Kat.Prohaska 1928 (von 1927!), p.62.

• Other Models

• Here you find 3548 models, 3234 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