• Year
  • 1960/1961
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 134984
    • 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.

 Technical Specifications

  • Number of Tubes
  • 7
  • Main principle
  • Superheterodyne (common); ZF/IF 460/10700 kHz
  • Tuned circuits
  • 6 AM circuit(s)     10 FM circuit(s)
  • Wave bands
  • Broadcast, Short Wave plus FM or UHF.
  • Power type and voltage
  • Alternating Current supply (AC) / 117 Volt
  • Loudspeaker
  • 5 Loudspeakers
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Boston 40253 [Export] - Blaupunkt Ideal, Berlin,
  • Shape
  • Tablemodel with Push Buttons.
  • Notes
  • Blaupunkt Germany made the following export models with the same chassis: Boston 40253, Florenz 20353 (table model), Florida 40203, Florida 40213 and Granada 10203. The chassis is 2 printed boards: main board and FM-RF-subchassis. The cabinets show the following white push buttons: Off, PU, TR, AM, SW, FM. The controls are: volume right channel, volume left channel, bass right channel, bass left channel, treble right channel and treble left channel. There are 5 speakers: 2 electrostatic, 2 5" x 7" diameter and one with 7" x 10" diameter. Some models have record player or changer, some have small changements in the schematics which is shown in the SAMS Photofact.
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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