• Country
• Germany

• Manufacturer / Brand
• Sennheiser Electronic (Labor W); Wennebostel

• Year
• 1980 ??

• Category
• Commercial Receiver (may include amateur bands)

• Radiomuseum.org ID
• 220681

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• Semiconductors present.

• Semiconductors
• J175 BC548 BC548 BC548 BC548 BC548 TCA965 TAA765 NE570 TCA3189 TDA1062 S042 LM317

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

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Line / Batteries (any type) / 110; 220 / 12 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Mikroport-Empfänger EM 1003 - Sennheiser Electronic Labor W;

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 120 x 55 x 170 mm / 4.7 x 2.2 x 6.7 inch

• Notes

• Der Mikroport-Empfänger "EM 1003" von Sennheiser ist ein 3-Kanal Empfänger für drahtlose Mikrofone.
  Channel (Frequenz):
  1 - 36,7 MHz
  2 - 37,1 MHz
  3 - 37,9 MHz

  Zur Verbesserung der Signalqualität wird das Kompandersystem HiDyn (high dynamic) verwendet.

   

• Net weight (2.2 lb = 1 kg)
• 1.1 kg / 2 lb 6.8 oz (2.423 lb)

• Author
• Model page created by Jürgen Küting. See "Data change" for further contributors.

• Other Models

• Here you find 296 models, 281 with images and 136 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sennheiser Electronic (Labor W); Wennebostel