Changjiang 长江 7B2

Wuhan 武汉无线电厂 Wuhan Radio Factory; Wuhan City (Hubei, SC)

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  • Year
  • 1972 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 181469

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

 Technical Specifications

  • Number of Transistors
  • 7
  • Semiconductors
  • Main principle
  • Superheterodyne (common); ZF/IF 465 kHz; 3 AF stage(s)
  • Tuned circuits
  • 5 AM circuit(s)
  • Wave bands
  • Broadcast and Short Wave (SW).
  • Power type and voltage
  • Dry Batteries / 3 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: Changjiang 长江 7B2 - Wuhan 武汉无线电厂 Wuhan Radio
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 218 x 118 x 53 mm / 8.6 x 4.6 x 2.1 inch
  • Notes
  • The radio model Changjiang 长江 7B2 (Yangtze River) receives broadcast 535 - 1605 kc and SW 6 - 18 mc. Sensitivity 灵敏度: 2 mV/m. Selectivity 选择性: not given. Set audio output 额定功率: 150 mW (300 mW). Electric power consumption 电源消耗 at zero signal 零信号: 20 mA, at max. it is 150 mA. The IF frequency is most probably 465 kc. Loudspeaker is 8 ohm. 4 diodes.
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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