Haiou 海鸥 7C2

Shanghai 上海长空无线电厂 Shanghai Changkong Radio Factory; Shanghai

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  • Year
  • 1972 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 180981

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

 Technical Specifications

  • Number of Transistors
  • 7
  • 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 / 6 Volt
  • Loudspeaker
  • Permanent or electro-dynamic (moving coil), system not known yet.
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: Haiou 海鸥 7C2 - Shanghai 上海长空无线电厂
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 170 x 100 x 44 mm / 6.7 x 3.9 x 1.7 inch
  • Notes
  • The radio model Haiou 海鸥 7C2 (Seagull) has the following key features 主要性能: Frequency range 频率范围: broadcast band 535 - 1605 kc and SW 3.9 - 12 mc. Sensitivity 灵敏度: < 1.5 mV/m. Selectivity 选择性: > 20 dB S/N. Set audio output 额定功率: 80 mW (150 mW). Electric power consumption 电源消耗 at zero signal 零信号: 10 mA, at max. 60 mA. The IF frequency is most probably 465 kc. Loudspeaker impedance is 8 ohm. 2 diodes.
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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