Hongdeng 红灯 753

Shanghai No.2 上海无线电二厂 Shanghai No.2 Radio Factory; Shanghai

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  • Year
  • 1972 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 181073

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 only (MW).
  • Power type and voltage
  • Dry Batteries / 3 Volt
  • Loudspeaker
  • Permanent or electro-dynamic (moving coil), system not known yet.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Hongdeng 红灯 753 - Shanghai No.2 上海无线电二厂
  • Shape
  • Tablemodel without push buttons, Mantel/Midget/Compact up to 14
  • Dimensions (WHD)
  • 228 x 100 x 70 mm / 9 x 3.9 x 2.8 inch
  • Notes
  • The radio model Hongdeng 红灯 753 (Red Lantern) has the following key features 主要性能: Frequency range 频率范围: broadcast band 535 - 1605 kc. Sensitivity 灵敏度: < 1 mV/m (1 mV/m). Selectivity 选择性: 14 dB (S/N). Electric power consumption 电源消耗 at zero signal 零信号: 20 mA, at max. it is 130 mA. The IF is most probably 465 kc. Set audio output 额定功率 : 100 mW. Loudspeaker 8 ohm. 3 diodes.
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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