Hongbo 红波 BS-501

Tianjin 天津渤海无线电厂 Tianjin Bohai Radio Factory; Tianjin (N)

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  • Year
  • 1968 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 178026

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

 Technical Specifications

  • Number of Transistors
  • 5
  • Main principle
  • Superheterodyne (common); ZF/IF 465 kHz; 2 AF stage(s)
  • Tuned circuits
  • 4 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • 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: Hongbo 红波 BS-501 - Tianjin 天津渤海无线电厂
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 240 x 150 x 65 mm / 9.4 x 5.9 x 2.6 inch
  • Notes
  • According to TRM 01, the model BS-501 was made for the brand Hongbo 红波 (red wave) and Hai He 海河 (Haihe River). BS-501 was made by 3 different manufacturers - with the same model number BS-501 and the same schematic / case.

    According to RM 02, the model BS-501 has the following key features 主要性能: Frequency range 频率范围: 535 ~ 1605 kc. Sensitivity 灵敏度: < 2 mV / m. Selectivity 选择性: > 14 dB. Set audio output 额定功率: 50 mW. Electrical power consumption 电源消耗: If no signal present 无讯号时: < 12 mA. At max. AF output 额定输出时: < 120 mA. The IF frequency is most probably 465 kc. Loudspeaker is 8 ohm.
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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