Songhuajiang 松花江 4791

Hangzhou No.4 杭州无线电四厂 Hangzhou No.4 Radio Factory; Hangzhou

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  • Year
  • 1972 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 181091

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
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast and Short Wave (SW).
  • Power type and voltage
  • Dry Batteries / 6 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Songhuajiang 松花江 4791 - Hangzhou No.4 杭州无线电四厂
  • Shape
  • Tablemodel, low profile (big size).
  • Dimensions (WHD)
  • 400 x 225 x 165 mm / 15.7 x 8.9 x 6.5 inch
  • Notes
  • The model Songhuajiang 松花江 4791 (Songhua River) has the following key features 主要性能: Frequency range 频率范围: broadcast band 525 - 1605 kc and SW 3.9 - 12 mc. Sensitivity 灵敏度: < 1 mV/m (0.1 mV/m). Selectivity 选择性: 26 dB N/S. Set audio output 额定功率: 300 mW. Electric power consumption 电源消耗 at zero signal 零信号: is not given. The IF 中频频率 is most probably 465 kc. Loudspeaker impedance is 8 ohm. 4 diodes.
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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