Huanqiu 环球 719

Beijing No.1 北京市东风无线电一厂 Beijing Shi No.1 Dongfeng Radio Factory; Beijing

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  • Year
  • 1968 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 178290

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 / 4.5 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: Huanqiu 环球 719 - Beijing No.1 北京市东风无线电一厂
  • Shape
  • Tablemodel without push buttons, Mantel/Midget/Compact up to 14
  • Notes
  • The radio model Huanqiu 环球 719 ("Worldwide") has the following key features 主要性能: Frequency range 频率范围: broadcast band 525 - 1605 kc. Sensitivity 灵敏度: < 2 mV/m. Selectivity 选择性: > 14 dB (10 kc). Set audio output 额定功率: 100 mW. Electric power consumption 电源消耗 at zero signal 零信号: is 16 mA, at max. output it is 65 mA. The IF 中频频率 is 465 kc. Loudspeaker impedance is 8 ohm. 4 diodes - the schematic shows 2 x 3DG200 instead of two diode designations.
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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