Youyi 友谊 711

Zhangjiakou No.2 张家口无线电二厂 Zhangjiakou No.2 Radio Factory; Zhangjiakou (Hebei, N)

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  • Year
  • 1972 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 181461

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 Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: Youyi 友谊 711 - Zhangjiakou No.2 张家口无线电...
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 200 x 100 x 45 mm / 7.9 x 3.9 x 1.8 inch
  • Notes
  • The radio model Youyi 友谊 711 (Friendship) receives broadcast 535 - 1605 kc. Sensitivity 灵敏度: 1 mV/m. Selectivity 选择性: 20 dB (S/N). Set audio output 额定功率: 100 mW (200 mW). Electric power consumption 电源消耗 at zero signal 零信号: 13 mA, at max. it is 120 mA. The IF frequency is most probably 465 kc. Loudspeaker 8 ohm. 4 diodes. Manual 03 shows Zhangjiakou No.1 Radio Factory on page 281 - but ZTL has told us it is No. 2.
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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