Jiayin 佳音 7J1-A

Tianjin No.3 天津市无线电三厂 Tianjin City No.3 Radio Factory; Tianjin

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  • Year
  • 1968 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 178332

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

 Technical Specifications

  • Number of Transistors
  • 7
  • Semiconductors
  • 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: Jiayin 佳音 7J1-A - Tianjin No.3 天津市无线电三厂
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 198 x 110 x 45 mm / 7.8 x 4.3 x 1.8 inch
  • Notes
  • The radio model Jiayin 佳音 7J1-A ("excellent sound") offers the following key features 主要性能: Frequency range 频率范围: broadcast 535 - 1605 kc. The IF 中频频率 is most probably 465 kc. Sensitivity 灵敏度: 2 mV/m, selectivity 选择性: 14 dB. Set audio output 额定功率: 100 mW (250 mW). Electric power consumption 电源消耗 at zero signal 零信号: is not mentioned. Loudspeaker impedance is probably 8 ohm. 3 diodes. The manual 03 shows on page 188/189 the same documentation for models Jiayin 佳音 7J1 and Jiayin 佳音 7J1-A - including schematic.
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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