Zuanshi 钻石 7T1

Guangdong No.1 广东省佛山市无线电一厂 Guangdongsheng No.1 Foshanshi Radio Factory: Foshan

Data
Forum
Pictures
Collections

  • Year
  • 1972 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 181232

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

 Technical Specifications

  • Number of Transistors
  • 11
  • Main principle
  • Superheterodyne (common); ZF/IF 465 kHz; 4 AF stage(s)
  • Tuned circuits
  • 4 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Dry Batteries / 1.5 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: Zuanshi 钻石 7T1 - Guangdong No.1 广东省佛山市无...
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Notes
  • The radio model Zuanshi 钻石 7T1 has the following key features 主要性能: Frequency range 频率范围: broadcast band 535 - 1605 kc. Sensitivity 灵敏度: < 2 mV/m. Selectivity 选择性: 14 dB N/S. Set audio output 额定功率: 250 mW. Electric power consumption 电源消耗 at zero signal 零信号: is 25 mA and at max. output 280 mA. The IF 中频频率 is 465 kc. Loudspeaker impedance is 8 ohm. Two transistors are used as diodes. The model does not use a diode at all.
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum