Tiantan 天坛 714 (714A)

Beijing 北京崇文广播器材厂 Beijing Chong Wen Broadcast Equipment Factory; Beijing

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  • Year
  • 1968 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 178729

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 / 6 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: Tiantan 天坛 714 - Beijing 北京崇文广播器材厂 Beijing
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 154 x 92 x 49 mm / 6.1 x 3.6 x 1.9 inch
  • Notes
  • The model Tiantan 天坛 714 or 714A (Temple of heaven) 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: 12 dB N/S. Set audio output 额定功率: 50 mW (150 mW). Electric power consumption 电源消耗 at zero signal 零信号: is10 mA, at max. output 50 mA. The IF 中频频率 is 465 kc. Loudspeaker impedance is 8 ohm. 1 diode.

    Manual 03 shows on page 171 the title Tiantan 天坛 714 but on the model picture we can see Tiantan 天坛 714A. Therefore we don't know which model it really is.
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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