Hongxing 红星 (Red Star) DF111

Nanjing 南京东方无线电厂 Nanjing Eastern Radio Factory; Nanjing

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  • Year
  • 1968 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 181515

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

 Technical Specifications

  • Number of Transistors
  • 10
  • Main principle
  • Superheterodyne (common); ZF/IF 465 kHz; 4 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)
  • from Radiomuseum.org
  • Model: Hongxing 红星 DF111 - Nanjing 南京东方无线电厂
  • Shape
  • Tablemodel, low profile (big size).
  • Dimensions (WHD)
  • 310 x 135 x 90 mm / 12.2 x 5.3 x 3.5 inch
  • Notes
  • The model Hongxing 红星 DF111 (Red Star) has the following key features 主要性能: Frequency range 频率范围: broadcast band 525 - 1605 kc. Sensitivity 灵敏度: < 1 mV/m. Selectivity 选择性: > 18 dB S/N. Set audio output 额定功率: 250 mW. Electric power consumption 电源消耗 at zero signal 零信号: 20 mA, at max. it is 120 mA. The IF is 465 kc. Loudspeaker impedance is 8 ohm. 3 diodes plus 2 transitors 3DG6S, used as diodes. 3DX2 is in the schematic - could it be 3BX2?
    The manual 02 lists as factory Shanghai No.2 Radio Factory and manual 03 as Nanjing Dongfang (Eastern) Radio Factory 南京东方无线电厂. Manual 3 gives the details which manual 02 is not listing.
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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