• Year
  • 1966 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 174390

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

 Technical Specifications

  • Number of Transistors
  • 4
  • Main principle
  • Superheterodyne (common); ZF/IF 465 kHz; 2 AF stage(s); Reflex
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast plus 2 Short Wave bands.
  • Power type and voltage
  • Dry Batteries / 4 x 1.5 Volt
  • Loudspeaker
  • Permanent or electro-dynamic (moving coil), system not known yet.
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: Gongnongbing 工农兵 2P6 - Tianjin 天津渤海无线电厂
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 215 x 127 x 50 mm / 8.5 x 5 x 2 inch
  • Notes
  • The brand Gongnongbing, 工农兵, in Mandarin gōng​nóng​bīng​ (trad. Chinese 工農兵) was also used by Shanghai 2nd Wireless Factory. It means "workers, peasants, and soldiers". This is an interesting reflex circuit (BG3), having 6 tuned circuits, 2 AF stages plus automatic gain control (AGC) with 4 transistors! Temperature control with diode D3.
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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