• Country
• People's Republic of China

• Manufacturer / Brand
• Shanghai No.3 上海无线电三厂 Shanghai No.3 Radio Factory: Shanghai

• Year
• 1972 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 182286

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

• Number of Transistors
• 9

• Semiconductors

• Main principle
• Superheterodyne (common); ZF/IF 465 kHz; 3 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast plus 2 Short Wave bands.

• Power type and voltage
• Line / Batteries (any type) / AC 220 / Battery 6 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Chunlei 春雷 3P7 [3DG6B ] - Shanghai No.3 上海无线电三厂

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 270 x 210 x 80 mm / 10.6 x 8.3 x 3.1 inch

• Notes
• The radio model Chunlei 春雷 3P7 (Spring Thunder) offers the following key features 主要性能: Frequency range 频率范围: broadcast 535 - 1605 kc and SW 3.9 - 9 mc plus 9 - 18 mc. Sensitivity 灵敏度: < 1 mV/m. Selectivity 选择性: not given. Set audio output 额定功率: not clear. Electric power consumption 电源消耗 at zero signal 零信号: 25 mA, at max. it is 250 mA. The IF 中频频率 is most probably 465 kc. Loudspeaker impedance is 16 ohm.

• Literature/Schematics (1)
• 03-Transistor Radio Circuit Manual 1981 August (1 of 5) (page 348.)

• Author
• Model page created by Ernst Erb. See "Data change" for further contributors.

• Other Models

• Here you find 49 models, 42 with images and 43 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Shanghai No.3 上海无线电三厂 Shanghai No.3 Radio Factory: Shanghai