• 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
• 182294

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

• Number of Transistors
• 12

• Semiconductors
• 3AG1E 3AG1B 3AG1B 3AG1B 3AX31D 3AX31D 3AX31B 3AX31B 3AX31B unknown_tr 3AD6C 3AD6C 2AP10 2AP9 2CW15 2DS1

• Main principle
• Superheterodyne (common); ZF/IF 465 kHz

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast plus 2 Short Wave bands.

• Power type and voltage
• Alternating Current supply (AC) / 220 Volt

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

• from Radiomuseum.org
• Model: Spring Thunder 春雷 3T4 - Shanghai No.3 上海无线电三厂

• Shape
• Tablemodel, low profile (big size).

• Notes
• The radio model Spring Thunder 春雷 3T4 (Chunlei 春雷 3T4) offers the following key features 主要性能: Frequency range 频率范围: broadcast 535 - 1605 kc and SW 3.9 - 8.5 mc and 8.5 - 18 mc. Sensitivity 灵敏度: < 1 mV/m. Selectivity 选择性: > 26 dB S/N. Set audio output 额定功率: 200 mW. The IF 中频频率 is most probably 465 kc. Loudspeaker impedance is 8 ohm. 8 diodes, 4 of them for the power supply (QSE-1A/30V).

• Literature/Schematics (1)
• 03-Transistor Radio Circuit Manual 1981 August (1 of 5) (page 358.)

• 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