• Country
• People's Republic of China

• Manufacturer / Brand
• Beijing 北京朝阳区无线电厂 Beijing Chaoyangqu Radio Factory; Beijing

• Year
• 1974 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 180412

• Number of Transistors
• 5

• Semiconductors

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

• 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: Kuihua 葵花 JS502-B - Beijing 北京朝阳区无线电厂 Beijing

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

• Notes
• The radio model Kuihua 葵花 JS502-B (Sunflower) has the following key features 主要性能: Frequency range 频率范围: broadcast band 535 - 1605 千赫 kc. 2 diodes 2AP9.

• Literature/Schematics (1)
• 04-Transistor Radio Circuit Manual, 1981 (316 pages) (page 9.)

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

• Other Models

• Here you find 8 models, 6 with images and 7 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Beijing 北京朝阳区无线电厂 Beijing Chaoyangqu Radio Factory; Beijing