• Country
• People's Republic of China

• Manufacturer / Brand
• Beijing 北京无线电厂 Beijing Radio Factory; Beijing

• Year
• 1966 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 175908

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

• Number of Transistors
• 6

• Semiconductors
• 3AG23 3AG21 3AG21 3AX21 3AX81B 3AX81B 2AP9 2AP9 2AP9

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

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast plus 2 Short Wave bands.

• Power type and voltage
• Dry Batteries / 9 Volt

• Loudspeaker
• Permanent or electro-dynamic (moving coil), system not known yet.

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Hongqi 红旗 643 - Beijing 北京无线电厂 Beijing Radio

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

• Dimensions (WHD)
• 400 x 200 x 160 mm / 15.7 x 7.9 x 6.3 inch

• Notes
• The model Hongqi 红旗 604 has broadcast band and the two SW bands for 2.2 to 6 MHz and 6 to 12 MHz.

• Literature/Schematics (1)
• 01-Transistor Radio Manual 1972, 2nd Ed. 2nd Print 1983 (page 156.)

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

• Other Models

• Here you find 20 models, 15 with images and 18 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Beijing 北京无线电厂 Beijing Radio Factory; Beijing