• Country
• People's Republic of China

• Manufacturer / Brand
• Beijing Shi 北京市宣武区无线电厂 Beijing Shi Xuanwuqu Radio Factory; Beijing Xuanwu

• Year
• 1968 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 178244

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

• Number of Transistors
• 6

• 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 / 1.5 Volt

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

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Hongmei 红梅 612 - Beijing Shi 北京市宣武区无线电厂 Beijing

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

• Notes
• The radio model Hongmei 红梅 612 (Red Plum) has the following key features 主要性能: Frequency range 频率范围: broadcast band 535 - 1605 kc. Sensitivity 灵敏度: < 1 mV/m. The IF 465 kc. Set audio output 额定功率 : 50 mW. Loudspeaker (150 mW) impedance is 8 ohm. 1 diode.

• Mentioned in
• 03-Transistor Radio Circuit Manual 1981 August (1 of 5) (page 60.)

• Literature/Schematics (1)
• 02-Radio Manual unknown date, 380 pages (page 157, drawing 81.)

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

• Other Models

• Here you find 1 models, 1 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Beijing Shi 北京市宣武区无线电厂 Beijing Shi Xuanwuqu Radio Factory; Beijing Xuanwu