• Country
• People's Republic of China

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

• Year
• 1980 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 178415

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

• Number of Transistors
• 9

• Semiconductors
• 3AG21 3AG21 3AG21 3AG21 3AX21 3AX22 3DX104 3AX81B 3AX81B 2AP9 2AP9

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

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / D: 4 x 1.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 13 cm = 5.1 inch

• Power out
• 0.15 W (0.5 W max.)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Peony 牡丹 9 Transistor 942 - Beijing 北京无线电厂 Beijing Radio

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

• Notes
• The radio model Peony 牡丹 942 (Mudan) offers the following key features 主要性能: Frequency range 频率范围: broadcast 525 - 1605 kc. Sensitivity 灵敏度: < 1 mV/m. Selectivity 选择性: > 16 dB S/N. Set audio output 额定功率: 150 mW (500 mW). Electric power consumption 电源消耗 at zero signal 零信号: 18 mA, at max. it is 80 mA. The IF 中频频率 is most probably 465 kc. Loudspeaker impedance is 8 ohm. See also term: 不失真功率 not distorted audio output : 大 于Larger than 250 mW. The IF 中频频率 is most probably 465 kc. Loudspeaker impedance is 8 ohm. 2 diodes.

• Mentioned in
• 03-Transistor Radio Circuit Manual 1981 August (1 of 5) (page 341.)

• Literature/Schematics (1)
• 02-Radio Manual unknown date, 380 pages (page 215.)

• 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