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Xihu 西湖 7B12

Xihu 西湖 7B12; Hangzhou 杭州群英无... (ID = 802605) Radio
 
Xihu 西湖 7B12; Hangzhou 杭州群英无... (ID = 819953) Radio
 
Xihu 西湖 7B12; Hangzhou 杭州群英无... (ID = 819954) Radio
Xihu 西湖 7B12; Hangzhou 杭州群英无... (ID = 817085) Radio
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Xihu 西湖 7B12; Hangzhou 杭州群英无... (ID = 817085) Radio
Hangzhou 杭州群英无...: Xihu 西湖 7B12 [Radio] ID = 817085 652x641
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For model Xihu 西湖 7B12, Hangzhou 杭州群英无线电厂 Hangzhou Qunying Radio Factory; Hangzhou :
Picture from the Transistor Radio Circuit Manual August 1981 vol. 1 of 5 (internal 03), page 279 for reference when somebody is uploading real photos and as reference for collectors, comparing models.
 
Country:  People's Republic of China
Manufacturer / Brand:  Hangzhou 杭州群英无线电厂 Hangzhou Qunying Radio Factory; Hangzhou
Year: 1968 ?? Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 7: 3DG201C 3DG 3DG6 3DG 3DG6 3AX31B 3AX31B 2CP 2CP 2AP9 2AP9 2AP9
Main principle Super-Heterodyne (Super in general); ZF/IF 465 kHz; 3 AF stage(s)
Tuned circuits 5 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Dry Batteries / 3 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
Power out
from Radiomuseum.org Model: Xihu 西湖 7B12 - Hangzhou 杭州群英无线电厂
Material Modern plastics (no Bakelite or Catalin)
Shape Portable set > 8 inch (also usable without mains)
Notes The model Xihu 西湖 7B12 (West Lake) has the following key features 主要性能: Frequency range 频率范围: broadcast band. Sensitivity 灵敏度: < 1 mV/m. Selectivity 选择性: > 20 dB S/N (10 kc at 1000 kc). Set audio output 额定功率: 100 mW. The IF 中频频率 is most probably 465 kc. Loudspeaker impedance is 8 ohm. 5 diodes.
Mentioned in 03-Transistor Radio Circuit Manual 1981 August (1 of 5) (page 279.)
Literature/Schematics (1) 02-Radio Manual unknown date, 380 pages (page 272.)

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



All listed radios etc. from Hangzhou 杭州群英无线电厂 Hangzhou Qunying Radio Factory; Hangzhou
Here you find 8 models, 3 with images and 8 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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