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Songhuajiang 松花江 4791

Songhuajiang 松花江 4791; Hangzhou No.4 杭州无... (ID = 817890) Radio
 
Songhuajiang 松花江 4791; Hangzhou No.4 杭州无... (ID = 817891) Radio
Songhuajiang 松花江 4791; Hangzhou No.4 杭州无... (ID = 814873) Radio
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Songhuajiang 松花江 4791; Hangzhou No.4 杭州无... (ID = 814873) Radio
Hangzhou No.4 杭州无...: Songhuajiang 松花江 4791 [Radio] ID = 814873 652x554
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For model Songhuajiang 松花江 4791, Hangzhou No.4 杭州无线电四厂 Hangzhou No.4 Radio Factory; Hangzhou:
Picture from the Transistor Radio Circuit Manual August 1981 vol. 1 of 5 (internal 03), page 190 for reference when somebody is uploading real photos and as reference for collectors, comparing models.
 
Country:  People's Republic of China
Manufacturer / Brand:  Hangzhou No.4 杭州无线电四厂 Hangzhou No.4 Radio Factory; Hangzhou
Year: 1972 ?? Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 7: 3AG1E 3AG1D 3AG1D 3AX31B 3AX31B 3AX81B 3AX81B 2AP9 2AP9 2CK 2CK
Main principle Superheterodyne (common); ZF/IF 465 kHz; 3 AF stage(s)
Tuned circuits 6 AM circuit(s)
Wave bands Broadcast and Short Wave (SW).
Details
Power type and voltage Dry Batteries / 6 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
Power out
from Radiomuseum.org Model: Songhuajiang 松花江 4791 - Hangzhou No.4 杭州无线电四厂
Material Wooden case
Shape Tablemodel, low profile (big size).
Dimensions (WHD) 400 x 225 x 165 mm / 15.7 x 8.9 x 6.5 inch
Notes The model Songhuajiang 松花江 4791 (Songhua River) has the following key features 主要性能: Frequency range 频率范围: broadcast band 525 - 1605 kc and SW 3.9 - 12 mc. Sensitivity 灵敏度: < 1 mV/m (0.1 mV/m). Selectivity 选择性: 26 dB N/S. Set audio output 额定功率: 300 mW. Electric power consumption 电源消耗 at zero signal 零信号: is not given. The IF 中频频率 is most probably 465 kc. Loudspeaker impedance is 8 ohm. 4 diodes.
Literature/Schematics (1) 03-Transistor Radio Circuit Manual 1981 August (1 of 5) (page 190.)

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



All listed radios etc. from Hangzhou No.4 杭州无线电四厂 Hangzhou No.4 Radio Factory; Hangzhou
Here you find 6 models, 6 with images and 6 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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