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Yingge 莺歌 712

Yingge 莺歌 712; Nanjing 南京红旗无线... (ID = 802633) Radio
 
Yingge 莺歌 712; Nanjing 南京红旗无线... (ID = 821355) Radio
 
Yingge 莺歌 712; Nanjing 南京红旗无线... (ID = 821356) Radio
Yingge 莺歌 712; Nanjing 南京红旗无线... (ID = 817089) Radio
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Yingge 莺歌 712; Nanjing 南京红旗无线... (ID = 817089) Radio
Nanjing 南京红旗无线...: Yingge 莺歌 712 [Radio] ID = 817089 630x528
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For model Yingge 莺歌 712, Nanjing 南京红旗无线电厂 Nanjing Hongqi Radio Factory; Nanjing (Jiangsu, E):
Picture from the Transistor Radio Circuit Manual August 1981 vol. 1 of 5 (internal 03), page 289 for reference when somebody is uploading real photos and as reference for collectors, comparing models.
 
Country:  People's Republic of China
Manufacturer / Brand:  Nanjing 南京红旗无线电厂 Nanjing Hongqi Radio Factory; Nanjing (Jiangsu, E)
Year: 1968 ?? Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 7: 3AG1 3AG1 3AG1 3AK19 3AK19 3AX31 3AX19 2CK 2CK 2AP9 2AP9
Main principle Superheterodyne (common); 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 / 4.5 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
Power out
from Radiomuseum.org Model: Yingge 莺歌 712 - Nanjing 南京红旗无线电厂
Material Plastics (no bakelite or catalin)
Shape Portable set > 8 inch (also usable without mains)
Notes The model Yingge 莺歌 712 ("songs of the oriole") 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. Selectivity 选择性: > 16 dB S/N. Set audio output 额定功率: 100 mW. Electric power consumption 电源消耗 at zero signal 零信号: 15 mA, at max. it is 65 mA. The IF 中频频率 is most probably 465 kc. Loudspeaker impedance is 8 ohm. 4 diodes. Output transistors: manual 03 shows 2 x 3AX31.
Mentioned in 03-Transistor Radio Circuit Manual 1981 August (1 of 5) (page 289.)
Literature/Schematics (1) 02-Radio Manual unknown date, 380 pages (page 292.)

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



All listed radios etc. from Nanjing 南京红旗无线电厂 Nanjing Hongqi Radio Factory; Nanjing (Jiangsu, E)
Here you find 4 models, 1 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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