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Zuanshi 钻石 7T1

Zuanshi 钻石 7T1; Guangdong No.1 广东... (ID = 817981) Radio
 
Zuanshi 钻石 7T1; Guangdong No.1 广东... (ID = 817982) Radio
Zuanshi 钻石 7T1; Guangdong No.1 广东... (ID = 817064) Radio
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Zuanshi 钻石 7T1; Guangdong No.1 广东... (ID = 817064) Radio
Guangdong No.1 广东...: Zuanshi 钻石 7T1 [Radio] ID = 817064 792x512
Select picture or schematic to display from thumbnails on the right and click for download.
For model Zuanshi 钻石 7T1, Guangdong No.1 广东省佛山市无线电一厂 Guangdongsheng No.1 Foshanshi Radio Factory: Foshan:
Picture from the Transistor Radio Circuit Manual August 1981 vol. 1 of 5 (internal 03), page 231 for reference when somebody is uploading real photos and as reference for collectors, comparing models.
 
Country:  People's Republic of China
Manufacturer / Brand:  Guangdong No.1 广东省佛山市无线电一厂 Guangdongsheng No.1 Foshanshi Radio Factory: Foshan
Year: 1972 ?? Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 11: 3DG52 3DG52 3DG52 3DG52 3AX31S 3AX31S 3AX31S 3AX 3DG 3AX 3AX
Main principle Super-Heterodyne (Super in general); ZF/IF 465 kHz; 4 AF stage(s)
Tuned circuits 4 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Dry Batteries / 1.5 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
Power out
from Radiomuseum.org Model: Zuanshi 钻石 7T1 - Guangdong No.1 广东省佛山市无...
Material Modern plastics (no Bakelite or Catalin)
Shape Portable set > 8 inch (also usable without mains)
Notes The radio model Zuanshi 钻石 7T1 has the following key features 主要性能: Frequency range 频率范围: broadcast band 535 - 1605 kc. Sensitivity 灵敏度: < 2 mV/m. Selectivity 选择性: 14 dB N/S. Set audio output 额定功率: 250 mW. Electric power consumption 电源消耗 at zero signal 零信号: is 25 mA and at max. output 280 mA. The IF 中频频率 is 465 kc. Loudspeaker impedance is 8 ohm. Two transistors are used as diodes. The model does not use a diode at all.
Literature/Schematics (1) 03-Transistor Radio Circuit Manual 1981 August (1 of 5) (page 231.)

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



All listed radios etc. from Guangdong No.1 广东省佛山市无线电一厂 Guangdongsheng No.1 Foshanshi Radio Factory: Foshan
Here you find 7 models, 1 with images and 7 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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