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Zhongshan 钟山 J302

Zhongshan 钟山 J302; Nanjing 南京无线电仪... (ID = 769815) Radio
 
Zhongshan 钟山 J302; Nanjing 南京无线电仪... (ID = 769816) Radio
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Zhongshan 钟山 J302; Nanjing 南京无线电仪... (ID = 769815) Radio
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Country:  People's Republic of China
Manufacturer / Brand:  Nanjing 南京无线电仪器厂 Nanjing Radio Apparatus Factory; Zhongshan
Year: 1966 ?? Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 2AP1
Semiconductors (the count is only for transistors) 3: 3AG1D 3AG1D 3AX71B 2AP9
Main principle Superheterodyne (common); ZF/IF 465 kHz; 2 AF stage(s); Reflex
Tuned circuits 4 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Dry Batteries / 4.5 Volt
Loudspeaker Permanent or electro-dynamic (moving coil), system not known yet.
Power out
from Radiomuseum.org Model: Zhongshan 钟山 J302 - Nanjing 南京无线电仪器厂
Material Plastics (no bakelite or catalin)
Shape Very small Portable or Pocket-Set (Handheld) < 8 inch.
Notes Model Zhongshan 钟山 J302 shows a rather simple but intelligent reflex superhet. For adjusting the base current of BG2 for the used transistor in the factory a pontentiometer-trimmer is used.
Literature/Schematics (1) 01-Transistor Radio Manual 1972, 2nd Ed. 2nd Print 1983 (page 6.)

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



All listed radios etc. from Nanjing 南京无线电仪器厂 Nanjing Radio Apparatus Factory; Zhongshan
Here you find 3 models, 1 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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