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Tiantan 天坛 TTB

Tiantan 天坛 TTB; Beijing 北京崇文广播器材厂 (ID = 817505) Radio
 
Tiantan 天坛 TTB; Beijing 北京崇文广播器材厂 (ID = 817506) Radio
Tiantan 天坛 TTB; Beijing 北京崇文广播器材厂 (ID = 814865) Radio
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Tiantan 天坛 TTB; Beijing 北京崇文广播器材厂 (ID = 814865) Radio
Beijing 北京崇文广播器材厂: Tiantan 天坛 TTB [Radio] ID = 814865 688x574
Select picture or schematic to display from thumbnails on the right and click for download.
For model Tiantan 天坛 TTB, Beijing 北京崇文广播器材厂 Beijing Chong Wen Broadcast Equipment Factory; Beijing :
Picture from the Transistor Radio Circuit Manual August 1981 vol. 1 of 5 (internal 03), page 173 for reference when somebody is uploading real photos and as reference for collectors, comparing models.
 
Country:  People's Republic of China
Manufacturer / Brand:  Beijing 北京崇文广播器材厂 Beijing Chong Wen Broadcast Equipment Factory; Beijing
Year: 1972 ?? Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 7: 3DG6 3DG6 3DG6 3DG6 3AX21 3BX31 3AX21 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 / 6 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
Power out
from Radiomuseum.org Model: Tiantan 天坛 TTB - Beijing 北京崇文广播器材厂 Beijing
Material Modern plastics (no Bakelite or Catalin)
Shape Portable set > 8 inch (also usable without mains)
Notes The model Tiantan 天坛 TTB (Temple of heaven) has the following key features 主要性能: Frequency range 频率范围: broadcast band 525 - 1605 kc. Sensitivity 灵敏度: < 1 mV/m. Selectivity 选择性: 14 dB N/S. Set audio output 额定功率: 150 mW (250 mW). Electric power consumption 电源消耗 at zero signal 零信号: is20 mA, at max. output 80 mA. The IF 中频频率 is 465 kc. Loudspeaker impedance is 8 ohm. 4 diodes.
Literature/Schematics (1) 03-Transistor Radio Circuit Manual 1981 August (1 of 5) (page 173.)

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



All listed radios etc. from Beijing 北京崇文广播器材厂 Beijing Chong Wen Broadcast Equipment Factory; Beijing
Here you find 3 models, 3 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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