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Huangshan 黄山 403

Huangshan 黄山 403; Hefei 合肥无线电厂 (ID = 801857) Radio
Huangshan 黄山 403; Hefei 合肥无线电厂 (ID = 814487) Radio
Huangshan 黄山 403; Hefei 合肥无线电厂 (ID = 814488) Radio
Huangshan 黄山 403; Hefei 合肥无线电厂 (ID = 814824) Radio
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Huangshan 黄山 403; Hefei 合肥无线电厂 (ID = 814824) Radio
Hefei 合肥无线电厂: Huangshan 黄山 403 [Radio] ID = 814824 564x487
Select picture or schematic to display from thumbnails on the right and click for download.
For model Huangshan 黄山 403, Hefei 合肥无线电厂 Hefei Radio Factory; Hefei:
Picture from the Transistor Radio Circuit Manual August 1981 vol. 1 of 5 (internal 03), page 102 for reference when somebody is uploading real photos and as reference for collectors, comparing models.
Country:  People's Republic of China
Manufacturer / Brand:  Hefei 合肥无线电厂 Hefei Radio Factory; Hefei
Year: 1968 ?? Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 6: 3AG1C 3AG1B 3AG1B 3AX31B 3AX31B 3AX31B 2CP10 2CP10 2AP5 2AP9
Main principle Superheterodyne (common); ZF/IF 465 kHz; 2 AF stage(s)
Tuned circuits 5 AM circuit(s)
Wave bands Broadcast only (MW).
Power type and voltage Dry Batteries / 3 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
Power out
from Model: Huangshan 黄山 403 - Hefei 合肥无线电厂 Hefei Radio
Material Modern plastics (no Bakelite or Catalin)
Shape Very small Portable or Pocket-Set (Handheld) < 8 inch.
Notes The radio model Huangshan 黄山 403 (Huang Mountain in Anhui Province) has the following key features 主要性能: Frequency range 频率范围: broadcast band 535 - 1605 kc. The IF 中频频率 is most probably 465 kc. Sensitivity 灵敏度: < 1 mV/m. Selectivity 选择性: > 20 dB. Set audio output 额定功率: 100 mW. Electric power consumption 电源消耗 at zero signal 零信号: 12 mA, at mac. output 85 mA. Loudspeaker impedance is not mentioned. 4 diodes.
Mentioned in 03-Transistor Radio Circuit Manual 1981 August (1 of 5) (page 102.)
Literature/Schematics (1) 02-Radio Manual unknown date, 380 pages (page 174.)

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

All listed radios etc. from Hefei 合肥无线电厂 Hefei Radio Factory; Hefei
Here you find 5 models, 4 with images and 5 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.