Songhuajiang 松花江 4791
Hangzhou No.4 杭州无线电四厂 Hangzhou No.4 Radio Factory; Hangzhou
- Country
- People's Republic of China
- Manufacturer / Brand
- Hangzhou No.4 杭州无线电四厂 Hangzhou No.4 Radio Factory; Hangzhou
- Year
- 1972 ??
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 181091
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Transistors
- 7
- Main principle
- Superheterodyne (common); ZF/IF 465 kHz; 3 AF stage(s)
- Tuned circuits
- 6 AM circuit(s)
- Wave bands
- Broadcast and Short Wave (SW).
- Power type and voltage
- Dry Batteries / 6 Volt
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
- Material
- Wooden case
- from Radiomuseum.org
- Model: Songhuajiang 松花江 4791 - Hangzhou No.4 杭州无线电四厂
- Shape
- Tablemodel, low profile (big size).
- Dimensions (WHD)
- 400 x 225 x 165 mm / 15.7 x 8.9 x 6.5 inch
- Notes
- The model Songhuajiang 松花江 4791 (Songhua River) has the following key features 主要性能: Frequency range 频率范围: broadcast band 525 - 1605 kc and SW 3.9 - 12 mc. Sensitivity 灵敏度: < 1 mV/m (0.1 mV/m). Selectivity 选择性: 26 dB N/S. Set audio output 额定功率: 300 mW. Electric power consumption 电源消耗 at zero signal 零信号: is not given. The IF 中频频率 is most probably 465 kc. Loudspeaker impedance is 8 ohm. 4 diodes.
- Literature/Schematics (1)
- 03-Transistor Radio Circuit Manual 1981 August (1 of 5) (page 190.)
- Author
- Model page created by Ernst Erb. See "Data change" for further contributors.
- Other Models
-
Here you find 6 models, 6 with images and 6 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Hangzhou No.4 杭州无线电四厂 Hangzhou No.4 Radio Factory; Hangzhou