- Country
- People's Republic of China
- Manufacturer / Brand
- Tianjin 天津渤海无线电厂 Tianjin Bohai Radio Factory; Tianjin (N)
- Year
- 1972 ??
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 181099
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
- 5 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
- Plastics (no bakelite or catalin)
- from Radiomuseum.org
- Model: Haiou 海鸥 702 - Tianjin 天津渤海无线电厂
- Shape
- Portable set > 8 inch (also usable without mains)
- Notes
- The radio model Haiou 海鸥 702 (Seagull) has the following key features 主要性能: Frequency range 频率范围: broadcast band 535 - 1605 kc and SW 3.9 - 12 mc. Set audio output 额定功率: 100 mW (400 mW). The IF 中频频率 is most probably 465 kc. Loudspeaker impedance is 8 ohm. 2 diodes.
- Literature/Schematics (1)
- 03-Transistor Radio Circuit Manual 1981 August (1 of 5) (page 202.)
- Author
- Model page created by Ernst Erb. See "Data change" for further contributors.
- Other Models
-
Here you find 25 models, 16 with images and 23 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Tianjin 天津渤海无线电厂 Tianjin Bohai Radio Factory; Tianjin (N)