- Country
- People's Republic of China
- Manufacturer / Brand
- Tianjin 天津渤海无线电厂 Tianjin Bohai Radio Factory; Tianjin (N)
- Year
- 1968 ??
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 181158
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 only (MW).
- 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 711 - Tianjin 天津渤海无线电厂
- Shape
- Portable set > 8 inch (also usable without mains)
- Dimensions (WHD)
- 255 x 127 x 56 mm / 10 x 5 x 2.2 inch
- Notes
- The model Haiou 海鸥 711 (Seagull) has the following key features 主要性能: Frequency range 频率范围: broadcast band 535 - 1605 kc. Sensitivity 1 mV/m, selectivity 16 dB (S/N). Set audio output 额定功率: 100 mW (400 mW). The IF is 465 kc. Loudspeaker impedance is 8 ohm. 2 diodes.
Possibly model 706 and 711 share the same schematic as 703. Careful, there is a model Haiou 海鸥 711 from¨上海长空无线电厂 Shanghai Changkong Radio Factory and from 天津渤海无线电厂 Tianjin Bohi Radio Factory - with the same characteristics.
- Literature/Schematics (1)
- 03-Transistor Radio Circuit Manual 1981 August (1 of 5) (page 217.)
- 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)