Zuanshi 钻石 7ZK-1
Shanghai No.4 上海市第四钟厂 Shanghaishi No.4 Clock Factory; Shanghai
- Country
- People's Republic of China
- Manufacturer / Brand
- Shanghai No.4 上海市第四钟厂 Shanghaishi No.4 Clock Factory; Shanghai
- Year
- 1968 ??
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 179112
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Transistors
- 8
- 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: Zuanshi 钻石 7ZK-1 - Shanghai No.4 上海市第四钟厂
- Notes
- The radio model Zuanshi 钻石 7ZK-1 (Diamond) has the following key features 主要性能: Frequency range 频率范围: broadcast band 535 - 1605 kHz. Sensitivity 灵敏度: < 1 mV/m. Selectivity 选择性: > 14 dB S/N. Set audio output 额定功率: 100 mW (300 mW). Electric power consumption 电源消耗 at zero signal 零信号: 12 mA. The IF 中频频率 is most probably 465 kc. Loudspeaker impedance is 8 ohm. 1 diode.
- Literature/Schematics (1)
- 02-Radio Manual unknown date, 380 pages (page 304.)
- Author
- Model page created by Ernst Erb. See "Data change" for further contributors.
- Other Models
-
Here you find 2 models, 1 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Shanghai No.4 上海市第四钟厂 Shanghaishi No.4 Clock Factory; Shanghai