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source:Industry News release time:2020-11-30 Article author:sznbone Popular:Prison Jamming system
Cell phone jammer is mainly aimed at various places where the use of mobile phones is prohibited, such as various examination rooms, schools, gas stations, churches, courts, libraries, conference centers (rooms), theaters, hospitals, governments, finances, prisons, public security, and military powerhouses.
It is understood that mobile phone signal jammers on the market can limit mobile phone signals that are 500M meters away from the launching station and have a radius of >20 meters. The shielding radius is adjustable, it only shields the mobile phone signal without affecting other electronic devices. Save power, the power is 20W-480w.
When the mobile phone works, it is within a certain frequency range, the mobile phone and the base station are connected by radio waves, and the data and sound transmission are completed with a certain baud rate and modulation method. In view of this communication principle, the mobile phone signal jammer scans from the low end frequency of the forward channel to the high end at a certain speed during the working process. The mobile phone is manifested as a search network, no signal, no service system and other phenomena.
Common mobile phone signal jammers on the market have operating frequencies: 869~894MHz; 825~960MHz; 1805~1880MHz and 1900~1990MHz, etc. The operating frequency bands are CDMA800, GSM900, DCS1800, PCS1900, WCDMA, etc. It can control the range of about 40 meters in diameter, using DC-DC converter input voltage and 5V output voltage.
Applicable place
1. Protection of communication signals of border operators
2. Army combat needs
3. Detention centers, labor reform teams, large and medium-sized prisons
4. Large gathering place
5. Safety precautions for leaders' visits
6. College entrance examination, adult college entrance examination, self-study examination and various colleges and universities
7. Various large, medium and small meeting rooms, concert halls, theaters for party and government agencies and enterprises
8. Inflammable and explosive places such as gas stations, oil depots, oil fields, gas stations, etc.
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