Advances in science and technology have made the rapid development of smart phones possible. Smart phones have become a product of many people. Mobile phones on the market are cheap, easy to buy and easy to use. Many students now have their own mobile phones. In the Internet age, when using mobile phones to obtain data, mobile phones are their main learning tool, but they use mobile phones to play games and so on. This will have a big impact on your study. This not only affects the teacher's class, but also affects the study of other students, and more importantly, it delays their good study time. They also cheat with their mobile phones. The violation forced schools to install What Does A Cell Phone Jammer Do , cut off phone signals and prevent their phones from connecting to the Internet. During the exam, turn on mobile phone protection to prevent students from cheating and ensure fairness in the exam. In some ways, using cell phone jammers in schools is a good thing. cell phone jammer When working, it will send out chaotic electromagnetic waves from low frequency to high frequency in various frequency bands, which will interfere with the connection between mobile phones and base stations.
For the current mainstream frequency sweepWhat Does A Cell Phone Jammer Do, when interfering with medium-strength communication signals, the effective interference radius is about 6m, the total transmission Power is about 15W, the antenna gain is 2-3dB, and the safety distance is about 5m. It can be seen that in this case, most The health of participants will be affected by interference radiation. There are many reasons for this problem. In addition to the use of the aforementioned anti-interference technology, wide bandwidth, multiple frequency bands, and frequency sweeping interference methods, there are also provisions to combat small-scale fading and occlusion in the process of wireless signal propagation. Power margin. For jammers, the anti-jamming technology, bandwidth and frequency band, and wireless signal propagation characteristics of the communication system cannot be changed.
