Since the advent of the wifi jammer, it has become indispensable invigilation equipment for all examination rooms. Thanks to these wifi signal jammer manufacturers, they have developed this kind of equipment. The college entrance examination is not a simple test for students, but every student Students are thinking about the final sprint in the examination room for their own ideals. In fact, for postgraduate examinations, civil service examinations, and other various qualification certificate tests, they must assemble wifi jammer device to prevent students from using Internet wireless network signals to Make connections with the outside world and avoid college students. Nowadays, wifi signal jammers are all shielded in the whole frequency band, which can reasonably block the 2G3G4G5G signals, 2.4GWIFI signals, and mobile phone Bluetooth signals of the three major operators groups of China Mobile, China Telecom, and China Unicom. Its basic concept is to pass through its own The transmitted frequency interferes with the receiving frequency generated by the base station and router, so as to achieve the shielding purpose.
When you turn on the wifi frequency jammer, you will find that the mobile phone has no signal suddenly, and the phone cannot be connected. What is going on? In the very beginning, wifi signal blockers only open to interfere with one internet, such as 2G, while cumbersome jammers can additionally interfere with several types of internet technologies, such as 2-3-4-5G. So how do so many networks interfere? In fact, it is not very difficult to continuously match the interference bands of these three signals in a cyclical manner, and at the same time cover the three interference bands. The intervals of these cycles are so small that the mobile phone has no chance to speak, and can only sit and be quiet. make a brick. Covering 2/3/4/5G, what about mobile phone Bluetooth and WiFi? It doesn't matter, the same can be easily handled. Jammers have evolved again, adding the frequency bands of mobile phone Bluetooth and WiFi to the range of scanners, and the extensive communication methods in society will be exhausted.
