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During the college entrance examination, the school will turn on the wireless wifi signal jammer, which will damage the call quality of customers around the examination room, such as: frequent call failures, disconnection, loss, occasional voice chat, slow Internet, etc., which will return to normal after the examination. In addition, in order to ensure smooth signals near the school, the operator has arranged in advance for communication engineers to test the entrances and exits of each examination point and the lounge for parents who send their children to the examination, and to expand the hardware and software of the surrounding communication base stations to ensure that high traffic and high flow can be guaranteed during the test period.
8 Antennas Jammer
In addition to the data signal WiFi room being blocked, everyone tries to ensure that your communication is smooth. As we know, every year in the college entrance examination, in order to prevent cheating in the examination, all communication signals in the examination room will be blocked. There is a mobile phone jammer in the examination room. At the same time, there is a wireless communication detector outside the examination room that can help solve the radio wave signals in these frequency bands that the wifi signal jammer cannot take care of, and monitor the electromagnetic wave signals of unknown origin in real time. The basic principle of the wifi signal jammer used in the college entrance examination is to submerge the effective radio wave signal into a lot of useless signals. So if the mobile phone is blocked, what should I do?
Method 1. Because the development trend of cheating fi network is very fast, and now it has developed to 4G on the Internet, many examination halls use signal jammers with older specifications and models, and are helpless with 3G and even the current 4G Internet technology. The cracking method: choose 3G or 4G. It feels like there is no 2G Internet technology now.
Method 2. In addition to the data signal being blocked during the test, everyone tries to ensure that your communication is smooth. We know that in order to avoid cheating in the exam, WiFii will not only block all communication signals in the examination room. There is a mobile phone blocker in the examination room. At the same time, there is a wireless communication detector outside the examination room that can help solve the radio wave signals of these frequency bands that the mobile phone blocker cannot take care of, and monitor the electromagnetic wave signals of unknown origin in real time. The basic principle of the signal blocker used in the college entrance examination is to submerge the effective radio wave signal into a lot of useless signals. So if the mobile phone is blocked, what should I do?
Method 3. WIFI decryption method. This method has relatively high environmental requirements, provided that there must be a usable WiFi network around. Some mobile phone signal blockers can not only block WIFI signals, but also complete external communications.
Method 5. Bluetooth decryption method. Suitable for short-distance communication in the shielded area. It is very likely that some jammers ignore the transmission function of Bluetooth and do not block it. Therefore, we only need to install Bluetooth information software on the mobile phone to connect to WiFi normally in a small range. With the rapid development of the Internet, mobile signal jammers are still being upgraded, and the cost is relatively low. You only need to add the frequency band of a given network to the interference team to block all wireless communications.
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