College entrance exam candidates use 'high-tech communication equipment' to cheat

Nowadays, mobile phones have become a must-have in our lives, just like our organs. The biggest credit for the rapid development of the communication industry is due to the construction of base stations in our country. Mobile phones have signals no matter where they are used, but there are also some There is no signal in places that are not covered by the base station. In addition, in some special areas, mobile phones cannot be used or answered. But we know how the mobile phone needs to be used normally? The first step is to establish a connection with a nearby mobile phone base station. If you hold a mobile phone in your right hand and a mobile phone in your right hand, and use the mobile phone in your right hand to make a call to the mobile phone in your right hand, the radio waves of the mobile phone are not as simple as being transmitted from your right hand to your right hand immediately, but will be detoured from the right hand mobile phone for 500 meters. outside the base station of the mobile phone, and then go around in a big circle and send back to the right-hand mobile phone outside the WiFii function). Under normal circumstances, the mobile phones in the base station are chatting in full swing, and the electromagnetic wave data signals sent by each other can come and go freely, but when the full-band jammer is turned on, it will go to the mobile phone and "gongs and drums" will be louder than the received base station signal. The multiple "noise" electromagnetic wave data signal, the mobile phone can't hear what the base station is discussing, can't receive the signal of the base station normally, the connection between the two is disconnected, and the mobile phone will become a deserted island. All kinds of functions are in the state of hemiplegia.

The entire frequency band of radio waves ranges from the smallest few Hz to the largest tens of hundreds of GHz. The range is very large, and each segment may be used as a communication signal. However, except for a small number of highly technical machines, ordinary full-band jammers are "The voice is too small", "the tone is not complete", a full-band jammer only interferes with a small part of the frequency bands, and the communication tool can use the frequency bands that are not interfered to carry out communication. Naturally, all 2G, 3G, 4G, and 5G mobile phone service items of several domestic communication operators may be concentrated in a few small frequency bands, and the mobile phone signal jammer in the examination room can still deal with it in multiple ways these frequency bands. When the cell phone signal jammer in the examination room is working, it will "shoot" radio waves from low frequency to high frequency in each frequency band, which will interfere with the connection between the mobile phone and the base station.

Candidates in the college entrance examination use "high-tech communication equipment" to cheat. Can mobile phone signal jammers in the examination room prevent candidates from cheating?

In fact, the cell phone signal jammer in the examination room can effectively prevent candidates from using mobile phones to cheat, but there are always some opportunistic people who will use other communication tools, such as: buy the answer and put the correct answer in their hands. Special radio transmitters, Cheating candidates will carry a wireless communication signal receiver to transmit the correct answer to the test question based on wireless communication. However, the Tao is one foot tall and the devil is ten feet tall. Chengdu 8341 Information Technology Co., Ltd. can achieve personalization. For 50--8000MHz, it is guaranteed to shield all signals well, so that cheaters have nowhere to hide. Only in this way can we perfectly ensure that college entrance examination candidates have a fair and open test environment.