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Sprint Cell Phone Call Blocking Prevents Exam Cheating

Perfectjammer 2022/06/25

Sprint Cell Phone Call Blocking

Over the past year, many candidates have been caught cheating on exams. More cheating tools have been discovered as police investigate. Although they have different looks, they have the same working principle of wireless cameras. So we recommend the adjustable 7W powerful full Sprint Cell Phone Call Blocking and WiFi GPS jammer for checking exam cheating devices in the hall. Preventing cheating tools by working manually isn't enough right now, you'll never know and be sure of the real thing you're seeing: a pen? This is a mini scanner. Eraser? No, it's a signal receiver, and other types of wireless spy cameras like glasses, watches. Some of the others are even super mini sizes! Spy earphones have a rice body that's really hard to find when it's hidden behind the ear; bone conduction earphones that know where to receive the ear when they vibrate; some crazy guy implants the signal receiver into the scalp.... .. all of these are against the rules and fair and serious - and should be punished.

Sprint Cell Phone Call Blocking In the examination room, in order to completely suppress all frequency bands of the three major operators, it is necessary to cover all the above 5G signal frequency bands, which is the most basic condition for signal shielding. At the same time, the interference intensity of mobile communication signals is divided into 5 levels. It is generally believed that only interference reaching level 4 or above will have a great impact on the communication signal. Quality assurance, the cell phone jammer interference in the test room can generally reach level 5, making the mobile phone a "brick". Judging from the practical application of the signal shielding device in the college entrance examination room, the standard mobile phone signal jammers in the college entrance examination room in some regions have achieved the 5G frequency band 3400MHz-3600MHz and 4800MHz-4900MHz frequency band shielding, which has covered all the N78 and N79 of China Telecom and China Unicom. However, China Mobile's N41 frequency band is between 2515MHz and 2675MHz, which is not within the suppression range of the signal shielding device, so the 5G signal can be connected to the test room, and it is not excluded that this frequency band is not covered. In addition, we also need to consider the influence of the actual use environment of the signal shielding device, including the position, height, obstacles, base station, etc. of the shielding device. If the position is too low or there are metal obstacles, it will also affect the shielding effect. , there is even a possibility that the signal jammer is not turned on correctly.

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