Can I Permanently Block A Cell Phone Number Prevents Student Cheating

Perfectjammer 2022/04/07

As we all know, in many places in daily life, using mobile phones such as exams, reporting work, etc. is very problematic. In such a situation, in addition to handing in mobile phones early, we will continue to use stable Can I Permanently Block A Cell Phone Number , reasonable shielding of specific Mobile phone data signals and Wi-Fi signals within the scope of the occasion, then where can cell phone jammer actually be used? There is no doubt that everyone will encounter various exams in their life, from elementary school to junior high school, to this year's college entrance examination , teaching examinations, civil service recruitment and other examinations, to ensure the fairness and reasonableness of the examinations, and to prevent students from cheating. Every large, medium and small exam will choose a full-band shield with good functions to shield the data signal in the exam room, so that it is impossible to communicate and surf the Internet.

At this stage, there are many kinds of jammers on the market, with different signal strengths, interference frequency bands, and coverage areas. Especially in some "three-no" products, the quality is not smooth, the transmission index value is poor, and the microwave radio frequency module is not divided into segments. Manipulation, the uplink and downlink frequencies interfere together. Through the specific detection and mastery of the performance indicators of various mobile phone signal jammers, Can I Permanently Block A Cell Phone Number According to the performance indicators, it can be divided into three categories, one is a single wireless channel jammer with low output power, the signal strength is about 1 watt, and the interference range is several meters to several meters. Ten meters; the other type is a small output power multi-wireless channel mobile phone signal jammer, the signal strength of the stand-alone version is 5-10 watts, the signal strength of each wireless channel is 1-5 watts, and the shielding range is several meters to tens of meters; the third type is High-power or ultra-high-power jammers are generally dedicated to special industries, such as dedicated jammers for public security organs and judicial departments. The output power varies from tens of watts to hundreds of tens of watts. Not only a single wireless channel, but also many wireless channel.

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