With the development of the market economy and the advancement of technology, mobile phones have become more and more common in our lives, and their functions have become more and more numerous. While mobile phones have brought us a lot of convenience, they have also brought us a lot of trouble. According to the report: “In class, students answer the phone or surf the Internet, chat with QQ, and play games, which are more serious. During the exam, some students also use 4G mobile phone jammers to cheat. ". When the Lion reporter browsed some forums, he pasted it and found that "there are many students posting on the Internet, but it is actually during class time." In the case of interference in classroom teaching activities, only by eliminating such interference and maintaining normal teaching order, The combination of ensuring that the quality of education does not fail the high expectations of students, parents and all sectors of society.

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Handheld cellphone jammer

For 4G mobile phone signal jammers, everyone knows that it will produce downlink interference, but due to the influence of many factors such as technology cost, price, production, etc., downlink interference is difficult to achieve, so that some unscrupulous manufacturers strengthen the interference effect, not the precise frequency The range setting can cause a certain amount of uplink interference energy. If it can significantly increase the interference, it will have a fluke effect, but at the expense of public interest; the mobile phone signal may be in the same room, in different places, and at different times. Larger changes can reach 10dBm according to actual experience, and the conversion success rate is calculated as a difference of 10 times. It can be seen that the mobile phone signal jammer is actually a very demanding technical project, and the purchase is not a simple matter of installing the jammer by yourself. On-site survey, power calculation, construction design, equipment debugging, etc. complement each other and are inseparable.

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In order to ensure that it does not cause adverse effects on the health of students, the school attaches great importance to product quality. The "jammers" installed are electromagnetic radiation that meets the relevant standards. Qualified products will not affect the school. The examination room has been used on the human body. It can be seen that when the school is doing it, the attitude is serious and the students are responsible. The range of "jammer" blocking signals is limited to classrooms, indicating that the school's actions are gentle and will not affect students' freedom of communication and freedom of speech. We have the right to exercise the entire border, and we cannot infringe on the rights of others and the public interest. The freedom of citizens is the same as the rights enjoyed by the Constitution and freedom of speech. We cannot go beyond our own limits. Students playing mobile phones in the classroom affect the normal educational order, and they should have the right to go beyond limits and should be restricted.

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