With the rapid development of science and technology, mobile phones have become a part of our lives as a means of communication. At present, they are inseparable from mobile phones. However, when mobile phones appear in some situations, they should not be used. Students use mobile phones to cheat in exams, which is very troubling for teachers. In order to address this phenomenon and conduct a fair and just examination, the wireless jammer can play a role.
When we walked into the examination room, we suddenly found that the mobile phone signal was gone, and the functions such as making calls and sending text messages could not be used normally. If we wanted to use mobile phones to cheat on the Internet, it was even more impossible. As a shielding tool in the examination, signal shielding equipment has a strong ability to shield signals. Generally, the wireless jammer in hand should be placed in the middle of the shielded signal area to ensure the maximum shielding range. After the power is turned on, confirm that the machine can be powered on normally, and then turn on the switch. After a minute or two, the mobile phone will show no signal, so as to achieve the purpose of shielding signals. The root cause is that the wireless signal frequency band sent by the shielding device during operation covers the signal frequency band of the base station, and the mobile phone naturally cannot receive signals within the working range of the wireless jammer. As long as the wireless jammer is turned off or out of its shielding range, the mobile phone will re receive the signal of the base station, and it can be used normally.