During the examination season, all ordinary colleges and universities and the education departments of all districts must strengthen positive publicity, and do a good job in policy interpretation, voluntary reporting, information inquiry, and warm reminders. Strengthen the integrity education of candidates, focus on publicizing the laws and regulations involved in the examination, and educate and guide candidates to consciously resist violations of discipline and fraud. There has been cheating in all examinations of the past dynasties. With the development of technology, more and more cheating using mobile phones. It has become an issue that the education sector is paying more and more attention to. In order to ensure the information security of the examination room, some ordinary colleges and universities generally adopt How To Build A Cell Phone Jammer , cell phone jammer Carry out external signal interference in a certain range. Today I will talk to you about how the school mobile phone signal jammer interferes with the mobile phone signal.
To understand how How To Build A Cell Phone Jammer interferes with mobile phone signals, you must first know the working principle of mobile communication. Simply put, it is within a certain frequency range. The mobile phone and the base station are connected by radio waves, and are completed with a certain baud rate and modulation method. Transmission of data and sound. The mobile phone communicates with the base station through the uplink frequency, and then transfers the signal to the MSC (Mobile Services Switching Center) to realize the call. In the standby state, the mobile phone communicates with the base station through the BCH broadcast control channel. Once there is a call demand, first ask the MSC through the BCH. The MSC allocates the mobile phone business channel according to the channel status, so that the mobile phone jumps from the BCH to the business channel Realize the call.
