Do other schools have this Cell Phone Signal Blocker Circuit Diagram ? Yesterday, we consulted the Municipal Education Bureau, and the relevant staff told us that mobile phone signal jammers are allowed to be used in schools. This is a hardware requirement of the Ministry of Education and other departments for students' exams. Like electronic monitoring, every middle school must be equipped. cell phone jammer of the middle schools in our city are uniformly equipped by the education department. However, the staff member also emphasized that the mobile phone signal jammer can only be used during the exam, and it is not allowed to use it when the exam is not taken. "Yesterday's high school mock exam was a relatively important exam, so you need to use a cell phone signal jammer at this time," the staff member said. Regarding the situation that the mobile phone jammer affects the mobile phone use of nearby residents, the staff member believes that "this kind of mobile phone jammer should have no effect when it leaves the classroom." However, we learned from the mobile phone signal jammer seller that the shielding range The size of the mobile phone jammer depends on the location and frequency of the mobile phone jammer. The range of the mobile phone jammer is circular, regardless of indoor and outdoor.
In this regard, the staff of the Municipal Radio Management Committee Office said that the principle of Cell Phone Signal Blocker Circuit Diagram is very simple, that is, the frequency of the mobile phone signal is affected by the frequency it emits. "If two people are talking, how do you keep their voices down? The answer is simple, as long as the third person speaks in a louder voice. Cell phone jammers are this 'third party'." The staff member explained that the cell phone signal jammer is essentially a radio transmitter. Regarding the working principle of mobile phone jammers, online sellers have such professional descriptions: The working principle of mobile phones is that within a certain frequency range, the mobile phone and the base station are connected by radio waves, and the data and transmission of sound.
