How much range can the mobile phone signal jammer in the examination room block?
For important admissions, professional qualification examinations or final exams, examination room signal jammers must be installed to block electronic signals around the examination room to avoid possible electronic cheating.
So, how much coverage can the cell phone signal jammer in the examination room block? Can an examination room only use one jammer to achieve the shielding purpose? How many jammers should be used in a teaching building?
First of all, we need to understand: the mobile phone signal jammer in the examination room has a theoretical shielding range, which is about 0-20 meters longitude. But it must be noted that this is also a theoretical distance. The expected effect depends on the local reception sensitivity, especially whether there are signal base stations nearby. If there are signal base stations around 200 meters away, the shielding effect will be compromised.
In addition, the wall will also weaken the shielding effect of the jammer. Because the signal is stronger near the window, the shielding effect will be weaker.
Standard classrooms in schools are generally about 75 square meters, and equipping each classroom with a jammer can achieve good results. It can be placed in the middle of the classroom to shield a large area. Of course, this needs to be combined with power supply wiring. It is also common to place the jammer at the podium.
If there is a base station in or near a higher classroom, you can place two jammers in each classroom, one on the front and one on the left. Because the shielded signal is cumulatively increased, a stronger effect of 1+1>2 will be achieved. .
In addition, in order to better ensure the shielding effect, another signal jammer for sale can be placed every 10-20 meters in the corridor of the teaching building.
Finally, it should be noted that the best installation height of the jammer is 1.5-2 meters away from the road.
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