There are many factors affecting the shielding distance of mobile jammers

At present, the power and channel of each base station are different, and the distance between each base station and the prison is also different. It is generally recommended that no base station is required within 200 meters or 300 meters of the surveillance area where the mobile phone signal jammer system is installed. If there is a base station, it is necessary to consider the impact of shielding strong signals on the base station with high probability. The size of each prison, the number of buildings, structure, size, floor height, etc. They are all different. The distribution direction, power, topography and other factors of mobile phone base stations around each prison are different, and the strength of mobile phone signals transmitted from remote base stations is also different. The distribution of sites in each prison needs to be designed according to the actual situation.

Generally, the transmission power of the test mobile cell phone jammer used in the test room is within 30W, then the mobile phone signal jammer in the test room has a theoretical shielding range, which is about a radius of 0-20 meters. But please note that this is a theoretical distance. The actual effect should be combined with the local signal strength, especially whether there is a signal base station nearby. If there is a signal base station within 200 meters, the shielding effect will be compromised. Walls will also weaken the shielding effect of mobile phone jammers. As the signal is stronger near the window, the shielding effect will be weakened. The standard classrooms in schools are generally about 75 square meters, and each classroom is equipped with a mobile phone jammer to achieve better results. It can be placed in the middle of the classroom for maximum shielding. Of course, this must be determined in conjunction with the power supply wiring. It is also common to place cell phone jammers at the podium.