In the construction of some important exam projects, we will definitely try to install some signal shielding and interference equipment. However, in the actual use process, it can be found that sometimes the interference effect is not ideal after the Mobile phone signal jammer is turned on for work. If the factors of poor selection and working performance of the interference device itself are excluded, then how the interference device is installed and how to select the installation position of the interference device can reduce the effect of the interference device.

Mobile phone signal jammers are generally installed according to the original plan design drawings. The most common installation locations of jamming devices are: the two sides of the front and rear blackboard or the top of the middle of the blackboard, the top corner of the front and rear walls of the examination room, the middle area of the walls on both sides of the classroom, the middle beam of the classroom, and so on. It is not recommended to directly place interference devices on the podium or hide them inside the podium for convenience and convenience. In this way, equipment working in a closed environment will not be conducive to the heat dissipation of the Mobile phone signal jammer. If the outside is made of metal, it will be even more detrimental to signal transmission, thus directly affecting the interference effect. It can be concluded from all possible installation positions that if the Mobile phone signal jammer is an omnidirectional antenna, it can be installed in the middle of the classroom to facilitate and comprehensively interfere with the communication signals in the whole classroom to ensure that there is no dead space. Ensure that the interference device is not obstructed by metal objects during use, ensuring maximum interference effect.