Signal interference devices have been around for some time, and the effectiveness of the devices varies under different circumstances. Therefore, it is necessary to adjust and test different models of devices according to different environments in order to fully utilize their functions and leverage their advantages.

Under the same conditions, the harsher the working environment of the frequency jammer, the stricter the requirements for it. It is possible to detect the on-site environment and test the local signal strength to determine which signals are included and which signals need to be shielded, in order to select shielding equipment with stronger power. After all, the effectiveness of frequency jammers varies depending on the actual environment and configuration. On the contrary, if the effect of equipment in the same environment is not significant, it is necessary to conduct maintenance or increase the frequency band setting. Reasonably arrange according to the principles of communication signals, on-site environment, and the influence of nearby base stations, in order to reduce the factors that affect the shielding range of frequency interference devices, and significantly improve the shielding effect of this interference device.