There are many factors that affect the interference effect of the wireless signal jammer, such as the layout of the on-site building, the strength of the on-site mobile phone signal, the distance between the use site and the base station, whether there are buildings, trees and other obstructions between the base station and the site, and the performance parameters of the jammer equipment. These factors will affect the interference effect of the wireless signal jammer.

1. The transmitting power of each different frequency band of the wireless signal jammer itself. Theoretically, the larger the transmitting power, the larger the interference range. And it is related to the frequency band of the signal frequency transmitted by the frequency band. If the transmission power is the same, the narrower the bandwidth, the larger the interference range.

2. The signal strength of the mobile phone on the site depends on whether there is a base station of the operator transmitting mobile phone signals around the site, commonly known as the antenna tower. The distance from the signal tower to the site determines the strength of the mobile phone signal on the site. Of course, the signal source also includes the indoor signal distribution system, commonly known as the mobile phone signal amplification equipment. The distance from the signal source to the scene is the most critical factor that determines the interference range of the wireless signal jammer. Because the distance from the signal source to the site cannot be changed, the possibility of artificial interference is not great, and the signal strength transmitted by the signal source cannot be changed basically.

3. The interference range of the wireless signal jammer is also related to the space layout and wall material of the use site. If the space environment of the site is relatively transparent, the interference range of the wireless signal jammer is much better than that of some environments with multiple compartments. Moreover, the interference range of the jammer is also related to the wall material on site. The interference range and wall material of the jammer are basically that glass wall, wood wall and gypsum board wall are larger than brick wall and concrete wall. If the wall is a sandwich panel wall with metal on both sides and foam in the middle, the interference signal of the jammer is basically impenetrable, so the jammer cannot interfere with the mobile phone signal.