The function of network jammer is to shield signals, which is used in many occasions. The most common use occasion we are exposed to is the examination room. When we use the network jammer, you will find that within a space, as long as you turn on the network jammer, no one's mobile phone can search for signals. That is, if you use the network jammer, you can't use your mobile phone. Do you know what the shielding effect of the network jammer is related to? Let's get to know!

The power of the network jammer is certain. In the obstacle free space, the shielding range is determined by the path attenuation of the received signal and the signal level of the receiving base station. In order to realize the interference of the network jammer on the mobile network, it is necessary to ensure that the signal field strength sent by the network jammer is greater than the field strength of the mobile signal in the interference area. The closer the interference location is to the base station, the stronger the field strength is, and the worse the effective shielding effect is. On the contrary, the farther the interference location is from the base station, the weaker the field strength is, and the better the shielding effect of the network jammer is.

It can be seen that within a certain transmission power range, the shielding effect depends on the field strength in the interference area. No matter how large the power of the network jammer is, as long as the transmission power is a fixed value, the interference signal strength will gradually decrease with the increase of distance, thus losing the shielding ability. Therefore, shielding effect of the network jammer is related to output power and signal strength of the base station.