Mobile phone jammer can not only realize mobile phone signal interference, but also add interference modules of different frequencies to interfere with wireless signals of other frequency bands. The radio signal can realize different functions according to its frequency. It is used in different places. The commonly used radio signals include GPS signal, interphone signal, WiFi signal, mobile phone signal, etc. The signal frequency that the mobile phone can use ranges from 700m to 6000m, including 2G to 5g signals, WiFi signals, GPS signals, etc. according to the signal frequency, it can be divided into various uses, and the functions achieved are also different.

The interference range of the mobile phone signal jammer for different frequencies is also different. In the same test environment, the mobile phone signal strength of each frequency band is also very different. According to different operators, the mobile phone can receive mobile phone signals of multiple frequency bands at the same time. At this time, in order to ensure that the mobile phone can use the mobile phone to make calls and send and receive text messages at a minimum, so as to keep the mobile phone unblocked in case of emergency. In some places where the mobile phone signal jammer is used, such as close to the base station, or indoor signal amplifiers are installed in the building, the mobile phone signal strength of some frequency bands must be relatively strong. If the jamming effect of the jammer is to be guaranteed in such places, it is necessary to test the frequency band of the strongest mobile phone signal on site, and then adjust the interference module of the mobile phone jammer or the signal source providing the mobile phone signal, Thus, the transmitting power of the mobile phone signal jammer can be improved, or the signal strength of the signal source can be reduced, so that the mobile phone frequency band with the strongest field signal can be covered. In this case, the interference range of the jammer can be guaranteed.