Working principle of signal jammer module

The working principle of signal jammer module is to form an interference signal by emitting radio waves with the same frequency band as the mobile phone communication, thereby blocking the normal communication of the mobile phone. Specifically, the signal jammer module (also known as a mobile phone signal jammer or blocker) will scan from the low-end frequency of the forward channel to the high-end frequency at a certain speed. This scanning speed forms garbled interference in the mobile phone receiving message signal, making it impossible for the mobile phone to detect the normal data sent from the base station, and thus unable to establish an effective connection with the base station. This will cause the mobile phone to have no signal, no service, and failed to search for the network.