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source:Industry News release time:2021-08-09 Article author:sznbone Popular:Prison Jamming system
A cell phone signal jammer is a device that can shield cell phone signals. Generally, there are more signal jammers in the examination room, and some agencies and security offices also use signal jammers to prevent unscrupulous people from using mobile phones to take pictures and record some secrets.
The working principle of the signal jammer is to scan from the low end frequency of the forward channel to the high end at a certain speed during the working process. The scanning speed can cause garbled interference in the message signal received by the mobile phone. The mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station and achieve the purpose of shielding the mobile phone signal. No service system and other phenomena.
Do you know which signals can be shielded by a signal jammer?
The mobile phone signal jammer can shield 2, 3, 4, 5G mobile phone signals, as well as 2.4G and 5.8G Internet signals. The frequency bands that the mobile phone signal jammer can shield are: CDMA::867-885 MHz.GSM:923 -964MHz, DCS/4G: 1803-1994MHz, 3G (Unicom/Telecom): 2109-2175 MHz, mobile 3G: 2008-2029MHz, WIFI: 2395-2487 MHz, 4G1: 2298-2406 MHz, 4G2: 2547-2650 MHz
After the mobile phone signal jammer, the mobile phone may display the signal, but it can no longer make and receive calls and surf the Internet. It can ensure the confidentiality of the examination room, conference room and other places. After the signal jammer is turned off, it can be used normally. The mobile phone signal jammer will not Interfere with other electronic equipment.
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