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Mobile jammer prevents confidential disclosure

Ungles Earl April 13, 2021 10:30

A cell phone jammer is a device that can shield cell phone signals. Generally, there are many signal jammers in the examination room, and some agencies and security offices also use mobile cell phone jammer to prevent unscrupulous people from using mobile phones to take pictures and record some secrets.

The working principle of the mobile phone 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 blocked by mobile jammers?

Mobile phone jammers can shield 2, 3, 4, and 5G mobile phone signals, as well as 2.4G and 5.8G Internet signals. The frequency bands that mobile phone jammers 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 jammer, the mobile phone may display the signal, but it can no longer make and receive calls and surf the Internet. This 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, and the mobile phone signal jammer will not interfere. Of other electronic equipment.