Full-band jammers are often used in exam rooms to block wireless communications. They can interfere with a variety of signals, including mobile phone signals (2G, 3G, 4G, and 5G), wireless intercom signals, Bluetooth signals, and WiFi signals.
To understand how full-band jammers interfere with mobile phone signals, let’s first compare it to a radio. Radios are interfered with, causing channels to become chaotic and inaudible. This interference occurs because radios are interfered with, and similarly, mobile phones are interfered with by specific devices.
When we use our mobile phones, we connect to the base stations of communication operators. Different mobile phone standards use different frequencies to ensure that signals do not interfere with each other and achieve peaceful coexistence.
The basic principle of a full-band signal jammer is to transmit the same radio frequency signal as a mobile phone. Using the same frequency, the mobile phone cannot distinguish between regular base station signals and interference signals, resulting in “interference”. When the device works on the same frequency as the mobile phone, the base station will generate a lot of “noise” when trying to establish a connection with the mobile phone, causing the mobile phone signal to be unrecognizable.
By creating a spherical shielding space that is consistent with the transmission frequency band of the full-band cell phone signal jammer, a shielding magnetic field is established within a specified range, causing the mobile phone signal in that space to be lost. When the full-band 5G jammer is activated, it disables the phone’s ability to send and receive signals within a specified range, making it unable to make or receive calls, thereby forcibly disabling its functions.
It is worth noting that many people may not know the difference between Bluetooth, Wi-Fi, and mobile data, as they are all wireless communication technologies. But the main difference lies in the frequency bands in which they operate. In mobile communication technology, 2G mainly operates in the 900-1700MHz frequency band, 3G operates in the 1900-2100MHz frequency band, 4G operates in the 2300-2500MHz frequency band, and 5G operates in the 3400-3600MHz frequency band. Bluetooth and Wi-Fi operate at 2.4GHz.
Therefore, the 5G full-band jammer can accurately identify the communication frequency band, develop a jammer that works in the same frequency band, and effectively shield the mobile phone wireless signal.
