The old full-band signal jammer may not be able to shield 5G signals?
"This is not surprising." Communication experts explained that 5G is a new network standard introduced in recent years, using some new radio frequency bands, and many old full-band jammers do not support shielding 5G signals.
According to the 5G frequency band division, China Telecom and China Unicom's 5G mainly use 100MHz spectrum resources in the 3.5GHz frequency band, while China Mobile mainly uses 160MHz in the 2.6GHz frequency band and 100MHz spectrum resources in the 4.9GHz frequency band.
The working principle of the full-band signal shielding instrument is to use the higher power of the full-band frequency jammer and release stronger signals to suppress the normal interference signal in the corresponding mobile network frequency band, so as to achieve the purpose of shielding.
"The first possibility is that the 5G signal may not be within the working range of the full-band signal shielding instrument used on site; the second possibility is that the 5G signal itself has a relatively strong anti-interference ability, and the full-band jammer failed to suppress it interference," said the expert.
At present, communication technology is constantly upgrading, and the 5G signal system is also different from the original 4G system. It is also possible that the old model full-band signal shielding device cannot completely interfere with the 5G signal.
It is not difficult to make up for this loophole. It is necessary to confirm in advance what types of signals are near the examination room, and then deploy new models of full-band jammers in a targeted manner. 【topsignaljammer】full-band signal jammer, upgraded to 5G on the original technology, can block 2G/3G/4G/5G/WiFi/Bluetooth/invisible headset/walkie-talkie/wireless data transmission and other signals. The college entrance examination center in Shilin County, Yunnan Province adopts the full-band signal jammer SMa-818Q produced by [topsignaljammer], which completely achieves full-standard interference without leaving any loopholes.
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