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Is the 4.9G frequency band in the 5G jammer necessary?

Is the 4.9G frequency band in the 5G jammer necessary?

  • 2022-07-15


Manufacturers of 5G jammers all know something: One-to-one interference module correspondence for various 2G, 3G, 4G, 5G and other standard frequency bands running on mobile phones can truly effectively achieve full-band interference to mobile phone signals.

According to the public information released by the Ministry of Industry and Information Technology, one of the working frequency bands of 5G mobile phones is the 4.9G frequency band, and the frequency range is 4800-4960MHz. Then the question arises: Is the 4.9G frequency band in the 5G jammer a necessary frequency band?

The 4.9G frequency band is also called the 4.8G frequency band in the industry. The frequency band division starts from 4800MHz and ends at 4960MHz. In this frequency range, it is subdivided into two segments: 4800-4900MHz belongs to China Mobile, 4900-4960 belong to China Radio and Television. The entire 4.9G frequency band adopts the TDD time division duplex mode, with a total bandwidth of 160MHz. At present, many 5G jammer manufacturers use the 4.9G band as a standard configuration module and install it in the jamming equipment. Is the 4.9G frequency band necessary?

The real reason is that although the country has clearly divided the 4.9G frequency band, it can be said that the 4.9G frequency band has hardly been put into practical application in the actual operation process of operators and the construction of mobile phone base stations. According to the information provided by some staff of China Mobile and China Radio and Television, the 4.9G frequency band is mainly used for the construction of private communication networks in very few places. This also explains why in most situations in daily life, whether indoors or outdoors, we have never seen communication signals in the 4.9G frequency band through the spectrum analyzer.

Since even operators have hardly officially popularized the use of the 4.9G frequency band, the 5G jammer will follow up with the installation of the 4.9G frequency band interference module. Although it is definitely not a bad thing, from the current actual use environment, 5G jammers are analyzed. On the issue of whether the 4.9G interference module needs to be installed, it is indeed not a necessary condition.

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