A standard mobile network jammer requires simultaneous and effective interference across all 2G, 3G, 4G, and 5G frequency bands. Therefore, no less than 10 mobile network jammer modules are generally installed inside it, with each shielding module corresponding to a specific mobile network jammer band. In a conventional mobile network jammer, which frequency band modules can be interchanged and adjusted universally?

We should first have a rough understanding of how the current mobile frequency bands are divided and what frequency values are occupied by each mobile frequency band.

According to the internationally recognized mobile communication frequency band classification standards and our actual domestic implementation standards, as of the end of 2022, the frequency range occupied by our known mobile communication frequencies is between 700MHz and 4960MHz. Among them, 4800MHz-4960MHz is classified as the 5G frequency band of China Mobile and China Broadcasting and Television. However, this frequency band belongs to the ultra-high frequency mobile network jammer band, and currently there is no preparation for large-scale promotion and deployment in China. It is only deployed and applied as a communication network in specific locations. So conventional mobile network jammer generally do not need to consider configuring the 4800MHz mobile phone interference module for the time being. After excluding the 4800MHz frequency band, the communication frequency band of mobile phones is actually mainly distributed between 700MHz and 3600MHz.

Let's analyze in detail the characteristics of frequency band division between 700MHz and 3600MHz. In this large bandwidth range close to 3000MHz, the mobile frequency band is not fully occupied, but is mainly distributed in several intervals. These sections are: 700MHz, 800MHz, 900MHz, 1800MHz, 1900MHz, 2000MHz, 2100MHz, 2300MHz, 2500MHz, 3400MHz, and so on. As a manufacturer of mobile phone signal jammers, when designing and developing shielding modules for various mobile phone frequency bands mentioned above, based on the matching parameters of electronic components such as power amplifiers and signal sources, some frequency bands will be merged or shared with the same set of devices. Among these frequency bands, the most common frequency bands that share a set of devices are 800MHz/900MHz, 1800MHz/1900MHz, 2000MHz/2100MHz, 2300MHz/2400MHz 2500MHz/2600MHz, 3400MHz/3500MHz, etc.

From the frequency band parameters listed above, it can be concluded that although there may be more than 10 different interference modules in amobile network jammer, there may actually be at least 4 to 6 module groups with the same style. The 2 modules in each group can be interchangeably adjusted and covered, but they will be adjusted to correspond to their respective mobile network jammery bands by adjusting the frequency offset and bandwidth during factory debugging.