How to Build a GPS Jammer at Your Home
Here’s a step by step guide on how to build your own GPS jammer. Below are the main steps we are going to introduce in
27 November 2023
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Mobile phone signal blockers are widely used to block signals from 2G, 3G, 4G, and 5G networks. These blockers typically contain at least 10 shielding modules. Many manufacturers have specifically mentioned the inclusion of shielding modules for the 4800-4900MHz frequency band. However, the question arises as to whether it is necessary to shield this frequency band in the current communication network environment.
Understanding the 4800-4900MHz Frequency Band:
The 4800MHz frequency band is a commonly used term that actually refers to the range of 4800-5000MHz. It is primarily used for the N79 frequency band in 5G smartphones. In mainland China, the 4800-4900MHz band is allocated to China Mobile 5G, while the 4900-4960MHz band is allocated to China Broadcasting. While mobile phone signal blockers need to shield all 5G signals, it is important to note that China Mobile and China Broadcasting have not deployed 5G base stations in the 4800MHz frequency band nationwide. China Mobile, in particular, only uses the 4800MHz band as a small-scale local dedicated network in a few regions and occasions.
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The Redundancy of the 4800MHz Shielding Module:
In most provinces, cities, and regions in China, 5G smartphones cannot receive signals from base stations in the 4800MHz frequency band. This leads to an awkward situation where the inclusion of the 4800MHz shielding module in mobile phone signal blockers becomes somewhat redundant. Whether or not this module is present does not affect the overall shielding effectiveness of the phone. Therefore, it can be concluded that the 4800MHz shielding module in mobile phone signal blockers is unnecessary in the current communication network environment.
Future Considerations:
While the 4800MHz shielding module can be omitted in the short term, even within the next two to three years, it may still be necessary to install it if the frequency band is fully opened and popularized by network operators in the future.
Conclusion:
In conclusion, the inclusion of the 4800MHz shielding module in mobile phone signal blockers is currently unnecessary in most regions of China where 5G smartphones cannot receive signals from the 4800MHz frequency band. However, it is important to consider future developments and the potential need for this module if the frequency band is widely deployed by network operators.
