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How to calculate the interference range of mobile phone jammer

How to calculate the interference range of mobile phone jammer

  • 2022-06-30
Many customers have called to say that I need a mobile phone jammer that can interfere with a radius of 50 meters, a distance of 500 meters and a radius of one kilometer, and that the three networks of China Mobile, China Unicom and Telecom should interfere. Are there any problems with the customer's requirements? No problem. It also gives specific distance requirements, but can it be completed? The answer is more difficult to achieve. Why is it difficult to achieve? Don't all jammers have their own jamming intervals in their parameters? Can it be completed by placing several more jammers at this distance? In fact, it's not. The customer is not wrong. They just don't know that the interference plan of the mobile jammer is not a fixed value. How do you know?

During the working process, the mobile phone jammer scans from the low frequency of the channel to the high frequency at a certain speed. This scanning speed can constitute garbled interference in the received message signal of the mobile phone, so that the mobile phone can not detect the normal microwave signal data sent from the base station, so that the mobile phone can not establish a connection with the base station within a certain plan, so as to achieve the purpose of interfering with the mobile phone signal.

Simply put, the frequency emitted by the mobile phone jammer interferes with the frequency of the mobile phone receiving the base station. The jammer and the base station are destined to be a competitive contact. If the transmission power of the mobile phone jammer is less than the channel power transmitted by the base station to the mobile phone in the current environment, the mobile phone jammer will not be able to interfere. Only when the power of the jammer is greater than the power transmitted by the base station to the mobile phone, can effective shielding be achieved. Therefore, any jammer used in different signal environments will show different interference distances, and China Mobile, China Unicom and Telecom will be different. Because the base station density, base station orientation and base station power built by the three operators cannot be the same.

That is to say, how many meters a mobile phone jammer can shield is not only related to its own transmission power, It is also connected with the distance between the base stations in the operating environment (the base station is not only limited to the large transmission tower built on the ground, but also the signal amplification antenna on the roof and the signal amplifier made in some buildings. Another important factor is the obstacle. If it is a metal material, it will be blocked directly; if it is a reinforced concrete solid wall, it will attenuate 10 times less after penetration; if it is a wood or glass material, it will attenuate less after penetration.

So the next time a customer asks how many meters the interference distance is, they must ask the distance between the base stations in the environment, and then whether they are used indoors or outdoors, whether they need to go through the wall, and so on. Only by understanding these, can we better select the appropriate mobile phone jammer for customers.

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