What is the blocking range of an indoor cell phone signal jammer? |...

What is the blocking range of an indoor cell phone signal jammer?

Posted 2024-04-09 09:10:20

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Many customers have called and said that I need a cell phone signal jammer that can block signals with a radius of 50 meters, an interval of 500 meters, and a radius of one kilometer, and it needs to be blocked by China Mobile, China Unicom and China Telecom.

Is there a problem with the customer's request? No problem, and specific interval requirements are given, but can it be completed? The answer is that it is relatively difficult to achieve. Why is it so difficult to achieve? Don’t signal jammers have their own shielding intervals marked in their parameters? Can’t it be completed by placing a few more units according to this interval? In fact, this is not the case. The customer is not wrong, but they don’t know the signal jammer. The shielding plan is not a fixed value. How to understand it? Texin Electronics will give you an explanation.

During operation, the signal jammer scans from the low-end frequency to the high-end frequency of the channel at a certain speed. This scanning speed can cause garbled interference in the message signals received by the mobile phone, causing the mobile phone to be unable to detect the normal microwave signal data sent from the base station. , making it impossible for mobile phones to establish connections with base stations within a certain range, achieving the purpose of blocking mobile phone signals.

Generally speaking, the frequency emitted by the mobile phone signal jammer interferes with the frequency of the mobile phone receiving the base station. There is bound to be a competitive relationship between the jammer and the base station. If the transmit power of the signal jammer is smaller than the channel sent by the base station to the mobile phone in the environment at that time, If the power of the signal jammer is greater than the power delivered by the base station to the mobile phone, effective shielding can be achieved.

Therefore, any jammer used in different signal environments will show different shielding intervals, and China Mobile, China Unicom, and China Telecom will all have different shielding intervals, because the base station density, base station orientation, and base station power built by these three operators cannot be the same. of.

In other words, how many meters a mobile phone signal jammer can shield is not only related to its own transmission power, but also to the distance of the base stations in the use environment (base stations are not limited to large transmission towers built on the ground, but also buildings The signal amplification antenna on the top and the signal amplification distribution in some buildings), another important factor is the obstacle. If it is a metal material, it will directly block it; if it is a reinforced concrete solid wall, it will attenuate less after penetration. 10 times; if it is a wooden board or glass material, the attenuation after penetration is relatively small.

So next time a customer asks how many meters the shielding distance needs to be, be sure to ask how far apart the base stations are in the environment, and whether they are used indoors or outdoors, whether they need to pass through walls, etc. Customers can contact our topsignaljammer to learn how to use signal jammers. Only by understanding these can we better choose the appropriate signal jammer for customers.