How to calculate the interference range of mobile phone signal jammer
Many customers call and say that I need a mobile signal jammer that can interfere with a radius of 50 meters, a distance of 500 meters, and a radius of one kilometer, and that it should be shielded by the three networks of China Mobile, China Unicom, and China Telecom. Is there a problem with the customer's requirements? No problem, and the specific distance requirements are also given, but can it be completed? The answer is more difficult. Why is it difficult to achieve? Don't all the parameters of the mobile phone signal jammer have their own interference intervals, and it can be completed by placing several more jammers according to this distance? In fact, it is not true. The customer is not wrong, but they do not know that the interference planning of the mobile phone signal jammer is not a fixed value. How do they understand it?
The mobile phone signal jammer scans from the low end frequency of the channel to the high end at a certain speed during its operation. This scanning speed can form garbled code 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, preventing the mobile phone from establishing a connection with the base station within a certain plan, so as to shield the mobile phone signals.
To put it simply, the frequency sent by the mobile phone signal jammer interferes with the frequency of the mobile phone receiving the base station. The signal jammer and the base station are destined to be a competition. If the transmission power of the mobile phone signal jammer is less than the channel power transmitted from the base station to the mobile phone in the environment at that time, the jammer cannot be shielded. Only when the power of the signal jammer is greater than the power transmitted from the base station to the mobile phone can it be effectively shielded. Therefore, any mobile phone signal jammer used in different signal environments will show different shielding distances, and China Mobile, China Unicom and China Telecom will all be different. Because the density, orientation and power of the base stations built by the three operators cannot be the same.
That is to say, how many meters the mobile phone signal jammer can shield is not only related to its transmission power, It is also related to the distance between the base stations in the 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, which will be directly blocked if it is made of metal materials. If it is a reinforced concrete solid wall, the attenuation will be less than 10 times after penetration. If it is made of wood or glass materials, the attenuation will be less after penetration.
So the next time a customer says how many meters away they want to shield, they must ask about the distance between the base stations in the environment, and whether they need to go through the wall for indoor or outdoor use. Only by understanding these, can we better choose the appropriate mobile signal jammer for customers.
Floor 3 / 4, building 37, Liandong U Valley International Enterprise port, 1001 Fuying Road, Jiangning District, Nanjing, Jiangsu Province, China
