Many customers call and say that I need a cell phone signal jammer that can shield a radius of 50 meters, an interval of 500 meters, and a radius of one kilometer. It also needs to be shielded by China Mobile, China Unicom and China Telecom. Is there a problem with the customer's request? No problem, and a specific interval requirement is given, but can it be completed? The answer is that it is difficult to achieve. Why is it more difficult to achieve? Isn’t the signal jammer’s parameters marked with its own shielding interval, can it be done if you put a few more sets according to this interval? In fact, it 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.
The signal jammer scans from the low end of the channel to the high end at a certain speed during the operation process. This scanning speed can constitute garbled interference in the message signal received by the mobile phone, causing the mobile phone to fail to detect the normal microwave signal data announced from the base station. , Make the mobile phone unable to establish the connection with the base station within a certain plan to achieve the purpose of shielding the mobile phone signal.
To put it simply, the frequency announced by the mobile phone signal jammer disturbs the mobile phone to receive the frequency of the base station. The jammer and the base station are destined to be a competition connection. If the transmission power of the signal jammer is less than the channel that the base station transmits to the mobile phone in the environment at that time Power, then the jammer will not be able to shield, only the power of the signal jammer is greater than the power delivered by the base station to the mobile phone in order to effectively shield. Therefore, any shielding device used in different signal environments will show different shielding intervals, and mobile, China Unicom, and telecommunications will be different. Because the base station density, base station location and base station power built by these three operators can not be the same of.
In other words, how many meters can be shielded by a mobile phone signal jammer is not only related to its own transmission power, but also to the distance between the base stations in the use environment (base stations are not limited to large-scale transmission towers built on the ground, but also buildings. The signal expansion antenna on the top and the signal expansion and spreading made in some buildings), another important factor is obstacles, if it is a metal material, it will be directly blocked; if it is a solid wall of reinforced concrete, it will be less attenuated after penetration 10 times; if it is wood board or glass material, the attenuation after penetration is relatively small.
So next time there are customers who say how many meters apart they need to be shielded, they must ask about the distance between the base stations in the environment, and whether they are used indoors or outdoors, whether they need to penetrate walls, etc. Customers can contact us to learn about the use of signal jammers. Only by understanding these can they better choose the appropriate signal jammer for customers.