Many customers called and said that I needed a wifi frequency jammer with a radius of 50 meters, a distance of 500 meters, and a radius of one kilometer, and the three networks of China Mobile, China Unicom and China Telecom were shielded. Is there a problem with the client's request? No problem, and a specific distance requirement is given, but can it be done? The answer is more difficult to achieve. Why is it more difficult to achieve? Don't the parameters of the wireless wifi bluetooth jammer all mark their own jamming interval, can't it be done by placing a few more units according to this distance? In fact, the customer is not wrong, but they do not know that the interference planning of the wireless wifi signal jammer is not a fixed value. How to understand it?
The wireless signal jammer scans from the low-end frequency of the channel to the high-end frequency at a certain speed during the working process. This scanning speed can cause garbled interference in the received message signal of the mobile phone, so that the mobile phone cannot detect the normal microwave signal data sent from the base station. In a certain plan, the mobile phone cannot be connected with the base station, so as to achieve the purpose of shielding the mobile phone signal.
Simply put, the frequency emitted by the wifi jammer device interferes with the frequency of the mobile phone to receive the base station. The wifi jammer and the base station are destined to be a competitive connection. If the channel power is high, then the wireless jammer cannot be shielded. Only when the power of the wireless frequency jammer is greater than the power delivered by the base station to the mobile phone can it be effectively shielded. Therefore, any wireless jammer will show different shielding distances when used in different signal environments, and it will be different for China Mobile, China Unicom and China Telecom. Because the base station density, base station orientation and base station power built by these three operators are unlikely to be the same identical.
That is to say, how many meters the wireless frequency jammer can shield is not only related to its own transmission power, but also related to the distance of the base station in the use environment (the base station is not only limited to the large transmission tower built on the ground, but also the roof of the building. Another important factor is the signal expansion antenna on the upper and the signal amplifiers made in some buildings. Another important factor is the obstacle. If it is a metal material, it will directly block it; if it is a solid wall of reinforced concrete, it will attenuate at least 10 times after penetration; If it is a wooden board or a glass material, the attenuation after penetration is relatively small.
So next time a customer asks how many meters to shield the distance, you must ask the distance of the base station in the environment, and then whether it is used indoors or outdoors, whether it needs to pass through the wall, etc. Only by understanding these, you can better choose the appropriate wireless jammer.
