Why is the shielding range of the signal jammer not fixed?
When buying a signal jammer, the shielding range of the signal jammer is a point that many customers want to know. Is the shielding range of the signal jammer fixed? Naturally not.
The signal jammer scans the low-end frequency to the high-end frequency of the channel at the same speed during the operation. 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 announced from the base station. In the plan, the mobile phone cannot establish a connection with the base station, so as to achieve the purpose of shielding the mobile phone signal.
Simply speaking, the frequency announced by the mobile phone signal jammer disturbs the frequency of the mobile phone to receive the base station. The jammer and the base station are destined to be a competitive connection. If the transmission power of the signal jammer is less than the channel transmitted 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, the shielding device will not be able to shield it effectively. Therefore, any shielding device will show different shielding intervals when used in different signal environments, and China Mobile, China Unicom and China Telecom will be different, because the base station density, base station orientation and base station power built by these three operators cannot be the same. of.
That is to say, how many meters a mobile phone signal jammer can shield 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 only limited to large transmission towers built on the ground, but also buildings). The signal expansion antenna on the top and the signal expansion and distribution in some buildings), another important factor is the obstacle, if it is a metal material, it will be blocked directly; if it is a solid wall of reinforced concrete, it will be less attenuated after penetration. 10 times; if it is a wooden board or a glass material, the attenuation after penetration is relatively small.
So next time a customer says how many meters should be shielded, you should ask the distance between the base stations in the environment, and whether it is used indoors or outdoors, whether it is necessary to pass through walls, etc. Customers can contact us Guanyu Electronics to understand the use of signal jammers. Only by understanding these can we better choose suitable signal jammers for customers.