The signal jammer scans from the low end frequency of the forward channel to the high end at a certain speed during operation. This scanning speed can cause garbled interference in the message signal received by the mobile communication, and the mobile communication cannot detect the normal data sent from the base station, so that the mobile communication cannot establish a connection with the base station. Mobile communication manifests itself as a search network, no signal, no service system, etc.
The effective shielding range of the jammer mainly depends on the following points:
1. The power of the machine itself. Nowadays, there are many 5W machines on the market, but the actual power is less than 1W. Therefore, it must be the actual power. For low-power devices within 1W, the shielding distance is about 1-10 meters, and the shielding range is 10-30 square meters. Remember, such a machine cannot go through walls.
2. The density of base stations near you. Now many customers buy back their phones, 2G3G calls can be blocked, but 4G cannot be blocked. Why? It's because there are base stations near you. Generally speaking, if there is a base station within 100 meters, if you buy a low-power machine, it basically does not work because the signal strength of the base station is too strong. It is recommended to buy a shielding device with a little power, with a ratio of more than 2W per channel. There was a customer who had a mobile base station on the top of the building and said that the jammer had no effect. No one can solve this. Unless you buy a super-powered machine.
3. Field wall environment. What is the field wall environment? Is the place where you install the shield is a concrete wall or a glass partition. A general shielding device will have no effect through a wall. Like many customers, come to consult us. Children play games alone in the room. Whether there is a partition wall that can be screened, the price is low. In this case, it is difficult to achieve. Generally, the price of the shielding instrument through the wall is very high, at least 700 or more.
In summary, the shielding range of the mobile phone signal jammer is not solved by a single factor. Before buying in large quantities, the best way is to test the signal strength of your installation environment with a field wall meter. The other is to buy several machines with different powers and test them to see how effective they are. Then decide which machine to choose.
