Free Shipping on all orders over $50

blocker promotion 2024 christmas blocker promotion 2024 christmas

Block Numbers On Your Cell Phone Sprint Prevents Prisoners From Communicating With The Outside World

Perfectjammer 2022/05/26

Mobile phone signal jammers are one of the indispensable equipment for examination rooms, prisons, gas stations and other places. It can prevent mobile phones within a certain range from receiving signals. During the examination, in order to create a level playing field for candidates, the state stipulates that Block Numbers On Your Cell Phone Sprint should be used during important examinations such as the college entrance examination, postgraduate examination, and English CET 4 and 6. In order to prevent prisoners from communicating with the outside world, the prison will also install cell phone jammer to cut off communication with the outside world. The interference power of the mobile phone signal jammer is fixed, and the shielding radius of the unobstructed space is determined by the path attenuation and the signal level of the receiving base station. In order to realize the interference of the mobile phone signal jammer to the mobile network, it must be ensured that the signal field emitted by the mobile phone jammer is stronger than the field strength of the mobile signal in the interference area. The closer the interference location is to the base station, the stronger the field strength and the smaller the effective interference area. Conversely, the farther the interference location is from the base station, the weaker the field strength and the larger the effective interference area.

The power of the mobile phone signal jammer itself. Now there are many machines on the market that are said to be 5W, but the actual power is less than 1W. So, it must be the actual power. For low-power machines within 1W, the shielding distance is about 1-10 meters, and the shielding range is 10-30 square meters. Remember, such a machine cannot pass through walls. The density of base stations near you. Now many customers buy back the phone, 2G and 3G calls can be blocked, but 4G cannot be blocked. What is the reason? It is because there is a base station near you. Generally speaking, there is a base station within 100 meters. If you buy a low-power machine, it is basically useless, because the signal strength of the base station is too strong. It is recommended to buy a Block Numbers On Your Cell Phone Sprint with a medium power, with a ratio of more than 2W per channel. There is a customer who has a mobile base station on the roof, and it is said that the jammer has no effect. No one can solve this. Unless you buy a super powerful machine.