The development of modern communication technology by leaps and bounds requires technological security companies to keep pace with the times and continuously develop and strengthen their own strength to meet multiple challenges. The widespread popularity of mobile phones has brought convenience to people, and at the same time has brought up new issues for communication security and confidentiality. Eavesdropping, leaks, cheating in examination rooms, medical accidents, and gas station explosions have emerged one after another, accelerating the promotion of Is It Illegal To Buy A Cell Phone Jammer And use. It is mainly used in examination rooms, prisons, gas stations, mobile phone bomb prevention, oil depots, liquefied gas stations, detention centers, interrogation rooms, courts, labor reform teams, conference rooms, theaters, churches, libraries, school dormitories, special security and confidential occasions (Confidential offices, negotiation rooms, mobile vehicles, mobile politicians and business dignitaries guarding) scenes, etc., and the status of mobile phone signal jammers in social life is becoming more and more important. In the cellular mobile communication system, the coverage area of the system is divided into several cellular areas. The base station of each cellular area is equipped with a low-Power transmitter, and the transmitted signal is only received by the mobile phone within the limited range of the cellular. The transmitted signal is interfered by a certain intensity of electromagnetic waves of the same frequency, so the communication cannot be carried out normally. The mobile phone and the base station must first establish a normal dialogue, cell phone jammer In order to realize the call between the mobile phone and the mobile phone or other phones, that is, normal communication.
Dialogue must have questions and answers. If we can cut off what the speaker is saying or prevent the listener from hearing what the speaker is saying, Is It Illegal To Buy A Cell Phone Jammer can block their normal communication. It is not advisable to cut off what the speaker says is to interfere with the uplink signal of the base station. Therefore, we can only prevent the listener from hearing what the speaker is saying, and our goal can be achieved. That is, it interferes with the downlink signal of the base station. The strength of the downlink signal of the base station is for example: the strength of the strongest one of a group of downlink signals transmitted by the base station is -65 dBm (taking GSM as an example). It can be measured by a mobile phone or spectrum analyzer. And we can transmit interference signals at the same time on the frequency between 930 and 960. In this area, the mobile phone in this frequency band cannot hear any signal sent by the base station to the mobile phone, and the mobile phone is stupid, which makes it impossible to achieve effective communication. , It has achieved our goal.
