During major exams such as the annual college entrance examination and middle school entrance examination, communication operators and examination room management departments form a linkage mechanism to ensure exam fairness through precise network optimization. The operator's technical team has expanded the capacity of base stations within a 500 meter radius of the exam center in advance, focusing on optimizing the 4G/5G signal coverage in the parent gathering area to ensure smooth communication around the exam center. At the same time, the mobile signal jammer deployed inside the examination room and the external radio monitoring form a dual protection, constructing a three-dimensional examination security network.

The mobile signal jammer in the examination room adopts full frequency dynamic suppression technology, which forms an electromagnetic isolation zone in the examination room by emitting interference signals on the same frequency as the mobile communication frequency band. The system is based on deep analysis of communication protocols and can accurately cover a wide frequency range of 700MHz to 6GHz, especially optimizing power output for the 5G high-frequency band (2.6GHz/3.5GHz) to ensure synchronous upgrades with the latest frequency band planning of operators. Cooperate with the radio monitoring vehicle deployed outside the examination room to scan the 20MHz-6GHz ultra wide spectrum in real time, identify abnormal signal characteristics through AI algorithms, accurately locate and suppress non-standard frequency bands used by cheating devices.

In terms of technical implementation, the system adopts a modular architecture design, supporting full standard coverage of 2G/3G/4G/5G. The maximum output power of a single device is 200W, and the electromagnetic radiation intensity is strictly controlled below the GB 8702-2014 standard. After testing by authoritative institutions, the electromagnetic environment safety indicators in the examination room are better than those in daily living environments. Professional manufacturers such as Nanjing Baikang Electromechanical Technology Co., Ltd. can provide customized solutions based on the building structure of the examination site (such as lecture halls and standard examination rooms), optimize antenna layout through 3D electromagnetic simulation technology, and achieve perfect compatibility between shielding effect and building structure.

This technology combination has been validated as effective in the college entrance examination in multiple provinces. Actual tests have shown that the received signal strength of mobile phones in the examination room has decreased from -65dBm to below -95dBm, and the 5G network latency exceeds 3000ms, completely blocking real-time communication. With the evolution of 6G technology, intelligent shielding systems are integrating millimeter wave monitoring modules, which can achieve full coverage from Sub-6G to millimeter wave frequency bands in the future, continuously providing technical guarantees for exam fairness.

[Shengma]jammer| Nanjing Baikang Electromechanical Technology Co., Ltd. - www.bokangtech com-ljw