The development and progress of science and technology in this era has brought people a lot of convenient life. Now the 5G era has arrived, which has once again accelerated people's lives and production. The rapid development of the Internet has also improved our communication experience. However, with the development of Corgi, many problems have also emerged, such as those who use high-tech products to cheat in the exam, and the old digital cell phone signal blocker cannot block the latest 5G signal. Is the old digital mobile phone signal blocker no longer useful?
1. From the perspective of professional technology, the digital mobile phone signal blocker is actually just a small branch in the wireless network information content shielding system. Its essence is electronic countermeasures, or it is called same-screen intrusion, that is, using the device to transmit high-frequency signals through the wireless antenna, so that the mobile phone will generate errors after receiving the downlink data signal and cannot be recognized and accessed. The mobile phone shows that there is no network status, so as to meet the needs of signal shielding.
2. For digital mobile phone signal blockers, it is well known that downlink signals must be interfered with, but mobile 4G and 5G do not distinguish between uplink and downlink. Because a series of factors such as cost, price, and manufacturing are limited, it is difficult to only interfere with the downlink signal. Therefore, some illegal personnel adjust the power of the signal jammer for sale in order to improve the shielding effect. They do not want to make precise frequency scale adjustments, resulting in some interference to the uplink signal. This can indeed further increase the interference range and have a self-defeating effect, but it sacrifices everyone's rights.
3. The signal is different in the same signal. There may be great changes at different times. According to actual experience, it can reach about 10dBm, and the conversion rate is 10 times. It is not difficult to see that the digital mobile phone signal jammer is actually a project with relatively high capacity requirements, and it is not a simple purchase of digital mobile phone signal jammers.
4. In special venues, when signal shielding is required under large-scale chaotic conditions, the gain antenna scale shielding should be combined with a small scale through the indoor antenna to fill the boosting method for shielding. The focus of the antenna and the output power of the digital mobile phone signal jammer require professional personnel to adjust the equipment. In the short term, the signal shielding in the school can adopt high-quality low-power full-band jammers or temporary wiring antennas.