The rapid development of mobile communication has brought great convenience to people's work and life, but the side effects caused by mobile phones have become increasingly apparent. The insecure factors of mobile phones are mainly reflected in the fact that in important secret-related places such as agencies, factories, enterprises and institutions, intentionally or unintentionally dialing a mobile phone or forgetting to turn it off may cause a leak at any time. In some important confidential occasions or meetings, the use of mobile phones is prohibited. At this time, we will use cell phone signal jammers, which are new green information security products that are newly developed using modern high-tech. The principle is similar to that of the communication signal source. A fan-shaped shielded space is customized according to the power of the signal jammer, and the normal wireless connection between the signal source and the mobile phone is cut off, so that the mobile phone in this space cannot be received or called. To achieve the purpose of compulsory banning of mobile phones, in order to ensure the safety and confidentiality of the scene. The appearance of the equipment is simple and elegant, solemn and beautiful; efficient and intelligent cooling and heat dissipation system, stable performance, safe and reliable; built-in professional directional antenna, no need to connect an external antenna, it can work directly from the mains power; good electromagnetic compatibility, integrated design and installation Convenient and simple to use and manage.
How to use: 1. Open the package and check whether the components are in good condition; 2. Connect the power adapter and power cord to the port on the right side of the fuselage; 3. Insert the plug into the 220V mains socket; 4. Place the shield on On a plane above the ground 180cm (or hanging on a vertical wall), ensure that the front panel is tilted forward 3~5 degrees; 5. Press the switch on the right side of the fuselage, and the jammer can start to work automatically.
Key technical solutions and implementation methods of important functions:
(1) Broadband and high power output: to solve the problem of wideband power gain increase, and power stability control after gain increase, waveform in-band smoothness and out-of-band suppression, control of out-of-band spurious indicators, and broadband output standing wave ratio Indicators (some indicators are repeatedly adjusted before the R&D plan is finalized, and omitted during normal production and after product quality is stable).
(2) Shielding between multiple systems: In the small space of the shielding instrument machine, there are 6 systems of CDMA, GSM, DCS/PHS, 3G1.3G, 4G1.4G, transmitting high-power, wide-band signals at the same time , To solve the intermodulation index generated between these multiple signals (repeated adjustment during research and development, omitted during production). B. Slow-start circuit technology: The use of slow-start circuit can avoid the ignition phenomenon caused by mechanical switches, and the integration is high and stable. C. Long-term uninterrupted work: The equipment adopts high-quality components, metal casing, and good heat dissipation performance. It can work uninterrupted for 7×24 hours. Long-term work will not cause damage to the performance of the equipment.