In foreign countries, their mobile phone signal strength is good, but because many frequencies belong to 2G, 3G, 4G, the higher the transmission distance of high frequency is shorter, and the penetration rate is also low, and many signal blind spots will also be encountered. In China, mobile phone operators (China Mobile, China Unicom, China Telecom), their signal coverage has basically reached every corner of urban and rural areas. However, with the rapid population growth, land resources are becoming increasingly scarce, some newly built buildings are getting taller and taller, and the housing structure is becoming more and more complex. Houses are high-rise buildings, so they are generally reinforced concrete. The absorption of signals by such reinforced concrete walls is amazing. Its absorption of the signal is similar to Cell Phone Signal Jammer App , which directly interrupts the transmission of the signal. cell phone jammer
After testing, usually a layer of wood will attenuate the signal by 4db; a brick wall will attenuate the signal by 10db to 20db, and a reinforced concrete wall will attenuate the signal by 20db to 35db. Therefore, a series of problems such as no mobile phone signal, unstable signal and so on have appeared in many places. The specific manifestations are: when the called party prompts that it is temporarily unable to connect and shut down, when the calling party prompts that there is no network signal, and the voice intermittent, no voice, and disconnection during the call. There are also large underground parking lots, large shopping malls, some remote mountainous areas, mining areas, and construction sites, and it is even more difficult to communicate. We are one of the professional Cell Phone Signal Jammer App and micro repeater suppliers in southwestern China. Products include signal amplifiers, cell phone signal boosters, repeaters and corresponding accessories. The address is located in the largest professional security electronics market in Southwest China-Chengdu Dacheng Security Electronics Plaza. The company is mainly engaged in the research and development, production and production of mobile communication network optimization system solutions, network optimization auxiliary products, radio frequency modules, radio frequency passive components and other products. Sales.
