With the increasing demand for prison security around the world, the use of signal jammers has become an important technical means to curb crime in prisons. In Chile in particular, relevant measures are being actively promoted to combat criminal activities carried out using mobile phones. However, neighboring residents are worried that these jammers will affect their daily communications. This article will explore the application of signal jammers in prisons and their potential impact on neighbors from both a technical perspective and security needs. cell phone jammer

　　Technical principles and operation of signal jammers

　　The working principle of signal jammers is to interfere with the normal operation of mobile phones and other communication devices by transmitting signals in a specific frequency band. signal jammer According to Claudio Valencia, an electrical engineering scholar at the University of Santiago, Chile, these jammers do not transmit signals randomly, but use directional antennas to concentrate signals to specific areas, such as inside prisons. GPS jammer If designed and installed properly, jammers can accurately interfere with communications in the target area without affecting surrounding residents.Wifi jammer

　　Directional antennas are key to reducing interference with external communications. Professor Valencia pointed out that directional antennas can accurately point to the prison area to avoid signal spillover, thereby protecting the integrity of neighbors' communications. This design ensures that communications within the prison are limited, while daily communications outside are not interfered with.

　　More directional antennas and technology optimization

　　In addition to directional antennas, Jorge Sandoval, a civil electrical engineer at the University of Chile, further emphasized that the use of highly directional antennas can be more effective in reducing interference. Such antennas can be more focused on specific areas, minimizing the impact on neighbors. He pointed out that the interference signals sent by the signal jammer can be precisely targeted at the equipment inside the prison without inadvertently affecting the external communication network.