![]() The closer the interference location is to the base station, the stronger the BCH field strength, which is effective. It should be noted that in order to interfere with the mobile network by the jammer, it must be ensured that the signal field strength sent by the jammer is much larger than the field strength of the mobile signal BCH in the interference area. The cell phone jammer only blocks cell phone signals and will not affect other electronic devices. Their working principle is to implement co-frequency electromagnetic interference to the wireless network on which mobile phone communication depends, so that the mobile network cannot communicate normally, so as to achieve the purpose of interference. Jammers are also known as cell phone jammers, cell phone signal blockers, and secrecy devices. Let's take a look at what a signal jammer is. Once there is a need for a call, it first asks the MSC through the BCH for instructions. In the standby state, the mobile phone communicates with the base station through the BCH broadcast control channel. When the mobile phone communicates, it contacts the base station through the uplink frequency, and then transfers the signal to the MSC (Mobile Service Switching Center) to realize the call. Complete the transmission of data and sound. ![]() The mobile phone and the base station are connected by radio waves at a certain baud rate and modulation method. Simply put, it is within a certain frequency range. In order to understand how jammers interfere with mobile phone signals, you must first know the working principle of mobile communication. The working frequency band of the jammer has been extended from centimeter wave and millimeter wave to infrared and laser frequency band, and it is developing in the direction of increasing transmission power, creating effective jamming patterns, using computer adaptive control and phased array technology. According to the usage, it is divided into multiple use and one-time use (throwing) jammers. Jammers can be deployed on the ground, vehicles, ships, aircraft and missiles. Jammers are divided into: clutter jammers that transmit pure clutter or clutter modulated signals to suppress enemy electronic equipment, blur the communication signal, or obstruct the radar target echo and lose the ability to detect signals to receive the enemy After the signal is properly processed and forwarded, false signals are used to deceive, confuse, and destroy the normal operation of the enemy's electronic equipment. The radio communication equipment can also be used as a communication interference device by adding a communication interference adder.Ī signal jammer is an electronic device that transmits or retransmits electronic jamming signals to disrupt or deceive enemy electronic devices, reducing their effectiveness or even failing.Įlectronic equipment that emits electromagnetic waves to disrupt or disrupt the normal operation of enemy communications and radar equipment. According to the mode of transportation, it is divided into ground (portable, placed, vehicle-mounted), airborne, shipborne and throwing communication jamming equipment. ![]() According to the working band, it is divided into long-wave, medium-wave, short-wave, ultra-short-wave and microwave communication interference equipment. Signal jamming equipment is an electronic countermeasure equipment used to generate and transmit jamming signals to disrupt and disrupt enemy radio communications.Īccording to the interference spectrum width, it is divided into targeting communication jamming equipment and blocking communication jamming equipment.
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