Professional Technology Blog At Perfectjammer

In fact, the principle of mobile cell phone jammer is very simple. It is mainly composed of three parts, antenna, special letter mobile phone amplifier, indoor antenna. These three parts form a wireless system to enhance cellular reception. Cell phone jammers are usually relay systems. The receiver system includes an amplifier that increases the gain or power […]

Needless to say, the cell phone jammer on the market can limit the cell phone signal launched by the rocket to within 500 meters, with a radius of > 20 meters. You don’t have to worry about other electronics being affected as it only blocks cell phone signals. When the nearby signal is blocked, the phone will […]

In addition to having a desktop style, there is no doubt that this high-power cell phone jammer can be used indoors and more, as well as in offices and conference rooms to create a peaceful environment. And this high-power 4G mobile phone jammer is designed with high power, so the strong shielding range is of course an […]

Since this cell phone jammer uses a stronger and longer external omnidirectional antenna, it can cut off all transmission frequencies covering the downlink from all directions. This Bluetooth UHF VHF 4G# adopts a new design, good cooling system and cooling fan, which can easily achieve the goal of 24/7 continuous work. Except that many high-power cell phone […]

Generally speaking, the common mobile cell phone jammer on the market can’t really interfere with the recording of the iPhone, mainly because the filter capacitor is added to the recording microphone system of the iPhone, so that the recording function of the iPhone has a relatively strong anti-interference ability. But not all cell phone jammers can’t work […]

Machines and equipment have passed rigorous testing and embrittlement testing before leaving the factory. However, some damage to the mechanical equipment during transportation was not removed. If the customer receives the goods and shakes the machine lightly, please hear the sound of parts falling. Disabled. And contact the agent or manufacturer to facilitate timely maintenance; […]

Radio frequency electromagnetic waves can cause the receiving antenna to generate radio frequency current. Theoretically, if the contact is poor, it will indeed generate RF sparks in the circuit, which can induce gas vapors. Zhang Bin, the fire evidence identification center of the Tianjin Fire Research Institute of the Ministry of Emergency Management, told reporters, […]

What surprised him even more was that when his colleague used mobile phones of other brands, the call quality was not affected, but it was still inconvenient to use the colleague’s mobile phone card on his mobile phone. A colleague of Mr. Zhang also confirmed to reporters that he has often encountered this phenomenon recently, […]

Some large or professional state exams also require cell phone jammer. Mobile phone signal jammers are also inseparable from accidents caused by improper operation of gas stations and gas station personnel. Some detention centers or large and medium-sized prisons also use cell phone signal jammers in order to communicate with the outside world through abnormal means. […]

During the test, there were phenomena such as cheating with the mobile phone when the mobile cell phone jammer was not connected. Play games on your smartphone or send text messages in the classroom. affect student learning. The main purpose of installing cell phone jammers in schools is to use support such as video surveillance. Install cell […]