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Portable High Power Cell Phone Signal Jammer Mobile Phone Blocker

The principle of cell phone blocker

A common cell phone jammer emits its own signal to boost reception on smartphones and cell phones. Cell phone opponents can send out radio waves with a cell phone signal blocker, which disrupt or prevent the GSM radio signals required for reception. Some models can not only interfere with cell phone networks, but also with data networks (WIFI) and GPS signals.

Cell phone jammer using frequency doubling, frequency division, frequency hopping filtering and other technologies to analyze the shielding frequency required for the uplink and downlink channels of the communication tools; customize the spherical shielding space according to the power of the shielding body, and automatically form a shielding magnetic field within the specified range. Disable it in this space with communication signals,When the phone jammer is in working state, the function of sending and receiving signals of mobile phones within a specified range can be disabled, and it cannot dial out or dial in, so as to achieve the purpose of forcibly disabling it.

Application of cell phone jammers in school examination room

The problems in exam situations are well known. The use of unauthorized aids such as mobile phones, smartphones, tablets, wearables or similar in exam situations is considered an attempt at cheating.

For some time now, auditors have been increasingly observing a remedy through the use of so-called mobile phone jammers.

Cell phone signal jammer have become standard in important places such as exam rooms/prisons/churches/governments. Now important exam rooms need phone signal jammer to prevent candidates from contacting the outside world through wireless signals. The current cell phone jammer is full frequency band, it can block all 2/3/4/5G signals and 2.4/5.8G WIFI signals and Bluetooth signals under all communication operators. GSM blocker principle is that the frequency of its own communication facilities will interfere with the frequency of the receiving the base station and the wireless router, so as to achieve the purpose of shielding them.

In important places such as examination rooms and prisons, cell phone jammer are used to block the signal. If there is no signal, the mobile phone naturally cannot communicate with the outside world. There are large and small exams in our life, the middle school entrance examination and the college entrance examination, the fourth and sixth grade exams. All are very important exams in life. In order to prevent candidates from cheating and ensure the fairness of the test, cell phone blockers are essential.

How to choose a mobile phone jammer:

The selection of a cell phone signal jammer is mainly through three dimensions: according to the type of signal to be shielded, the power level, and the appearance.

The shielding device is mainly used in various examination rooms, courts, detention centers, conference centers (rooms), government, military and other places where communication tools are prohibited from entering. So how should you choose a suitable cell phone blocker according to your needs? From the manufacturer’s point of view, if you choose improperly, the installation will have no effect, it will easily cause the product to be returned or exchanged, waste time and waste freight, topsignaljammer Teach you how to choose a phone jammer that suits your needs.

First, the shielded signals can be divided into wireless signals transmitted by mobile communication base stations, Wi-Fi, etc., in addition to 2.4GWIFI, 5.8GWIFI, VHF, UHF and other frequency bands. This kind of frequency band can be combined according to different needs, and can form different kinds of frequency blocker. Therefore, you must first understand the signal you want to shield. The mobile phone signals that are normally shielded are 2G, 3G, 4G, 5G and 2.4G, but 5g cell phone signal jammers that can shield 5g signals are already the mainstream of purchase.

Second, the power of the phone signal jammer: generally divided into low power, medium power, and high power. Low power: total power 3W-80W. Medium power: total power 80W-160W, high power: total power 160W-800W. Except for special occasions, it is generally not recommended to use high-power signal jammers, which will seriously interfere with the base station signal transmission and also have a certain degree of radiation to the human body. For standardized examination rooms and conference rooms, it is recommended to use low power. Even if a low power can not achieve the effect in some places, you can choose multiple cellular layouts. This effect is better than the effect of using a single medium or high power, and the radiation is not that big.

Third, the appearance is not particularly important compared to the shield signal, but the structure of the installation is different. From the appearance, mobile phone jammers can be divided into external antennas and internal antennas. The external antennas extend outward due to the external antennas. The external antennas are more stable because of the extended antennas. In addition to the external power adapter of the antenna, the external antenna of the machine is also external, so compared with the built-in antenna, it occupies a larger space. Generally speaking, the antenna and power supply of the built-in antenna are installed in the case, which occupies a larger area. Small and convenient to use.


Common Search Terms

Cell Phone Scrambler | WiFi Blocker | GPS Jamming Device | UAV killer

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