Professional signal jammer information blog on Greatjammer

Comparison between smart public network signal blocking system and traditional jammer

Stubborn pain points of traditional shields: Large number of installations: Generally, a medium-sized prison traditional signal jammer device needs to install hundreds of low-power devices or dozens of high-power devices, or even more. Large amount of radiation: Dozens or even hundreds of jammers ...

Four improvements help the security of the safe prison

1. Environmental detection, pilot frequency application The core equipment of MDPB series cell phone jammer system adopts pilot frequency interference technology, so as to cover a wide range with smaller power. A complex environmental variable parameter model is established in the system database. ...

Smart public network signal blocking system

The smart public network signal blocking system is a new public network signal (mobile phone signal) management and control system launched by Shenzhou Mingda in 2016. The system is composed of a receiving end, a sending end, and a digital signal processing module. It adopts domestic advanced signa ...

Product advantages of intelligent public mobile phone signal jammer

Ten times or more: Compared with the traditional jammer, the intelligent public network signal control system has the same output power of 10W, and the shielding distance of the intelligent public network signal control system is more than ten times that of the traditional jammer. Human body harmle ...

Mural Smart Phone Signal Detection Jammer

1. Performance The device adopts a seven-channel micro-power transmission (2W per channel), a high-gain directional transmitting antenna design scheme, and a low-gain 7dbm per channel. Everyone knows that in the field of wireless signal transmission, the shielding distance of each gain of 3dbm will ...

What factors will affect the wireless signal jammer?

Recently, many schools are very busy, because the day of the college entrance examination is getting closer and closer, and they are constantly preparing for the materials and machines required by the examination room, so that candidates can take the examination in a stable and orderly environment. ...

The effect of mobile phone signal jammer on college entrance examination

At present, there are many exams in society, and the most influential one is the annual college entrance examination. This is the door for thousands of students to enter the halls of institutions of higher learning, and a bridge for countless families to place infinite hope. There are also entrance ...

The warden thinks cell phone jammers are very helpful

Oklahoma City-Thousands of illegal mobile phones fall into the hands of prisoners who use devices to commit crimes. However, prison officials testified on Monday that the best way to prevent this from happening is to prohibit the use of cell phone jammer . Prison officials in Oklahoma and South Car ...

Long-term use of mobile phones can cause anxiety and depression

Smart devices have brought us many benefits, and these benefits have played an important role in our lives and have enriched our lives. Studies show that in the age of smartphones, more entertainment items are available, and playing mobile phones has become a daily routine in people's lives, but pl ...

The Office of Academic Affairs purchased classroom mobile phone shielding devices

Everyone is not unfamiliar with cell phone signal jammers. During the middle and high school exams, they were already familiar with this. The school placed the jammer in the classroom to prevent students from using their mobile phones to search for answers on the Internet during the exam. How does ...

Signal jammers are vigorously promoted and put into use in the examination room

Examination signal jammers have been vigorously promoted and put into use. Examination signal jammers can be seen in the examination rooms of major schools. Why do more and more schools choose to install this kind of equipment? In fact, it will be popular only when there is demand. It is precisely ...

Recording blocker becomes a part of information security construction

When we are in a meeting, we usually discuss some of the company’s confidential content. If we are not careful, the content of the meeting may be monitored, leading to the disclosure of some of the company’s secrets, which may cause immeasurable losses to the company. We should really need the he ...

How to choose and install signal jammer in student dormitory?

In recent years, with the rapid development of mobile phones, it is not uncommon for students to use mobile phones to affect their lives and studies. Many teachers who inspect the dormitory at night said that they often find some students use their mobile phones to go online in the bed, some even i ...

Signal jammer specially developed by international advanced shielding technology

The 6-channel upgraded cell phone jammer is a mobile phone signal jammer specially developed and produced by adopting international advanced shielding technology to meet market demand. The equipment has undergone a brand-new upgrade, changing from 5 channels to 6 channels increases the shielding ef ...

Residents of Guiyang reflect the reasons why their mobile phone signals often drop

Recently, residents near the Guixi Cement Plant in Guiyang reported that their mobile phone signals are often unstable and often disconnected and cannot be used normally. After investigation by the staff of the Guizhou Provincial Radio Monitoring Station, it was found that the source of the problem ...

Medium power eight-channel mobile phone signal jammer

The mid-power full-band signal jammer is a high-tech product that our factory adopts foreign advanced technology, in accordance with the continuous development of communication standards, and carefully developed according to the actual situation of foreign mobile communications. It can be used in a ...

The radiation frequency of mobile phone signal jammer is the same as that of mobile phone

Canadian advertiser Grip Limited recently proposed a new idea. This is a tie that can hijack your home WiFi signal and change its transmission path. After wearing the tie, only users who are 10 feet away from the wearer can successfully find the WiFi signal. Therefore, when the father puts it on, c ...

Introduction of radio frequency band 3

Understanding the propagation law of the radio wave band helps us use signal jammer . 8. 2m frequency band (144.00～148.00MHz) This is a typical VHF frequency band, a very active local mobile communication frequency band. There is basically no reflection on the signal ionosphere of this frequency b ...

Allocation and propagation of radio frequency bands 2

Understanding the propagation law of the radio wave band helps us use signal jammer . 5. 15m frequency band (21.00～21.450MHz) This is another entry frequency band for shortwave beginners, and it is also a good DX frequency band. This frequency band is mainly due to the reflection of the F2 layer o ...

Allocation and propagation of radio frequency bands

The radio frequency band is divided into many discontinuous bands from low frequency to high frequency. Commonly used are HF frequency band, VHF frequency band and UHF frequency band. The higher frequency microwave frequency band is only used for amateur satellite communication and microwave commun ...

Selection guide and usage items of special mobile phone signal jammer for examination room

In the exam season each year, all parties begin to prepare for the exam. The invigilator has various tricks to prevent high-tech cheating. Among them, the special signal jammer device for the exam room is still an anti-jammer. However, Foshan Shangkino, as a well-known manufacturer of signal jammer ...

Installation process of signal jammer

1. Without setting control lines, installation and construction are simpler: The whole system takes the power carrier as the technical core. There is no middle wiring (the power cord that supplies power to the shielding layer does not need to be installed middle wiring), and there is no need for wi ...

The difference between built-in antenna jammer and external antenna mobile phone signal jammer

Of course, in terms of energy saving and heat dissipation, Shankino's built-in cell phone signal blocker cannot be compared with Shankino's external cell phone signal blocker. From the external structure point of view, the built-in cell phone jammer device integrates the transmitting antenna, power ...

GPS Jammer - Exploits used by multiple attackers with various motives

Nowadays, car thieves all over the world are using gps jammers to help them escape. Experts say it is only a matter of time before the worrying parties come forward. The low-power signals generated by the interference can generate noise and mistakenly believe GPS receivers that the satellite is not ...

High quality handheld portable jammers for sale

As the different types of cell phones have brought much convenience to people's daily lives and offered many entertainments in our spare time, it seems more and more people can not live without the cell phone aside. Hence, we see that whenever and wherever we are, the phones always appear in our ey ...

Mobile jammers can make smartphone data more secure

Security researchers have found that they have seen an important change in the fact that hackers would rather attack your smartphone than your computer. Your smartphone stores your more important information and your smartphone's data security is more vulnerable to hacking. You can use the cell pho ...

Application area of mobile phone signal jammer

Following the development trend of modern science and technology, mobile terminals such as mobile phones are also constantly developing trends. Most people have one or more mobile phones. Because it is very convenient to find someone at any time, you can play mobile games or listen to music. The pr ...

The use of mobile phone signal jammer in gas station

The equipment at the gas station is controlled by a computer. The signal of the mobile phone will affect the normal operation of the equipment and cause inaccurate measurement. More importantly, sparks will appear during the call from the mobile phone, which can easily cause a fire and cause an exp ...

The evolutionary history of offensive and defensive communication cheating tools and signal jammers

There is a kind of bad signal, called the college entrance examination two days. As a heavy mobile phone user, the battery and signal of the mobile phone are the life channel. If the battery is below 50% or the signal is not satisfactory, you will feel unhappy and insecure. For such a heavy mobile ...

The use of mobile phone signal jammers should be safety-oriented

1. The use of mobile phone signal jammers should not be exchanged at the expense of public mobile communications. Among the people who use cell phone signal jammers, some are to prevent cheating in exams, and some are to quiet the meeting place or keep the meeting information confidential. These ar ...

Installation and classification of mobile phone signal jammers

Mobile phone signal jammers are also called small repeaters and mobile phone companions. The signal amplifier is known from its name to increase the data signal. A professional amplifier that enlarges the mobile signal is called a mobile phone signal amplifier. The enhancer is used to enlarge the m ...

What are the effects of communication base stations on the social economy?

Regardless of the mobile communication system, the calling and called users do not directly transmit information. The calling user transmits the demand signal, which is transmitted to the central computer room through the base station, and the central computer room analyzes this information, determ ...

Mobile phone signal jammer interferes with the safe operation of high-speed rail

On October 13, Baoding Radio Management Bureau received a complaint about radio interference from the Baoding workshop of the Beijing communications section of the railway, stating that from the afternoon of October 12, the high-speed railway GSM-R communication system of Baoding East Railway Stati ...

How do jammers protect radio signals?

The signal jammer of the mobile phone scans during the working process at a certain speed from the low frequency band (the channel from the base station to the mobile phone) to the high frequency band and forms interference when the mobile phone receives the message signal that the mobile phone can ...

Long time no see signal jammer

Some people have found out, and some people haven't found out: The first teaching and Yifu Building of the South School have installed cell phone signal jammers. As a editor of a lower-headed party, I found out that WeChat could not be sent out after going through a teaching session yesterday, but ...

The jammer will put the car in a false lock state

On March 2, 2016, in an open-air parking lot in Tongzilin, Chengdu, a man in black sits on the side of the road, holding a black "remote control" in his hand. It was this "passer-by" who hadn't noticed him. After a Maserati was parked and locked, he immediately approached the car, easily opened the ...

The difference between communication jammer and recording jammer

The mobile communication jammer targets the uplink and downlink channels of the mobile phone system, using techniques such as frequency multiplication, frequency division and frequency hopping filtering to analyze the required shielding frequency. . When the shielding instrument is in working condi ...

Do you know how jammers work?

Do you know how jammers work? Any telephone signal within the interference range. You can get it for less. It works by interrupting the signal transmission frequency. It is generally used in prisons. It is a mechanism that can interfere with radio waves in various frequency bands. It has been place ...

Cell phone signal and interfering signal

The signal of cell phone and jammer will also be affected to some extent. Technically speaking, the quality of mobile phone signals is related to the following factors: 1. The distribution of the location of the base station (i.e. mobile communications transmission tower), such as an outdoor statio ...

Jammer: you can customize according to your needs

Almost everyone now has a cell phone and the number is increasing. These are used for different purposes. Few people do not use them for personal reasons. You have to understand that you want to use something and not overdo it. In some places where cell phones should not be used. You benefit from u ...

Do not damage the freedom of communication of others when using jammers

Signal jammer (also known as signal jammer / disconnector / suppressor / cutoff / isolator / confidential conference information machine) is our factory adopts foreign advanced technology, mainly for entrance examination to domestic college, adult college entrance examination, self-study examinat ...

Research on the working principle of cell phone jammer

1. Overview Cell phone signal jammers are also called cell phone signal blockers, cell phone signal jammers, conference security devices, etc. communicate normally, thus achieving the goal of interference. The abuse of mobile phone jammers led to an increase in complaints of public communication int ...

The best device to avoid cell phone being tracked

One way to avoid tracking cell phone usage is: Disconnect the phone, but we know that in most cases, this is impossible unless you are angry. It is easy to remove the battery from the phone. By the way, sometimes this method is unnecessary. Because some malware (such as Power Off Hijack) will trick ...

Thieves use jammers to commit serial crimes

The thief used a jammer to steal. The hooded thief attempted to break into the car in front of the suburban woman's house and used high-tech equipment to try to block her surveillance camera. Jeremy Ross of CBS 2 reported to Westchester Police Station and warned a woman. The woman said she submitte ...

Never use jammers for criminal purposes

A jammer is any device that prevents an electronic device from emitting a signal. They do this by emitting noise that interferes with other equipment in the area. Jammers have many uses. They prevent phone use in restricted areas such as prisons or restaurants. They can also reduce unnecessary call ...

Raytheon's next-generation jammer will generate tens of billions of dollars in sales

The total value of the plan is estimated at US $ 10 billion in the coming decades. But if you ask both the CEO of Raytheon and the think tank analyst, the value of the next generation of jammer is more than that. Almost two years have passed since the company won the $ 279.4 million contract for th ...

Australia to develop the next generation of jammers

Australia AVALON - Australian Defense Minister Penny said on Tuesday that Australia has reached an agreement with the United States Navy to develop the next generation of jammer for the EA-18G Boeing Growler (an airborne electronic attack aircraft). Payne announced plans to invest $ 250 million ($ ...

Disruptors play a huge role in counter-terrorism attacks

In recent years, terrorist attacks have occurred frequently, causing serious damage to people. Today, the issue of counter-terrorism has been widely discussed, and this is something that people need to pay attention to. We can see that the main means of terrorist attacks is bomb attacks, which have ...

Inexpensive practical jammer for ideal environment

If we need a quiet environment, such as reading a book, listening to music, listening to TV, away from phone noise, the teacher is in class, in the library and other places, and other conditions. , Blocking the phone signal is the best way. In many other cases, people must also cut other frequency ...

Add the multi-function jammer to the cart

Happy life is peace of mind. Peace of mind lies in a calm environment. Quiet environment away from different kinds of noise. In the force of noise, phone ringing can be popular and boring phone ringtone, then how to calm my mind towards your happy life? It will provide you with the best choice. Lea ...

Use a cell phone shielding to maintain a healthy lifestyle

In the era of high-speed information, most of us choose to indulge in smartphones and are not aware of maintaining a healthy lifestyle. This is the harmful effect of mobile WIFI addiction. What you need now is to get a functional cell phone wifi jammer from our store and stop the bad habit of cell ...

Mobile phone jammer avoids the disadvantages of using mobile phones

Some elementary and middle schools stipulate that students are not allowed to bring mobile phones to school. There are many discussions about whether students use mobile phones well or not. Today we www.szmid.com.cn will recommend you this mobile phone signal jammer, which can avoid the shortcoming ...

Use a mobile phone blocker to prevent texting while driving

There is evidence that texting while driving is more dangerous than drinking and driving, and almost everyone thinks this is a huge problem that must be stopped. It is now believed that distracted driving involves more than 50% of juvenile crashes. But the fact is that many people-especially teenag ...

Is the truth about signal jammers illegal?

As a medium of information transmission, mobile phones have occupied everyone's lives. It has brought convenience to people's communication and opened another door to the unknown world. Then there are advantages and disadvantages. While mobile phones bring convenience to people, they also bring hid ...

The mobile phone signal jammer is suitable for installation in noisy places

Some jamming devices transmit radio signals in the 800MHz frequency band, which is used as the mainstream carrier frequency band for NTT DoCoMo and KDDI au phones. Of course, there are interference products in other frequency bands. Currently, the main corporate users of mobile phone jammer devices ...

More and more people are buying mobile phone jammers

In the current market, the variety of mobile phone shields is dazzling, which makes it more difficult to choose a suitable mobile phone shield because different mobile phone shields are designed for different purposes. It is very important to understand the mobile phone jammer before deciding to bu ...

Mobile jammers ensure driving safety

Our world is changing and developing all the time. Many companies and enterprises have created and produced various innovations, advanced technologies and various equipment. Many gadgets have become so unusual and even so common that we cannot do without them and hardly remember the era when these ...

2.4 GHz wifi jammer for home and office

Mobile and wireless Wi-Fi network shields are designed to ensure your safety and protect your private property space from unnecessary telephone conversations, eavesdropping on communication channels and information leakage on mobile Internet channels, with the help of wireless Wi-Fi and Bluetooth n ...

What are the advantages of small cell phone signal jammers?

Recently, small cell phone signal jammer has appeared in our lives, but many people still don’t know what type of product it is, because compared to large jammers, this type of product is really It has a variety of advantages, but we have never bought it. It is not clear which aspects of its adv ...

Training institutions can use mobile phone signal jammers to increase the admission rate

The appearance of mobile phones has greatly facilitated people's lives, promoted the completion of work and study, and brought in the connection between people. But sometimes over-reliance on mobile phones will only make mobile phones a hindrance, a negative reaction. Especially for students, espec ...

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