2020 Julypage 3

The conference hall shields the mobile phone signal, this can have

Some cadres complained that during a meeting, the conference hall would turn on the mobile phone signal jammer to block the mobile phone signal. Once they entered the conference hall, they were completely “lost” and were very uncomfortable. Some people think that this is “a delay”, saying that they have been complained by the masses because the mobile phone cannot be reached. Some people even directly asked: Is it necessary? Have a meeting and leave the phone temporarily, is it really that serious? Nowadays, the mobile phone has become an “external organ” of modern people, regardless of whether it is on the way to work, at work, or at a party, it is in the state of “people do not leave the machine, the machine does not leave the hand”. The latest survey shows that Chinese people look at their mobile phones for an average of 3 hours a day, making them the second most addicted person in the world.

portable wireless signal jammers

People’s attention is severely distracted, time is cut into fragments. Not to mention the whole time of a meeting, even if it is more than ten minutes without looking at the phone, many people are not at ease. Some netizens describe that the most painful thing today is not “the distance between life and death” but “the phone has no power, no internet, no signal.” In a conference that should be serious and efficient, we are also used to seeing too many “head down landscapes”: he is using his mobile phone when setting up work on the stage; he is using his mobile phone to convey the spirit on the stage; Cell phone. Really busy managing everything, can’t stop for a moment? Closer to see, there are not many electronic offices. Most of them are browsing Moments, or even visiting online stores and playing games. If you want to portray these people, it is more appropriate to “read only the mobile phone screen and ignore the meeting.” Of course, it is difficult to put into the meeting agenda with such a deliberate and absent-minded participation.

From this point of view, cell phone jammer for meetings are not necessary, but necessary. Compared with the small probability event of cutting off the network cable and “delaying work”, the negative effects of playing mobile phones are much greater. We often talk about holding useful and efficient meetings. The “useful” and “efficient” here mean that the content of the meeting must be free from formalism and less idioms in Mandarin. At the same time, it should also include the attendees, heart, and brain. If all of you here are “people sitting in the meeting place and their hearts floating on the Internet”, the meeting will be reduced to another form of formalism. If we are opposed to meetings for the sake of meetings and emphasize on solving practical problems, then we should also be wary of perfunctory participation attitudes, and we should also restrict mobile phones from “buzzing” and “didi” disturbing people’s minds. “If you have a problem, hold a meeting and put it on the table to discuss.” “Large meetings, medium meetings, and small meetings are all necessary.

How does cell phone signal jammer work!

The current cell phone jammer is full-band. It can shield all the 2G 3G 4G signals, 2.4G WIFI signals and Bluetooth signals under all the three operators of China Mobile, China Unicom and Telecom. Its principle is sent by itself. The frequency interferes with the mobile phone receiving the frequency from the base station and wireless router, so as to achieve the purpose of shielding them. Generally speaking, the working principle of the mobile phone signal jammer is that the frequency emitted by the jammer interferes with the normal frequency of the mobile phone receiving the base station, making the mobile phone unable to connect to the base station, and thus unable to make calls, receive and send text messages and surf the Internet.

mobile signal jammer 5G

Within a certain frequency range, the mobile phone and the base station are connected by radio waves, and data and sound transmission are completed with a certain baud rate and modulation method. The jammer scans from the low end frequency of the forward channel to the high end at a certain speed during operation. This scanning speed can cause garbled interference in the message signal received by the mobile phone. The mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station and achieve the purpose of shielding the mobile phone signal. The mobile phone appears to search the network, no signal, No service system, etc.

No matter what cell phone card you use, as long as the cell phone cards under China Mobile, China Unicom and China Telecom will be blocked. WIFI will also be blocked. Unless you use 5.8G WIFI to surf the Internet, because the standard configuration of the jammer does not shield 5.8G WIFI. However, some schools may let jammer manufacturers order 5.8G frequencies just in case, so this is not guaranteed to be absolutely foolproof.

Whether it is a high power jammer or a small signal shielding instrument, its principle is to interfere with the mobile phone to receive the normal frequency sent by the base station through its own frequency, so that the mobile phone cannot contact the base station, so as to achieve the purpose of shielding. The principle of shielding WIFI is actually that the signal jammer will send out the corresponding frequency when it is working to interfere with the mobile phone to receive the normal frequency sent by the router, so that the mobile phone cannot connect with the router and cannot access the Internet normally.

Mobile phone signal jammers are mainly used in some school examination rooms, dormitories, detention centers, military units and confidential meeting rooms, etc. So as long as you enter these places, your mobile phones will be shielded, and you will not be able to make calls, receive text messages, and access the Internet normally. There is no exception, and nothing can be set to avoid being blocked.

Can a mobile phone signal jammer in an examination room shield a classroom?

Important admissions exams, qualification exams or final exams need to install mobile phone signal jammers to shield the electronic signals around the exam room and prevent possible electronic cheating. So, how much area can the mobile phone signal jammer in the examination room shield? Can only one shielding device be used in an examination room for shielding purposes? How many jammers should be used in a teaching building?

First of all, we need to know: The cell phone jammer in the examination room has a theoretical shielding range, which is about a radius of 0-20 meters. But please note that this is a theoretical distance. The actual effect should be combined with the local signal strength, especially whether there is a signal base station nearby. If there is a signal base station within 200 meters, the shielding effect will be compromised. In addition, the wall will weaken the shielding effect of the shield. As the signal is stronger near the window, the shielding effect will be weakened.

arm gsm 3g gps phone jammer

The standard classrooms in schools are generally about 75 square meters, each classroom equipped with a shielding device can achieve better results. It can be placed in the middle of the classroom for maximum shielding. Of course, this must be determined in conjunction with the power supply wiring. It is also common to place the shield at the podium. If it is a larger classroom or there is a base station nearby, you can place two jammers in each classroom, one at the front and one at the front, and the shielding signal is superimposed and enhanced, and a better effect of 1+1>2 will be achieved. In addition, in order to ensure the shielding effect, another shield can be arranged every 10-20 meters in the aisle of the teaching building. Finally, it should be noted that the installation height of the shield is preferably 1.5-2 meters from the ground.

MDPB-5E (6 channels) upgraded mobile phone signal 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 effect of the device itself on the signal. At the same time, the newly added 4G frequency band solves the disadvantages that other products cannot shield the 4G frequency band, and the shielding effect is better than other similar products. The shielding effect is stronger, the performance is more stable, and it is easier to be recognized and accepted by customers.

MDPB-5E (6 channels) upgraded mobile phone signal jammer can automatically form a shielding magnetic field within the specified range when it enters the working state, forcibly disabling mobile phone signals, MDPB-5E (6 channels) upgraded mobile phone signal jammer only works Mobile phone communication signals are shielded without causing interference to other electronic devices, which has also become its rare advantage. The advent of the upgraded version of MDPB-5E (6 channels) mobile phone signal jammer may completely solve the harm to users caused by the information leakage of communication facilities, allowing people to enjoy the speed and convenience brought by high-tech to mankind while ensuring The security of its information.

MDPB-5E (6 channels) upgraded mobile phone signal jammerIts most important applications are in examination rooms, prisons, gas stations, mobile phone bomb prevention, oil depots, liquefied gas stations, detention centers, interrogation rooms, courts, labor reform teams, conference rooms, theaters , Churches, libraries, school dormitories, special security and confidential occasions (confidential offices, negotiation rooms, mobile vehicles, mobile politicians and business dignitaries guarding) scenes, etc., and mobile phone signal jammers are becoming more and more important in social life.

The influence of magnetic field strength on test signal jammer

I believe many people are unfamiliar with the test signal jammer. This is a kind of equipment that has become popular in major examination rooms in recent years. It can effectively prevent candidates from cheating by using electronic signals. It has been widely used now In the university and middle school exams in major schools. Especially in the upcoming college entrance examination season, major schools have to re-purchase a batch of more professional machines and equipment with stronger shielding effect to ensure the normal order of the examination room and maintain the fairness of the examination. However, what we are going to talk about today is , Regarding the influence of magnetic field strength on the test signal shielding device.

Camouflage handheld phone jammer

As we all know, the effective range of the test signal jammer is generally about 0 to 50 meters in radius. According to different models of different manufacturers, there will be differences in specifics. However, the strength of the magnetic field will actually affect the effective range of the test signal jammer. Yes, because it relies on the magnetic field to isolate the electronic signal, so in specific use, pay special attention to whether there is a base station within 500 meters of the examination room. If it is 500 meters away, it will generally not cause any impact. If it is within 500 meters, it should be judged according to the specific distance. So the best way is to actually put it into use, and then judge how many units need to be purchased based on the actual results. For those who want a stronger shielding effect and a larger range of machinery and equipment, you can contact Beijing Shenzhou Mingda for the price of signal jammers. This is a professional manufacturer and has many years of experience in research and development of test signal jammers. It has been developed for many years. Deeply recognized and trusted by customers, friends who want to eliminate electronic signal cheating in the examination room are welcome to contact and cooperate.

Mobile phone signal jammer originally has so many functions

At present, each of us has a mobile phone. From the previous 2G mobile phones to the current 3G and 4G, some people even start to use 5G mobile phones. No matter which mobile phone you are using, turn on the mobile phone signal blocker. Even high-end mobile phones will have no signal. It can be understood that the mobile phone signal jammer is the natural enemy of mobile phone signal, but the type of cell phone jammer on the market is too big, and I don’t know which kind of mobile phone signal jammer is better. Some people will find after using it that the Jammer-mart cell phone signal jammer is still quite good, so let’s take a look at the functions and characteristics of the Jammer-mart phone signal jammer!

GPS cell phone blocker

The purpose of Jammer-mart mobile phone signal jammer has the following points

1. It is used for students’ college entrance examination, because the college entrance examination is the most fair and just test. For most students, it may change their lives. Therefore, using a mobile phone signal shield during the college entrance examination is also a fair and just one for students. Kind of guarantee.

2. Used in conferences, theaters, military, etc.

The function of Jammer-mart mobile phone signal jammer has the following points

1. The shell of the mobile phone signal jammer is made of advanced aluminum alloy shell that can dissipate heat, so it will not have any influence if it is used without electricity for a long time.

2. When the mobile phone signal jammer is turned on, it only has a shielding effect on the mobile phone, and has no effect on other electronic devices.

3. The shielding range is about 1-40 meters, but it should be determined according to the performance of the signal jammer .

4. The mobile phone signal jammer does not have any radiation, and it is a truly environmentally friendly mobile phone signal jammer.

Therefore, after the introduction of the above two points, let us have a certain understanding and understanding of the mobile phone signal jammer.

Which network frequency bands can the 4g signal jammer shield?

There are some differences in the working principles of different jamming device. In some special cases, people want to know how to avoid jammers in mobile phones. At this time, we need to understand all aspects and be able to constantly understand these frequency bands. It is the most important. Many jammers basically have these relatively fixed frequency bands in the process of working. We can understand them correctly, and then keep our signal within the range of this frequency band. Then for you, it is natural Can be avoided.

gps jammer

How do mobile phones avoid the principle of jammers? When you want to avoid jammers, everyone should really understand the specific principles. The principles of different devices will have certain differences, so we should do well in all aspects. The understanding and correct understanding of the specific principles can then bring us more development, so we all need to pay attention to this aspect in time when we are doing it. This is our better way to avoid problems. Prospects.

When you want to know how to avoid jammers on mobile phones, you can really use the new device during the whole use process. When many new device identities are in use, because the specific frequency bands of these signals are not within the overall control range at all, we need to truly understand each situation during the application process. Make the choice of equipment carefully so that it will be better for the whole process, so you need to have a complete understanding of the process.

If you really want to know how to avoid jammers on mobile phones, there is one of the most direct and effective methods, and then you can directly damage the device while others are not paying attention. When you can do a good job of destroying the device, otherwise the mobile phone will not be affected, but in this process, you should still pay attention to more aspects, and be able to really understand clearly under this situation . If you can turn off the power secretly, or destroy the total power supply, you can prevent the jammer from working and ensure that we can use the phone normally. In the process of choosing a method, you need to truly combine your own actual situation, and then choose a practical method.

How effective is the shielding of household signal jammers?

The mobile phone signal shielding system is a relatively professional modern communication signal shielding technology, especially in the special environment of prisons, which puts forward higher requirements on the mobile phone signal shielding technology. For example, in the application environment of the communication signal shielding system of a general meeting, participants come and walk in a hurry, and there is almost no time to “search” for the blind spots of communication signal shielding. In the special environment of the prison, the number of people is dense and the activities are more concentrated. This is the time to use mobile phone signal jammer for shielding.

1. How to evaluate the effect of the cell phone signal shielding system in the prison? If there is no shielding blind spot in the prison, the test should be repeated. In places with strong signals, such as “windows” or “every corners”, professional equipment detectors should be used. , Radiation, and shielding of other systems; to achieve no blind spots; to comply with the inspection regulations of relevant departments

buy signal jamming device

2. The shielding effect and external shielding?

The high-quality mobile phone signal shielding system project must be completely shielded without affecting the communication of residents, not letting people complain, not allowing mobile and China Unicom to cause trouble, and the shielding area is more accurate, and there is no shielding outside the shielding area, which can be regarded as a complete acceptance project.

3. Problems with upgrading and expansion? The wireless communication technology is developing rapidly. 5G is currently in the trial operation stage. Yesterday, the system could be completely shielded, and there may be problems today. Therefore, the construction of the shielding system should be modularized, and it can be easily upgraded according to the changes of the surrounding communication facilities, so as to substantially save the project investment and achieve permanent shielding.

Factor 1: the effective shielding of mobile phone signal jammer

The efficiency of the so-called cell phone jammer is whether the shielding effect has blind spots or leaks. Near some prisons, there may be sources of strong mobile phone signals. In order to achieve a good shielding effect, a lot of materials and energy will be spent correspondingly, and the cost will correspondingly increase substantially. Therefore, the better the shielding effect, the cost will increase accordingly. In actual use, the shielding requirements of the prison area are generally higher, with a little leakage and blind spots. Some personnel may seize this loophole, so that the mobile phone can be used in the originally prescribed shielding area, which cannot achieve the original intention of shielding the mobile phone.

Factor 2: No malfunction time of mobile phone signal jammer

If the original stipulation that the failure-free service life is 1 year and the failure-free service reaches 3 years in actual use, the cost performance will be tripled. If the original stipulation that the failure-free service life is 1 year, it will often fail in less than half a year in actual use. Although it is a free warranty, the risk is immeasurable, personnel resources are wasted, and the corresponding cost performance is greatly reduced.

Factor three: external shielding of mobile phone signal jammer

If external shielding is not considered, it is relatively easy to simply shield the mobile phone signal, as long as the shielding power is increased. But it is necessary to ensure that the shielding area has no blind areas and no leakage points. The power intensity in the shielding area is relatively large. If there is a little leakage, the external shielding will be large. This requires full consideration and technical control during shielding design to achieve precise and efficient shielding without external coverage.

Factor 4: Cell phone signal jammer cost

The cost should follow the shielding requirements and budget. You can’t blindly choose cheap machines, and you can’t think that expensive is good. In actual choices, word-of-mouth is very important. It is more necessary to investigate past cases on the spot, test the shielding effect, and then make selections.

Explain the function of GPS jammer

When purchasing and using vehicle mortgages, it is best to configure GPS jammer within a certain stage. Especially some car dealers who hand over the car and purchase the mortgaged car, in other words, once they receive the car, they can turn on the GPS jammer and put one in the car, and one in the car trunk! When the shield is turned on, you can be assured of peace of mind when you take the car back and forth. However, the jammer cannot be activated 24 hours a day, so after the safety reaches its own chassis, you must find a technical professional to investigate the GPS by yourself, and modify the GPS positioning equipment and mortise locks, key changes and other security guards to prevent mistakes. just in case.

gps signal blockers

1. Understand the GPS jammer
GPS jammers (jammers) can reasonably prevent being tracked by GPS communication satellites, reasonably affect GPS communication satellite signals, and maintain your track privacy protection and information business secrets.

2. The function of GPS jammer
The GPS signal is the same as the signal on the mobile phone, it is very susceptible to the influence of electronic components. The signal jammer can shield all the signals in a certain range, so that all communication devices in the range lose the signal. The installation of a GPS locator on the car enables buyers to easily find their own car on the GPS monitoring management platform. As everyone knows, such a good product is also found by criminals to find loopholes. If you buy a signal blocker on Taobao, Turn on when the car is stolen, there will be no signal in the car, and the car will go offline on the service platform, as if the whereabouts of the car are unknown, you can’t find it anyway.

3. Disadvantages of GPS locator
I have to admit that the GPS jammer also has disadvantages for the user. The signal jammer is only temporarily turned on, and it is unlikely to be turned on all the time. If he turns off the jammer, the GPS locator will have a signal again. Drivers can quickly find the stolen car based on precise positioning information.

In addition to signal jammer, some people will say that they will use signal detectors to find out and destroy GPS locators. Yes, this is also an objective fact, but this is only valid for some GPS devices. If the GPS tracker is in a dormant state most of the time, the signal detector will not be able to detect it! what happened?

For example, some ultra-long standby GPS locators can only be awakened once a day. After being awakened, the precise positioning information of the vehicle is sent back to the buyer’s network platform and then it enters the dormant state. In the dormant state, it is Without a signal, it is absolutely impossible for car thieves to detect it! In addition, it is also free of wireless network installation. There is no wiring on the surface of the machine and equipment. It can be placed anywhere on the car (if it does not have to be placed in an area blocked by the signal). It is very concealed for engineering safety.

Playing with mobile phones while praying, priests install mobile phone signal jammers

Maybe you are thinking, is it really appropriate for Father Madonna to use a cell phone jammer privately? According to him, his actions have been supported by the local police. Obviously, not everyone is welcome to the priest’s measure. The owners of the local store are very upset. They claim that the priest’s signal blocker has interfered with their credit card machines.

cheap signal jammers

Now, people are increasingly unable to leave their mobile phones, even when praying. This problem has suffered from the priest Michele Madonna of the Church of Our Lady of the Holy Mountain in Naples, Italy. According to the “Daily Mail” report, the godfather finally found a solution-cell phone signal jammer. Madonna bought this device for $60. The priest said that he did this not because of his lack of patience, but the embarrassment he saw when he advised people to turn off their phones and concentrate on praying.

Maybe you are thinking, is it really appropriate for Father Madonna to use a cell phone signal jammer privately? According to him, his actions have been supported by the local police. Obviously, not everyone is welcome to the priest’s measure. The owners of the local store are very upset. They claim that the priest’s signal blocker has interfered with their credit card machines.

In some countries, the use of signal jammer is illegal. In the first half of this year, a man in Florida, USA, was fined $48,000 for driving around with a cell phone signal jammer.

We have solved the four major methods of cracking the signal jammer

Four ways to crack the school signal shielding! Don’t worry about exams

First declare that our company has completely solved this problem!

Method 1: Number segment cracking method

The school uses an older signal jammer that can only shield the old number segments of PHS, China Mobile, and China Unicom, such as the new Telecom Tianyi 186, China Unicom’s Wo number segment and China Mobile’s TD-SCDMA etc. number segment. of! Simply put, the China Unicom and China Mobile numbers beginning with 13 15 and all PHS numbers can be blocked! The beginning of 18 will not be blocked!

jamming signal

Method 2: Band cracking method

Because the school’s cell phone jammer works to shield the mobile phone by interfering with the mobile phone signal of the designated band, so long as the mobile phone’s receiving transmission frequency can be modified to prevent it from being shielded, the jammer can only shield the mobile phone signal of 900—1800MHZ, and the mobile phone The receiving and transmitting frequency of 850-1900MHZ is much larger than the shielding range of the jammer, so as long as the receiving and transmitting frequency of the mobile phone is adjusted to the maximum in the mobile phone settings, the mobile phone signal can be received normally.

Method 3: wifi cracking method:

This method has high requirements for mobile phones and the environment, but the effect is the best and most concealed. The premise is that the mobile phone must have wifi wireless Internet access function and there must be an available wireless network around (it is almost impossible in our first high). After searching and successfully connecting to an available wireless network with your mobile phone, you can still surf the Internet even if your mobile phone has no signal and no traffic. At this time, if you want to find the answer you can’t find, you can use Baidu. If you want to send the answer, you can use QQ. Row. A method of hyper perversion.

Method 4 Bluetooth cracking method:

It is suitable for students with a distance of no more than 50 meters to pass answers to each other. It is also possible to test two adjacent classrooms by myself. Install bluetooth software like bluetooth hacker on the mobile phone, and then both sides turn on the bluetooth visibility. In the software option, there is an option to force the message to be sent via bluetooth. Enter the answer and force it to be sent, and all bluetooth mobiles that turn on the visible bluetooth will accept To the answer, one person sends the whole class to share. The above method is a method that I came up with after several days of meditation. It is dedicated to all the students in a high school who are distressed by the signal being blocked. I hope that using the above methods can liberate students from the abnormal school and get relaxed and happy!