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.

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 jammer​Its 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.

We have solved the four major methods of cracking the 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!

The anti-drone market has a bright future

Nowadays young people like to play with drones, because small drones can bring people unlimited fun, but some young people who have a shallow understanding of the law will use drones to spy on others’ privacy, thereby invading others Human rights. In order to be able to restrain and prohibit these young people from doing wrongdoing, the drone jammer was launched.

uav drone blocker

With the continuous progress of society and the increasingly moderate price of drones, more people will own drones in the future, so the intensity of the management of drones will increase, and it is inevitable that some people will not comply Laws, control drones flying everywhere. Or do not register the UAV to do some illegal things, then after the anti-drone system, these illegal things can be properly resolved, that is, interfere with the normal use of the UAV. Forcing the drone to land, thereby ensuring the safety of national airspace and the safety of social security.

In short, the prospects for the development of the anti-drone market are broad, so investors who want to invest may wish to get familiar with the rules as soon as possible to lay a solid foundation for future gains.

Principles of signal jammers in those examination rooms

In the annual college entrance examination and entrance examination, major operators will issue a warm reminder: In order to ensure the smooth flow of signals around the campus, the operators have arranged in advance for communication engineers to test the entrances and exits of each test center and the rest area of ​​the parents accompanying the test, and conduct tests on nearby base stations. Software and hardware expansion to ensure the communication needs of parents in the test area during the test. Except that the signal is blocked during the exam, we have done our best to ensure that your communication is smooth. Every year in the college entrance examination, in order to prevent exam fraud, all communication signals in the examination room will be shielded. There are cell phone jammer in the exam room. Common signal jammers: At the same time, there is a radio monitor outside the exam room that can help fix those frequency bands that the mobile phone jammer can’t take care of. Electromagnetic wave signals, real-time monitoring of radio wave signals from unknown sources.

The working principle of the signal jammer used in the college entrance examination is to obliterate the useful electromagnetic wave signal in a large number of useless signals. Under normal circumstances, when we use a mobile phone, the mobile phone is first connected to the carrier’s base station, and the radio wave signals sent by the two parties come and go. However, when the jammer is turned on, gongs and drums will be beaten around the mobile phone, sending out a noise radio wave signal that is many times larger than the received base station signal power. The mobile phone can’t hear what the base station is talking about and cannot receive the base station’s signals normally. The connection was severed. Whether calling, texting, or other various functions, they are all in a paralyzed state.

jammer signal device Powerful

This is why the signal jammer affects the call and Internet access of mobile phone users around the examination room. The working principle of the jammer is as follows: in a certain frequency range, the mobile phone and the base station are connected by radio waves, and the data and sound transmission is completed with a certain baud rate and modulation method. Aiming at the above-mentioned communication principle, the jammer scans from the low end frequency of the forward channel to the high end at a certain speed during the working process. The scanning speed can cause garbled interference in the message signal received by the mobile phone, and 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. The mobile phone is manifested as a search network, no signal, no service system and other phenomena. Eventually, the mobile phone has no signal and cannot receive text messages or calls.

The current mobile phone signal 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.

Prevent children from indulging in mobile phones-how to choose home mobile phone signal jammer

With the advent of summer vacation, primary and secondary schools all over the country began to have holidays, but the tests for parents have come one after another-what should I do if children are addicted to cell phone chat, what should they do if they don’t have a good rest and play mobile games in the middle of the night, children hold their phones all day and are indifferent to other things How to do? These are the questions I have received the most recently.

When encountering such consultations, I generally recommend parents to communicate with their children so that they can learn to self-discipline. However, some parents also reflect the actual difficulties and hope to purchase home cell phone signal jammer to interfere with/cut off cell phone signals. Yesterday, an older brother hoped that his younger sister could concentrate on studying. He sacrificed the fun of playing with mobile phones and bought a cell phone signal jammer. My heart is still very warm!

handheld signal blocker

Then let’s talk about how to choose a mobile phone signal jammer at home (to prevent students from indulging in mobile phones)?

Shielding range: The shielding range is proportional to the power. For low-power signal jammers, one is enough to install in a room, and the shielding area is about 20 square meters; while for high-power jammers, the shielding distance can reach 100-400 square meters. The local field strength is different or whether you need to go through the wall to decide (some parents will choose to install the mobile phone signal jammer in their own room).

Signal strength: The distance between the surroundings and the signal base station and now many cell buildings have signal base stations or signal amplifiers. According to the shielded frequency band: Before purchasing, you need to know which signals you want to shield. The ordinary mobile phone signal (2345G) can be selectively shielded. If you only shield 2G or only 345G, this can be adjusted before leaving the factory. There are 2.4GWIFI, 5.8GWIFI, VHF, UHF and other frequency bands. Here we need to explain the function of each signal frequency band. Simply put, 2G is the frequency band for making phone calls, and 2345G is the frequency band for mobile phones to access the Internet, so it depends on the specific shielding frequency band requirements.

Appearance: The appearance of the mobile phone signal jammer can be divided into an external antenna and an internal antenna. In general, the external antenna is externally installed and stretches out, so it takes up more space than the internal antenna. The volume is larger; because of the antenna extending outward, the effect of the external antenna is more stable.

Power supply: Generally, the power supply of the jamming device is the built-in lithium battery. After the power is used up, the power adapter can be used for charging; the desktop examination room uses 220V voltage power supply, and the car-mounted vehicle generally uses 12-36V voltage power supply.

What are the advantages and application prospects of the mini wifi signal jammer?

I want to cut off the WiFi and Bluetooth signal and no one else knows that you cut off the signal. Any good idea will help to achieve the goal? Now the answer is of course to only use the hidden mini Bluetooth jammer. It’s just here. It can provide you with an unmissable opportunity to obtain high-quality mini wifi jammer.

Although there are many handheld WiFi bluetooth signal jammers on the market that can block WiFi bluetooth signals, it seems not so easy to find a hidden style, but only in this channel you will gain access. Take a look at the hidden mini Bluetooth jammer, it has the features you need. Then, just look at the details of this “mini handheld WiFi jammer with built-in antenna” as shown below.

portable gps jammers

This mini jammer is only used to interfere with 2400-2500MHz WiFi Bluetooth signals, with an output power of 0.5W. The output power of this handheld WiFi Bluetooth signal blocker is not strong, but due to the use of ultra-high frequency and micro-power interference technology and high efficiency, the effective interference range of this hidden mini Bluetooth jammer can reach 20 meters.

And according to the palm size design, whether you want to hold the hidden mini Bluetooth jammer or just put it in your pocket, you can easily reach your goal. In addition, because the car charger is also equipped with this hidden mini Bluetooth jammer, it can also be charged when people are driving.

The security of important meetings is inseparable from the strong support of mobile phone signal jammers

Cell phone jammer maintains a good environment for important meetings

We are tired of being interrupted, especially in important places, I am tired of ringing the phone. When the leader presided over an important meeting and was interrupted by the ringing of his cell phone, he was very angry. In order to make the meeting have a good communication environment, use mobile phone jammers in the meeting room.

With the popularity of mobile phones, mobile phone ringtones make people more tired, especially in some quiet public places. In many places, the use of mobile phones is prohibited, because the use of mobile phones will affect others and affect their rest or work. Although there are clear instructions to prohibit the use of mobile phones, many people use them in these places, such as gas stations, because it is dangerous to use mobile phones at gas stations and may cause an explosion.

We should know that important national conferences will last for many days. The content of the meeting must be kept strictly confidential, cannot be interrupted by the outside world, and the use of mobile phones is prohibited. This is not just a national conference, but also many company meetings have adopted cell phone barriers, prohibiting the use of cell phones and gradually installing cell phone barriers. What do you think about the rationality of installing mobile phone jammers in the office?

Not only is the use of mobile phones prohibited at gas stations, but many public places have also begun to prohibit the use of mobile phones. It may also be banned in certain private places. We have heard of the use of cell phone jammers in schools and cell phone jammers in prisons to disable cell phone signals and protect prison safety. How about the meeting room? Have you seen any examples of this? As people become more and more dependent on mobile phones, many companies have begun to install mobile phone jammers in the meeting rooms. And adjust the mobile phone interference range in the conference room. This will not affect the normal use of external mobile phones, and will provide a quiet meeting environment for the meeting.

If the ringing of the mobile phone interrupts the speaker’s thinking in an important meeting, it will make him feel uneasy and distract the meeting participants. It’s impolite to ring an important mobile phone in the meeting room. Therefore, before the start of many meetings, it prompts that the mobile phone will be turned off or set to mute. Many companies do not allow mobile phones to participate in meetings. This is visible in mobile phones in the Internet age The use of will become more and more clear, prohibiting supervision.

portable wireless signal jammers

If you are part of a meeting, how often do you hear your cell phone ringing during the meeting? I think you will be as angry as I am, dissatisfied with this behavior, and even scold the owner of the phone. This is an unhappy ending, not what we want to see. In order to avoid such unpleasant results, it is necessary to use a mobile phone shield in the meeting room. There are many advantages to using it in the meeting room. As you can see, uncivilized phenomena are prohibited. It not only prohibits the use of mobile phone ringtones, but also prohibits the use of mobile phones during this period.

If you are a boss and you often need to participate in meetings, the meeting always has mobile phones ringing or someone looking at the mobile phone, then you can install a mobile phone signal jammer to prohibit them from using their mobile phones.

The current situation and misunderstandings of using mobile phone jammers in prisons

Cell phone jammer Current situation:
1. The area that should be shielded is not strictly shielded, which is costly and laborious and has no actual effect;
2. The area that should not be shielded is seriously interfered, complained and cannot be used normally;
3. There is a gap between overly biased detection and pseudo base station technology, ideals and reality, and there are no real successful cases in China at present;

portable cell phone signal jammer

2. Misunderstanding:

①Using directional antenna can avoid interference
1. There is a certain transmitted signal strength outside the directional angle of the directional antenna, but it is much lower than the main lobe, not completely directional;
2. The reflection of the building will still cause external interference;
3. The frequency drift of the host computer seriously affects the base station and causes external interference;
4. TD full-time shielding interference must exist.

②The greater the power, the better
1. Inaccurate host frequency output, frequency drift, too wide bandwidth, waste of power, and interfered base station;
2. The simple frequency sweeping power suppression method has low shielding efficiency and large radiation;
3. The power is false standard, exaggerated publicity, and the nominal power loses its reference value;
4. Power is the foundation and technology is the key. It is better to find good methods and skills to fight for power;

③ The radiation of high power jammer is large, and the radiation of low-power is small
1. The high-power uses an outdoor antenna, which has a long operating distance, large shielding coverage, and uniform shielding signals, but radiation is minimal;
2. If the low-power equipment does not use multiple antennas for long-distance shielding, but is arranged in a centralized manner or 5 antennas are used together, the radiation power will be greater than 10 microwatts/square centimeter, and the short-distance radiation will definitely exceed the standard;