Category: Tag Positive

There is an old saying: Every family has problems, especially between parents and children. They never seem to be able to live peacefully, and communication barriers are becoming increasingly apparent. There are many reasons. Especially with the advent of mobile phones, parent-child communication has become increasingly unpleasant and difficult. When they were young, they preferred to play games on their smartphones rather than listen to your suggestions. This happens not only in your home, but also in school. Mobile phone radiation can seriously affect children’s health, including vision. Therefore, many homes have installed a WiFi jammer to control the time children use the phone, which is very positive for families

Why the actual working range of jammers is different

Here we are going to talk about the scope of work of whining, which is one of the most controversial equipment issues on the Internet and is the concern of most of the customers.

We know that every storage device has a different restricted area, which has already been mentioned. In general, the higher the force, the longer the stagnation radius. And the higher the force, the bigger the size of the WiFi jammer, and they also need a cooling system. For this reason, desktop jammers generally have a wider range of interference than portable jammers. So before you buy a jammer, you need to determine the type of whine you will need and the storage area you want. Both should be considered, then you can get what you want.

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In the introduction of each interferer, we emphasized that the interference range of the jammer is only used as a reference, please anticipate the current situation. Jamming range depends on the local signal strength. Here we will try to explain why the manufacturer’s workspace often differs from the actual fact.

At the beginning, when the woe is made, it is tested. There are many necessary tests, such as battery life, transmission frequency, etc., including test congestion radius. The manufacturer always thinks that the test results are more effective than the actual range, as these devices are often tested in empty fields. They know that buildings and various concrete structures can impede the transmission of signals. And most of us live in big cities, we are surrounded by skyscrapers. While the local cell phone signal strength is also a factor of the impact. So don’t be surprised if your clogged device can’t block the phone within 30 meters of you.

Of course, you don’t have to worry about the woes that don’t suit your needs. There are many different types of signal jammers here. You can get what you want according to your situation. Like a general portable jammer, they have a very decent work area, especially if your main goal is to stop people around. I think they got to 5 meters which is enough, especially now that you are on the bus you want people to stop for a minute or two. Such a device will definitely help you.

Hidden WiFi Bluetooth 3G 4G Cell Phone Signal Jammer

Everyone knows that stress can lead to mental deterioration that can endanger their health. It is said that relaxation is the key to a healthy mind and body. Learn to relax, learn to use 4G cell phone signal interference, get away from 4G phone, open your health and good life.

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Desktop WiFi Bluetooth 3G Cell Phone Signal Jammer with Hidden 4G Phone.

As we all know, stress is part of everyday life and cannot be avoided. As the pace of modern life continues to accelerate, we can always feel the pressure from morning to night. It’s hard to slow down. Hence, stress and life are closely related in a highly competitive society. How to Maintain Good Condition? Let me tell you, calmly restore your life, turn off your computer and drop your phone. You will find that the pressure disappears. How it goes? Buy a hidden wifi bluetooth 3G 4G cell phone jammer from this professional manufacturer www.jammer-mart.com and you will fall in love with peace.

However, different people have different views about stress. Some people think that stress is not a bad thing. In her view, a certain amount of stress is important for motivation and life. Others think stress can lead to mental decline and harm their health. According to them, relaxation is the key to a healthy mind and body. Learn to relax, learn to use 4G cell phone signal interference, stay away from 4G cell phones, for your health and a better life.

Desktop wifi bluetooth jammer. And according to the specific situation, the interference distance is up to 15 meters signal strength Interruption GSM GSM DCS PCS 3G WiFi Bluetooth 4G signal At the same time, it is really powerful and versatile to protect your rest of life and meet all your interruption needs. If you feel that the nearby cellphone is disturbing the peace and quiet you need, then you can turn the button on and legally return to the right place.

Common questions and answers about signal interference

Can someone send me a text message when the phone is blocked?

After the mobile phone is blocked, the text messages sent by others will not be received, nor will it be possible to make and receive calls. After unblocking, that is, the cell phone jammer is turned off or you leave the area where the phone signal jammer works. If it is a text message sent to you by someone else on the same day, you will receive it. If it is earlier, such as yesterday or earlier, this It depends on whether the SMS service of your mobile communication service provider has this function.

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Similarly, if you are blocked by your mobile phone, after someone dials your call, if your mobile phone is activated with Caller or similar services, after the signal is restored, you will receive a short message reminder of missed calls.

Can smartphones be immune to the influence of mobile phone jammers?

There is no way. The unshielded cell phone has nothing to do with whether the cell phone is smart or not.
The frequency of GSM mobile phone is 900MHz/1800MHz, CDMA is 800MHz, PHS is 1900MHz, mobile phone signal jammer usually shields the frequency interference of these four frequency bands, if you have a way to keep the phone out of this frequency, you can I don’t like jammer interference, so there is no way, because if the mobile phone is not within this frequency range, it is not a mobile phone (including PHS).

Does the jammer consume a lot of mobile phone batteries?

Mobile phone jammers consume a lot of battery for most mobile phones. Since the mobile phone jammer is turned on, the signal between the mobile phone and the base station will be shielded. Actually, it is interfered and cannot form normal communication with the base station. Then, many mobile phones have this function: when there is no signal, the mobile phone must be very Efforts to search for the signal, which leads to a lot more power consumption than the normal standby state!

What are the characteristics of a 3-antenna 5-band handheld GPS mobile phone jammer?

In such a modern society, the use of GPS and cell phone signal tracking devices has become a common phenomenon in our daily lives. In order to prevent your life and privacy, and avoid being tracked by GPS and cell phone signal tracking systems, the ideal way to solve this problem is to have this kind of equipment to lock its working ability. This 3-antenna 5-band handheld GPS cell phone jammer is the good product you are looking for.

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As people’s living standards improve, most people pay more and more attention to their lives and privacy. As more and more signal tracking devices enter modern society, we must take action to compete with these tracking devices. This GPS cell phone jammer can help you and can be a good assistant. In order to enjoy a high-quality life, all types of jammers are an indispensable part of life. We use jammers to protect our privacy and protect our lives from the interference of such a modern society.

First of all, this handheld GPS mobile phone signal jammer has strong interference capabilities. It has 3 antennas but can cut off 5 frequency bands. The purpose is to cut off GPS and CDMA GSM DCS PCS signals at the same time. The 10-meter interference radius depends on the signal strength in a given area. This mini handheld mobile and GPS jammer can not only block cell phone signals, but also GPS signals. Therefore, you can enjoy a quiet life, and at the same time, you can enjoy a high-quality life without being tracked by others. These jammers can also protect our family and friends. More importantly, the mini portable design, you can use the mini compact design as you want, this mobile phone and GPS signal jammer bring more convenience to our daily life. You can take it to any place you want. You can use it at any time. In addition, this 5-band handheld jammer can also create a peaceful environment for you at the same time, just use it, and the mobile phone will lose the function of sending messages and making calls in the distance.

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.

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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.

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.

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.

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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.

Schools and prisons use mobile phone signal jammers to be safety-oriented

Schools and prisons should follow these three principles when using cell phone jammers

Radio management

The use of mobile phone signal jammers should not be exchanged at the expense of public mobile communications

Among those who use cell phone jammer, some are to prevent cheating in exams, and some are for quietness of the meeting or confidentiality of meeting information. These are all for good wishes and purposes. But there are also for their own benefit. For example, the owner of a public phone may use a jammer to interfere with the mobile communication base station near his business location, so that people working near the public phone operated by him can use the mobile phone instead of working Public telephone calls increase their economic income. In addition, mobile communication operators may also use shielding devices to harm each other’s interests, so that they can gain advantages in certain local competitions in the same industry. In addition, the mobile phone signal jammer is also easy to add software, becoming a veritable eavesdropping

The above list is the purpose of people using mobile phone signal jammers, but no matter what the purpose is, they should not be exchanged at the expense of public mobile communications. In fact, according to research, it is possible to install mobile phone signal jammers without affecting the normal use of public mobile communications. There are three reasons that cause the mobile phone signal jammer to disturb the mobile communication base station signal:

First, users of mobile phone signal jammers did not take into account the communication needs of outsiders at all, and the target was wrong. The mobile phone communication of a small group of people (such as examinees) should be restricted, but the target was expanded to other ordinary people around.

Second, improper use, because the cell phone signal jammer is installed in an improper position or its transmission power is set too large, it should be controlled within a small range but not properly controlled.

Third, the purchased cell phone signal jammer does not meet the approved standards for radio equipment, the power exceeds the standard, or is a low-quality and substandard product. Finding the reason, in order to overcome its impact on mobile communication signals, it is actually very simple: first, use standard products produced by regular manufacturers, secondly, choose the installation location and direction of action, and thirdly set appropriate transmission power. , It is enough to limit the transmitted signal to a small enclosed area. As long as the above three points are achieved, its impact on nearby mobile communication base stations can be minimized.

Improper application of mobile phone signal jammers in schools and prisons may cause unnecessary harm to the human body

Theoretical analysis shows that when the mobile phone signal jammer is working, if the transmission power is too large due to improper setting, in a small confined space such as meeting rooms and classrooms, electromagnetic waves are superimposed in a small space and pass through the walls that are originally separated from the outside. Multiple reflections from the ceiling and the ground will cause people in the room to be exposed to serious electromagnetic pollution. According to the survey, the college entrance examination and the high school entrance examination are the occasions where mobile phone signal jammers are used the most. In some examination rooms where mobile phone signal jammers are used, some parties (the college entrance examination inspectors, examinees and teachers) are irritable and unable to concentrate. Individual examinees Even headache symptoms appear. Various signs indicate that if the transmission power of the mobile phone signal jammer is turned on too large, it will seriously affect the normal thinking of candidates in the examination room.

As we all know, the characteristics of the free propagation of radio waves in the air, mobile phone signal jammers can block mobile communication base station signals in a certain area and achieve their limited purposes, but also harm human health to varying degrees. Therefore, you must use mobile phone signals with caution. Shield.

The functional management department should strengthen supervision and regulate the safe use of mobile phone signal jammers in schools and prisons

Faced with the increasing use of mobile phone signal jammers from all walks of life in the society, functional departments such as the Radio Management and Security Bureau must increase supervision and regulate the use of mobile phone signal jammers

What are the ways to shield GPS signals?

Whether you are locating business assets or monitoring the location of your loved ones, GPS locators have become undeniably reliable. However, users increasingly rely on these things, which makes hackers even more reason to distort the system. Obviously, any potential interference with how these devices work can greatly damage their performance.

GPS monitoring equipment is mainly used for real-time location tracking, used to monitor property and relatives. Over the years, monitoring equipment has been used to complete legal tasks, including rescue tasks, monitoring sex offenders or monitoring parole offenders. In addition, it can also be used to locate and protect convoys. This equipment can help fleet managers protect their vehicles and ensure rapid recovery in the event of their property being stolen, giving the company an opportunity to obtain lower insurance premiums. In fact, these tracking devices have been used to check the whereabouts of spouses in order to understand potential cheating.

For these reasons, people of course need to interfere with GPS to ensure that their devices always work. However, the irony is that GPS monitoring equipment can potentially compromise personal safety, just as it causes safety. If terrorists can obtain important location information of government property, or even if the wife tries to catch her cheating husband, GPS signals can also be useful to disturb things.

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GPS signal jamming equipment and other signal jammer

Different methods of confounding or interrupting GPS signals will also depend on the type of surveillance equipment used. The most direct way to avoid being stalked is to destroy the GPS device and ensure that it does not rejuvenate. But if the intention is to tamper with it secretly without knowing the installer, it is easy to obstruct or weaken the transmission of the tracking device by using these instruments:

1.Metal shield

This is a cheaper option. Just encapsulate the tracking device with any metal covering (such as brass net or lead camera film protective film). The thieves allegedly used refrigerated trucks to transport vehicles equipped with GPS tracking devices to avoid being tracked.

2. GPS jammer

GPS jammer is primarily sold online. Inserting it into the 12v adapter in the vehicle can now damage GPS radio signals within a certain range.

3. Mobile phone signal jammer

This device is a mobile phone scrambler, which means it can avoid mobile phone use. If an automatic tracking device is used, this scrambler will prevent the wireless tracking device from sending real-time location updates.

The use of mobile phone signal jammer in gas station

When the battery of the mobile phone is started, when the bell rings, it can generate enough energy to cause a slight spark, which may cause a fire. Petroleum, chemical, security and other relevant departments have clearly stipulated that gas stations prohibit the use of mobile phones. It has been a long time since the introduction, but the current implementation is not ideal.

The equipment at the gas station is controlled by a computer. The signal from 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 explosion at the gas station. The current mobile phone signal is almost everywhere, and all electrical equipment is surrounded by it. When the mobile phone is not in use, this kind of surrounded signal has minimal interference to other electrical equipment. This is because when the mobile phone is not in use, there is no data exchange between the mobile phone and the base station, and it is impossible to form a sudden change signal. The electrical equipment is surrounded by a relatively stable electromagnetic field, that is, a static electromagnetic field. The interference of this static electromagnetic field to the electrical equipment is almost zero.

When using a mobile phone, there is a data exchange between the mobile phone and the base station, which generates a random mutation signal, which causes a dynamic electromagnetic field to form around the electrical equipment. This dynamic electromagnetic field signal will induce a mutation interference signal, which is easy to Cause dysfunction of electrical equipment. Therefore, the gas station that is a fire-resistant area is not only strictly forbidden to use mobile phones in the station, but it is best not to use mobile phones within two or three meters around the gas station.

At the same time, gas stations should set up obvious signs prohibiting cell phone calls, and widely publicize safety knowledge, so that people understand that calling cell phones in gas stations is undoubtedly walking with the tiger. There have been many fires caused by the use of mobile phones across the country. A gas station in Henan caused an explosion when the driver used his mobile phone while refueling, causing a huge accident involving many deaths and injuries. There are also many fire dangers caused by mobile phones in gas stations in Shenzhen and Chongqing.

The dangers of using mobile phones at gas stations have attracted many attentions. Relevant departments in Beijing, Hubei, Inner Mongolia, Guangdong, Henan, Shandong, Jiangxi, Sichuan, Chongqing and other places have recommended the use of mobile phone signal jammers at gas stations under their jurisdiction. Sinopec and China National Petroleum Corporation have taken the lead in using mobile phone signal jammers at gas stations in some areas. In short, do you understand now? This is why cell phone signal jammers are used in gas stations, oil depots and other places.

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 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.

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When entering the working state, it can automatically form a shielding magnetic field within the specified range, forcibly disable the mobile phone signal, only shield the mobile phone communication signal, and does not interfere with other electronic equipment, which has become its rare advantage , The advent of mobile phone signal jammers may completely solve the harm to users caused by information leakage of communication facilities, allowing people to enjoy the speed and convenience brought by high-tech to mankind while ensuring the safety of their information.

It is mainly used 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.