What are the advantages of wifi signal jammer?

The development of smart phone wireless networks has a great effect on increasing the speed of development. Mobile phones can solve network problems. Mobile phones play a more important role in people’s lives, mobile communications and mobile Internet, and other aspects. Because of this, it causes a lot of problems, especially in the network, children are addicted to the Internet, which is mainly due to the wifi network. As a result, many gradually began to install mobile phone wireless jammer devices to block the network in order to control the children’s online time.

High tech Phone Wifi interceptor

Although wireless networks are convenient for people to access the Internet, the problems caused by this cannot be ignored. This is not only a problem of accessing the network, but also a problem of network security. In order to maintain a good network environment, many places have begun to install this desktop wifi shield to protect the network security in some places and prevent excessive use of the network. This equipment has been widely used in various countries and regions in the world, and is typical of schools, prisons, libraries, reading rooms and gas stations.

It is necessary to use a Wifi blocker. On the one hand, it can ensure the security of the network. On the other hand, it can also control the time that children use the Internet. Don’t indulge in the virtual world. It is very serious to harm their body and mind. In addition, the radiation of the wifi transmitter will affect Human health is not suitable for long-term use, you can turn on the wifi shield to block the wifi signal.

In general, keeping all shields in an open state for many years is not conducive to energy conservation, environmental protection, equipment maintenance, and shortening the service life of equipment (such as factory areas, canteens, warehouses, etc., are unmanned at night, and there is no need to place these locations. The mobile phone jammer runs continuously 24 hours a day).

What is the reason that the signal jammer does not work or the effect is poor?

There are many jammers on the market today, but many customers do not know how to use them, so the jammers often do not work or have poor results. Do you know what is causing this phenomenon? Together with signal interference shielding Let’s find out about the device manufacturer Chengdu Saiyue Communication:

1. You must order a suitable shielding device according to your needs, which is more important

①If you want to block mobile phones, then you have to choose 2G 3G 4G full frequency signal jammer. At this point, you must consider whether you want to add additional functions such as GPS (satellite positioning) or WIFI (wireless Internet access)!

②Choose the right power supply: portable jammers have low power, easy to heat, desktop jammers have high power and good heat dissipation! The shielding range of desktop jammers is longer!

③If you want to block the GPS track, you need to choose a two-in-one jammer (low-cost 2G GPS jammer)) at least! Because when you only use the mini GPS jammer to block the GPS, it will be automatically activated by the built-in SIM card Realize GPRS GSM positioning.

16 Antennas Signal blocker

2. After receiving the portable jammer with battery (desktop jammer without battery), it must be fully charged within 6-10 hours;

3. All antennas must be installed according to the markings (1-1 2-2 3-3 4-4 5-5 6-6 7-7 8-8 or GSM to GSM GPS to GPS…). More importantly, don’t open the shield without installing the antenna!

4. Interference range: position signal strength <= -75dBm. The interference distance will vary according to the signal strength and location. If you are close to the signal base station, the effect of the jammer will be very poor!

Will it affect WIFI when using cell phone signal jammer?

In our lives, we often use cell phone signal jammer, and when we use mobile phone signal jammers, it is inevitable that there will be such a question: Will using mobile phone signal jammers block wifi? Let’s learn about it with Jammer-mart:

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The shielding frequency band of mobile phone signal jammer is generally:

CDMA frequency band transmission frequency 869-894MHz

GSM frequency band transmission frequency 925-960MHz

DCS frequency band transmission frequency 1805-1880MHz

PHS frequency band transmission frequency 1900-1990MHz

WIFI transmission frequency 2400-2485MHZ

4G transmit frequency 2300-2390MHZ

4G transmit frequency 2555-2565MHZ

If the jammer contains 2400-2485MHZ, then 2.4G wifi will be shielded. If the jammer contains 5.8G shielding frequency band, it will shield 5.8G wifi frequency band. Generally, the jammer does not include 5.8G Wifi frequency band. Can not shield the 5.8G wifi frequency band.

The technical solution for seamless coverage of cell phone signal jammer in the whole prison area

1. Jammer-mart provides the following shielding solutions for a prison:
1. For the shielding of the internal area of ​​the building, the distance between residents (schools) and other public facilities in the area where the building is located should be considered, and the distance and signal strength of the surrounding communication rack base stations should also be referred to, so as not to affect the mobile phone signals in the surrounding public facilities. For normal communication, our company selects MDPB-25W indoor host product for the shielding in the building to carry out the network shielding of the indoor antenna mode.
2. For the requirement of shielding all in the selected area, our company chooses outdoor large-scale electronic jammer device to cover the inward coverage of the wall cloth to ensure the shielding of mobile phone signals in all areas. At the same time, for the blind spots and leakage points that may exist in the room, use MDPB-5E is installed with patch point.

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Installation Notes:
(1) On behalf of MDPB-25W indoor host, on behalf of indoor antenna line.
(2) No. 1-3 workshops, two MDPB-25W indoor mainframes are used inside, and indoor dedicated distributed antennas are used to realize shielding in the workshops.
(3) The surface price of No. 4-6 workshops is relatively small, just install one MDPB-25W indoor.
(4) The angle of the indoor distributed antenna is adjustable, which can fully guarantee the realization of the shielding effect.
(5) The interior of the factory building, such as the bathroom, is complicated, and a small amount of small shielding MDPB-5E can be used to make up points in a separate room.

What kind of signal jammer is good for the conference room

As we all know, the conference room is a very serious place and cannot be affected by the external environment. For example, corporate strategy meetings, public institution department meetings, public security, prosecutorial and judicial department meetings and other government department meetings. The progress of the meeting has a great impact. At this time, a mobile phone signal jammer is needed, and a mobile phone signal jammer is arranged in the meeting room to shield the mobile phone signal. The mobile phone has no signal and naturally cannot communicate with the outside world.

Desktop high-power electronic jammer

But how to choose a cell phone signal jammer device, Shenzhou Mingda company provides you with high-quality mobile phone signal shielding solutions:

1. According to the size of the meeting room. For example, the model of shielding device used in a meeting room of 100 square meters and 200 square meters is completely different.

2. According to the usage time of mobile phone signal jammer in the meeting room. According to our conventional understanding, if the frequency and time of use of the signal jammer is 5 hours a week, commercial machines can be used at a relatively low price. If the signal jammer is used for more than 20 hours a week, use an industrial machine, which is relatively expensive.

3. According to the intensity of the field signal used by the signal jammer. In the category of conference rooms, it is not easy to judge. We usually judge based on the absence of signal amplifiers in the office, whether there is an operator base station within 300 meters, and the signal strength of the usual mobile phone. If the mobile phone signal is strong, you need to use it. A slightly larger power shield.

In short, the purpose of the mobile phone signal jammer to shield the mobile phone signal is a comprehensive factor, including the consideration factors listed above.

Talk about the summary of experience when installing jammers in prisons

A. Most prisons have guard towers and observation towers to protect prisoners. The height of the towers is mostly higher than the prison buildings. If the antenna height is higher than the tallest building, it will be easier to block cellular phone signals in the air. Therefore, it is very easy and more protective to install the prison shield on the observation tower. Moreover, engineering costs can be greatly saved. The installation process can be improved.

B. If there is no prison guard tower or its use is not allowed, we suggest that you can choose a fence. If the height of the wall is higher than the tallest building, solution a can be used. If the wall is lower than the tallest building, a fixing bracket must be installed on the wall. The height of the support must be 3 to 5 meters higher than the tallest building in the prison. The higher it is, the easier it is to install the antenna. In this way, the construction cost will be higher than solution a. If it is a larger prison, more shields must be installed to adopt solution a and solution b. We recommend installing wireless jammer with omnidirectional antennas on some buildings in the middle of the prison to increase the shielding range and reduce the amount of interference.

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C. If all guard towers, prison buildings and fences in the prison are not allowed, we must recommend the construction of some fixed cylindrical towers or signal towers. Engineering costs will be more difficult and expensive. The whole building will be much slower. To some extent, once other solutions cannot be adopted, this is our last choice.

Tip: If you use plan B and plan C, please pay attention to install lightning rods. The height of the lightning rod must be 2M higher than the antenna. jammer-mart has many years of experience in the installation of signal jammers in prisons. It is also very experienced in projects in other places. At the same time, you can choose the jammer products that suit you on our website.

How to shield a base station within 800M

As we all know, the base station is to enhance the signal, and the shield is to shield the signal. The two conflicts with each other. This is a headache for many government agencies that need a shield. Today, I will show you how a prison with base stations around is fully shielded through our scheme.

It is well known that the prison cannot have a signal, but there is a base station within 800 meters of the prison. The prison has tried many electronic jammer devices, but the effect is not satisfactory. There are always signals in many places, which brings great risks to the prison. Our technicians personally took the equipment to the site to investigate the signal strength and site conditions.

desktop signal blocker

(1) There are many residents around the prison, especially in the southeast direction. The shielding project cannot affect the normal communication of the surrounding residents. Therefore, the selection of the shielding project and the design plan require precise and accurate shielding, which is difficult to design.
(2) The new prison administration office building near the factory area and the old prison administration office building in the living area belong to the police office area and cannot be shielded in principle
(3) There is a large communication tower at the location of the prison office building, which will inevitably cause strong mobile phone signal strength in the entire supervision area, and the field strength value is much higher than that of Canggu. The design of the shielding project is difficult.
(4) There is also a communication tower about 800 meters northwest, which will superimpose the signal strength of mobile phones in the supervision area.

Why use signal jammers in educational institutions?

The mobile phone is undoubtedly a very convenient tool. However, depending on the time and place of use, normal public order may also be hindered. Such as libraries, classrooms, etc.

There is no doubt that smartphones have extraordinary functions that can theoretically promote student learning. But the fact is that despite the best efforts of parents and teachers, children still mainly use mobile phones to access digital entertainment.

Needless to say, mobile phones should not be used in classrooms. Mobile phones are not allowed in the classroom, but teachers don’t want to enforce the rules. They often complain that I should find a solution so that they don’t have to argue with students. A friend of mine used to be a teacher. His students used to send text messages in class and later bought a portable cell phone jammer. Then all the students felt that their phones could not receive any signals.

The principal of high school purchases cell phone signal jammer from dealers to prevent students from using cell phones in school in violation of school district policy. First, he may be tired of abusing mobile phones on campus, and his decision may be due to cases where the learning environment he tried to create was seriously damaged. However, it is frustrating that education efforts, deterrence strategies, formal policies, and vigilant supervision and sanctions have not sufficiently reduced the problem.

smartphone signal blocker

The school will restrict the use of students’ mobile phones during class, so as to clearly promote students’ academic success and safety. At present, most schools will let teachers install signal jammers in their classrooms. But this piecemeal approach leaves teachers with insufficient support to cope with difficult and potentially unsafe tasks that provoke students to restrict destructive phone use.

Some people think that mobile phones should not be used during learning because children will not be fully focused on their work. Children can go online to play games, but it does not help their learning. Children will be distracted by the ringtones on their phones or the flashes of other children taking pictures with their phones. Mobile phones should not be allowed to go to school during the study period.

In addition to sending text messages, jammers can also effectively prevent students from cheating on their mobile phones. Cheating is always repeated. Facing this situation, educators must use jammers to prevent cheating.

Now not only educational institutions in China are using mobile phone signal jammers, more and more countries are introducing signal jammers into educational institutions.

Good reasons for using cell phone jammers in cinemas and theaters

Usually, when entering a movie theater or theater, turning off the phone is the most basic ceremony. However, in any case, some people will ignore these rituals and rules. Yes, when you watch a movie, you are always interrupted.

Try to convince people to observe the most basic social considerations in the movie. If you have visited a theater recently, you know they are often overlooked, so other methods have been explored to enforce theater ethics.

For new and popular movies, the theater may have a separate auditorium to block cell phone use, but the auditorium does not block the signal. This is more like the tradition of non-smoking areas in restaurants. Although the use of mobile phones is still discouraged in closed auditoriums, those who choose to watch movies will have to deal with occasional distractions.

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Why use a cell phone jammer?

Hollywood film blogger Alex Billington (Alex Billington) is one of many people who rejoice in the rapid retreat of AMC. “Texting in the theater completely ruined the movie,” he said. “This is something we must fight on the social and cultural level.”

In 2014, a dispute between two men texting at a cinema in Florida eventually led to a fatal shooting. Although this is an extreme situation, most people would agree that the illuminated cell phone screen and finger taps can be annoying.

Phone calls are not just a hassle for movie theaters. When Benedict Cumberbatch played Hamlet in Barbican, he finally added a monologue, lamenting the tragedy of cell phone cameras and urging his fans to put down their phones. Some performers take the problem of disruptive technology completely in their own hands.

Have these people never participated in a movie so fully, or felt so deeply involved in a story that when something sounds or shakes or lights up a few seats, they don’t feel a momentary resentment, Smashed this spell? The problem started with a lack of respect for seat partners, or lack of respect for the entertainment media itself?

Of course, the reality is that all of these are important. In an era when we are forever consumed by our personal technology, the theater can and should be our last public refuge, and we can only be affected in movies and films. If that vision comes from a nostalgic or naive place, then this place is still a space for all of us, sitting proudly and provocatively in the dark.

Personally, I think theaters should be allowed to install cell phone signal jammer and there are clear signs that they are being used. If people don’t like this, they are free to spend money elsewhere. If all theaters eventually use the technology, then these people can choose not to go to the movies.

USS Boxer used electronic interference to take out Iranian drones, Pentagon sources say amphibious assault ship

The USS Boxer deployed electronic measures to dismantle a drone the US says was operated by the Iranian military, according to Pentagon sources familiar with the situation. The Navy says the drone was wrecked on the Strait of Hormuz on Thursday after it approached the ship and repeated warnings went unheeded.

Iran has denied the US claims, stating that all of its drones will be considered – and that the US ship may have accidentally shot down one of its own military drones.

U.S. Department of Defense officials, who were not empowered to speak publicly, said the drone was one of several threats to the boxer as he drove through the narrow waterway near the Iranian coast. It is said that at least one Iranian helicopter and several fast boats drove towards the ship on Thursday morning. The actions prompted the boxer to send a helicopter, which then flew side by side with the Iranian plane to repel him.

The boats eventually followed radio warnings to break contact, but the drone headed for the boxer instead of turning, the sources say. His presence was seen as a potential threat to flight operations aboard the amphibious assault ship, which carries a number of helicopters, as well as Osprey tiltrotor aircraft and a handful of fighter jets.

There were also concerns that the drone could pose a direct threat: in recent months, Iran-backed Houthi rebels have been using drones to drop explosives on targets in both Yemen and Saudi Arabia. According to a Pentagon source, the drone was unarmed in Thursday’s encounter.

The first US statements about the incident with the boxer did not contain any detailed information about the crash of the drone. On Friday, a Pentagon official clarified that the boxer was using electronic jammer measures to turn off the drone. The officer did not provide details in order not to disclose information about the ship’s capabilities.

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The news site Military.com states that a new Marine Corps anti-drone system was responsible for the Iranian drone crash, although the military did not confirm the report. USNI News notes that the Navy previously announced that the Marines were operating the jamming system on the deck of a US ship. USNI News described the weapon as one of a new series of “non-kinetic systems” that can cause a drone to crash.

President Trump first announced the crash on Thursday afternoon, saying “The drone was destroyed immediately” after closing within about 1,000 meters of the boxer and ignoring the request to resign.

Shortly after Trump’s testimony, Pentagon spokesman Jonathan Hoffman gave further details, saying a drone approached the Navy ship at around 10 a.m. local time while the ship was in international waters and on an “inbound road transit” von Hormuz “sailed. “”

However, on Friday, Trump said the U.S. ship shot down the drone, contradicting Pentagon officials’ report that the boxer was using jamming features. “No doubt no,” Trump said in the Oval Office, according to a White House pool report. He added, “We shot it down.”

When asked if he was concerned about the possibility of a major clash with Iran in the Strait of Hormuz, the pool report quoted Trump as saying, “No, not at all. … We hope they don’t do anything stupid about them. ” When they do that, they pay a price no one has ever paid before. ”

Also on Friday, a senior Trump administration official said the U.S. government had evidence that the boxer destroyed the drone and said more information about the shutdown would come from the Pentagon.

“We have very clear evidence, the Department of Defense issued its statement on the boxer’s actions,” the official told reporters on Friday. “The Iranians don’t have a great story with the truth. We are very confident in the president’s announcement.”

When asked if the Trump administration would take further action against Iran, the official said the US was ready to defend itself.

“It was your drone that approached our ship,” said the officer, adding, “If you keep doing this. If you fly too close to our ships, you will be shot down.”

US military officials say Iranian helicopters and drones often flew near US ships as they crossed the Strait of Hormuz between the Persian Gulf and the Gulf of Oman.

In an incident that began in August 2017, according to these officials, a US ship was harassed by an Iranian drone that flew near the ship during night operations. No shots were fired, but the encounter was classified as “clearly unsafe”.