Category: Tag Wireless

From ancient times to today, security has always been an important aspect, such as military, network and many other fields. In this case, we need to use different types of security tools in different areas, such as WiFi jammers, which can protect the network security.

In order to ensure a safe environment, various safety measures have been taken in different locations and regions. For example, in factories, hotels, schools, and many other places, we can usually see that in many places, maintenance personnel of buildings should register first. All of this is to ensure security. We can see that security plays an important role in different regions and networks. Now, more and more people are accepting wireless network jammer devices.

Install Cell Phone Jammers To Avoid Road Accidents

This is a question you should consider today. You may ask me: why should I worry about this? In response to your question, I would like to say that despite the fact that it doesn’t seem like a problem (for example, in relation to texting while driving), this topic is more and more popular these days. That is why I ask you to think deeply and consider various options. You also provide cell phone signal jammer to choose from.

Powerful signal jammer device

There is no law against texting while walking. But a town called Fort Lee in New Jersey almost passed such a law. Ultimately, the law was not approved and a few state walking safety programs were launched in March, as two fatal pedestrian crashes occurred in Fort Lee within 24 hours of February this year. . In addition, 117 pedestrians were fined for using crosswalks without using or using a cell phone.

Whether you are driving or crossing the road (or using a crosswalk), texting while driving or walking will not only put your life at risk, but the lives of others around you as well. For example, you text when going to the crosswalk, but you don’t see red lights and green cars. You start to cross the road, or you are hit by a car (especially if the driver is also texting and can’t see you), or the driver will apply hard braking and be hit by a car driving behind them. Or realize that he won’t be able to stop in time and is ready to stop his car from hitting you, he will turn to the sidewalk to take more time to rest. And no one knows how it will end … I suggest installing cell phone jammer around traffic lights, in order to eliminate the danger of looking at the phone.

To solve this problem, different countries use different methods. For example, in London, for pedestrians texting while walking, they would see loads on the poles, and when they hit the poles, they wouldn’t take much damage. Does that sound funny? Yep, it’s fun watching someone in that situation, but when you hit that post with your head, it’s definitely not that fun. However, for all pedestrians, including you, there is another option – you can prevent texting while walking and make your life and that of many people around you safer.

Can the mobile phone signal jammer interfere with the base station’s signal?

Cell phone jammers are familiar to everyone, but everyone who has taken a large-scale exam has seen them and put them at the entrance of the exam room. This is not a malicious blocking signal. On the contrary, this is to maintain fairness and provide a fair environment for candidates. However, most of the time, some people doubt whether it will affect the signal radiation of the base station, so that there is no signal in an area.

With the progress of society and the development of high technology, people’s standards are getting higher and higher. Nowadays, mobile phones have become a habit of adults and children. For elementary and middle school students, it is more important to influence what they say. Playing with mobile phones for a long time may affect their eyesight, and more seriously, neglect their studies.

Since the advent of cell phone signal jammer, they have been trusted by examination rooms, schools, prisons and other units. In fact, mobile phone signal jammers are no longer a new thing abroad, and have begun to be sold in the domestic market in recent years. The cell phone signal blocker only interferes with lower cell phone signals, so it will not affect mobile base stations and other electronic devices. Now many elementary and middle school students are holding mobile phones one by one, some are addicted to games, some are addicted to novels, etc. It is even more dangerous for school exams. Baidu has all the answers. If everyone used their mobile phones to plagiarize during the exam, it would violate the purpose and significance of the exam!

Desktop high-power electronic jammer

In the face of mobile phone signal shielding, we should treat it rationally and scientifically. The working principle of the mobile phone signal blocker is to send out a specific signal to wake up, block or interfere with the signal between the mobile phone and the base station, so that the mobile phone has no signal or cannot find the network service, and the mobile phone will send and receive text messages. Unable to recognize the original text message.

In fact, signal jammers generally do not affect the signal of the base station, so there is no need to worry, and no one will consider interfering with other people’s signals.

The mobile phone jammer scans from the low end of the forward channel to the high end at a certain speed during the working process. This scanning speed can cause garbled interference in the message signal received by the mobile phone, causing the mobile phone to fail to detect the normal microwave signal data sent from the base station. In a certain range, the mobile phone cannot be connected to the base station, and the mobile phone appears as a search network, no signal, no service system, etc., and thus cannot be used. The purpose of disabling the mobile phone is achieved. Its operating frequency is: 869~94MHz; 825~ 960MHz; 1805~1880MHz and 1900~l990MHz, etc. The operating frequency bands are CDMA800, GSM900, DCS1800, PCS1900. When the mobile phone leaves the range of the jammer, it can be fully restored to normal use. The electrical signal emitted by the mobile phone jammer is undoubtedly an electromagnetic signal, but this kind of jammer will never have any equipment to communicate with it, and it will never form a sudden change signal. In other words, this signal will always be in a relatively static state. , It will not interfere with other electrical equipment, and it is harmless to the human body.

GPS interference had a serious impact on the war

When the Iraq War broke out in 2003, the Iraqi army used a Russian-made GPS signal jamming system to destroy the US military’s guided weapons system, creating a sensation. South Korean military officials are doing their best to develop countermeasures, fearing that the equipment could cause similar damage to the South and its allies in the event of a war.

GPS jammer is so sensitive that they also cause accidental interference. In one case, a VHF / UHF TV antenna preamplifier in Monterey Bay, California generated three or more interference signals. The signal strength of the preamp is sufficient to push the GPS completely into a radius of 1km above sea level. The authors of the report speculate that similar sources could interfere with aerial GPS receivers within 50 km if transmitted using omnidirectional antennas.

16 Antennas cell phone Signal Jammer

Long-range air-to-ground cruise missiles, including Tomahawk cruise missiles, are also GPS-guided. The advantage of GPS-based weapon systems is that they can accurately attack targets despite bad weather and complex terrain. Their drawback is that even weak signals can easily get stuck.

Seoul told North Korea in a letter issued Monday that since March 31, North Korea has blocked GPS signals in South Korea, threatening the safety of civilian aircraft and ships, and violating international agreements. Told.

South Korea’s UN ambassador, Oh Jun, said electronic mobile phone signal interference signals from five regions of North Korea (Heju, Yang An, Pyongyang, Jin Jiang, and Kaesong) “dangerously affect GPS.”

The South Korean government reported that North Korea had imported about 20 communications and radar jammers from the former Soviet Union. The in-vehicle device was reportedly deployed near the border and interfered with GPS signals within a range of 50 to 100 kilometers.

A few years ago, when satellites were advertised as the only navigation method in the aviation industry from takeoff to landing, former FAA administrator Langhorne Bond painted a dark winter night on the east coast. The weather is below the limit. In that case, terrorist GPS interference could be a “weapon of mass destruction,” he said. The FAA considers this an unfounded guess. However, in a recent report on GPS-dependent ADS-B, DOT inspectors took the issue more seriously and called on the FAA to “work with US intelligence to assess this potential threat.” I did.

Why military jamming technology is needed?

Russia’s accumulated intelligence and electronic warfare tools also include the deployment of Krasukha-4, an advanced electronic warfare system used to destroy radars and aircraft. Sputnik News reported on its presence in Syria, and the country claimed to have discovered a unique GPS jammer system in a video report of a Russian jet at Latakia Syrian Airport. The system and its parabola are shown with a 6-second mark in the video below.

Since the invasion of Iraq in March 2003, a series of active, passive, weekly and powerful saboteurs have arrived in Mesopotamia: Warlock Green, Warlock Red, Warlock Blue, ICE, MICE, SSVJ, MMBJ, Card brand. Dunwood, Juke Box (Symphony) now collectively refer to them as CREW. This is a clumsy acronym for an acronym. The improvised explosive device conducts electronic warfare against the jammer.

As more and more military turmoil floods the theater, the turmoil becomes more and more chaotic. Over the past few months, the Army and Marine Corps have clearly realized the shortcomings of electronic warfare expertise. Major Arch Messi, the commander of the Naval Surface Warfare Center, said: “We put all these boxes here, but people don’t know how to use them.”

This is especially true in Baghdad, where the electromagnetic environment seems to change with the community, the season and the time of day. A Pentagon executive said: “No one knows how much interference will occur on the ground.” This is the interface between the earth and the air at the intersection of the earth and the sky. The Army logistics staff added: “I don’t know that taxi drivers usually make electronic noises, doorbells, garage door openers, and satellite communications because they have not scientifically identified the problem. This is a normal life plan.”

Camouflage portable cell phone jammer

Even for North Koreans, GPS jammer is nothing new, but the latest tests are certainly rare. If there is no ground interference, it may indicate that the device is in the air, but since the FAA only covers airspace, ground interference cannot be ruled out.

In fact, interference may just be a test bed for new anti-jamming technologies that are under development and costly. As the ability to jam GPS every day becomes easier and cheaper, the military is actively developing new systems to enable aircraft, drones, and missiles to withstand jamming signals.

Signal blocker in the toilet

Recently, my colleagues in the unit have found that the problem of toilet access that has plagued everyone for a long time has been solved well. Almost no one will stay in the toilet for a long time and look at their mobile phones. There are a lot of squat pits empty. There is no queuing to go to the toilet.

This was not the case before. If you want to go to the bathroom, you have to wait in line. If you can’t wait, you ran to go to the bathroom. Just because of this, the leader had a headache. He talked about it many times in small meetings. The effect It is not so obvious, and the problem of difficulty in using the toilet has not been fundamentally solved. In order to avoid going to the toilet as much as possible, some colleagues simply solve it at home, drink as little water as possible, and reduce the frequency of going to the toilet.

It’s not that there are fewer squats. The crux of the problem is that now the mobile phone signal is strong. When some people go to the bathroom, they watch or play games with their mobile phones. This squat is for most of the day. It’s a long time, but the people waiting to go to the toilet are different. It is very uncomfortable to hold back.

In order to completely solve this problem, the leader asked everyone to brainstorm. In the end, either lacked operability or was too expensive to be worth doing. There was a person’s idea that attracted the attention of the leaders.

A powerful jammer

This person’s idea is very simple. Install a signal blocker in the toilet. If there is no mobile phone signal or the signal is weak, how can people who go to the toilet squat in the toilet for a long time? The squat will be empty.

So, the leader installed a signal jammer in the toilet just as the person said, and the effect was immediately apparent.

It is much easier to find the key to the problem and catch the bull’s nose.

USDOT is hosting a GPS jamming workshop on December 3rd

The US Department of Transportation is hosting an afternoon workshop on December 3rd on GPS Disruption and Spoofing in the Maritime Environment.

Speakers include Diana Furchtgott-Roth, Assistant Assistant Secretary for Research and Technology; Maersk Lines’ captains; and representatives from the National Security Council, the Maritime Administration, and the US Coast Guard.

While GPS jammer and spoofing are a problem in many areas of transportation and critical infrastructure, it is often most noticeable in maritime transport. This is because the automatic identification system (AIS) for collision avoidance and traffic management for large ships transmits location data based on GPS inputs.

Cigarette Lighter GPS Jammer

These transmissions are received by coastal networks and satellite systems. AIS data is often freely available or easily accessible to the public.

Ships in Russian waters being forged into inland airports, ships in Chinese ports reporting they are inland and circling government buildings, and ships in part of the world broadcasting their location thousands of miles away and in the ocean off Northern California circling, are three of the highest provide examples in recent years.

In 2019, the US Coast Guard raised GPS signal interference as an “urgent problem” for the International Maritime Organization.

In February, President Trump issued an executive order on the responsible use of positioning, navigation and timing. This workshop is part of the federal government’s efforts as part of the mandate to educate the public about vulnerabilities associated with over-reliance on GPA.

The workshop is free, but participants must register. Pre-registration is possible.

Cell phone jammers installed outside Sabarimala Tantri’s office

After 8 a.m., many followers were seen protesting and shouting slogans when the police stopped them to check them out on the way to Sabarimala.

Sabarimala: Kerala police installed cell phone blocker near the Sabarimala Temple on Monday to prevent the Tantri and other shrine officials from interacting with the media and to dissuade live images of it.

portable radio jammer

The move took place when the contingent of the state police deployed around 2,300 workers for the security of the temple ahead of the one-day pilgrimage, which begins at 5 p.m. on Monday and ends at 10 p.m. on Tuesday.

After 8 a.m., many followers were seen protesting and shouting slogans when the police stopped them to check them out on the way to Sabarimala. Private vehicles carrying pilgrims were stopped.

As of late Sunday, a dozen female officers over the age of 50 were stationed in the temple city, who for a long time had only seen police presence during the puja high season.

The state government is taking all necessary precautions to prevent incidents such as the massive protests against the Supreme Court ruling on September 28, which allows the previously banned age group of girls and women to enter the Lord Ayyappa Shrine.

From October 17-22, when the temple was open for the monthly puja, the temple tantri and officials said they would close the shrine if a devotee between the ages of 10 and 50 tried to enter the Sanctum Sanctorum, like it against that was temple tradition.

The Kerala government has announced that it will implement the Supreme Court ruling against the BJP and numerous Hindu groups that have opposed the ruling.

Application of car jammer in border defense and military

Car jammer protects military and VIP convoys from being attacked by remotely controlled improvised explosive devices (RCIED) buried by terrorists in advance, and can effectively prevent terrorists from tracking the convoy via GPS.

It is used for EOD. Before EOD, it is necessary to effectively shield the wireless communication signal around the bomb to prevent terrorists from detonating the bomb through the remote control wireless device during the EOD process and avoid huge casualties.

It is used for the police to interfere with common communication frequencies in the process of rounding up criminals to prevent criminal gangs or police from leaking secrets through wireless devices and making rounds invalid. At the same time, it can also prevent criminals from remotely controlling bombs at key entrances of the building, allowing the police to quickly enter the building for round-up and avoid casualties.

When border defense and military patrols, prevent terrorists from being attacked by remote improvised explosive devices buried along the way.

Used in military protection areas, government buildings and other important places, shielding wireless signals can effectively prevent terrorists from conducting fixed-point blasting through remote-controlled bombs. At the same time, criminals who have been hidden in the military protection zone cannot communicate wirelessly with the outside world and leak secrets.

vehicle portable gps jammer anti-tracking

The wireless signal jammer adopts the American original Pelican military standard tow box, which is dustproof, shockproof and drop-proof! It uses external AC power supply, can also be powered by a built-in battery, and also supports external battery box power supply or generator power supply, the power supply mode is flexible!

The equipment adopts a modular design, and each component can be directly plugged in and replaced. Among them, five high-power shielding modules, the frequency can be customized and combined at will

The equipment control method is flexible and diverse, which can be directly operated and controlled on the machine, or controlled by an external wire control box.

Analysis of Market Demand of Prison Mobile Phone Signal Shielding Project

With the continuous development and popularization of mobile communication tools such as mobile phones, and the continuous improvement of the technical level of personal mobile communication methods, especially after the promotion and application of 3G, 4G, and 5G technologies, it will be used for prisons, labor camps, detention centers, drug rehabilitation centers, etc. The negative effects of similar areas are becoming more and more prominent. In prisons, detention centers and other supervision places, mobile communication tools such as mobile phones are explicitly prohibited, not only for prisoners, but also for supervisors. Once the mobile phone is brought into the prison and put into use, it will bring great harm to the management, safety and development of the prison. Some prisoners use illegally smuggled mobile phones to make calls, send text messages, obtain information, threaten witnesses, and even form gangs and organize escapes. Because of this, the installation of cell phone signal jammer in prisons and other prison places is imminent. Degree!

22 Antennas all Signal Jammers

What factors should be considered in establishing a mobile phone signal shielding system

Due to the influence of the base station, the distance between each base station and the prison is different. Generally, it is recommended that there is no base station within two to three hundred meters near the prison area where the mobile phone signal shielding system is installed. Strong influence!

The scale, number of buildings, structure, size, floor height, etc. of each prison are different. The distribution direction, power, and terrain of mobile phone base stations around each prison are different. The strength of mobile phone signals transmitted from remote base stations is also different. There is no difference. How to arrange the points in each prison needs to be designed according to the actual situation!

Even in the same environment, the base station signal is affected by wind disturbance, air humidity, etc., which will cause fluctuations in signal field strength. In addition, there are differences in field strength between indoor and outdoor spaces, and the ground, building structure, materials and metal objects affect the mobile phone. Shielding the signal causes very complex adverse effects.

Cell phone signal shielding systems are installed in prisons. Most shielding terminals are installed in relatively high or slightly hidden locations, and are not detected by ordinary people, but they may not prevent man-made damage. The influence of future human factors must be considered, including prisons. Guilty (also resisted by prison guards) artificially damaging or cutting off the power supply to the jammer,

With the accumulation of working hours, electronic products such as mobile phone signal jammers will also have normal wear and tear. Several shielding points installed in the prison cannot be guaranteed to operate 100% stably every day. As a manager, you should have a set The simple and convenient centralized control system can detect the man-made damage or normal loss of the shielding point in time, and arrange the maintenance and inspection quickly.

Signal interference in teaching area during teaching management

With the increasing popularity of mobile phones, the status quo of students using mobile phones has even reached a large number of elementary school students, and the proportion of middle schools and high schools is even greater. At present, although various schools have clearly stipulated that teachers are not allowed to receive and call mobile phones during class, and students are also required to turn off their mobile phones or adjust their mobile phones to vibrate by themselves, but due to students’ self-discipline and self-consciousness, they have been giving schools daily teaching The management brings constant trouble! such as:

There will always be some students who forget to turn their mobile phones to vibrate for some reason, and a sudden call or text message during normal class, especially when some funny and tricky sounds sound, the originally quiet class and normal teaching will be interrupted.

Some students who are unconscious in class have the function of text messaging on their mobile phones. If they don’t want to attend class during class, they don’t need to whisper to the next desk to chat, just send and receive text messages on their phones.

Today’s mobile phones are equipped with Internet access, and students can frequently use their mobile phones to chat, read novels, and play games during class.

The school installs and uses the cell phone signal jammer device intelligent management system to prevent students from using their mobile phones excessively during class. However, when the mobile phone signal is shielded in the classroom, some students will say that the school violates the student’s “right to freedom of communication”. From the standpoint of students who frequently use mobile phones, these views seem reasonable, but if you think about it more seriously, if blocking the mobile phone signal infringes the students’ communication rights, then these students use mobile phones in classrooms or self-study. Have you ever thought that you violated the right of other students to receive education? Have you ever thought about respecting the teacher’s teaching authority? Whether right or freedom, there are only relatives, not absolutes. Any rights or freedoms are based on respect for the rights of others. The laws of our country are also rules based on the interests of most people. This rule protects the rights of most people. If you really want to talk about infringement, it is that a small number of students who use mobile phones freely regardless of occasion infringed on the education rights of most students.

Powerful signal jammer device

Some students or their parents may also suggest that the school has blocked mobile phone signals during class. What if there is something urgent in the family to contact or fail to notify the students themselves? In fact, this question is not difficult to answer. First of all, from the perspective of students, the reason why students use their mobile phones is to make contact with their parents convenient. In fact, students are in school, as long as there is no emergency, they don’t need to be on 24 hours a day. In case of special circumstances, the school, the teacher and the parents will take the initiative to contact. Secondly, from the perspective of parents, just remember that since their children were equipped with mobile phones, there have been a few times so far because of special circumstances. If they had to make a phone call, they would immediately stop learning in class and leave school to deal with it. of?

Moreover, the school has installed the campus mobile phone shielding device intelligent management system. It does not shield students from their mobile phones for all the 24 hours in the school. It only shields students for 40 to 50 minutes in the morning and afternoon classes. Shielding, even the ten-minute break between classes will restore the cell phone signal. The mobile phone jammer intelligent management system has fully considered the humanized shielding of students’ mobile phone signals.