Category: Tag Block

Mobile phone blocker is a mobile phone blocking program or mobile phone detection system, designed to prevent unauthorized mobile phones while allowing authorized mobile phones to run. Blocking cell phone signals can prevent certain critical foundations, unauthorized calls to courts, military installations, or certain environments that need to manage cell phone activity to control the control.

Please note that in some states, cell phone jammers are illegal. Although attention to information rejection has long been an integral part of the PLA’s doctrine, this jammer is mainly used in military locations or other places where the use of mobile phones is prohibited.

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.

Principle of signal isolator

In the industrial production process, a variety of instruments and meters are used in the monitoring and control of the generation process, which will generate a variety of signals: both faint small signals of millivolt level and tens of volts Large signals, even strong signals up to thousands of volts and hundreds of amperes; there are DC low-frequency signals, high-frequency or pulse spike signals; and these signals have to go through the process of mutual transmission and transmission, so how to ensure these signals In particular, the non-distortion of analog signals during transmission will become a problem that must be solved in system debugging.

Specifically, only when the analog signal transmission between the control device and the sensors and actuators distributed in the field is fault-free and undistorted, can the process control be safe and reliable. Especially low-power analog signals are affected by various external interference signals when they are transmitted in an industrial environment with high interference, and they need a reliable transmission channel. Daily work experience shows that due to equipment requirements, analog signals must be handled and transmitted carefully. However, the measurement and control parameters transmitted in the form of analog signals between the field and the control layer are often in a harsh industrial environment in the transmission project, which is likely to cause distortion of these signals.

smartphone signal blocker

Second, the principle of signal jammer

At present, the signal isolator (converter) is mainly divided into several kinds of isolation methods: transformer isolation method, photoelectric isolation method and transformer and photoelectric joint isolation method.

Signal isolators have a history of more than 40 years. Early signal isolators used transformer isolation. Its characteristics are: stable performance, long life, strong load capacity, high isolation strength, but the circuit is complex, and the manufacturing process requires higher.

With the development of electronic technology, in recent years, optoelectronic isolators produced by optical couplers have gradually appeared. Its characteristics are: stable performance, strong anti-interference ability, simple wiring and low cost, but compared to The transformer isolation method has a slightly shorter life.

In some occasions where the interference is large and the process requirements are high, the signal isolator of the combination of transformer and photoelectricity appears, and its isolation ability, resistance to unlimited radio frequency and electromagnetic interference is stronger.

UAV signal race-the importance of jamming technology

With the rapid development of the drone industry, some individuals and groups have begun to use drones for malicious purposes on a global scale. Many companies are paying attention to this trend and trying to enter the anti-drone industry. They introduced various drone guns, anti-drone shooting, attacking birds, cyber artillery, lasers, missiles, GPS jammers, radio transmitters and more.

The drone did not seem to hit the projectile and laser when it landed (although this kind of evidence will definitely change this analysis). In addition to physical projectiles, there are three known non-dynamic methods to stop drones. Radio frequency (RF) interference, global navigation satellite system (GNSS) interference and deception. Radio frequency jammer disrupts the communication between the drone and its operator, usually causing the drone to descend or return home. With GNSS, the drone will lose its link with the satellite navigation. After that, the drone will usually hover, land or return to its original position. The attacker used deception to provide new information to the drone to control its flight.

3 bands uav blocker

By the way, the operation on the Crimean Peninsula was a great success, without bloodshed, because all Ukrainian military communications were cut off. I’m not sure about the mobile phone, but it is not allowed to use it as a military communication channel. Therefore, the Ukrainian army did not resist because it did not receive an order from Kiev. They don’t need much… Many people just joined the Russian army and navy enthusiastically.

It did not “close” anything. First, it will cause a big sensation on the radar oscilloscope, until the software or personnel press the “search for interference” mode button. Then lock the weapon system on the jammer. In a real war, the jammer will disappear within a few seconds. The American ship did not want this to be a fierce war, so it made the destroyer think it was evacuating it. You’re welcome.

China will continue to develop features designed to limit or prevent the enemy’s use of space-based assets in crises and conflicts, including the development of directed energy weapons and satellite interference.

The problem is that many potential enemies, including the Chinese and Russians, are developing advanced digital radio frequency memory (DRFM) jammers. These jammers effectively remember the incoming radar signal and repeatedly send it back to the sender. This will greatly reduce the performance of Friend Trader.

Robots with cameras are very dangerous

The robot industry is one of the cornerstones of modern technological development and global progress. In this field, not only amateurs, but also professionals, there are many innovative thinking and enthusiasts. One of them is the famous iRobot company, which made a lot of cool robots, such as iRobot Warrior or iRobot Roomba. Therefore, the IEEE visited the video from its headquarters and found out many different and interesting things about the technology and development of iRobot robots.

These robots can be autonomous or remotely controlled. They also have many different skills and functions. For example, many robots are created from inspiration from nature. They are crab-shaped and can move over different terrain to adapt to the surface. Or there is a worm-shaped iRobot, which can work in a working oil rig, move around tight places, and reach places that are inaccessible to people.

With iRobots, you can move around difficult conditions (like nuclear power plants) after accidents or other environments that are extremely dangerous for anyone. There are also very few types of iRobots that can mimic human emotions and even facial expressions (remember Japanese robots).

The next category of iRobots is exploratory. For example, some robots can climb any type of wall or other vertical surface: glass, wet surface, smooth surface or any other surface. They use suction cups and push air into them to do the job. In addition, they can withstand a good weight, like 6 packs of soda, while the size of the robot itself is small. Imagine how many devices it can carry!

There are many different sensors on iRobots. They may realize that someone or something is touching or hitting them, which makes the two things different. According to their sensors, the robot will react. Robots can also react to sounds and distinguish themselves based on sound volume. Additionally, iRobot Roomba can find obstacles to avoid, such as walls or stairs.

8 Bands High Power Portable Jammers

iRobot has also created a small robot that looks and behaves like the Recon Scout XT from ReconRobotics. Soldiers can put them in their pockets, throw them into buildings, and use them for remote surveillance. Or there is a robot that can elongate its “neck” with a camera to a height of 8 feet to spy on high walls and fences. Or there’s another voyeur robot, which is small enough to move under the door like a worm, with a miniature camera on it. If you want to prevent others from spying on you through drone jammer, you can use jammers to prevent others from spying on you.

Although iRobot has fully autonomous self-driving cars (pre-Google cars), most surveillance robots are still remotely controlled by humans, as the full robotic automation technology is military grade and expensive. Additionally, there are iRobots called Swarm (not to be confused with the flying SWARM I wrote before), which can communicate with each other, assign a group leader, and complete tasks as a team. If the leader is arrested or destroyed, he will choose a new one from the remaining robots in the group.

As long as modern robots can do a lot of things like jumping, flying, balancing, etc., almost anyone can use them to hide people who are lost during the day and night. One of them can be you. Therefore, in order to protect your life from evolving threats, you can use jammers on robots which can be adjusted to block all frequencies (Wi-Fi, Bluetooth, standard remotes, GPS, GSM, etc.) that ‘they use.

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.

Without jammers, Mandoli is a “cellular friendly” prison

Mandoli Prison in Delhi, which houses more than 3,000 prisoners, works without a cell phone jammer as the prison administration is still waiting for 4G jammer. Mandoli prison officials, which opened for prisoners in 2020 to relieve the Tihar prison in Delhi, confirmed that they do not yet need to install a single jammer.

The device is designed to block signals sent by cell phones and make it impossible for prisoners to use phones within the prison complex even if they manage to get the phone inside.

phone signal jammer

Prisoners are prohibited from carrying or using cell phones in Indian prisons.

The prisoners at Mandoli take advantage of the absence of jammers to break free. They make blackmail calls, file complaints or make videos and share them with their contacts in the city – in undisguised 4G glory.

In the past two months, Delhi police said they had blown up two racketeers operated by prisoners in the Mandoli prison complex.

On Thursday last week, three prisoners were reportedly arrested (in this case, officially from prison) for demanding 50,000 rupees from a man in Geeta Colony.

Two days earlier, the city police’s special cell (anti-terrorist unit) had alleged that they had averted murders by arresting two men who had been ordered to kill two men by a gangster detained in Mandoli. The police then announced that they had intercepted calls from Chanderbhan (aka Aman Yadav), who was being held in Mandoli Prison, to his staff – Balkishan and Mohammed Ateek – to eliminate two men who did not give him protection money.

A senior Home Office official said 4G jammers, recently approved by the government, were not available sooner. “We have moved to install them and the preliminary work is ongoing. Permitting jammers to use and installing the latest technology will take some time. Once installed, the devices will be the best and will render all cell phones in jail unusable.”

Fifteen days ago, the video of a gangster from western Uttar Pradesh showing the man recording a video on his cell phone while cooking in a mandoli prison cell had gone viral on social media.

Prison officials said that although the new prison was equipped with a jammer, the prison director general had instructed the prison general to carry out strict controls every day.

“Senior officials have instructed us to run strict security checks and warned us of action if phones are smuggled in. The few cases where prisoners used cell phones have been ordered to investigate. We have been warned that there will be strict measures to be taken nothing like this will happen in the future. “

What is a GPS jammer? Are GPS jammers generally used in cars?

The GPS signal jamming system is designed to suppress the signal of the global satellite navigation GPS system in the range of 1500-1600MHz. The jammer makes it impossible for GPS satellites to monitor the location of cars and all vehicles through GPS, and the GPS jammer device will not interfere with mobile phones and other devices. Gps jammers can range from 5 to 15 meters, which is sufficient for cars and trucks and buses, because the tracker is usually installed in the cab inside the car. After starting the connection through the car cigarette lighter, the device immediately starts to work and generates radio noise (interference) in the range of 1500-1600 MHz (L1/L2) within a 15-meter radius.

handheld gps signal jammer

GPS equipment will need a phone card. The current location information calculated by the GPS module is uploaded from the communication base station to the positioning server through this card for users to query, and the jammer uses wireless electromagnetic waves to interfere with the communication between the card and the communication base station to achieve The purpose of GPS location cannot be queried by the user.

Working principle of GPS jammer:

Mainly by releasing radio interference waves, the GPS locator can be invalidated within the designated electromagnetic wave band, forming the same electromagnetic environment as the equipment used to block the signal.

There are two ways to shield GPS signals. First: The direct is to remove the two wires of the GPS host. Second: Go to the electronics market to buy a GPS signal jammer, but you must first distinguish what signal tracking method the GPS on your car uses.

There are only two ways of signal tracking: (1) Cell phone signal. (2) Direct satellite tracking signal.

Generally, most GPS tracking signals use mobile phone signals. GPS jammers have the same interference effect on car navigation. GPS used for car navigation is the same as mobile phone signals. It is easily interfered by electronic devices. The signals are shielded, so that all communication devices in the range lose their signals. However, such equipment also has disadvantages for the users. The signal jammer can only be turned on temporarily, and it is impossible to open it forever. As long as he turns off the jammer, the GPS will have the signal again.

Meticulously developed high-tech product MDPB-40C jammer

The MDPB-40C mobile phone signal jammer is a high-tech product that our factory adopts foreign advanced technology, aims at the continuous development of communication standards, and is carefully developed according to the actual situation of foreign mobile communications. It can be used in a radius of 10-25 meters (about 50-300 Square meters, the shielding range can be adjusted according to the required location) GSM/ CDMA/ AMPS/DCS/PHS/3G (WCDMA, TD-SCDMA and CDMA2000) and 4G mobile phone signals can be cut off. 2. The 4G wireless signal prevents the mobile phone from making and It can answer, and cannot send or receive text messages, but it will not interfere with the work of other electronic devices, thereby ensuring the safety of the required place. The mobile phone can be used without any damage to the human body after leaving the partition range.

12 Antennas powerful Jammer

Within a certain frequency range, the mobile phone and the base station are connected by radio waves, and data and sound transmission are completed with a certain baud rate and modulation method. The jammer scans from the low end frequency of the forward channel to the high end at a certain speed during operation. This scanning speed can cause garbled interference in the message signal received by the mobile phone, 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 and achieve the purpose of shielding the mobile phone signal. The mobile phone appears to search the network, no signal, No service system, etc.

For the shielding of the internal area of ​​the building, the distance between the 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 normal communication of mobile phone signals in the surrounding public facilities. , 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.

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.