Category: Tag High Power

In some countries, the jammer has been approved or used by the authorities. Therefore, in many cinemas and theaters in France, mobile phones are used very frequently, customers in stores can use mobile phones to quickly compare prices, and retailers will benefit from jammers in stores. Some military institutions in the United States have installed high-power jammer to prevent the use of mobile phones at all times.

The role of drones in future warfare, what about drone jammers?

War is entering the era of drones faster than expected, and the “high altitude danger” of civilian drones is increasing, except for large drones like the Global Hawk. At home and abroad, the phenomenon of “black flying” and “flying flying” has emerged one after another, which has attracted more and more attention to security monitoring issues such as civil aircraft taking off and landing, eavesdropping in secret areas. In fact, the increasing number of unmanned aerial vehicle (UAV) crimes makes people pay more and more attention to the management of unmanned aerial vehicle (UAV).

drone signal jammer

The drone signal jammer market is developing rapidly, and UAVs are now playing a role in aerial photography, mapping, delivery, rescue and other fields. However, “problems” followed. These problems affected the order of aviation and the penetration of sensitive areas… These phenomena even led to the rapid development of the derivatives industry and unmanned aerial vehicles (uav). Equipment and service providers, unmanned aerial vehicle (UAV) “predators” have also benefited a lot from it, which brings huge development opportunities to unmanned aerial vehicle (UAV) companies.

The Chinese military has been equipped with the ability of the US military to use drones to interfere with radiation weapons. Large electronic warfare equipment can even destroy and capture enemy large drones. For example, Russia’s “automatic” countermeasure energy response system has some powerful functions that the outside world has not yet realized. The radar system can suppress 50 aircraft at an altitude of 30,000 meters, and can also conduct electronic attacks on fighter jets and unmanned aircraft within a radius of 100 square kilometers. In October 2011, Iran captured the US RQ-170 stealth drone “outpost” using an electronic countermeasure system provided by Russia.

Example of installation of UAV countermeasure equipment by cultural relics protection unit

UAV “black flying” harm

There are blind spots in the supervision of drones in my country, and the large-scale use of drones brings hidden dangers to public safety. Drones that were originally used for legal purposes are increasingly being used for criminal purposes. The public has become increasingly aware of the harm that drones may cause. UAVs can smuggle drugs; UAVs can spy on privacy/technology; UAVs can affect civil aviation – close to collisions; UAVs may appear in sensitive areas, key locations, cultural heritage protection units and government facilities; UAVs may even Can shoot automatically…

Because the intrusion of drones has brought great harm to everyone’s lives, many units have begun to install drone countermeasures. Let’s take a look at this fixed drone counter independently developed by Texin Electronics. Control the efficiency of the equipment.

anti uav jammers remote control

On September 20, 2019, Shenzhen Texin Electronics installed a set of fixed drone signal jammer in the cultural relics protection unit of Zunyi City, Guizhou. The interference range of the current frequency hopping aircraft on the market is more than 1 km, and the interference frequency band controls 2.4G and 5.8. G is positioned at 1.5G to achieve the effect of driving away the forced landing. The 1.5km drone cannot fly into the cultural relic unit.

How to know the shielding range of indoor mobile phone signal jammer?

Many customers call and say that I need a cell phone signal jammer that can shield a radius of 50 meters, an interval of 500 meters, and a radius of one kilometer. It also needs to be shielded by China Mobile, China Unicom and China Telecom. Is there a problem with the customer’s request? No problem, and a specific interval requirement is given, but can it be completed? The answer is that it is more difficult to achieve. Why is it more difficult to achieve? Isn’t the signal jammer’s parameters marked with its own shielding interval, can it be done if you put a few more units according to this interval? In fact, it is not the case, the customer is not wrong, but they don’t know the signal jammer The shielding plan is not a fixed value. How to understand it? Texin Electronics will give you an explanation.

The signal jammer scans the low-end frequency to the high-end of the channel at a certain speed during the operation process. This scanning speed can constitute garbled interference in the message signal received by the mobile phone, causing the mobile phone to fail to detect the normal microwave signal data announced from the base station , Make the mobile phone unable to establish the connection with the base station within a certain plan, to achieve the purpose of shielding the mobile phone signal.

high power signal jammer

Simply speaking, the frequency announced by the mobile phone signal jammer disturbs the mobile phone to receive the frequency of the base station. The jammer and the base station are destined to be a competition connection. If the transmission power of the signal jammer is less than the channel that the base station transmits to the mobile phone in the environment at that time Power, then the jammer will not be able to shield, only the power of the signal jammer is greater than the power delivered by the base station to the mobile phone in order to effectively shield. Therefore, any shielding device used in different signal environments will show different shielding intervals, and mobile, China Unicom and telecommunications will be different, because the base station density, base station orientation and base station power built by these three operators cannot be the same of.

In other words, how many meters the mobile phone signal jammer can shield is not only related to its own transmission power, but also to the distance between the base stations in the use environment (base stations are not limited to large-scale transmission towers built on the ground, but also buildings. The signal expansion antenna on the top and the signal expansion and dispersion made in some buildings), another important factor is obstacles, if it is a metal material, it will directly block; if it is a solid wall of reinforced concrete, it will be less attenuated after penetration 10 times; if it is wood board or glass material, the attenuation after penetration is relatively small.

So next time there are customers who say how many meters apart they need to be shielded, they must ask about the distance between the base stations in the environment, and whether they are used indoors or outdoors, whether they need to penetrate walls, etc. Customers can contact us to learn about the use of signal jammers. Only by understanding these can they better choose the appropriate signal jammer for customers.

How to visualize the interference of the wi-fi signal has become the norm as a result?

A wifi jammer sends a predefined white noise signal in specific bandwidths, which interrupts all wifi / bluetooth communication. Our jamming units can be programmed to jam any number of discrete frequencies within the limits of their RF capabilities. For basic wifi jamming systems, the effective disturbance radius is approximately 20 meters.

Jammer device also include Wi-Fi jammers and cell phone jammers, which can prevent your mobile phone from receiving or making calls, emails, and text messages. They can also prevent your Wi-Fi enabled device from connecting to the Internet for multiple operations, prevent you from receiving exact positioning signals with the use of GPS, and prevent you from being spotted by a first responder in an emergency.

2G 3G 4G 5G cell signal jammer

Advances in electronic warfare are one of the key elements guiding the development of autonomous systems for the armed forces. Right now, drones are waging electronic warfare against cellular communications, but it’s not hard to imagine the same doctrines being applied with new technologies. In this scenario, it’s easy to imagine other vehicles turning into jamming machines on future battlefields … and maybe even today.

Deauthentication attacks, or more generally “jamming” attacks, may violate certain laws or regulations, depending on the country. However, it is often difficult to identify the source of interference, as it can be small and easily hidden.

Wammer, short for WIFI jammer, brings together all the steps behind an extremely simple but effective user interface. To launch an attack, the user just has to press the “Activate the jammer” button. That’s all! A few seconds after the jamming begins, the user’s device will be the only one connected to the WiFi access point.

The problem is, (a) good Wi-Fi routers today use 5 GHz in addition to 2.4 GHz and there are many more 5 GHz channels available. Then there is (b) that if you obstruct a 2.4 GHz channel, the access point owner only needs to change the channel. It can turn into an escalating war where they switch channels and you switch channels on your phone. Non-stop. Until someone climbed with a baseball bat or worse.

As we said, we are very dependent on wireless networks. Wireless communication is like two people talking. One of them speaks and listens, and vice versa. What if a third person approaches them and starts screaming so loud that the other two cannot listen to each other? At first they will try to keep the conversation going, but soon they will realize that this is not possible and they will stop talking while waiting for the madman to shut up. This is what happens to many communication protocols. When they see that the channel is busy, they pull out. Thus, the exchange of messages between these devices is suspended. Even if they tried to communicate when the medium was not free, as some other protocols do, if the noise was too high, messages would not be received correctly on the other side and no communication would be possible. We call this wireless jamming.

WiFi Jammers for Wireless Security

We all love to use WiFi, it’s a faster wireless connection, and it’s convenient. But at the same time, we also have to use the wifi jammer. We could walk around the house while still keeping our cell phones and computers connected to the Internet at high quality. This could all be done wirelessly, which is great for all of us. But at the same time, we also put ourselves in wireless danger. People could hack our cell phones or our computers to steal our information, like our bank account, our password, our mailbox, our famous photos and all. This will put us in dangerous situations. We need to find a way to get away from this kind of wireless hacker. The wireless jammer could help us with that. It could emit a strong signal, much stronger than the WiFi signal, to cover and hide the WiFi signal, so that all wireless devices in a certain place could not receive the WiFi signal.

desktop wifi signal jammers

You see, WiFi jammer is a high power electronic device, it could take us out of the danger of WiFi. But you have to think about it and use it carefully. You need to calculate the size of where you want to jam and buy the appropriate WiFi jammer. If you buy a WiFi jammer that could jam for longer than necessary, then your neighbor might be stuck causing you trouble. To learn how to choose a suitable WiFi jammer, please visit our website. Here we have a lot of articles to tell you what a WiFi jammer is and how to choose a good WiFi jammer. And here you can find a lot of different wifi jammers, you can choose the best one for your need.

There is some kind of WiFi jammer which can only jam the WiFi signal. And there are many other jammers which block not only wifi signal but also other signals. such as cell phone signal, GPS signal, bluetooth signal, remote control signal, 4G signal and others. To jam the cell phone signal is a mobile phone jammer; jamming the GPS signal is a GPS Jammer. The jammers which could block different signals at the same time are multi-function jammers.

You have to choose the right one for your different purpose. You have to think about what functions you need at the same time. You need to buy a Jammer within your budget. If you have any questions, come to our website, here we have hundreds of jammers for your selection.

The latest design of cell phone jammers

In the conditions we need quiet, like reading books, listening to music, watching television, the teachers were in school, a library, and in many other places and conditions and, where appropriate, to prevent the phone signal is the best way. And in many other conditions, it is also necessary to cut other groups, which is why an increasing number of new advanced signal jammer designs have been invented.

When people take a very practical high quality jammer, of course, considering the price, quality, and many other factors, then compare and get the best jammers and reliable signal in our site a lot of new style of Advanced jammers design can be found here, you can watch this “15W high strength desktop antenna 8 WiFi Bluetooth 3G 4G mobile phone interceptor,” it is a new design of the signal blocker, has strong function.

16 Antennas Signal Jammer

Then directly go to look at the details of the new design blocking phone WiFi signal handheld gps jammer, and for more details, and you will soon know that this high power signal jammer designed for high power office 15W, so that you can realize This high-power interference jammer signals in detail according to the signal strength of up to 50 meters, which is very powerful, can meet the needs of many people. In addition to eight antenna design, this high power signal jammer 8 antenna signal can be cut off from cell phone signals and 2G 3G 4G Bluetooth WiFi signals at the same time.

meeting rooms, conference halls, museums, galleries, theaters, concert halls, churches, temples, restaurants, classrooms, training centers, factories, banks and many other places can be used widely this high power cellular phone jammers 4G Wi-Fi connection. You can also get many other styles of signal similar to high power computer and new design interference signal blocking, you can choose the right jammers.

Are Cell Phone Jammers the Next Big Thing?

A Philadelphia man was caught red-handed this week for using a mobile phone jammer to prevent fellow passengers on a public transit bus from using their cell phones.

“I guess I take the law into my own hands,” he told an NBC10 reporter about the illegal jammer, “and to be honest, I’m proud of it.”

Teresa Masterson, a writer on NBC10, first encountered the jammer on her morning commute and gave NBC investigators a lead.

12 Antennas Signal Jammer

A jammer that blocks radio frequencies isn’t just limited to blocking people

But while today’s news and the resulting internet outrage can only be felt by a single man, the practice of jamming cell phones is widespread in both New York and Washington DC. I spoke to two such “jammers” this morning about why they bought equipment that ranged from $ 40 to over $ 10,000 on sites like jammer-welt.com. Some boast a radius of just 15 feet, while others claim they are used in military vehicles and for counter-terrorism maneuvers.

“You’re the best thing ever,” says a New Jersey-to-New York commuter who lugs around a jammer every morning on his 40-minute ride on the New Jersey Transit. He doesn’t do it for the entire trip, he says, only when a fellow passenger speaks “too loudly” or “too long”. “It fits in your pocket – they even make shady packs of cigarettes. I would guess it’s effective for a 15 foot radius, possibly more,” he says.

“When I’ve used it, it’s to turn off a loud speaker on the train that is sitting near me.” He says he bought it online from a website that imports the equipment from China, where it’s legal, and when asked, told me that he never felt guilty about keeping his passengers from talking. “No fault,” he says, “just personal high fives.”

“I always have a grace period for calls,” says another jammer who takes the MARC train to Washington DC. The journey takes about 30 minutes. “If someone says,” Okay, well, I’ll be in the office in 10 minutes, then we can discuss it. “I’m not going to bother you. But if you talk about what you did last night and what kind of curtains you are getting for the house, then yes. Silenced.”

Does he feel guilty? As if it was causing a public grievance? Not as much. “People are mad and ranting on their cell phones all the time. But I feel like it gives me some control over what I believe is becoming an increasingly reckless society.

“I’m not a threat to public safety,” he says. “I don’t put anyone in danger more than anyone else in a subway without the reception of cells being compromised.”

jammer-welt promotes the sensible and legal use of cell phone jammers and correctly protects their legitimate rights and interests.

You can use a recording blocker to prevent recording during important meetings!

The most effective means to prevent recording is to generate random noise signals through the recording masker, which can suppress the voice signal, so that the recording equipment picks up only noise information, but cannot distinguish the voice information and cannot restore it from the recorded signal. The original information is output to ensure the security of voice information. The recording blocker adopts security encryption processing, and effectively prevents post-restoration by mixing high and low frequency audio sources.

Jammer-mart has focused on information security for 14 years. The newly developed L7B recording jammer has been upgraded on the basis of the original equipment. The FPGA-based ultrasonic noise algorithm eliminates the high frequency noise of the old equipment. It has joined the brands that have been on the market in the past two years. The information of mobile phones and recording devices has a very obvious effect on new recording devices and mobile phone recording. It is suitable for confidential meeting rooms, public security bureau petition centers, procuratorate reception halls, courts, negotiation rooms, offices and other places for private conversations.

desktop signal blocker

The recording blocker is completely silent when working. The sound recorded by ultrasonic recording and eavesdropping equipment is completely noisy, and no meaningful information can be extracted. Designed with the appearance of ordinary audio. Confidential meeting room, public security bureau petition center, prosecutor’s office reception hall, courtroom, negotiation room, office and other places for private conversation.

Working principle: The recording jammer emits ultrasonic waves with random noise that cannot be perceived by human ears. When digital devices such as mobile phones are recording, these noises are recorded into the digital device together with the sound of normal conversation, making the recorded audio invalid. The audio information in the captured video also has the same interference effect. Because the noisy ultrasonic noise is randomly generated and cannot be restored, the audio after the interference cannot be restored, thus ensuring that the original information is not leaked and spread.

As a new product, recording jammers have received more and more attention and support from people. From the previous government agencies (mainly the public security system and service-oriented windows) to the current enterprises, the needs of enterprises have gradually increased. An important reminder for us. It shows that business people are gradually attaching importance to the safety of voice information and their awareness of self-protection has increased. Imagine if in a conversation scene, if any participant turns on the recording device, or connects the call and keeps it in the call state, the remote personnel can There is no security to hear the content of the conversation at will. In this case, the recording blocker can play a good role in protecting the security of audio information.

A quick and dirty guide to monitoring mobile phones during protests

As riots against police brutality and institutionalized racism swept across the country, many people were exposed to the full power of law enforcement weapons and surveillance for the first time. Whenever protesters, cell phones and police are in the same place, protesters should pay attention to cell phone surveillance. Usually, security practitioners or other protesters respond to this issue through suggestions provided by local law enforcement agencies using cell location simulators (also known as CSS, IMSI catchers, stingrays, earth boxes, hail, fake base stations, or crosses). However, in many cases, this suggestion is wrong, or it is due to fundamental reasons such as not knowing what the cellular base station simulator is, its function and frequency of use.

Denial of service or signal interference is an additional function of CSS. In fact, the FBI has admitted that CSS can cause signal jammer to local personnel. Unfortunately, for the same reasons, it is difficult to determine the use of CSS, and it is difficult to tell how often they interrupt service, whether intentionally or unintentionally. Signal towers that look like signal interference may also be overloaded and disconnected. If many people suddenly gather in one place, it may overload the network, which is not the purpose of the design.

Professional high-power interceptor

How to protect yourself from cellular signals

As we mentioned in our self-defense guide for monitoring protesters, the best way to protect yourself from cellular site simulators is to put your phone in airplane mode and then turn off GPS [2], WiFi and Bluetooth, and cellular data. (Although “receive only” GPS and not lose its own location information, many apps track GPS location data, which is ultimately stored in a database that law enforcement agencies can search for later.)

We know that some IMSI capturers can also intercept content, but as far as we know, if you don’t downgrade your cellular connection to 2G, none of them can do it. If you want to protect your device from this attack, the best option is to use encrypted messages such as Signal or WhatsApp and put it in airplane mode when you find that your phone has fallen to 2G. (There are many valid reasons. Your phone may downgrade some of your connections to 2G, but it is safer than regretting.) However, an important part of the protest may be live broadcast/recording and immediate upload of police reports against protesters. Violent video. This is inconsistent with the recommendation to keep the phone off/in airplane mode. Up to you

Unfortunately, iOS and Android currently do not provide an easy way to force your phone to use 4G only, although developers can of course add it to their operating systems. If you can turn off 2G on your phone, this is a good preventive measure.

Set the distance due to GPS interference

From the construction of offshore wind farms and dredging ports to marine surveying and the laying of underwater cables, GPS receivers have established themselves as a critical element in many offshore and nearshore applications. Downtime in GPS tracking at sea can be dangerous and costly. GPS downtime is increasingly attributed to malfunctions.

The location of a chirp jammer in the car on Shelter Island that was used to simulate the effects of GPS interference on San Diego Bay. GPS signals are transmitted at power equivalent to that of a standard lightbulb. They are expected to travel more than 20,000 km and still be suitable for high-precision position calculations. In most cases, the signals arrive relatively intact, but can hardly be distinguished from the thermal background noise and can be ducks for any passing interferer.

Maritime applications are increasingly using high-precision positioning such as RTK and PPP, which not only use the code information modulated onto the signals, but also the phase of the signal itself. In the presence of interference, these phase-based modes suffer first.

The use of GPS signal jammer is strictly prohibited, but their effects can be assessed using a GPS simulator. Using the example of the port of San Diego, a simulator was programmed to generate the GPS signals that a receiver on a boat would see at that location. The interference of the GPS signals was mimicked by mixing the simulator signal with that of a jammer. With the jammer in the location shown in Figure 1 and the GPS receiver on a boat near the bay, the effect of interference across the bay could be extrapolated using standard models for the propagation of radio waves.

best cell phone jammers

The results in Figure 2 show that a small 10 mW chirp jammer without AIM + interference mitigation can turn off RTK positioning over several hundred meters. When AIM + is activated, the non-RTK zone in the immediate vicinity of the jammer is reduced to a few meters.

The effect of a 10 mW chirp jammer on GPS positioning in San Diego Bay with and without AIM + interference mitigation.

If you repeat the tests with a Continuous Wave Interferer (CW) of the same power, the results with AIM + are even more dramatic, as Figure 3 shows. Without AIM +, a CW interferer in the parking lot near the coast prevents RTK positioning or GPS positioning over a large part of the bay and extends several kilometers to the sea within sight of the jammer.

The effect of a 10 mW continuous jammer on GPS positioning in San Diego Bay with and without AIM + interference mitigation.

A comprehensive approach places interference issues in the foreground of the receiver design and incorporates them into every phase of signal processing. With the AsteRx4 OEM and AsteRx-U, the antenna signal is digitized immediately after filtering and automatically freed from interference using several adaptive band-stop filters.

Depending on the type of interference, the stop bandwidth is automatically set between a notch of a few kHz to 1 MHz in width. The notch filters are supplemented by an adaptive filter that can suppress more complex types of interference such as chirp jammers, frequency hopping signals from DME / TACAN devices, and powerful Inmarsat transmitters.