Mobile phone shielding device selection guide for examination rooms

By the annual exam season, all parties have begun to prepare for the exam, and the invigilator has various tricks to prevent high-tech fraud. Among them, the shielding device used in the examination room is still an anti-fraud shielding device. However, Chengdu Saiyue Communication reminds that there are many types of shielding devices, and users should clarify their needs before purchasing them to avoid test room accidents due to poor shielding effects, and pay attention to the correctness of the method of use.

First of all, I want to clarify the place of use. Most schools use test room-type mobile phone shields that are suitable for long-term work and are durable. The second is how big are we in the shielded area? For example, if it is a room of 100 square meters or a venue of thousands of square meters, if the area is large, the power must be larger, and if the area is small, the shielding power must be considered small. Then there is which frequency bands need to be shielded. Are all China Mobile, China Unicom, Telecom and CDMA shielded? Still only need to shield part of the frequency band.

Phone Wifi signal jammer

At this time, we remind everyone that if you want to buy a suitable shielding device to achieve the effect, it depends on the method used. The main points are as follows:

1. It is recommended that the indoor shielding device be placed at a height of about 180cm-220cm above the ground, with a forward angle.

2. Whether there are obstructions (such as walls, metal products, etc.) between the wireless jammer and wireless communication equipment (mobile phones, etc.). The interference signal emitted by the jammer will be attenuated to different degrees after passing through the obstruction, please try to avoid it.

3. The weaker the wireless communication signal strength in the use environment, the stronger the theoretical shielding effect of the shielding device.

4. The farther the jammer application environment is from the signal tower, the stronger the theoretical shielding effect of the jammer.

Cheap GPS jammers pose a major threat to drones

Jammers that can be bought for as little as $ 50 threaten commercial drones, but options exist.

With the rotors buzzing and the airframes racing through the air, drones can be very dangerous if flights don’t go as planned. Much has been gnawed about the FAA’s measured approach to implementing commercial drone guidelines, but the fact is there are real dangers, even from bad actors using inexpensive GPS jammer.

phone signal jammer

GPS signal jamming technology is evolving, decreasing in size and cost. These days jammers can be bought online for as little as $ 50. Jamming has long been a threat to military assets and is becoming a commercial problem today as commercial drone shipments become a reality and attacks become ubiquitous around the world. This threat now affects trade, law enforcement, and defense drones on critical missions.

During a choreographed light show in Hong Kong in 2018, 46 drones fell from the sky due to a jamming device. The resulting property damage and loss of hardware is estimated to cost an estimated HK $ 1 million. Almost all drones have security protocols that can be used to send them home or to a safe landing site in the event of a disruption. However, these functions were found to be ineffective at the Hong Kong show.

“These are professional-grade drones already built with technology that will guide them back to the launch site,” Anthony Lau Chun-hon, director of the events committee, told the South China Morning Post. “But the signals were so strong that many of them just fell out of thin air.”

Drones and their services are decidedly dependent on GPS signals. Although the drone may have backup methods (INS / OPS), GPS references are still required for positioning, navigation and stabilization. GPS attacks are therefore the easiest way to shut down a drone and potentially cause harm to life and property.

The good news is that solutions for drones are arriving with commercial quality and coming straight from the defense sector. One comes from a company called infiniDome, which makes a device called a GPSdome that is built into a drone’s GNSS receivers and uses a unique interference filter system that combines the patterns of two omnidirectional antennas. GPSdome analyzes the interference signal in real time and feeds its properties into infiniDome’s proprietary algorithm to filter and reject attacking RF interference, so that the UAS continues to rely on GPS signals during a jamming attack. If an interference signal is detected, the GPSdome notifies the operator of possible signal interference.

Easy Aerial, a leading provider of autonomous, drone-based surveillance solutions for commercial, government and defense applications, recently added GPSdome to its range of autonomous unmanned aerial systems for military use.

“We chose GPSdome because it was a proven solution that was a perfect fit for the various missions our customers routinely fly in some of the most inhospitable and hostile environments in the world,” said Ido Gur, Co-Founder and CEO of Easy Aerial. “While our systems have multiple redundancies on board, GPS signals for maintaining position, navigation and timing accuracy are critical to ensure uninterrupted operation.”

This type of lightweight, small form factor, low power shielding technology is a critical step towards widespread adoption of commercial drones. Other companies like Sepentrio also take GPS interference in drone applications with integrated sensor solutions seriously.

It is certain that the problem of GPS interference and spoofing will receive more attention in the coming days. Fortunately, developers seem to be beginning to see tools that they can use to counter the growing threat.

What should I do if I am tracked by cell phone signals?

China now has a lot of cell phone signal jammer, but what would happen if China did not have a mobile phone signal booster? Most of the mobile phone signal booster technology is not up to standard, resulting in a serious decline in the overall signal quality of many urban villages. It is because of this type of equipment that the mobile phone signal amplifier products are notorious. The actual data interferes with the base station and affects the neighbors’ equipment. It is just that people have a habit of doing well. If there is a problem, it will be spread.

car gps jammer

Although the mobile phone signal amplifier has produced many negative effects, the positive effects are even greater. In my basement, there is no signal to solve by myself. Your own company has just been renovated, and you can solve it yourself if the signal is not enough. Any environment where the signal cannot be resolved in time can be resolved with an amplifier.

Most of the mobile phone signal amplifier technology is not up to standard, leading to a serious decline in the overall signal quality of many urban villages now. It is because of this type of equipment that the mobile phone signal amplifier product is notorious for oceans. The actual data interferes with the base station and affects the neighbors’ equipment. It is just that people have a habit of doing well. If there is a problem, it will be spread.

Although the mobile phone signal amplifier has produced many negative effects, the positive effects are even greater. In my basement, there is no signal to solve by myself. Your own company has just been renovated, and you can solve it yourself if the signal is not enough. Any environment where the signal cannot be resolved in time can be resolved with an amplifier.

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.

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.

An easy way to defend yourself in the future – wireless jammer

The wireless industry is advancing and accelerating its pace. More and more things that you used to use separately are being or already being consumed by mobile devices. Cell phones and smartphones can be used for calls and SMS, to listen to music, watch videos, take pictures and videos, as a notebook or audio recorder, GPS navigator, map, internet access and games.

There are probably a few more items you can add to this list, but industry developers are already doing so. The new and extensive feature is the key.

key-key holderSurprised? Based on key card and car lock technologies, you can use this function to open your house doors, hotel doors, offices, garages and even your car via your smartphone. The technology is called Near Field Communication (NFC). Imagine not unlocking the door with the key, but moving your mobile phone near the lock to open it. Same goes for the cars and every other door you can think of.

It’s as simple as it is, but you need to change the locks and locking system. And if your house has a power outage or your smartphone battery runs out, you still need to have the old key to open the doors.

It goes on, now imagine that you are at work and your friend has come to your home. It is a couple of hours until your shift ends and there is no point in your friend going anywhere else. What will it be Does he or she have to be on the doorstep? What if the weather is not so good and the rain comes? Or is it winter, cold, snowy and uncomfortable?

Cell Phone Engine Start, but with the help of technological advancement, you can control the situation. With a single push of a button, your internet connected smart device sends a signal to your door and unlocks it to let your friend in.

You can apply the same to your car. You can turn on the air conditioning in a hot summer and heat up the engine and passenger compartment in a cold winter.

While there are many uses for this amazing technology, some dangers can also arise.

Thieves, hackers and other crooks would eventually get more technological too. To break into your home or steal your car, they would use electronic devices. So you need to be prepared.

Mobile Phone Jammer

As was said at the beginning, wireless jammer always work to reliably defend these villains. You wouldn’t let thieves do their dirty deeds and when you get home you will turn them off on a different frequency using the remote control. In this way, you can be protected in the future and combine the advantages of new technologies with the security measures.

Think about it right now and take the first step into your future!

Precision shot down UAV-signal jamming weapon

The DroneGun of the jammer can force the drone to return to the operator or land safely. It does this by sending signals to GPS signals that inform the drone or interfering with radio signals between the operator and the drone. When the radio signal is lost, the drone will automatically return to the operator. When both GPS and radio signals are lost, the drone will automatically enter a safe landing mode.

In fact, interference may also be a test bed for new anti-jamming technologies being developed, and it is in the air. As the function of preventing the use of GPS becomes easier and cheaper, the military is eager to develop new systems that enable aircraft, drones and missiles to eliminate interfering signals.

About two months ago, the jammer market introduced a third military drone jamming system called DroneGun Pro, which uses five different sensor technologies to detect and track drones. It is also equipped with jammers that can shoot down drones. Warnick said that there are multiple interceptors and it can handle countless drones. But like DroneGun, it can only be used by federal military and security agencies.

Even due to advances in radar technology, the B-2’s radar cross-section has become more obvious, and has accurate detection positions and meshing of the “threat ring” around the enemy launcher and the site. SAM will remain small. As a result, these asset types will continue to have room to navigate these loops without having to resort to defensive interference that might reveal their location.

mobile wifi uav jammer

Jammer-mart Advanced Defense Systems provides drone signal jammer, which is called “a new end-to-end defense solution designed to detect, identify, track and neutralize drones.” The UAV jammer is essentially a radar/radio jamming system that can provide defense for strategic targets with a radius of 3 kilometers. The system may interfere with signals from large drones to micro/nano drones, which, according to the company, may be used by terrorists. There is Drone Jammer under the hood, which has RPS-42 radar, MEOS electro-optical sight and C-Guard RD broad-spectrum signal blocker.

The system combines sensor data from different sources with the latest data fusion, signal analysis and interference technology. It uses radar, optical sensors and other sensors to detect and identify drones, and assess its potential threats within a range of hundreds of meters to several kilometers based on the type of drone. Based on an extensive threat database and real-time analysis of control signals, the jammer disrupted the connection between the UAV and the pilot and/or its navigation. The “Xpeller” modular system concept selects a single device from the product series based on customer needs and local conditions.

Jamming equipment prevents drones from stealing information

Today, technology is developing more and more. Drones are becoming more and more frequent in our lives. Advanced technology brings a lot of convenience to people. Many consumers use drones. UAV has been developed. I am resisting the trouble of the drone. How does the UAV signal interfere? We have developed a jammer to prevent UAV investigations and photographs. It has a wide range of functions. With the spread of technology, it is possible to purchase drones that have an impact on society.

Handheld High Power Drone Signal Jammer

It doesn’t matter where you use the drone. We do not consider whether this time is appropriate. Peep into the lives of others and take pictures. It is published online as a threat tool. Interferers provide protection for the general public. Block the signal. I avoid unknowingly infiltrating others. drone jammer can solve this problem. Unmanned aerial vehicles that are often seen in daily life are often used. We instill convenience in the lives of the general public.

Blocks all signals. You can land an unmanned aerial vehicle. The maximum blocking distance reaches 500 meters. It’s easy to learn how to use this product. China uses jamming devices to prevent drones from stealing information. Jammers protect your security. Radioactivity is low. Light and easy to use. Convenience is improved.

The UAV market drives the development of jammers

In recent years, the drone market has grown rapidly, and with the large-scale development and production of manufacturers such as Daegu, Extreme Flight and Zero Control, the price of commercial drones has been accepted and experience has been gained. Use is good. The degree of widespread use is increasing.

At the same time, there are major hidden dangers to safety. However, many countries still have blank restrictions on drones, especially “Kurohi” drones. Approximately 90% of small aircraft flying in the air peep into the privacy of others, which poses a great danger to aerial surveillance and aerial safety.

The “Kurohi” accident occurred when the drone was injured. In the second half of 2016 alone, there were hundreds of accidents, such as stopping the aircraft or falling into a large-scale event. In the near future, an accident occurred on a flight in Canada, and an accident involving injuries occurred on the Ningbo Kurofi Highway. Faced with the unmanned aircraft control gap, we will take strong countermeasures to ensure air safety.

As a store specializing in various jamming devices, we sell professional UAV jammer. The facility can shield the position signals of all GNSS satellites, including GPS/GLONASS/Galileo.

portable drone signal jammers

The ISM 2.4G and ISM 5.8G frequency bands commonly used by humans and machines have the effects of forcibly shielding the drone, interrupting the graphic position and signal, and about/return/stop. .. Tokushin Tsushin voluntarily developed an unmanned aircraft jammer, which is powerful and can reach 1-5 kilometers (depending on different usage environments).

Our company can interfere with the positioning signals of GPS satellites and at the same time shield the 2.4 G and 5.8 G frequency interference that is usually used for drones. The interruption of position and signal forces the effect of approach/return/stop.

You can easily find all the drone jammers in the wholesale store

We invite you to browse the wholesale store-a leading online interference store. In addition to ordinary jammers, this year we have also developed several new types of drone jammers, including high-power 100mw CDMA GSM 3G 4G 4GLTE 4GWIMAX drone jammer GPS VHF UHF 315MHz LOJACK jammer signal, 100w portable waterproof unmanned Aircraft signal frequency jammer, DB260P GPS 2.4G 5.8G waterproof frequency UAV jammer, 8-band GPS jammer military UAV 2.4G 5.8G signal, etc.

This is a brief introduction of our high-power 100mw UAV jammer CDMA GSM 3G 4G 4GLTE 4GWIMAX GPS VHF UHF 315MHz LOJACK interference signal.

mobile wifi jammer uav

If you need a jammer device that can block both mobile phone and drone signals at the same time, then the CDMA GSM 3G 4G portable drone jammer can undoubtedly help you.
This drone jammer is the best combination of high technology and advanced design. It has the latest design design and excellent cooling system
Inside. Its 6 frequency bands can be used individually, which means that a single frequency band can be adjusted or disabled without affecting the operation of other frequency bands. It is equipped with a car charger and adapter, which can be used directly in the car, which is very convenient for users who want to use it while driving. It benefits from a wide range of interference, which can reach up to 120 meters depending on the environment. Moreover, it can be used almost anywhere.

Next, we will introduce our 100w portable waterproof UAV signal frequency jammer.

This high quality jammer can effectively block signals within 100m. It enables automatic switching of the power supply. This high-quality jammer is designed to be used in more professional settings, such as prisons.

However, if you think that these two types are not suitable for you or just want to find a portable one, then we recommend that you use an 8-band 2.4G 5.8G military drone GPS signal jammer. The jammer is only used to interfere with 2.4G 5.8G military drone GPS signals. It weighs only 4000 grams, and the interference range can reach 35m.

You can easily find all the GPS drone jammers mentioned above in wholesale stores. If you need more jammer products, welcome to visit our website.