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How to prevent eavesdropping in the car?

The ever-changing technology also makes it easier to expose people’s privacy to the public’s vision. Recently, a small gsm eavesdropping on the market is very popular. It is understood that many buyers install this type of eavesdropping device in the car. Many people also responded to our colleagues that they were afraid that their private conversations would be eavesdropped. This kind of eavesdropping equipment can be installed in a very hidden place and is not easy to be found. Even many professional anti-eavesdropping equipment cannot be detected. What is it? The reason?

It is understood that this gsm bug is only the size of a coin. It can be placed in the car, or it can be attached to a certain place on the car using a magnetic device. What is more, it can be placed in a place that is difficult for people to detect (such as the instrument In the built-in electrical equipment), the driver’s conversation information can be recorded unconsciously. Of course, the eavesdropper may also receive a car battery or a large-capacity battery for continuous GSM tracker. On the other hand, this makes the threat more persistent and keeps the privacy of the eavesdropped being stolen. This GSM bug can be placed in a hidden place in the office or at home, such as under the desk or built-in in household electronic devices such as alarm clocks, TVs, and chargers. It is very hidden. The power supply under the table may be cut off and may be unintentionally discovered, but it is not only difficult to be detected when it is built into an electrical appliance, but it can also be directly used for indefinite long-term work. Illegal tracking of vehicles, eavesdropping of conversations in vehicles, and eavesdropping of private households are illegal acts and a great threat to personal privacy, and should be paid attention to.

Why is this kind of eavesdropper so difficult to detect? Because it is an analog mobile phone signal, it is mixed in many mobile phone signals, and it is not easy to detect. Even if some professional detection equipment is not operated by someone who is very familiar with wireless signals, it may be No results are found. When the eavesdropper dials the phone card number in the eavesdropper in a remote place, the eavesdropper starts to work, and the surrounding sounds are transmitted to the eavesdropper through the mobile phone signal. Tracking and positioning. It is always threatening people’s normal work and life.

For such a very concealed eavesdropping device, should it be located and swept away? The following is a practical anti-eavesdropping GSM jammer recommended by the security experts of Shenzhou Mingda, because the working principle of gsm eavesdropping device is similar to that of mobile phones, so The mobile phone detector can well detect the source of such gsm bugs, so as to find the eavesdropping equipment, remove hidden dangers, and completely eliminate the threat of eavesdropping and tracking. It can find hidden mobile phones in the environment (turn on or off, even without batteries). It is a short-range mobile phone scanner, which is different from traditional metal detectors: it can detect the common material of all mobile phones, not just for metal, which can reduce false alarms for other metal materials, such as watches , Keys, coins, belt buckles, etc. This anti-eavesdropping detector is very easy to use. It can quickly complete environmental security detection and find hidden mobile phones in time (even if they are covered by metal or packages can be detected). The device is easy to operate, with LCD interface display, and 9V battery power supply, which is convenient to carry. It can help car owners to detect eavesdropping on their cars.

Drones and jammers are the biggest threat to airports

The Ministry of Civil Aviation has proposed a draft regulation that allows the use of drones for any purpose, but with certain restrictions.

While the Ministry of Civil Aviation has legalized the use of drones, government agencies are testing jammers that can disable drones that can pose a threat to safety.

A device designed to block drone communication systems is currently being tested at Delhi airport. Helicopters consisting of the Central Industrial Security Force (CISF) and the National Security Guard will also be dispatched as back-up personnel for emergency situations.

“Although the proposed guidelines for civil aviation state that the five kilometers around the airport is an uninhabited area, regulatory violations cannot be ruled out. Drones are typically managed by operators through a system of remote communication. The equipment we are testing will block the communication system., After that, the operator will no longer be able to control the drone.

Jammers Portable Handheld

The Home Office (MHA) plans to enact legislation to prevent the misuse of drones, especially near airports. Although airport security forces have been advised that drones are considered a potential security threat, no guidance has been issued on how to react when such aircraft are sighted nearby.

“Right now, drones are the biggest threat to airport security, with the exception of wave jammers. They are frequently observed and – currently there is no provision for shooting down flying objects. The CISF provides security, but has yet to decide who will deal with air threats. The Aviation Ministry will oversee the drone actions, but MHA must call for safety. ”

The source said MHA will issue a notice applicable to airports across the country.

The Ministry of Civil Aviation has proposed a draft regulation that allows the use of drones for any purpose, but with certain restrictions. Asked about safety, Aviation Minister RN Choubey said technology is being developed to neutralize rogue drones.

The ministry designated airports and international borders as unpopulated areas and stipulated that their use for commercial purposes requires special permits from aviation regulators. However, government agencies will not be bound by these guidelines.

The center invited the public to make suggestions within 30 days, then will make the necessary changes by December 31 to legalize the use of drones, and use drone jammer to prevent them if necessary.

5G mobile phone signal jammer parameters

5G signaling is the hottest topic of the year, and the construction of 5G base stations across China has begun to implement 5G signal coverage. How convenient is it to use 5G signals? On the morning of May 10th, Hunan 5g Digital Industry Association and 5g + started the ceremony at Changsha Meishif International Cultural Arts Center, started the ceremony, Hunan Mobile and Xiang River, Hunan University, Xiang River Hospital, Banda Environment, Cool Wow Banda Partners have signed strategic agreements such as the establishment of a general 5g digital industry alliance to speed up the development of 5g application innovation. On the experience site, Revo, general manager of Hunan Mobile Changsha Branch, also passed the first 5G video call with Changsha City’s Tianxin District Committee standing member and Changsha City’s deputy director, State Shijun. .. We can think of how convenient 5G will bring to people.

As a new information technology infrastructure capable of providing at least 10 times the peak rate of 4g, transmission delays of millisecond, and billions of levels of connectivity, 5G is an automated driving, big health medicine, industrial internet, city of wisdom, Internet infrastructure for building things, high-definition video application scenarios to drive the Internet, big data fusion, artificial intelligence, and the depth of the real economy are critical to supporting high-quality development. is. It also brings about the rapid development of science and technology.

“3G, 4G, probably low and long wavelengths, at which high frequencies can resonate with some of the vibrational frequencies of water molecules and oxygen.” After the advent of 5G, future technological advances in 5G Not only do we need to enjoy the convenience and convenience, but we also need to pay attention to the effects of electromagnetic waves on the human body.

desktop cell signal blocker

China Mobile and China Unicom have issued a license to use mid-low frequency test frequencies in 5G systems. Among them, China Telecom and China Unicom have obtained licenses for test frequencies in the 3500MHz band, and China Mobile has obtained licenses for test frequencies in the 2600MHz and 4900MHz bands. Therefore, it is safe to use 5g jammer within the range. China Unicom and China Tele have secured a more international mainstream spectrum, but the story of China Mobile is much more complicated. In terms of subdivision, China Mobile has acquired 5G test frequency resources in the bands 2515mhz-2675mhz and 4800mhz-4900mhz. Of these, 2515-2575mhz, 2635-2675mhz, and 48800-4900mhz bands have been newly added, and 2575 bands have been added. -2635mhz prioritized China Mobile’s existing td-lte (4G) frequency.

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.

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.

Have you got the skills of smart phone signal jammer?

The function of each mobile phone signal jammer is different. Of course, the smart phone signal jammer also has its unique functions. Below, we will solve its mystery for everyone. This

The reason why the jammer is recognized by everyone is that its skills are very powerful: we understand that it uses a unique 4G algorithm to interfere, which greatly improves the efficiency of interference and blocks

Any possibility for the mobile phone to transmit signals outside. At the same time, since the technology it uses is a communication-specific die-cast aluminum + engineering plastic chassis, it can support AC220V adaptation to

DC12V power supply. Therefore, our cell phone signal jammer can be used in many large places. It also has a skill that is unmatched by other products. It has green and energy-saving features.

WIFI5G 433 315 MHz Cell Jammer

Function, it uses 2W power, low radiation, low power consumption. Its appearance design is also very reasonable, each button has a corresponding function, you can adjust it at any time according to your needs, easy to operate, and very usable. The unique thing about this shield is that it has very superior performance, its volume is very small and does not occupy a lot of space. Its weight

The volume is also very light, very easy to carry, and easy to install. These are the unique skills of our products, have you got them?

Signal-oriented approach to signal congestion

Signal interference is an increasingly popular means for criminals to steal vehicles and cargoes, with truck hijackings costing the country an estimated R3 billion in 2015.

In almost every reported hijacking case, the truck’s tracking signal was not available because the suspects involved had used signal jammers.

The scourge of signal congestion in South Africa was brought to the public through carte blanche exposés and the much-noticed blocking of cellular communications during the “State of the Nation” address in Pretoria in 2015. The latter event, in particular, helped create greater public awareness and got companies like Ctrack to innovate and fight back.

However, signal jammer continue to be used in South Africa as they are easy to obtain and more affordable. As a result, hijackers today employ a wide range of jamming systems and devices, some of which are large and cumbersome and some of which are small and portable. This is despite the fact that possession and / or use of signal jamming devices is illegal under ICASA in South Africa.

High tech Phone Wifi interceptor

Big or small, these systems typically prevent telematics devices from transmitting their location to tracking service providers.

Hein Jordt, CEO of Ctrack Fleet Management Solutions: “Hijackers use a variety of jamming systems to block tracking devices from communicating over cellular networks or satellite. Once blocked, they usually hijack the vehicle or collaborate the driver together to take it to a place where they can unload their valuable cargo. ”

Transport and logistics companies know it is important to protect both trucks and their cargo from theft. According to the South African Insurance Crime Bureau, truck hijackings are primarily about the goods being transported, with FMCG products such as tobacco currently in high demand. Either way, the fact is that the majority of the trucks are hijacked for their loads.

Fleet owners and operators need a total transportation solution that combines fleet management with the ability to detect signal congestion. The good news is that today there is a solution that can provide both trucks and trailers with effective stowage protection.

To attenuate signal jammers, alternate frequencies to those that are being blocked must be used. This is where the DSSS (Direct Sequence Spread Spectrum) technology used by Ctrack comes into play. DSSS does not use any other format like GSM to communicate. Instead, it transmits messages with a bandwidth that exceeds the bandwidth required by the message signal.

This spreading of the transmitted signal over a wider bandwidth makes the resulting broadband signal appear as a noise signal that allows greater resistance to intentional and unintentional interference. DSSS is also designed to carry signals from difficult radio frequency ranges and can penetrate through concrete, making it ideal for urban, retail and financial institutions environments.

In March, Ctrack announced that the interfering signal detection solution would be part of a combined fleet management package. “We are now able to offer our customers the option of installing a gsm jammer fault detection module as part of their fleet management system to ensure continuous visibility and to combat vehicle theft,” said Jordt.

With the fleet management component, fleet owners can monitor driver behavior such as B. Monitor hard driving, accelerating, braking, cornering and driving too fast. Significant fuel and maintenance costs are also saved by monitoring factors such as engine performance and fuel consumption.

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.

Can the communication signal be retained by using a jammer?

Many people do not understand the jammer, so using a jammer in an emergency causes the cell phone signal to drop and the outside world cannot be contacted.

Are you planning to use a mobile phone wifi jammer in your building or place of business? If so, you’re probably curious about how they actually work – and what effect they have on cell phones.

desktop wifi signal jammers

When using a jammer, a low power radio signal is broadcast. This signal is able to cut off the communication between the cell phone and its cell base stations. When this happens, all mobile phones in the affected area display “No service” and incoming calls are blocked. To the caller, it just looks like the cell phone is turned off.

Although jamming of mobile phones prevents them from receiving service, some predefined areas are not blocked. By default, these frequency zones include:

* EMS bands

* Fire bands

* Police tapes

* Medical services pager bands

Therefore, when using active jamming, you don’t have to worry about putting yourself in danger or putting someone else in danger. Police, fire and EMS radio users as well as pager users can still communicate, but your clients, clients or students will not be disturbed by non-urgent phone chatting, providing a calm environment.

Once the jammer is turned off, the phones will automatically re-establish communication with the cellular base stations – and those affected by the jammer will be able to receive cellular service again.

It should be noted that using a jammer does not damage the phones in any way. It should also be noted that the same situations apply to any model of GPS jammer that we also offer.

All parties including the media are prohibited from flying drones

All parties, including media practitioners, are reminded not to fly drones anywhere in the country while the Movement Control Ordinance (MCO) is enforced through May 12.

Supt Rasha Azaldin Shafii, chief of the drone unit of the Royal Malaysia Police, Air Operation (PGU), said flying drones without permission from the Malaysian Civil Aviation Authority (CAAM) is a violation of the Malaysian Civil Aviation Ordinance 2016 (MCAR 2016).

“Anyone who operates a drone without a permit can be punished with a minimum fine of 50,000 RM or a prison sentence of three years for individuals, while companies can expect a maximum fine of 100,000 RM.

“Please note that not all parties are allowed to fly drones unless they have permission from CAAM and the police,” he told Bernama.

He said throughout the implementation of the MCO, police had discovered four cases of illegal use of drones across the country.

“Further investigations into the cases are ongoing and police are ready to use the UAV jammer device to ensure that no drones are flown anywhere without authorization,” he said.

portable drone signal jammers

According to Rasha Azaldin, drones will be used specifically for nationwide aerial surveillance, including in areas under the expanded MCO.

“The use of drone technology has definitely been effective in making announcements and bringing back memories of COVID-19 throughout the MCO period,” he said.

On April 7th, CAAM authorized the PGU Drone Unit to operate the unmanned aircraft system or drones for surveillance and enforcement purposes during the MCO.

CAAM also announced that the drone operation would be led by the police in collaboration with the Malaysian armed forces and three private drone companies.