Can you protect yourself in this smart phone world?

Read this carefully and remember: from now on you will be watched. Does it sound awesome or scary to you? Take a good look at the stranger at the other end of the hall. Although it looks like he’s talking on his smartphone, he actually takes pictures of you using a special app. And thats just the beginning. At that morning meeting last Tuesday, when you made that outrageous joke about your new boss, your colleague’s smartphone, lying quietly at the table, recorded every word you said. Later that night when you were in the restaurant and made a flirtatious but innocent joke on the waitress, someone videotaped the entire interaction.

At first glance, it seems that there is nothing you can do to prevent things like this from happening again and again. Millions of smartphones around the world mean millions of active recording devices ready to quickly capture any word or movement. And when these recordings are made, it is no big deal to throw pictures, videos or audios on the internet and share them with everyone. Maybe there is some way to prevent all of this from happening? Let’s see. Perhaps someone smart enough will create a cloak of invisibility like in fantasy films, or companies may use clues from James Bond films and develop high-tech counter-surveillance devices that allow us to move around in public without worrying about potential privacy issues having to worry.

In fact, it might be the companies we already know well, especially since there is already some type of technology that I am talking about. For example, late last year Apple patented a new technology that allows an iPhone’s camera to be easily deactivated using infrared sensors aimed at the camera. It was developed to prevent film piracy. But even ordinary people can use such a device in advance. Todd Morris, founder and chief executive of surveillance and surveillance company BrickHouse Security, said some early technologies existed to protect people from intentional recording. For example, any woman can use a wireless camera detector in the locker room to find out if a hidden camera is installed in her clothing. Yes, that happens and quite a bit.

gsm network jammers

There are some limits, however, as the changing room or business office is completely different from the large and crowded public place. For example, if you use this Apple device that disables the camera, you will definitely make a lot of people feel harassed just to imagine some sights or to take photos to remember friends. The same is partly true for gsm jammer, but it can vary from place to place (for example, the cinema must definitely have such devices in order to make the visitor’s experience uninterrupted and thus even better).

“While you don’t wear a fake mustache or stocking over your head, no one in a large crowd can prevent them from being secretly pictured,” claimed Todd Morris. “In these cases, we need to use our technology to fight technology only at the server level using algorithms that say,” Don’t post this photo of me on the internet. “” If these companies can tag someone on the internet by simply recognizing their voice or even their face, they should be able to remove them the same way. However, when everyone starts using those Google glasses and other augmented reality glasses, we will face the new type of surveillance as they are likely to record everything they see.

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.

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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.

Fight against employees who use GPS jammers

From the paranoid conspiracy nut to the woman who is afraid of being followed by the employee who doesn’t want to be followed by her boss, the use of devices called GPS jammer is increasing. They are easy to purchase online. You can even find them on sites like eBay. Many people who use them likely assume they are legal and don’t bother to investigate the laws around them. But as an employer, how do you combat and spot employees who use GPS jammers?

gps jammer

What is a GPS jammer?

What Exactly Is A GPS Jammer And How Do They Work? A GPS jammer is a device that uses radio frequencies to transmit a signal that blocks, interferes, or interferes with GPS systems. These devices interfere with all aspects of GPS, including navigation and tracking.

The devices are usually small and most of them are easy to install. A user just needs to plug it into the lighter or car charger port (do cars still have a lighter socket?) And make sure the device is near the GPS tracker so it can interfere with the signal. It takes less than half a minute to turn them on, which makes them attractive to criminals and employees as you can simply plug them in when needed and remove them for the rest of the time.

How do I know an employee is using a GPS jammer?

The good news is, if you have one or more employees trying to use a GPS jammer to disrupt your fleet tracking system, you know. While your drivers may think the illegal jammers are making them invisible, they are instead paying more attention to their behavior.

When an employee uses a GPS jammer to jam the GPS signal, it will show up on the live tracking map or trip history map as a paused or missing trip. If you only connect your jammer during part of the journey, a line will appear between when the jamming started and when the device was turned off. Some later GPS tracking devices even have GPS interference detection. You can also create an exception rule that checks for GPS signal errors and triggers an alert or email when GPS interference occurs.

Once you discover that an employee has disrupted the GPS tracking, you can confront them. They also have a record of the GPS malfunction for disciplinary action like firing the abusive employee for cause.

Final thoughts on GPS jammers and staff

While GPS jammers are illegal, the devices are inexpensive and easy to obtain, especially online. The FCC relies heavily on the public to report the devices, but many people are unaware that it is illegal. Studies of the number of drivers using GPS jammers to hide their whereabouts from employers are inconclusive. However, their use appears to be increasing.

While most GPS jammer users are unlikely to use them to hide illegal activity, the reason behind buying, selling, or using the devices illegally is for public safety reasons. GPS jammers interfere with communication systems, navigation systems, and tracking systems, including emergency services and aviation.

It’s interesting that workers who use them think they can fool their bosses. Instead, employers can easily monitor when and if an employee is using GPS interference and record all incidents. If you are concerned that your drivers are tempted to use the devices, it is important that you monitor your reports and confront the staff who catch you.

You can also let your drivers know that GPS jammers will not help them hide from GPS tracking and that the devices can result in not only termination of their employment but also fines and jail terms for violating federal law. Ultimately, your drivers will find that the devices are simply not worth using.

To have a jammer is to have calm

I bought one and love it,” said a mobile phone buyer in our store, who is tired of silent conversations and long rock sounds. This mobile phone signal jammer can provide more privacy and keep you away from the hustle and bustle You no longer need to throw your phone out of the window. You can use it at the right time and let idiots discuss what they bought or what they got in restaurants, hospitals, movies, and other places for everyone to see. Listen Why do you need this? You can’t throw your phone out of the window, so this cell phone jammer is your best choice for quiet moments. With it, you can stay calm.

Without privacy and peace, your life becomes busy and noisy; you want to stay away from your cell phone or cell phone for a while to relax and enjoy your private time. Well, because comes with an innovative cell phone jammer-the best tool to keep the chat box, so there is no need to turn off the phone or throw the phone out of the window until you want to remain silent . At any time, if you need to get rid of the noise of your phone, just turn on the signal interference button of your phone to open a new door at a time.

portable gsm gps tracker blocker

As we all know, mobile phones have become an indispensable part of our daily lives. It is considered very useful for communication or emergency situations, you can use it for calling, playing games, searching for information, sending emails or asking for help, etc. But sometimes this device can cause many problems. Or where the use of mobile phones is prohibited. We encounter interference caused by mobile phones and hope that we can control how it works or avoid closing the phone without rejecting or closing them, so that the caller on the other end does not know that we are not ready to answer their call.

In order to solve this problem, this mobile phone signal jammer will be your best choice. This mobile phone signal jammer can provide more privacy and keep you away from the noise. You no longer need to throw your phone out of the window. You can use it at the right time and let idiots discuss what they bought or what they got in restaurants, hospitals, movies, and other places for everyone to see. listen. Why do you need this? You can’t throw your cell phone out of the window, so this cell phone signal jammer is your best choice for quiet moments.

Story of drone and mobile phone jammer on NHK News

Knowledge of drone and 4G phone jammer week frequency

By Wikipedia’s explanation, FPV (first person view) is called RPV (remote person angle) or video navigation. It is a backpass facility with a built-in wireless camera based on a remote-controlled model airplane or car model, which is a new way of playing the model on the ground while watching the screen. Over the last few years, more and more drones have been used. This type of FPV utilization is most often seen.
The drone is actually a pilot’s eyepiece surveillance, a higher version of the drone incorporates two in-vehicle cameras and a portable jammer 4g in the pilot’s eyepiece. Can be 3D view

anti uav jammers remote control

Wi-Fi Radio Blocker Let’s learn basic knowledge about week frequency

2.4GHz and 5.8GHz are the two most common frequencies for being connected to terrestrial radio transmitters and UAVs
The 2.4 GHz band is a common radio frequency. Often used to connect to ground-based transmitter axis aircraft and UAVs. If you know more about frequencies, you may know that the 2.4GHz band of unwanted cell phone jammers is also used in wireless computer networks. Therefore, it can be expected that there will be many accidents that lost control of the aircraft in densely populated residential areas with too many radio signals.

Another problem with drones is that they interfere with the vehicle’s navigation system. This is mainly due to the fact that the two transmitters worked together, one transmitting the guided wave number signal to the vehicle and the other transmitting the video signal to the driver.

The 5.8GHz band is used in 4-axis aircraft technology to avoid entanglement of the same frequency band with other RFs. This week frequency is found in the Dow Phantom model. Let’s see how UAVs work around wireless frequency issues

Phantom 1 This drone works in the 2.4GHz band. If you plan to participate in FPV, you will have to do it yourself using the 5.8 GHz frequency of the mobile deterrent jammer to avoid common problems.

If you use GOPRO or any other action camera’s unique wireless system, remember that the wireless option is turned off. Otherwise, it can interfere with the aircraft. The Phantom FC40 drone has adopted a radio frequency of 5.8 GHz. And since it has a single 3.4GHz system, you can send videos and photos to your pilot.

Phantom 2 Because this drone uses control at a 2.4 GHz radio frequency of a radio signal jammer, you have to use additional tools. Therefore, it transmits the FPV signal using the frequency of 5.8 GHz.

Phantom 2 Vision and Vision+ These two types of drones use 5.8 GHz and 2.4 GHz FPVs separately to take advantage of smartphone application connectivity and telemetry.

Portable jammer final conclusion
Therefore, if you bought a phantom UAV without a camera and other drones, you should use the 5.8 GHz frequency and FPV. By the way, it is worth noting that the RF signal is said to be a LOS mobile jammer or visual signal line. If there is no barrier between the UAV and the remote control, it will show that they cannot work. The best flying area of ​​the drone is directly visible to the naked eye. Otherwise, your drones could be damaged or lost.

Communication function suppression device. Development background and utilization of mobile phone suppression device

While convenience has improved due to the rapid spread of communication devices such as mobile phones and PHS, ringing tones of communication devices and noise caused by telephone calls have become a social problem in spaces such as theaters and halls where a quiet atmosphere is required. I will. In one hall, concerts by prominent conductors have even been interrupted. For this reason, the current situation is that operators such as theaters are strongly demanding the development of effective countermeasure technology.

To prevent ringing tones and calls from mobile phones, PHS, etc.
For this reason, there is a movement to prevent annoyance due to ringing sounds, etc. by using wireless equipment (mobile phone suppression device) that has the function of suppressing ringing sounds and calls from mobile phones.

South Korea accused North Korea of ​​jamming GPS signals

South Korean authorities said North Korea is using so-called radio jammer to suppress GPS navigation systems in border areas.

According to the authorities, it started about a month ago in several places at once along the border, but stopped last Thursday.

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This reportedly led to disruptions in the navigation systems of 110 ships and aircraft, as well as to interruptions in mobile telephony.

A spokesman for the South Korean ministry for the unification of the two countries called these actions by Pyongyang a provocation, Agence France-Presse reports.

South Korean media report that Seoul has accused its northern neighbor of jamming GPS signals for at least the fourth time since 2010.

At the same time, it is reported that, most likely, the equipment for signal suppression was supplied to the DPRK from Russia.

On Friday, the South Korean military reported that the DPRK had once again launched a ballistic missile at sea, despite international sanctions and criticism from world powers.

Last week, North Korea announced an artillery exercise simulating an attack on the official residence of the South Korean president.

How to make your own cell phone signal blocker

Cell phone signal jammer is installed in quiet areas, such as schools or universities, but… how exactly does this instrument block cell phones? These locking instruments prevent mobile devices from receiving signals from base stations. While it may sound like a complicated process, making your own phone blocker isn’t that difficult. However, you should know that in many countries (including the United States) they are illegal and subject to large federal fines, in addition to criminal prosecution. Who knows what could interfere …

phone jammers

1. Understand the principles of operation. This cellular signal blocker operates with the GSM800 frequency, since most mobile phones use it to operate. The VCO selected is a sweeping oscillator, which is very effective but can be difficult to build for beginners who do not have good RF testing equipment.
As a noise source you can use a 45MHZ clock oscillator, which is the local oscillator port located on the mini-circuit mixer. There is also an impedance matching network for the local oscillator signal to pass through. It is used to match the impedances of the oscillators and the mixer port.
The RF input (which is the mixer port) connects to the first 800MHz cell antenna, and the RF output is sent to the mini-circuit amplifier. This amplifier increases the output power by 15-16 dbm. Then the amplified signal is sent to the second antenna of the cell phone.

2. Consider how it works. All cell phones using GSM800 always separate the transmitted and received frequencies at 45MHz. So when the mobile phone tries to call, it is blocked by its own signal coming back to you! Isn’t it cool? So when the chatter of the phone irritates you, turn on the blocker so that the criminal hears his own voice on his cell phone. By the way, you can also use this cell phone signal blocker to block any cell-based tracking system that uses your GPS to track and record the movements of your car. And you can probably block improvised explosive devices that are detonated using cell phones. The mixer that is used is designed to work up to 600 MHz, but in this case it works very well. The RF amplifier does its job quite well even though it consumes additional power.

3 Use an old aluminum box as a frame for the jammer and some old UHF connectors from a Motorola cell phone for input and output.

4 Connect the RF connectors to the circuit.

5 Use a nine-volt battery and a voltage regulator to power all components. Place the battery inside and separate it from the rest of the components using foam rubber.
Flip the on / off switch at the top.

6 Screw the input and output antennas (also from an old Motorola cell phone) to the UHF connectors.

7 Your cell phone blocker is ready. Enjoy it!

YX-007, a global all-recording jammer (jammer), was born in Incom!

As the name suggests, the recording muting device is an instrument for shielding recording. In today’s society, information is rapidly developed. The problem of voice information leakage is a difficult problem to solve in the world. People’s normal conversations are recorded silently and reprocessed out of context to become a means of coercion by people with ulterior motives, which involve national security. Important information is illegally recorded and spread, becoming a security hazard!

For this reason, Tianjin Yingxun Technology Co., Ltd. has developed a sound signal jammer product with great concentration. This product can effectively prevent illegal sound collection such as mobile phones, voice recorders, video audio parts, recorders, etc. According to the needs of users, the company has developed several products covering handheld to desktop, meeting the various needs of meeting rooms and individuals.

armband signal blocker

In addition, the company’s products have obtained authoritative inspections by the National Security and Alarm System Product Quality Supervision and Inspection Center of the Ministry of Public Security and the Ministry of Public Security’s Safety and Police Electronic Product Quality Inspection Center to ensure the quality of the products.

When the YX-007 series recording muting device is recording, the recording muting device will generate random noise signals, which can produce suppressive interference to the voice signal, so that the recording equipment picks up only noise information, and cannot distinguish the voice information. Ensure the security of voice information. Widely used in: leadership offices, confidential meeting rooms, military war rooms, business negotiation rooms and other places that prevent recording.

What are the advantages of installing a mobile phone signal jammer in an auditorium?

The rapid development of mobile communication has brought great convenience to people’s work and life, but the side effects caused by mobile phones have become increasingly apparent. The unsafe factors of mobile phones are mainly reflected in the fact that in important secret-related places such as agencies, factories, enterprises and institutions, intentionally or unintentionally dialing a mobile phone or forgetting to turn it off may cause a leak at any time. In some important secret-related occasions or meetings, the use of mobile phones is prohibited. At this time, we will use the cell phone jammer, which is a green new information security product that is newly developed using modern high-tech. The principle is similar to that of the communication signal source. A fan-shaped shielded space is customized according to the power of the jammer, and the normal wireless connection between the signal source and the mobile phone is cut off, so that the mobile phone in this space cannot be received or called. To achieve the purpose of compulsory banning of mobile phones, so as to ensure the safety and confidentiality of the scene. The appearance of the equipment is simple and elegant, solemn and beautiful; efficient and intelligent cooling and heat dissipation system, stable performance, safe and reliable; built-in professional directional antenna, without external antenna, can be directly powered on by the mains; good electromagnetic compatibility, integrated design and installation of the whole machine Convenient and simple to use and manage.

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Jammer-mart mobile phone signal jammer detailed parameters: simple and elegant appearance, solemn and beautiful. Frequency band: CDMA/GSM/DCS/PHS/3G/4G/2.4G (WLAN/WIFI/Bluetooth)
Antenna form: Ten independent systems with built-in professional directional antenna
Effective shielding range: 5-40 meters@-75dBm (directional)
Start mode: manual switch
Continuous working time: ≥24 hours, high stability
Applicable places: suitable for secret-related medium and large conference rooms, auditoriums, conference venues, hotels and other places
Product size: 315*275*135mm (length * width * height)
Weight: about 5Kg

How to use: 1. Open the package and check whether the parts are in good condition; 2. Connect the power adapter and power cord to the port on the right side of the fuselage; 3. Insert the plug into the 220V mains socket; 4. Place the shield on On a plane above the ground 180cm (or hanging on a vertical wall), make sure that the front panel is tilted forward 3~5 degrees; 5. Press the switch on the right side of the fuselage, and the jammer can start to work automatically.

Key technical solutions and implementation methods of important functions:

(1) Broadband and high power output: solve the problem of wideband power gain increase, and power stability control after gain increase, waveform in-band smoothness and out-of-band suppression, control of out-of-band spurious indicators, and broadband output standing wave ratio Indicators (some indicators are repeatedly adjusted before the R&D plan is finalized, and omitted during normal production and after product quality is stable).

(2) Shielding between multiple systems: In the small space of the shielding instrument machine, there are 6 systems of CDMA, GSM, DCS/PHS, 3G1.3G, and 4G1.4G to transmit high-power, wide-band signals at the same time , Solve the intermodulation index generated between these multiple signals (repeatedly adjusted during research and development, omitted during production). B. Slow start circuit technology: The use of slow start circuit can avoid the sparking phenomenon caused by mechanical switches, and the integration is high and stable. C. Long-term uninterrupted work: The equipment adopts high-quality components, metal casing, and good heat dissipation performance. It can work uninterrupted for 7×24 hours. Long-term work will not cause damage to the performance of the equipment.

Principles of signal jammers in those examination rooms

In the annual college entrance examination and entrance examination, major operators will issue a warm reminder: In order to ensure the smooth flow of signals around the campus, the operators have arranged in advance for communication engineers to test the entrances and exits of each test center and the rest area of ​​the parents accompanying the test, and conduct tests on nearby base stations. Software and hardware expansion to ensure the communication needs of parents in the test area during the test. Except that the signal is blocked during the exam, we have done our best to ensure that your communication is smooth. Every year in the college entrance examination, in order to prevent exam fraud, all communication signals in the examination room will be shielded. There are cell phone jammer in the exam room. Common signal jammers: At the same time, there is a radio monitor outside the exam room that can help fix those frequency bands that the mobile phone jammer can’t take care of. Electromagnetic wave signals, real-time monitoring of radio wave signals from unknown sources.

The working principle of the signal jammer used in the college entrance examination is to obliterate the useful electromagnetic wave signal in a large number of useless signals. Under normal circumstances, when we use a mobile phone, the mobile phone is first connected to the carrier’s base station, and the radio wave signals sent by the two parties come and go. However, when the jammer is turned on, gongs and drums will be beaten around the mobile phone, sending out a noise radio wave signal that is many times larger than the received base station signal power. The mobile phone can’t hear what the base station is talking about and cannot receive the base station’s signals normally. The connection was severed. Whether calling, texting, or other various functions, they are all in a paralyzed state.

jammer signal device Powerful

This is why the signal jammer affects the call and Internet access of mobile phone users around the examination room. The working principle of the jammer is as follows: in a certain frequency range, the mobile phone and the base station are connected by radio waves, and the data and sound transmission is completed with a certain baud rate and modulation method. Aiming at the above-mentioned communication principle, the jammer scans from the low end frequency of the forward channel to the high end at a certain speed during the working process. The 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. The mobile phone is manifested as a search network, no signal, no service system and other phenomena. Eventually, the mobile phone has no signal and cannot receive text messages or calls.

The current mobile phone signal jammer is full-band. It can shield all the 2G 3G 4G signals, 2.4G WIFI signals and Bluetooth signals under all the three operators of China Mobile, China Unicom and Telecom. Its principle is sent by itself. The frequency interferes with the mobile phone receiving the frequency from the base station and wireless router, so as to achieve the purpose of shielding them.