Tag Classroom | Blog Jammer-mart | Blockerss Classroom- News About Jammer-mart signal jammer blogpage 2

Application place of portable signal jammer

Portable (drag box type) wireless signal jammer, can be used for important leaders/VIP VIP security, individual combat, special police team, EOD team, anti-terrorism unit, anti-drug unit, explosion-proof team, security checkpoint, administrative law enforcement, hostage negotiation, Various applications such as border control and military security forces. It can be used both portable and in-vehicle. When used in vehicles, the vehicle-mounted dedicated antenna can be configured according to customer requirements.

A powerful 4G 5G jammer

Effectively shield all 2G, 3G, 4G, 5G and WIFI signals of China Mobile/Unicom/Telecom;

12 RF modules work independently, 12 channels output, each channel RF power 2-3W;

Especially strengthen the power promotion for 3G, 4G, 5G, and fully ensure that the output power of each channel reaches 2W;

Possess future expansion space for 6G or other wireless frequency bands; more output channels (frequency bands) can support 24 channels;

The exquisite structure design, with invisible handle grooves embedded in the back, is not only convenient for carrying, but also suitable for wall-mounted fixed installation;

Adopt industrial-grade switching power supply, built-in precision voltage regulator circuit, even if the voltage fluctuates greatly, it will not affect the normal operation of the host;

The main body of the jammer adopts a fully enclosed protective shell design, which fully takes into account the problems of waterproof, dustproof and vandalism in special sites;

It is resistant to high temperature environment and can quickly transfer heat to the heat dissipation base (built-in ventilation duct heat dissipation fins) to avoid local heat accumulation;

Professional circulating air duct type heat dissipation base structure, the lower end quickly sucks in natural wind, and the upper end removes heat on both sides, ensuring stable operation of the equipment for 24 hours;

Built-in 4 ultra-quiet fans draw out hot air, and the fan speed can be adjusted; the equipment is completely noise-free during working hours;

Satisfy the requirements of continuous startup and use for many years, stable performance and long service life;

Harmless to human body. Complete product inspection and test reports; passed the electronic product safety test of the Ministry of Public Security;

The product has passed the environmental monitoring center’s electromagnetic radiation safety test;

The product has passed the electromagnetic radiation safety test of the provincial occupational health test center;

The extended interface and networking modes with intelligent networking linkage function include: power carrier + wireless, or: TCP/IP standard network communication;

Meticulously developed high-tech product MDPB-40C jammer

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

12 Antennas powerful Jammer

Within a certain frequency range, the mobile phone and the base station are connected by radio waves, and data and sound transmission are completed with a certain baud rate and modulation method. The jammer scans from the low end frequency of the forward channel to the high end at a certain speed during operation. This scanning speed can cause garbled interference in the message signal received by the mobile phone, and the mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station and achieve the purpose of shielding the mobile phone signal. The mobile phone appears to search the network, no signal, No service system, etc.

For the shielding of the internal area of the building, the distance between the residents (schools) and other public facilities in the area where the building is located should be considered, and the distance and signal strength of the surrounding communication rack base stations should also be referred to, so as not to affect the normal communication of mobile phone signals in the surrounding public facilities. , Our company selects MDPB-25W indoor host product for the shielding in the building to carry out the network shielding of the indoor antenna mode.

What is the reason that the signal jammer does not work or the effect is poor?

There are many jammers on the market today, but many customers do not know how to use them, so the jammers often do not work or have poor results. Do you know what is causing this phenomenon? Together with signal interference shielding Let’s find out about the device manufacturer Chengdu Saiyue Communication:

1. You must order a suitable shielding device according to your needs, which is more important

①If you want to block mobile phones, then you have to choose 2G 3G 4G full frequency signal jammer. At this point, you must consider whether you want to add additional functions such as GPS (satellite positioning) or WIFI (wireless Internet access)!

②Choose the right power supply: portable jammers have low power, easy to heat, desktop jammers have high power and good heat dissipation! The shielding range of desktop jammers is longer!

③If you want to block the GPS track, you need to choose a two-in-one jammer (low-cost 2G GPS jammer)) at least! Because when you only use the mini GPS jammer to block the GPS, it will be automatically activated by the built-in SIM card Realize GPRS GSM positioning.

16 Antennas Signal blocker

2. After receiving the portable jammer with battery (desktop jammer without battery), it must be fully charged within 6-10 hours;

3. All antennas must be installed according to the markings (1-1 2-2 3-3 4-4 5-5 6-6 7-7 8-8 or GSM to GSM GPS to GPS…). More importantly, don’t open the shield without installing the antenna!

4. Interference range: position signal strength <= -75dBm. The interference distance will vary according to the signal strength and location. If you are close to the signal base station, the effect of the jammer will be very poor!

Talk about the summary of experience when installing jammers in prisons

A. Most prisons have guard towers and observation towers to protect prisoners. The height of the towers is mostly higher than the prison buildings. If the antenna height is higher than the tallest building, it will be easier to block cellular phone signals in the air. Therefore, it is very easy and more protective to install the prison shield on the observation tower. Moreover, engineering costs can be greatly saved. The installation process can be improved.

B. If there is no prison guard tower or its use is not allowed, we suggest that you can choose a fence. If the height of the wall is higher than the tallest building, solution a can be used. If the wall is lower than the tallest building, a fixing bracket must be installed on the wall. The height of the support must be 3 to 5 meters higher than the tallest building in the prison. The higher it is, the easier it is to install the antenna. In this way, the construction cost will be higher than solution a. If it is a larger prison, more shields must be installed to adopt solution a and solution b. We recommend installing wireless jammer with omnidirectional antennas on some buildings in the middle of the prison to increase the shielding range and reduce the amount of interference.

5G frequency jammer for sale

C. If all guard towers, prison buildings and fences in the prison are not allowed, we must recommend the construction of some fixed cylindrical towers or signal towers. Engineering costs will be more difficult and expensive. The whole building will be much slower. To some extent, once other solutions cannot be adopted, this is our last choice.

Tip: If you use plan B and plan C, please pay attention to install lightning rods. The height of the lightning rod must be 2M higher than the antenna. jammer-mart has many years of experience in the installation of signal jammers in prisons. It is also very experienced in projects in other places. At the same time, you can choose the jammer products that suit you on our website.

How to shield a base station within 800M

As we all know, the base station is to enhance the signal, and the shield is to shield the signal. The two conflicts with each other. This is a headache for many government agencies that need a shield. Today, I will show you how a prison with base stations around is fully shielded through our scheme.

It is well known that the prison cannot have a signal, but there is a base station within 800 meters of the prison. The prison has tried many electronic jammer devices, but the effect is not satisfactory. There are always signals in many places, which brings great risks to the prison. Our technicians personally took the equipment to the site to investigate the signal strength and site conditions.

desktop signal blocker

(1) There are many residents around the prison, especially in the southeast direction. The shielding project cannot affect the normal communication of the surrounding residents. Therefore, the selection of the shielding project and the design plan require precise and accurate shielding, which is difficult to design.
(2) The new prison administration office building near the factory area and the old prison administration office building in the living area belong to the police office area and cannot be shielded in principle
(3) There is a large communication tower at the location of the prison office building, which will inevitably cause strong mobile phone signal strength in the entire supervision area, and the field strength value is much higher than that of Canggu. The design of the shielding project is difficult.
(4) There is also a communication tower about 800 meters northwest, which will superimpose the signal strength of mobile phones in the supervision area.

Installation case of wireless signal shielding equipment in meeting room of Chengdu Media Group

Chengdu Media Group was established in November 2006, with assets of 13.1 billion yuan. The overall economic scale has ranked among the top 3 national news, newspapers and publication groups for 5 consecutive years, with more than 9,100 employees. There are 18 directly under the group’s direct management units. The main units include Chengdu Daily, Chengdu Commercial Daily, Chengdu Evening News, Daily Economic News, Full Search News Website, Pioneer Media, Public Transport Media, Metro Media, and Tianfu Cultural Communication.

desktop mobile phone blocker

Xin Technology Co., Ltd. successfully won the construction contract for the wireless signal shielding project of the office meeting room of Chengdu Media Group, and provided wireless signal shielding equipment for the office meeting room of Chengdu Media Group by installing the cell phone signal jammer of Chengdu Saiyue Communication’s own brand Shield system services. The project was successfully accepted during the measurement, design, construction, and test stages. It shielded the 2G, 3G, 4G mobile phone signals, WIFI, and Bluetooth wireless signals of China Mobile, China Unicom and Telecom, and successfully achieved the expected signal shielding effect. Testing and approval.

Use of GPS jammers for personal use

You can easily order GPS signal jammer from the Internet, and you can protect privacy and prevent third-party tracking. These products are beneficial and should be purchased. For example, certain VIP roles can prevent illegal positioning by GPS trackers.

GPS blocker

Of course, in North America and Europe, such devices are also needed to protect privacy. Because you don’t know when others will follow your vehicle. GPS trackers are easy to buy.

GPS jamming technology can also be used to manage drones. Professor Todd Humphreys and his team have used GPS deception technology to control an unmanned drone in Austin. They used a small helicopter to destroy the GPS system of the drone, and then provided the drone with the coordinates to reach the destination.

In positioning applications, we have a common problem: instead of trying to position the transmitter relative to ourselves, we try to position ourselves relative to a series of transmitters. Of course, we use the same technology: GPS is a good example of a TOA system.

The loss of commercial aircraft GPS functions will certainly lead to catastrophic air disasters, but Norwegian Intel believes that Russian GPS interference with Finland/Norway is neither the intention of the Russian government nor the intention of the Russian military.

Those mobile phone problems can be solved by jammer

The obsession with mobile phones worries both parents and schools. A middle school found a “new solution”: a mobile phone signal sign is being installed on campus, which can be turned on every night, so that students can’t play with mobile phones at night.

The school intends to block cell phone signals so that students can study, rest and break the idea of play. Mobile phones and games are almost the biggest challenges in education today. A middle school teacher wrote a recently popular mobile phone game, and said that the game has gradually turned mobile phones into “game consoles.” His students also said painfully: “I can’t control myself!”. In order to get students out of the predicament, some unconventional management methods must be used, such as prohibiting the use of mobile phones and playing games. The school needs to do something about this, and shielding the phone signal is much more effective than calling the teacher to inspect the house and adopt strict management measures.

3g jammers

The work of a gsm jammer is very simple, because it affects the frequency of the telephone signal and the frequency of the signal. In recent years, signal interference has been used in various inspection halls, schools, gas stations, courts, libraries, conference centers (halls), theaters, hospitals, government agencies, etc. Even some companies and families are installing them. Interference equipment can be easily purchased on the Internet.

In recent years, with the rapid development of modern communication technology, the use of high-tech fraud methods in examination rooms has emerged one after another, from pagers to mobile phones, to mobile phones, to today’s digital products, and college entrance exams conducted through fraud tools. For cheating tools such as rulers, rubber, spectacle cases, stationery bags, watches, and mineral water bottles, examinations have been carried out in different countries. In order to prevent fraud, the authorities have effectively prevented and stopped fraud in the examination room by using mobile phone locks, metal detectors, radio signal jammers and warning suppression devices.

Delhi government to install cell phone jammers in exam centers

It is common for jammers to be installed at investigation sites.

The AAP government has decided to install signal jammer to prevent high tech electronic equipment from being cheated on exams that are held for government agencies in Delhi. Stop being cheated during exams. The increased use of electronic devices in written tests has made the city government concerned about the possibility of incompetent candidates joining the government. “After the Delhi Subordinate Services Selection Board (DSSSB) successfully used the jammers in an auditor test a few months ago, they decided to use the device in their critical tests,” a government official told IANS.

smartphone signal blocker

The DSSSB was founded in 1996 and conducts written tests and interviews for middle and lower positions in the state government and in city authorities. A cell phone jammer is an instrument that prevents cell phones from receiving signals from base stations. When used, the jammer effectively disables cell phones. It transmits on the same radio frequencies as the mobile phone and interrupts communication between the phone and the base station of the mobile phone in the tower. “Nowadays students are using technology to pass exams which is the other side of technology. They remember ‘Munna Bhai MBBS’, don’t they,” added the official, referring to the Bollywood film in which the protagonist is featured – a local crook – is shown undergoing a medical examination with the help of a small earphone. “Applications were invited by various phone jammers service providers,” said one official.

According to the tender, the agency must ensure that a sufficient number of jammers are deployed and installed to block cellphone and blue tooth services in the exam center. Another requirement is that jammers, with or without a power supply, work without technical interference for the entire duration of the tests. There are various gadgets available in the market that can be customized for salwar kameez sets, sports bras, jackets, shirts, and regular buttons. In May, the Supreme Court ordered the center to install telephone jammers in exam centers to prevent paper leaks and other abuses. The guideline was created after an alleged fraud in the All India Pre-Medical Test (AIPMT). Many aspirants had SIM cards sewn to their shirts and had bluetooth devices. Over 350 calls were made to the various exam centers.

The un-fictionalization of cell phone jammers

Ten years after the then fictional invention (in our column in Byte magazine) of the A Brief Cell Phone Jammer, the New York Times reported on November 4, 2007 that the device is now pretty real? and that it’s used by people who like to use it: there seems to be a lot of stuff out there.

Andrew reached into his shirt pocket and pressed a button on a black device the size of a cigarette pack. It sent a strong radio signal that interrupted the imposter cell phone transmission? and everyone else within a 30 foot radius.

She talked into her cell phone for about 30 seconds before realizing that no one on the other end was listening? he said. His reaction when he first discovered he could wield such power? Oh holy Moly! Liberation.?

As cell phone usage has skyrocketed, making it difficult to avoid half a conversation in public places, a small but growing group of rebels is turning to a blunt countermeasure: the cell phone jammer, which knocks out nearby cell phones.

armband signal blocker

Here is our description written in 1997. The device was called “apoptosis”:

The word “apoptosis” comes from biology: It means “programmed cell death”. What is so wonderful about apoptosis? Just like that: it interrupts any cell phone call within earshot of you.

Apoptosis has an effective range of 15 feet – wide enough to get the job done, narrow enough not to disrupt innocent neighbors’ phone lines.

Apoptosis is small and inconspicuous. It fits on a keychain. It looks like a worry pearl. If someone nearby starts to snap, snap, snap a cell phone, you just assume an innocent expression, squeeze your little “worry pearl” and see immediately that your wish is coming true: the idiot’s cell phone connection dies.

Right after the column came out, readers bombarded us with questions about where to buy it? oh, then-fictional? Product. The first non-fictional cell phone jamming products (as far as we know) came out a year later, in 1998, from a company in Japan and another from a company in Israel. The Times article mentions a company, https://www.jammer-shop.com/de/, that now sells a variety of such devices.