Hot Sell Signal Jammer for Cell Phone Wifi GPS

Hot Deals NO1
It is a portable 4G jammer with 8 antennas for home, office and school. It can span 30 meters. This portable jammer includes CDMA / GSM / WIFI-2.4G / 3G (UMTS) / 4G / 4G (LTE) / GPS / LoJack / DCS / PCS frequency coverage and provides an effective protection area without devices. The 8 antenna portable jammer is your best choice.
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Hot Deals NO2
The latest 16-wire portable jammer with nylon cover can interfere with all types of Android phones, tablets, smartphones, iPhones, Win Phones, etc., using 2G, 3G, 4G 5GLTE and CDMA 450Mhz, Block LOJACK GPS, Wi-Fi 5G , Walkie-talkie UHF/VHF and 315, 433, 868 and other RF signals are very popular in 2020 and beyond.
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Hot Deals NO3
The latest all-in-one design portable wireless 5G signal jammer, 16 bands jamming all types of Android phones, Tablets, Smart Phones, iPhones, Win phones etc. that use 2G, 3G, 4G,5G and CDMA 450Mhz, Block LOJACK GPS, Wi-Fi 5G, Walkie-Talkie UHF/VHF and RF signals like 315, 433, 868 is popular in 2019 and in years to come.
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Hot Deals NO4
World First 24 Antennas all-in-one design wireless Jammer with nylon cover for jamming all types of Android phones, Tablets, Smart Phones, iPhones, Win phones etc. that use 2G 3G 4G 5G and CDMA 450Mhz, Block GPS, Wi-Fi 5G, Walkie-Talkie UHF/VHF and RF signals like 315, 433, 868,915,LORA,LOJACK etc. Battery capacity LCD display is popular in 2022 and in years to come.
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Hot Deals NO5
The 3G 4G WIFI jammer is compact and lightweight, easy to carry and use. The integrated fan has an excellent cooling system for long-term operation, good heat dissipation and an attractive appearance. It is equipped with a car charger and an AC charger, which are among the most popular mobile interference devices in the world.
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Hot Deals NO6
This is a newly designed 22-antenna integrated jammer, which brings us a powerful jamming capability. It can cut off all 5G 3G 4G cell phone signals, Wi-Fi2.4G/5GHz GPS LOJACK, RF 315 MHz 433MHz, VHF UHF walkie-talkie and wireless earphone/microphone signals. The power of the full-band jammer is enough to block all signals, and the jamming radius of the jamming frequency can reach 40 meters.
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Hot Deals NO7
It has the characteristics of large jamming range and multiple jamming frequencies bands. It can block all cell phone signal(GSM/CDMA, 3G, 4G, 4G LTE), Lojack, GPS, WiFi, Walkie-Talkie UHF/VHF and RF signals like 315 MHz, 433 MHz, 868 MHz.
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Hot Deals NO8
The jamming radius of all 16 bands can be manually adjusted. In this way you can select the frequencies you would like to jam at particular time, while not jamming other frequencies. Ther is also LED indicator installed for each frequecny showing the status of band.
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Hot Deals NO9
This powerful new radio jammer is designed with 12 antennas and has multiple functions. It can cut off all 3G, 4G, 5G mobile phone signals and LOJACK GPS WiFi signals. 79 watts of high power can be adjusted, and the interference radius can reach 80 meters.
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Recommended Popular Common Signal Jammer Device

Latest 16-Band 5G Jammer All Mobile Phones GPS WiFi Blocker

Latest 16-Band 5G Jammer

The latest 16 bands with all-in-one design cell Phone signal Jammer with nylon cover for portable, jamming all types of Android phones, Tablets, Smart Phones, iPhones, Win phones etc.


5-Band Portable GPS Jammer With GSM 3G 4G WIFI Blocker

WIFI signal blocker

This 5 bands jamming device has a very portable design, and it is very convenient to remove the antenna. There are separate frequency switches that can be turned on or off as needed.


2022 New 10 Antennas Portable Cell Phone WiFi GPS Jammer

10-bands Cell Phone WiFi Jammer

The hand-held signal blocker is our factory using advanced technology at home and abroad, which can effectively block wireless signals such as CDMA GSM DCS 2G 3G 4G 5G WIFI.


18 Channel Mobile Cell Phone WiFi VHF UHF Lojack Frequency Jammer

18 Bands 5g Jammer

This jammer is perfect for multiple channel signal jamming such as Mobile Cell Phone 2G 3G 4G 5G, WIFI2.4G, WIFI5.8G, WIFI5.2G, WIFI5.4G, GPS, LOJACK, VHF, UHF, etc.


Large Battery Handheld 8 Band Cell Phone GPS WIFI DCS PCS Jammer

3G 4G cell signal jammer

The latest Unique High Power handheld cell phone signal scrambler with 8 high gains antennas 28 watts, good jamming for mobile phone GSM CDMA DCS 2G, 3G, 4G 5G.


8-band GSM 3G 4G mobile phone signal jammer for sale online

portable wifi jammer

This is a portable wifi signal disruptor, which can cover 30 meters. Such portable signal interference includes CDMA GSM WIFI-2.4G 3G (UMTS) 4G GPS LoJack DCS PCS.


Box-type hidden antenna Adjustable Wifi cell phone jammer

hidden antenna high power Jammer

This is a self developed wall-mounted Phone WiFi signal jammer. It is made of the antenna, RF Amplifier Unit, Multiplexer,Main Control Board, Smart cooling system, Power Supply system.


Powerful WiFi jammer 3G/4G LTE/Wimax-GPS blocker with 12 antennas

12 antennas WiFi Jammer

This is a WiFi jammer with 12 antennas that can provide strong interference signals. Can cut off all 3G 4G WiFi5.8GHz GPS VHF UHF RF 315MHz 433MHz signal. interference is 40 meters.


12 Antennas Plus High Power Portable Mobile Phone Signal Blocker

12 Antennas Signal Jammer

This is currently the most powerful handheld jammer. The maximum interference range is 60 meters. Can block 12 signal bands. Use the DIP switch to select any signal frequency band.


Featured Multifunction Signal Disruptor Device

Portable Integrated Jammers GSM 3G LTE4G WiFi GPS Blocker

It can block all six frequencies continuously and simultaneously, or block only selected frequencies. Its interference range can reach 20m.

$408.69$669.39 Nylon shell

High power 16 band adjuestable phone frequency signal disruptor

This 16-wire jammer can not only cut off all 3G, 4G, 5G mobile phone signals, but also interrupt VHF UHF WiFi2.4G 5.8G CDMA450M GPS LOJACK signals.

$1166.99$1999.16 High cost performance

World First 20 antennas all-in-one 3.7G 5G mobile phone Signal jammer

As the world first all-in-one 5G cell phone jammer with 3.5G, 3.7G,5G WIFI and Remote control,which can also block GSM, 3G, 4G, VHF, UHF, Wi-Fi, GPS, L1, L2, L5, LOJACK, 5.2G,5.8G,3.5G,3.7G, RF signals.

$749.99$1369.89 20 antennas Jammer

Power adjustable jammer GSM GPS WIFI 3G 4G 5G signal jammer

It can destroy all cell phone signals, including the new 4G LTE 5G and WIFI frequency bands. Each individual frequency band can be adjusted individually.

$616.99$995.88 5G jammer

mini portable jammer Video:

portable 5G Jammer Video:

Electronic countermeasure equipment wireless signal jammer

Signal jamming equipment is an electronic countermeasure equipment used to generate and transmit jamming signals to disrupt and disrupt enemy radio communications.

According to the interference spectrum width, it is divided into targeting communication jamming equipment and blocking communication jamming equipment. According to the working band, it is divided into long-wave, medium-wave, short-wave, ultra-short-wave and microwave communication interference equipment. According to the mode of transportation, it is divided into ground (portable, placed, vehicle-mounted), airborne, shipborne and throwing communication jamming equipment. The radio communication equipment can also be used as a communication interference device by adding a communication interference adder.

A signal jammer is an electronic device that transmits or retransmits electronic jamming signals to disrupt or deceive enemy electronic devices, reducing their effectiveness or even failing.

Electronic equipment that emits electromagnetic waves to disrupt or disrupt the normal operation of enemy communications and radar equipment.

Jammers are divided into: clutter jammers that transmit pure clutter or clutter modulated signals to suppress enemy electronic equipment, blur the communication signal, or obstruct the radar target echo and lose the ability to detect signals to receive the enemy After the signal is properly processed and forwarded, false signals are used to deceive, confuse, and destroy the normal operation of the enemy's electronic equipment.

Jammers can be deployed on the ground, vehicles, ships, aircraft and missiles. According to the usage, it is divided into multiple use and one-time use (throwing) jammers. The working frequency band of the jammer has been extended from centimeter wave and millimeter wave to infrared and laser frequency band, and it is developing in the direction of increasing transmission power, creating effective jamming patterns, using computer adaptive control and phased array technology.

How do signal jammers interfere with cell phone signals?

In order to understand how jammers interfere with mobile phone signals, you must first know the working principle of mobile communication. Simply put, it is within a certain frequency range. The mobile phone and the base station are connected by radio waves at a certain baud rate and modulation method. Complete the transmission of data and sound.

When the mobile phone communicates, it contacts the base station through the uplink frequency, and then transfers the signal to the MSC (Mobile Service Switching Center) to realize the call. In the standby state, the mobile phone communicates with the base station through the BCH broadcast control channel. Once there is a need for a call, it first asks the MSC through the BCH for instructions. implement the call.

Let's take a look at what a signal jammer is. Jammers are also known as cell phone jammers, cell phone signal blockers, and secrecy devices. Their working principle is to implement co-frequency electromagnetic interference to the wireless network on which mobile phone communication depends, so that the mobile network cannot communicate normally, so as to achieve the purpose of interference. The cell phone jammer only blocks cell phone signals and will not affect other electronic devices.

It should be noted that in order to interfere with the mobile network by the jammer, it must be ensured that the signal field strength sent by the jammer is much larger than the field strength of the mobile signal BCH in the interference area. The closer the interference location is to the base station, the stronger the BCH field strength, which is effective. The interference area is also smaller.

How to buy a Satisfactory Frequency Blocker from us?

As a professional signal jammer supplier, we provide and sell a variety of jammer products such as cell phone jammer, GSM jammer, GPS jammer, WiFi / bluetooth blocker, 5G jammer, drone jammer etc. All the products here are high quality and are designed to be more convenient for people who need them. So, let's just take the cell phone jammers and GPS jammers as an example, although they are of different types, they also have something in common that is helpful to people. This means that both phone blockers and GPS jammers can help protect people's privacy.

Before you buy, however, you need to be clear about what features you want to signal to the jammer and which frequency bands you want to block so you can go straight to the right catalog and choose exactly the jammer you need.

The radio jammer uses frequency multiplication, frequency division, frequency hopping filtering and other technologies for the uplink and downlink channels of the mobile phone system to analyze the required shielding frequency; customize a spherical shielding space according to the power of the shield, and automatically form a shield within the specified range The magnetic field invalidates the mobile phone in this space. When the jammer is in the working state, it can make the 3G 4G 5G signal receiving and sending function in the specified range invalid, unable to dial out and dial in, so as to achieve the purpose of compulsory prohibition.

Radio jammers under the rapid development of the Internet

Nowadays, people pay more and more attention to privacy and security issues, especially mobile phone leak prevention. Mobile phones have become an indispensable communication tool in people's lives, and their privacy issues cannot be protected. In recent years, cases of loss of important and confidential information due to mobile signals are not uncommon. The places of signal shielding equipment are generally aimed at various examination rooms, schools, gas stations, churches, courts, libraries, conference rooms, hospitals, prisons, public security, etc. Where military powers ban cell phones.

The mobile phone jammer is used to quickly detect and evaluate whether the mobile terminal can still work normally under the interference of the jammer in the mobile communication, WIFI and other wireless communication facilities. Covers all frequency ranges of current mobile communications. Stored in the device are the uplink and downlink frequency bands corresponding to all the services of China Mobile, China Unicom, and China Telecom that are currently operating on 2G, 3G, and 4G. The device has five main functions, of which there are three detection and evaluation functions, including: wireless communication shielding detection, rapid detection, and wireless communication signal scanning.

In the information age with the rapid development of the Internet, people pay more and more attention to the demand for anti-eavesdropping devices in their daily lives. In an era when the drawbacks of eavesdropping incidents emerge, people increasingly feel that their privacy is shrinking. Nowadays, various eavesdropping devices of various sizes have appeared on the market. The eavesdroppers will hide the eavesdropping devices in secret-related areas such as offices and conference rooms to achieve the purpose of eavesdropping. Common bugs are tiny cell phone bugs, which use cell phone signals to obtain secrets in conference rooms and discussions. Dojammer recommends that everyone use cell phone signal jammers to ensure the safety of the conference room.

Latest Blog Articles

Precautions for production and debugging of multi-band signal jammers

Nowadays, all kinds of wireless signal shielding devices are emerging in an endless stream, but no matter what kind of tricks they are renovated, the multi-band signal shielding module in the core component is indispensable.

Posted on November 07, 2022

How much range can a suitcase-style signal jammer cover?

According to the customer's initial idea, the appearance of this suitcase must not be too large and the weight should not be too heavy. Therefore, the selection of suitcases is limited to a certain extent.

Posted on November 07, 2022

How to analyze the source of the missing signal of the mobile phone signal jammer?

If there are professional technicians from the mobile phone signal jammer manufacturer on site, they usually carry portable spectrum analyzers. With the help of the spectrum analyzer, the technicians of the manufacturer can initially judge the specific In which frequency band the missing signal occurs.

Posted on November 07, 2022

Why choose us?

We have been designing and manufacturing electronic equipment and devices. With the advancement of technology, many things have changed. But we always insist on serving customers in a timely and whole-hearted manner.

High quality-using the latest technology, sold to many countries, with a good reputation and perfect after-sales service, has won the best praise from customers in different countries. Doammer has always been adhering to the customer-centric approach, using the most advanced research technology to improve market demand, and providing customers with the highest quality shield series products.

Competitive price-We have been working hard to increase our productivity while ensuring high quality. The prices of our various products are the most competitive in the market.

The fastest logistics-if the product order is in our warehouse inventory, we will arrange the delivery as soon as we receive the payment. After we receive the payment, the factory's products will usually be shipped within 24 to 48 hours. All employees who supply products have more than ten years of experience, so your needs can be easily understood and supported.