welcome to HISEA
source:Industry News release time:2021-07-20 Article author:sznbone Popular:Prison Jamming system
An attacker can use a jammer to interrupt the radio connection. Suppressing or preventing radio transmission may, for example, interrupt the image of the surveillance camera. These attacks must be considered protection.
The signal jammer sends a signal of the same frequency (noise or pulse) with a certain strength on a certain frequency, thereby superimposing the original transmission. If jammers are used exclusively, they are called strategic jammers. These devices are also called jammers, and the process is called noise interference.
The jammer can be used in various radio protocols, such as Bluetooth, WiFi, GSM, UMTS, LTE and GPS. Therefore, the specific frequency of the radio protocol is interfered. There are very simple and small devices that can only interfere with radio signals within a limited radius. For example, there is a small adapter for car cigarette lighters that has the function of interfering with GPS signals. A portable device with a battery can reach a maximum distance of 20 meters under optimal conditions, depending on the model. Usually, they interfere with the signal in the room. Powerful fixed equipment can reach a range of 80 meters.
In Germany, the use of jammers is illegal. They are mainly used by investigative agencies and military departments. Some of them are used in prisons to prevent prisoners from making illegal communications. The challenge here is that no outside signals are blocked, such as mobile phone signals for emergency calls. In foreign countries, jammers are sometimes used in movie theaters and theaters so that the incident will not be interrupted by mobile phone signals. Another use is, for example, to block control signals from drones.
If an attacker uses this interference transmitter, it can be used to block the radio link of the surveillance camera or the window sensor of the alarm system. Therefore, a broken connection must always be equivalent to an alarm. In addition, interference can be detected by continuously testing the radio connection between two components using a cable connection. If the connection is interrupted, the jammer is active. Alternatively, but also technically more difficult to solve, you can test the signal level, the strength of the radio signal. If a new strong radiation source is detected here, it may be an interfering transmitter.
Read recommendations:
Waterproof High Power Anti UAV Drone Jammer
HS-S12HJ Handheld 12 Bands 5G Cellphone Signal Jammer with Nylon Cover and Screen Display
Popular recommended products
Portable HS-V8J High-Power DDS Jammer
2020-09-14High Power Handheld Signal Jammer HS-P8J
2020-09-154G/5G Signal Jammer (14 bands)
2020-11-10Waterproof Portable 360 Degree Anti UAV Drone Jammer
2020-09-24Portable Handheld RF Signal Jammer, Car Lock Remote Control Blocker, 10W Jam Up To 100m
2022-01-13Related Information
Examination signal jammers escort the order of major examination rooms
2020-12-11Worried about drone invasion? The HiSea Jammer provides Anti-drone solutions.
2022-09-09Customized solutions to solve these problems for you
2020-12-12How jammers can fight criminals?
2021-09-23What kind of anti-recording equipment should be used in confidential meeting rooms
2020-12-07What can a GPS jammer do?
2021-08-16The practicality of mobile phone jammer
2020-11-10Jammers have been used in war
2021-09-27Signal jammers are widely used in school examination rooms!Jammer price
2021-10-18Detention center mobile phone signal jammer solution
2020-11-05Pakistan to launch 5G mobile services in August 2024
2023-12-16How to solve the big threat of GPS tracking？
2021-09-10Jammers can reduce myopia
2021-09-24How to prevent the phone from being recorded?
2021-08-21What equipment is needed for anti-recording in the conference room?
2020-12-14Ericsson says operators need to highlight where 5G gives users higher capacity
2023-10-05The influence of magnetic field strength on test signal shield
2020-11-27These places must be equipped with signal jammers!
2021-08-105G jammers will soon replace 4G signal blockers
2021-05-12How to choose a good 4G signal jammer
2020-11-11Interfering products
SSA3000X Plus Series Desktop Style Spectrum Analyzers
2025-04-09HSA-Q1 Handheld RF Spectrum Analyser up to 13.44 GHz
2025-04-09Protek A734 100kHz-4.4GHz Handheld Spectrum Analyser
2025-04-09Low-altitude defense drone portable equipment
2023-11-20Mobile Phone Cellular Signal Booster GSM PCS Network Repeater for Garage Basement Signal Repeat
2023-11-092W Mobile Phone Signal Repeater 1800 2100 2600 MHz Tri-Band 33dBm Network Booster
2023-11-093G Signal Repeater Mobile Phone Signal Booster
2023-11-09Portable Signal Jammer Full Band 21 Channels 2g 3G 4G 5g Mobile Phone Network Lojack Walky Talky Signal Jammer
2023-11-01Professional all-round 360-degree recording jammer air purifier type anti-recording equipment
2023-11-01Anti Spy Remote Control Portable Audio Voice Recording Jammer up to 2m white noise to Privacy Protection
2023-11-01Recording blocker protect your voice information security,air purifier type anti-recording equipment
2023-10-312000m Detection Handheld Drone (UAS) Detection Warning Instrument Detector Dji, Autel and Fpv Drones
2023-10-27Handheld Drone/Uavs Detecter for Detecting Dji/Autel/ Fpv Drones up to 2km
2023-10-25with 2km Drone Controlled Signals WiFi Drone Signal Jammer GSM 900MHz WiFi 2.4GHz 5.8GHz Anti Drone System
2023-10-25Unique Handheld 28 Bands 27 Antennas Wi-Fi6e FM Radio GSM 3G 4G 5g Mobile Phone Jammer
2023-10-23Handheld 24 Antennas 5g Cellphone Signal Jammer with Nylon Cover
2023-10-23Convoy 12 bands RCIED Bomb Jammer
2023-10-23Vehicle Mounted Drone Detection Jamming Integrated Uav Detection, Positioning, and Countermeasures Blocking Units
2023-10-17Portable Drone Detector aeroscope mobile works offline or online can find controller pilot position detection device up to 10km
2023-10-05Vehicle Use-Signal jammer detector for uniform services
2023-09-20Anti-Theft Jammer Detector for Local Command Center
2023-09-20Portable Cellphone Jamming Detector
2023-09-19M8000 RF Signal Detector Anti Spy Tracker Wifi Camera GSM Audio Bug Sweeper
2023-09-188km Ku Band Microwave Alarm Security System Ground Surveillance Monitor/Detector/Sensor/Radar
2023-07-31Full Band Drone Jamming and Navigation Spoofing
2023-07-318kms 300MHz~6GHz RF Uav All Frequency Detection Direction Finding Equipment
2023-07-311.2G 100W anti drone module
2023-07-211.2G 50W anti drone module
2023-07-211.2G 30W anti drone module
2023-07-211.2G 10W/20W anti drone module
2023-07-21Start a conversation to know more about what we have for you…
Get in touchEnter your email for exclusive offers and information on new upcoming products.
product
solution
about us
service
news
