welcome to HISEA
source:Industry News release time:2021-10-25 Article author:sznbone Popular:Prison Jamming system
As we know about jammers, we probably know that mobile phone signal jammers can interfere with mobile phone signals. They are used in the examination room to prevent candidates from cheating with mobile phones. It is not clear how signal jammers work and the types of signal jammers.
According to the appearance, signal jammers are divided into built-in antenna jammers and external antenna jammers. The outer antenna jammer is a metal shell, and the built-in antenna is a plastic shell. According to the use area and the area used, it can be divided into low power If the jammer and high-power jammer are used outdoors, the distance between the floors is relatively long. It is recommended to use a high-power signal jammer.
The working principle of the signal jammer is to scan 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. 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. No service system and other phenomena.
Generally speaking, the frequency emitted by the jammer interferes with the normal frequency of the mobile phone receiving the base station, making the mobile phone unable to connect with the base station, and thus unable to make calls, receive and send text messages, and surf the Internet normally. When the mobile phone signal jammer is turned on, although the mobile phone may have a full signal, there is no signal in actual use.
When the mobile phone signal jammer is turned on, it only has a shielding effect on the mobile phone, and has no effect on other electronic devices. This is because the electromagnetic signal emitted by the mobile phone signal jammer is completely within the collection working frequency band stipulated by the country, which will only block the communication of the mobile phone. And this signal is always in a relatively static state and will not affect any electronic equipment.
Cell phone signal jammers are not only used in school examination rooms, but also in confidential meeting rooms, prison detention centers, military units, etc. Especially prisons must be equipped with jammers. In order to prevent prisoners from contacting the outside world, mobile phones are not allowed. . If mobile phone signal jammers are used in prisons, it is recommended to use signal jammers of large and small power. When the shielding is busy, you can use low-power jammers, and high-power jammers can be used in large areas.
Read recommendations:
Portable anti UAV anti drone Systems 4 bands with removable battery for 1500m
Recording blocker protect your voice information security,air purifier type anti-recording equipment
Portable Full Band VIP Protection Digital Bomb Jammer
How to jamming 5G signals in the coming 5G era
What Is The Coverage Area Of The Signal Jammer?
Can blocking recording equipment effectively block mobile phone recordings?
Popular recommended products
Portable HS-V8J High-Power DDS Jammer
2020-09-144G/5G Signal Jammer (14 bands)
2020-11-10Waterproof Portable 360 Degree Anti UAV Drone Jammer
2020-09-24High Power Handheld Signal Jammer HS-P8J
2020-09-15Portable Handheld RF Signal Jammer, Car Lock Remote Control Blocker, 10W Jam Up To 100m
2022-01-13Related Information
What should I pay attention to when using signal jammers outdoors?Jammer factory
2021-10-18The role and use of GPS jammer
2020-12-07Introduction to Wi-Fi 6E
2023-09-19Can blocking recording equipment effectively block mobile phone recordings?
2021-08-14How to block recording equipment?
2021-03-25How to prevent the phone from being recorded?
2021-08-19How to detect the control effect of the wireless signal shielding device in the examination room?
2020-11-06What are the misunderstandings when using signal jammers?
2021-07-092.4GHz and 5.8GHz interference comparison of drones
2021-01-18What is a mobile phone network signal jammer?
2020-11-26How is the signal shielding in the examination room realized?
2021-11-15GSM jammer in IG (Prison) has been repaired
2021-07-13Anti-recording artifact-recording blocker
2020-12-11The decisive factor affecting the price of mobile phone signal jammer
2020-09-11Use mobile phone blocker to prevent texting while driving
2020-11-19Can blocking recording equipment effectively block mobile phone recordings?
2021-03-24Icasa slams use of 'signal jammer' in Sona
2021-10-25How to operate drone jammer?
2021-09-06The working principle of wireless signal jammer
2021-09-28How to prevent surveillance by GPS blocker
2021-09-15Interfering 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
