welcome to HISEA
call us: +86-17359596335
source:Industry News release time:2021-04-09 Article author:sznbone Popular:Prison Jamming system
The working principle of the machine signal jammer (as known as mobile phone signal screen blocker, mobile phone signal jammer, standardized test room signal jammer, wireless signal jammer) is as called the scanning signal generated by the sawtooth wave signal generator is inverted by the inverter Then, it enters the voltage-controlled oscillator to modulate the three frequency bands with the same downlink frequency of CDMA, GSM, and PHS. The modulated sweep signal is amplified by the power amplifier, and the power of the power amplifier is controlled by the voltage regulator tube. The amplified sweep signal is The form of radio waves is launched into the air. Because the frequency sweeping signal forms garbled interference in the message signal received by the mobile phone, the mobile phone cannot receive the normal data sent by the base station, so that the mobile phone cannot establish a normal connection with the base station, and the mobile phone is separated from the communication network of the base station. The mobile phone displays the phenomenon of no signal and no service system in the search network, and achieves the blocking effect. It does not rely on unlimited increase of power to compete with the mobile phone base station to achieve the blocking effect.
The electromagnetic signal intensity which is emitted by the mobile phone signal jammer ,lt is very weak. As long as the qualified products produced by the regular manufacturers, the electromagnetic radiation intensity of the Dartdi mobile phone signal jammer has passed the national authoritative testing and certification organization, such as (The Electronic Security Alarm System Testing Center of the Ministry of Public Security) , Strictly tested by the Environmental and Health Related Product Safety Institute of the Chinese Center for Disease Control and Prevention, the measured values of electromagnetic field intensity at all sampling points are lower than the relevant frequency band standard of the "Electromagnetic Radiation Protection Regulations" (GB8702-88) formulated by the State Environmental Protection Administration The limit value (this standard is only 1/5 of the European standard and 1/10 of the Japanese standard) will not cause harm to the human body, so there is no need to panic. The unnecessary psychological burden is the real obstacle.
The power of the mobile phone signal jammer is very small (≤1W), and the range is about 20 to 30 meters. It will not cause interference to the mobile phone base station at all. Moreover, when used in specific occasions, there is no question of harming public information security. The frequency of the electromagnetic signal sent by it falls completely within the working frequency band of the mobile phone specified by the country, and this signal is always in a relatively static and constant state, and will not affect any other electronic equipment.
Read recommendations:
Portable Large-Range Radio High-Power Drone Jammer
10 Bands Portable Wi-Fi Bluetooth 3G 4G 5g GSM 500W High Power Signal Jammer
Hotsale 4 Band Handheld WiFi and 3G Cell Phone Jammer
EU To Allow 5G Connectivity On Flights
China to expand 5G application scenarios, boost R&D on 6G
Uttar Pradesh Board 10th, 12th Exams 2022: CCTV Cameras Installed At Centres To Curb Cheating
Popular recommended products
High Power Handheld Signal Jammer HS-P8J
2020-09-154G/5G Signal Jammer (14 bands)
2020-11-10Portable Handheld RF Signal Jammer, Car Lock Remote Control Blocker, 10W Jam Up To 100m
2022-01-13Waterproof Portable 360 Degree Anti UAV Drone Jammer
2020-09-24Portable HS-V8J High-Power DDS Jammer
2020-09-14Related Information
Jammers have a great impact on public safety
2021-09-29The importance of installing mobile phone signal jammers in prisons
2021-06-01Anti-Drone Technology: Essential for Future Warfare
2022-06-23Army and prisons use cell phone jammer
2021-06-23Get a handheld optional 4G GPS signal jammer for a comfortable life
2020-11-16Mobile phone shielding device avoids the disadvantages of using mobile phone.
2020-11-19An excellent cell phone signal jammer you can't miss
2020-11-11Need to use mobile phone signal jammer in class
2020-11-10Why not to try the High Power Cell Phone WIFI Signal Jammer?
2021-05-05Which occasions cannot without the mobile phone signal jammer
2021-05-26Can't prevent recording? Record jammer to prevent recording?
2020-12-152.4GHz and 5.8GHz interference comparison of drones
2021-01-18What should I pay attention to when using signal jammers outdoors?Jammer factory
2021-10-18Embracing the 5G Era: How Businesses Can Benefit from Next-Generation Wireless Technology
2023-07-31Selection guide for recording blocker!
2020-12-15Advantages of drone jammers
2021-01-23How to block the signal to prevent recording?
2021-08-21Basic requirements of prison signal jammer
2021-06-23Factory mobile phone shielding project solution!Jammers manufacturer
2021-09-25"How to Build a Digital China Faster and Better"
2022-08-24Interfering products
V500 Rack-mounted Spectrum Analyzer
2026-03-16SSA3000X 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 module
2023-07-211.2G 50W Jammer Module
2023-07-211.2G 30W 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
