Payment Terms | T/T, L/C |
Supply Ability | 500pcs per Month |
Delivery Time | 10 Working Days After Received Payment |
Packaging Details | Wooden Case with PE Foam |
Product Name | VSWR protection 300W Digital Jammer |
Advantage | with Manual adjustable output power |
Features | not affect the health of people |
Output Power | MAX 800W |
Special Design | with Remote Monitoring by Ethernet Network |
Jamming range | 100 - 600meters,depend on signal strength of mobile network |
Other Name | Prison Jammer in Brazil |
Operating Temp | -20℃ to +55℃ |
Brand Name | GREETWIN |
Model Number | GW-J800DNW |
Certification | SGS, ISO9001 |
Place of Origin | China |
View Detail Information
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Product Specification
Payment Terms | T/T, L/C | Supply Ability | 500pcs per Month |
Delivery Time | 10 Working Days After Received Payment | Packaging Details | Wooden Case with PE Foam |
Product Name | VSWR protection 300W Digital Jammer | Advantage | with Manual adjustable output power |
Features | not affect the health of people | Output Power | MAX 800W |
Special Design | with Remote Monitoring by Ethernet Network | Jamming range | 100 - 600meters,depend on signal strength of mobile network |
Other Name | Prison Jammer in Brazil | Operating Temp | -20℃ to +55℃ |
Brand Name | GREETWIN | Model Number | GW-J800DNW |
Certification | SGS, ISO9001 | Place of Origin | China |
High Light | cell phone signal scrambler ,cell phone blocker jammer |
Digital Cell Phone Signal Jamming Device , Cell Signal Scrambler VSWR Protection
How do inmates get their hands on cell phones? Apparently, visitors and corrupt prison guards have been known to furnish these phones to inmates. To help combat this phenomenon, several states have attempted to crack down by making the repercussions more serious. Courts have allowed punishments for those found with a cell phone on the basis that these conversations cannot be monitored and are thus a security threat . Several states have made it a crime for a prisoner to have a cell phone, and some are looking to raise that crime to the level of felony .
prison-jamming-system
Unfortunately for prisons, Prison Jamming system cell phone jamming (interfering with radio waves to block cell phone communication) is not a viable option — at least not in the U.S., where cell phone jamming devices are illegal as a result of property laws. In addition, even if prisons got permission to jam cell phone signals, the jammers could also interrupt the prison’s radio signals Despite these concerns, jails in other countries, such as England, have implemented jammers because of the prevalence of cell phones.
The Prison Jammer GW-J800DNW manages the problem of illegal cell phones in a Prison or Government facility. Prison Solutions from government stop smuggled phones from making calls by using RF Jammers.
Our solutions are good at operation and design. Prison Jammers work to block off large areas in a building to stop cell phone calls. These Prison Jammers are installed in a pre-determined pattern.
Using digital Gaussian white noise technology for Maximum performance. Will cut-off all Cellular Communication between Mobile Phones and Cellular cells.
The Jamming Radius depends on the strength of the signal in given area. All Cellular Mobile Devices will be totally BLOCKED, and will not be able to receive or dial outgoing calls. the cell phone display will show "NO SERVICE".
Signal Jammer Advantages:
1. VSWR protection,
When there be antenna disconnect, full system will not burn out.
2. Waterproof Level: IP63
Good cooling system, Continuous operation, even in hot climates.
3. Stable capability, cost-effective choice
4. Each channel can be controlled separately and simultaneously.
Manual adjustable output power with each channel.
allow the total blockade without interference of the people who live outside the perimeter of the prison.
5. Remote Monitoring(Optional)
Remote Monitoring available by Ethernet Network
Remote Control Interface: RJ45
Provide a system (software and hardware) that allows the authorities to supervise the operation at 100% of the blocking system.
6. Small influence to the electromagnetic environment.
Comply with the maximum power allowed for non-ionizing radiations that affect the health of people.
Signal Jammer Technical Specification.
Output interface | Description | Shield band of frequency | RF output power( +1dBm) | |
CH1 | GSM850 | 851-894 MHz | 46dBm | |
CH2 | AWS 1700 | 2110-2155 MHz | 46dBm | |
CH3 | GSM900 | 925-960 MHz | 46dBm | |
CH4 | PCS 1900 | 1930-1990 MHz | 46dBm | |
CH5 | WIFI, 2.4G | 2400-2485 MHz | 43dBm | |
CH6 | LTE 2300 | 2300 - 2400MHz | 46dBm | |
CH7 | CDMA450 | 460 - 470 MHz | 46dBm | |
CH8 | LTE700 | 758 - 803 MHz | 46dBm | |
Power supply: AC220V, or 110V | ||||
Total Output Power: 300Watt | ||||
Power consumption:1000Watt | ||||
Weight: 65Kg Size(length × wind × high):720×490×240mm | ||||
Humidity: 5%-95% Running Temperature: -20℃ to +55℃ | ||||
Cooling System | Systematic Smart Cooling System | |||
System Protection | VSWR, temperature | |||
Jamming Source | Digital Gaussian white noise technology | |||
Antenna Type | High Gain Directional Panel Antennas | |||
Number of Antennas | 3 | |||
Jamming range: 100-600m according to signal density of mobile network |
Digital noise technology jamming range is very high, 5 times stronger than VCO technology jammer.
There are 3 types RF Jammers.
1. VCO(voltage controlled oscillator) Technology
2. DDS (Direct Digital Synthesis)Technology
3. Pseudo random digital Gaussian white noise technology.
General Speaking,
1. VCO(voltage controlled oscillator) Technology
Requirements for the jamming range is not high, extremely sensitive civilian consumption levels of low cost, but efficiencies are not very strict scene.
2. DDS (Direct Digital Synthesis)Technology
Requirements for the jammer need wideband frequency range, and choose different frequency range, such as 20-3000MHz NO gap jamming.
3. Pseudo random digital Gaussian white noise technology.
Requirements for the jamming range is very high, can accept high cost, national security and military, have strict requirements for jamming range.
Signal Jammer Features:
Signal Jammer Application
Prisons, military, government, Oil and Gas Storage Facilities and fields, Churches, Theatres, News Conference Rooms, Libraries, Museums, Courts, Border Patrol and Drug Enforcement, Customs, mosques, etc.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company,Seller,Other
Year Established:
2005
Total Annual:
5million-10million
Employee Number:
100~200
Ecer Certification:
Active Member
Shenzhen Greetwin Technology Co., Limited is one of the leading suppliers which specializes in designing and manufacturing RF Jamming Equipment and Wireless Coverage Products. Wireless Coverage Products include 2G 3G 4G LTE 5G RF Repeater. The RF Repeater... Shenzhen Greetwin Technology Co., Limited is one of the leading suppliers which specializes in designing and manufacturing RF Jamming Equipment and Wireless Coverage Products. Wireless Coverage Products include 2G 3G 4G LTE 5G RF Repeater. The RF Repeater...
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