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Brand Name : GREETWIN
Model Number : GW-J800DNW
Certification : SGS, ISO9001
Place of Origin : China
MOQ : 1pcs
Price : Negotiable
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 : Eight Band 300W Digital Jammer
Advantage : Level IP63 Design
Features : with Remote Monitoring by Ethernet Network
Special Design : Small influence to the electromagnetic environment.
Application : Prison, Jail
Jamming range : 50 - 600meters,depend on signal strength of mobile network
Other Name : 300W Prison Jammer in South America
Operating Temp : -20℃ to +55℃
IP63 Digital Device To Block Mobile Phone Signal Isolator Remote Monitoring
Especially for prisons and other large sensitive locations such as military or governmental compounds.
It can also use in Oil and Gas Storage Facilities and fields, Security Services, Military Units, Secret Services, Museums, Facotry, Border Patrol and Drug Enforcement, Customs, etc. – Remote PC control with software to Turn on each jammer, each band or the whole jammer system ON/OFF, VSWR Alarm in a wireless setup (RF module). Each unit offers a key lock support & mounting hardware.
Digital noise technology jamming range is very high, 5 times stronger than VCO technology jammer.
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".
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 | ||||
Mobile Phone Signal 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.
Mobile Phone Signal Features:
Mobile Phone Signal 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.
  
Mobile Phone Signal 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.

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