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Digital Cell Phone Signal Jamming Device , Cell Signal Scrambler VSWR Protection

  • China


  • SGS, ISO9001

  • GW-J800DNW

  • 1pcs

  • Negotiable

  • Wooden Case with PE Foam

  • 10 Working Days After Received Payment

  • T/T, L/C, Western Union, MoneyGram

  • 500pcs per Month

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 .



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.

Digital Gaussian white noise is essentially a pseudo random signal, signal characteristics consistent with a random function. Strong Anti-interference ability, there is no need high power interference radiation power, influence and damage to the electromagnetic environment is very small, can bear long distance loss. Long-term cases, interference stability. Mechanism causes due to interference, interference by external environment (such as wind, rain, ice, variations on space) change is not obvious.

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:

  1. High-power multi-band jammer, make high jamming range
  2. Modular construction for easy maintenance, repair and upgrade.
  3. Max 300watts total RF output power.
  4. Special additional housing for all weather protection.
  5. The general design of the system meets military requirements.
  6. Different frequency band can be controlled independently by single switches;
  7. Power Amplifiers protection design ensures the working reliability of the device.
  8. (Optional)Can customize these frequencies AM, FM, VHF, UHF, 450MHz, iDEN, CDMA, GSM, GPRS, DCS, PCS, AWS, WCDMA, LTE 700, LTE 800, LTE 2300, LTE 2600, GPS, WIFI, WIMAX, etc.

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.


Digital Cell Phone Signal Jamming Device , Cell Signal Scrambler VSWR Protection 0

Add:  Baodeli industrial park, Longhua District, Shenzhen City, Guangdong Province, China   Tel: +86-15112267605
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