Phone signal jammers mainly for various types of exam, schools, gas stations, churches, courts, library, conference center (room), theaters, hospitals, government, finance, prisons, police, military areas, such as prohibiting the use of cell phones in places. http://www.4gcellphonejammers.com/
4g cell phone jammer It is understood that the mobile phone signal jammers now on the market can limit 500M meters away from the launch pad, and the radius> 20 m cell phone signal. Shielding radius adjustable, it only shield mobile phone signals, without an impact on other electronic devices. Save energy, power of 20W - 480w.
Work when the phone is in a certain frequency range, mobile phones and base stations to link up via radio waves, to a certain baud rate and modulation scheme to complete the transfer of data and voice. In response to this communication principle, 4g cell phone signal jammers in the course of their work to a certain speed past the low-end to high-frequency channel scan. The scanning speed can interfere with the formation of garbled messages in the phone signal is received, the phone can not detect the normal data transmitted from the base station, the phone can not establish a connection with the base station. Mobile search network performance, no signal, no service systems and so on.
Common market cell phone signal jammers, and its role frequency: 869 ~ 894MHz; 825 ~ 960MHz; 1805 ~ 1880MHz and 1900 ~ 1990MHz and so on. Role band for CDMA800, GSM900, DCS1800, PCS1900. Can control the diameter range of 40 meters or so, the use of DC-DC converter input voltage, 5V output voltage. 4g cell phone jammer
Basic functions:
1 slow start function
Jammer after power, the power supply in four seconds from zero to stabilize.
2 shielding function
After starting completed within 35 seconds within the scope of the phone is blocked.
The basic properties:
Transmitting frequency range: 860-960MHZ 1.800-1.990GHZ
Transmit Power: 1W ± 200mA
Ambient temperature: -20- + 55 ℃
Relative humidity: 30-95%
Role band: CDMA800, GSM900, DCS1800, PCS1900, PHS.
Control range: 40 meters or so.
1. Select an area cut off cell phone signals, the cut is placed on the desktop or wall in this area.
2. After the installation is complete, turn off power, turn on the power switch.
3. After the device is connected, press the power switch off device to work. At this site the phone is searching all open network status, loss of base station signals. Lord called were unable to establish contact calls.
Portable cell phone signal jammers
A portable cell phone signal jammers, portable cell phone signal jammers are imported IC, independent research and development, especially for some of the special needs of domestic and international security and confidentiality of the small field sites, such as confidential office, negotiation room, the flow of vehicles, mobile political and business.
VIP escort site, etc., according to the actual situation of domestic and foreign mobile communications well-developed high-tech products, it can in a radius of 0.5 to 15 meters (usually about 5-80 meters) within a block GSM / CDMA / DCS / PHS / PCS / 3G mobile phone signal (enhancement of GPS signals can be masked), so the phone can not play in the region and the answer, and will not interfere with other electronic devices work within the environment. When the phone away from the shield range, you can resume normal use.
The machine is easy to carry concealed lines, small size, light weight, weighing only 150 grams; simple operation, low power consumption, only 0.5W / h, the boot time up to 2-3 hours; convenient charging, most Nokia chargers are be universal; truly environment-friendly handheld jammers.
5-channel 3G mobile phone signal jammers
The fifth-generation 8-channel 3G mobile phone signal jammers
For the continuous development of communication standard, according to the actual situation of the mobile communications abroad well-developed third-generation 3G mobile phone signal jammers. The jammers and ordinary phone signal jammers differs in that it not only for ordinary cell phone signal shielding, but also must be three bands three domestic mobile operators were completely covered. Chinese domestic three mobile operators China Mobile, China Unicom, China Telecom's 3G bands used are as follows: China Mobile 3G band (2010-2025MHz), China Telecom 3G band (2110-2125MHz), China Unicom 3G band (2130- 2145MHz).
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< ��@- style="margin-bottom:0pt; margin-top:0pt; line-height:16.5000pt; background:rgb(255,255,255); " >Transmit Power: 1W ± 200mA
Ambient temperature: -20- + 55 ℃
Relative humidity: 30-95%
Role band: CDMA800, GSM900, DCS1800, PCS1900, PHS.
Control range: 40 meters or so.
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