|LongGang Dist. Shenzhen, Guangdong Prov. China (zip 518000)||email@example.com|
What is Phone Jammer?
A mobile phone jammer or blocker is a device which deliberately transmits signals on the same radio frequencies as mobile phones, disrupting the communication between the phone and the cell-phone base station, effectively disabling mobile phones within the range of the jammer, preventing them from receiving signals and from transmitting them. Jammers can be used in practically any location, but are found primarily in places where a phone call would be particularly disruptive because silence is expected, such as entertainment venues.
Why is Cell Phone Jammer in need?
Now anywhere you can find people using mobile phones. Unfortunately, restaurants, movie theaters, concerts, shopping malls and churches all suffer from the spread of cell phones because not all cell-phone users know when to stop talking. Who hasn't seethed through one side of a conversation about an incredibly personal situation as the talker shares intimate details with his friend as well as everyone else in the area?
Some people use electronic device to follow others Vehicles by tracking GPS signals for kidnapping; agents are using spy camera to video the officers meeting and secrets; competitors are using voice recorders to recording commercial meeting or privacy meetings; staffs always playing mobile when work by office WiFi ; there always be some guy disturbing you in concerts, theaters; terrorists like to attack shopping malls, hotels by IED bombs(Police and the military often use them to limit or disrupt communications during hostage situations, bomb threats or when military action is underway. Portable personal jammers are available to enable their owners to stop others in their immediate vicinity (up to 60-80 feet away) from using cell phones.)…these places will need the Phone Jammer.
How does Phone Jammer work?
Mobile works when it receive signals from Base stations.
A signal jammer transmits on the same radio frequency as the cell phone. It interrupts the communication between the cell phone and the base station found in the tower. The jamming is also known as a denial of service attack because it denies the service of the radio signal to users within the coverage area of the jamming device.
The principle behind interrupting the cell phone is similar to jamming other types of radio communication. In order to use a cell phone, a signal is sent from the phone to the cell tower. There are several cell towers in a city. As a cell phone user moves in an area, the signal is handled by one tower to another.
How many signals are there?
There are GPS signal, WiFi/Bluetooth signal, Video signal, Audio signal, 2G, 3G, 4G, 5G, 2.4G, 433MHz, 868MHz, GSM, CDMA, W-CDMA, LTE, bellowing some common signals:
|WI-FI, 5G||5500-5900 MHz|
|4G (Wimax)||2300-2410 MHz|
|4G (LTE)||725-785 MHz|
|RF Radio||315 MHz|
|RF Radio||433 MHz|
|Wireless Camera 1.2G||1100-1200 MHz|
|Wireless Camera 2.4G||2400-2483 MHz|
How many kinds of Phone Jammers are there?
It depends on the divide type, by applications there will be remote control mobile jammer, adjustable mobile jammer, school phone jammer, prison phone jammer, explosion proof mobile jammer, police and military mobile jammer, portable mobile; by frequencies there will be GSM jammer, 3G Jammer, 4G Jammer,5G Jammer, etc; by Signals there will GPS Jammer, WiFi Jammer, Bluetooth Jammer, UHF VH Jammer, by devices there will be Drone jammer, bomb jammer, cell phone jammer, vehicle jammer,
What’s the Applications of Mobile Jammer?
Any places related to personal privacy and security protection will need the phone jammer: home, school, hospital, gas station, church, prison, theater, conference room, military area, police station, airport, etc The biggest jammers used by police and the military can be mounted in vehicles for convoy security.
What should be concerned when using the jammer?
Most importantly, not to disturb others living or working. It’s mainly for Governmental or Military use, and actually many countries forbid to sell or use the Phone Jammer.
Because they disrupt the operations of legitimate mobile phone services, the use of such blocking devices is illegal in many jurisdictions, especially without a licence, When operational, such devices also block access to emergency services.
Secondly, make it clear where to use? There are different applications for various environments. School, Examination Center, Hall, Meeting Room, Factory, Prison, Church, Vehicle, Gas Station, Government agencies.
Then confirm Which signal to block or to disturb which device? Different application areas will need different phone jammers. Personal use will need simple, military or bomb jammers will be in need of high power to block all kinds of signals.
Working range also need to be considered cause signals of phone jammers will become weak for far places. And working surrounding environment will also affect the jammer. If you use the phone jammer near Base station maybe it can only block one or two meters area nearby, as base station is very powerful. So when you want to settle one phone jammer to work, inform the supplier where to use, how many meters you want to Jamming.
To jam a cell phone, all you need is a device that broadcasts on the correct frequencies. Although different cellular systems process signals differently, all cell-phone networks use radio signals that can be interrupted. GSM, used in digital cellular and PCS-based systems, operates in the 900-MHz and 1800-MHz bands in Europe and Asia and in the 1900-MHz (sometimes referred to as 1.9-GHz) band in the United States. Jammers can broadcast on any frequency and are effective against AMPS, CDMA, TDMA, GSM, PCS, DCS, iDEN and Nextel systems. Old-fashioned analog cell phones and today's digital devices are equally susceptible to jamming.
The actual range of the jammer depends on its power and the local environment, which may include hills or walls of a building that block the jamming signal. Low-powered jammers block calls in a range of about 30 feet (9 m). Higher-powered units create a cell-free zone as large as a football field. Units used by law enforcement can shut down service up to 1 mile (1.6 km) from the device.