Every technology has a good and a bad aspect, the important thing is how we use it. Like jammers, most of the situation is being used in the right place. But it is undeniable that some people use it to do bad things. Of course, today we are not talking about how the jammers are used correctly, but about a detailed analysis of the jammer itself. Only by knowing this device better will we be able to understand how to use it best.
Jammer dominate the cell phone by transmitting a signal on the same frequency and at a power high enough that the two signals collide and cancel each other out. Cell phones are designed to add power if they experience low level interference, so the jammer should recognize and match the phone's power increase.
To jam a cell phone, you need a device that broadcasts on the correct frequencies. Although different cellular systems treat signals differently, all cell phone networks use radio signals that can be interrupted. GSM, used in digital and PCS-based cellular systems, operates in the 900 MHz and 1800 MHz bands in Europe and Asia and in the 1900 MHz 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. This is why jamming devices are expensive.
Jammers Applications and Benefits
Cell phone jammer devices were originally developed for law enforcement and military use to cut off the communications of criminals and terrorists.
The bombs that detonated suburban trains in Spain in March 2004, as well as explosions in Bali in October 2002 and Jakarta in August 2003, all relied on cell phones to set off explosives. It was widely reported that a cell phone jammer thwarted an assassination attempt on Pakistani President Musharraf in December 2003.
When President Bush visited London in November 2004, it was reported that British police were considering using jammers to protect the President's motorcade through London.
During a hostage situation, the police can control when and where an abductor can make a phone call. Police can block phone calls during a drug raid so that suspects cannot communicate outside the area.
GSM jammers can be used in areas where radio transmissions are dangerous (areas with a potentially explosive atmosphere), such as chemical storage facilities or grain elevators.
Companies use jammers to stop corporate espionage by blocking voice and photo transmissions from camera phones. There are rumors that hotel chains are installing jammers to block guests' cell phone use and force them to use in-room phones at high rates.
With the advent of the 5g era, 5g jammers will also be widely used in various fields
Ordinary people buy Drone Jammer, which are very popular now, so some areas are controlled, and drones are not allowed to shoot, so many areas will build drone jammers by themselves, and drones cannot not cross this area.