PowerPoint Presentation

[Audio] Hello, we are going to see about mobile phone jammer..

[Audio] WHAT IS JAMMER ? • Jammer are the device by which we can creat a temporary " dead zone"in there immediate proxcimity. • There are three type of jammer . • Radar jammer • Radio jammer • Cell phone jammer..

[Audio] JAMMING BASICS • A jamming device transmits on the same radio frequencies as the cell phone, disrupting the communication between the phone and the cell-phone base station in the tower. It's a called a denial-of-service attack. The jammer denies service of the radio spectrum to the cell-phone users within range of the jamming device..

[Audio] HOW THE JAMMER WORK .• Jammers block cell phone use by sending out radio waves along the same frequencies that cellular phones use at a high enough power that the two signals collide and cancel each other out. • This causes interference with the communication of cell phones and the towers to render.the phones unusable. On most phones, the network would appear out of range. • So Jammers work by either disrupting phone to tower frequencies or tower to phone frequencies..

[Audio] INSIDE A JAMMER • ANTENNA : • Every jamming device has an antenna to send the signal. Some are contained within an electrical cabinet. On stronger devices, antennas are external to provide longer range and may be tuned for individual frequencies..

[Audio] WHY ARE JAMMERS USED? • A phone jammer provides the ultimate solution in any area where cellular communications frequently cause nuisance either by loud incoming call rings or resulting loud telephone conversations. • Cell phone jamming devices were originally developed for law enforcement and the military to interrupt communications by criminals and terrorists..

[Audio] Examples include: security, zones, public, transport, classrooms, temples, tv & radio stations, jails, govt, buildings, military bases, industries etc..

[Audio] ADVANTAGES • They can in theory interfere with emergency communications between police and rescue personnel • It also represents a safety hazard because jamming blocks all calls in the area, not just the annoying ones..

[Audio] DISADVANTAGES • Jammers can be used by criminals who break into houses. • There are concerns that crudely designed jammers may disrupt the functioning of medical devices such as pacemakers ..

[Audio] CONCLUSION • Every technology has good aspect as well as bad aspect the important thing is ,how we are using it. • Maybe someday governments will relax their restrictions on jammers and they will become standard in places like churches, movie theaters and courthouses. Until then, only government personnel. and outlaw jammers will be able to enjoy some peace and quiet at the movie theater or the ride via public transportation to work..