Mobile communications is being increasingly used for communicating with friends and family members. With the costs of mobile sets going south, more and more people are subscribing to the mobile services. But with expanding base of mobile users, many problems have come to fore. One among them is the constant disturbance that is created by the continuous buzzing of the mobiles. The problem is more irritating when one is sitting in a cinema hall, or with a group of people. One effective way to tackle this problem is to use jammers. The jammers block the mobile reception by creating black out region within a radius of its operation. Different types of jammers are available in the markets. This includes 3G Jammers, GPS Jammers, Phone blockers, Bluetooth jammers, Cell phones jammers, and others. These jammers use the latest technologies that have been designed to block mobile signals.

The Cell phones jammers can be used in seminar halls and class rooms or at board rooms and small meeting rooms when one requires no disturbance at all. These jammers are portable enough to fit easily in one’s pocket and offer a disturbance free ambience. The jammers can be used over a radius of 2 to 40 meters in which they create a complete signal blackout. They work on a portable rechargeable battery that makes them easy to recharge. The jammer adapters can be used with car chargers that get power from a 12 V battery. They have been designed to block different types of signals that include UMTS, W-CDMA, IDEN, PCS, PHS, TDMA, PDC, CDMA, DCS, GSM, and GPRS. 3G Jammers are also available in the market. Since different mobile technologies operate over different frequency ranges, the jammers have been designed to cover a wide range of frequencies. This includes 2110-2170 Mhz, 1805-1990Mhz, 925-960Mhz, and 850-894Mhz. When one buys a jammer kit one can find a car adaptor, an AC wall plug, along with the jammer.

Apart from jammers that operate over a short radius, there are heavy duty Phone blockers that can cover a wide range. The heavy duty adapters generally find applications at Courts, Prisons, Libraries, News Conference Rooms, Conference Rooms, Churches, Theatres, Hospitals, Oil and Gas Fields, and Gas Stations. At most of these places, it is critical to stop mobile interference as it may create a security hazard for example gas stations and military units. Being designed to operate 24/7, the jammers can operate within a 50 m radius thus effectively blacking out any signal interference within that range.

They can black out almost all the frequency ranges from 2110 – 2170 MHz to 850 – 894 MHz. They are comparatively heavy as compared to the portable jammers with weight around 3 kgs. Most of them come along with a remote control set. The jammer sets are available at many leading retails shops. One can also purchase them from the online stores that feature a wide range of the jammer equipments. They also highlight the different features of the sets including details such as operating range, operating frequencies, and the accessories that one gets along with the equipments.