Cellular networks and wireless networks are one of the basic communication and information exchange channels these days. Due to their universality and availability, they began to be used for wiretapping, surveillance and in industrial espionage. RF jamming devices are to protect against information and data leakage through cellular and wireless networks. This type of equipment is also used to block unauthorized locating and tracking devices installed in vehicles. Jamming devices are used by the military and government agencies for protection of their data and personnel.