Prison Jammer and Cellular Jammers: Related Technologies
What is a prison jammer in relationship to cellular jammers? A prison jammer is a device used to block cellular communications from a prison or secure facility, while cellular jammers are used outside of a prison for close proximity jamming applications. A Cellular Jammer is generally an omni directional jamming system and is meant to block masses of cellular subscribers from making or receiving calls. A Prison Jammer is a directional jamming system and is meant to single out unauthorized cellular usage.