1) The document describes a tactical cellular jamming system that can jam up to 6 cellular bands and has a maximum output power of 100W per band. 2) The system uses a digital receiver to scan cellular bands, identify control channels, and send that information to the jammer. The jammer can then block specific channels within each band. 3) The jammer supports uplink and downlink jamming simultaneously across multiple cellular standards and frequencies between 425-2170MHz. It can be controlled via an RS232 cable connected to a PC.