Control wireless coverage instead of reacting to dropouts. The Shure UA874US active UHF directional antenna is designed for installations that need focused reception across 470-698 MHz, with gain settings that let integrators tune the RF path to the room, the cable run, and the receiver location. Directional patterning helps concentrate energy where the system needs it and reduce pickup from unwanted directions. That matters in dense RF environments, on stages with moving talent, and in distributed systems where antenna placement is constrained by architecture or distance. The switchable -6 dB, 0 dB, +6 dB, and +12 dB settings give technicians practical control when balancing signal strength against overload risk. For enterprise AV and wireless microphone deployments, this antenna is the kind of component that protects the rest of the system. It helps preserve link quality, supports cleaner spectrum use, and reduces the need for trial-and-error tuning during setup. When reliability is part of the deliverable, antenna selection is not a detail — it is part of the system design.