Shure Active Directional Antenna with Gain Switch (902-960 MHz)

The Shure UA874XA is an antenna that is both active and directional, built for wireless microphone systems operating between 902 and 960 MHz. A log periodic dipole array focuses reception into a cardioid pattern, so signals coming from the stage or presentation area are captured while interference from the sides and rear is reduced. Inside the housing, a low-noise amplifier offers four gain settings that help you reclaim signal lost in long coaxial cable runs.

Engineers who manage audio in houses of worship, theaters, conference centers, or outdoor events will appreciate the extra stability this antenna provides. In permanent installations it can be mounted on a wall or ceiling, while on a mobile rig it threads onto a standard microphone stand for fast setup. The design maintains a rock-solid link even when performers move around or when the RF spectrum is crowded.

A 50 ohm BNC connector carries both RF and power, drawing 10 to 15 V DC bias from compatible Shure receivers or antenna distribution systems, so no external supply is required. With its compact form factor and included swivel adapter, the UA874XA drops into existing Shure setups without additional hardware.

Highlights:

• 902 to 960 MHz operating range
• Cardioid reception pattern created by a log periodic dipole array reduces off-axis interference
• Built in low-noise amplifier with four selectable gain settings
• Standard 50 ohm BNC connector for signal and power
• Mounts on a microphone stand, wall, or ceiling with the supplied swivel adapter
• Runs on 10 to 15 V DC bias from compatible Shure equipment