Shure UA874XA

Overview

The Shure UA874XA is an active directional antenna designed for wireless microphone systems operating within the 902 to 960 MHz frequency range. It uses a log periodic dipole array to focus reception into a cardioid pattern, which captures signals from the stage or presentation area while minimizing interference from the sides and rear. This antenna includes a low-noise amplifier with four gain settings, allowing you to compensate for signal loss over long coaxial cable runs and maintain a stable wireless connection even in crowded RF environments.

Its compact design and versatile mounting options make it suitable for both permanent installations in venues like houses of worship, theaters, and conference centers, as well as mobile setups. The antenna can be mounted on walls, ceilings, or standard microphone stands using the included swivel adapter, providing flexibility for various audio management needs.

Key features

• Directional cardioid reception pattern reduces off-axis interference, improving signal clarity from the desired source.
• Built-in low-noise amplifier with four selectable gain levels to optimize signal strength and reduce noise over long cable runs.
• Standard 50 ohm BNC connector carries both RF signal and power, simplifying setup by eliminating the need for an external power supply.
• Operates on 10 to 15 V DC bias supplied by compatible Shure receivers or antenna distribution systems for seamless integration.
• Flexible mounting options include microphone stand threading and wall or ceiling installation with the supplied swivel adapter.
• Compact form factor fits easily into existing Shure wireless microphone setups without requiring additional hardware.

Key specs

• Frequency range: 902 to 960 MHz
• Reception pattern: Cardioid, created by log periodic dipole array
• Amplifier gain settings: Four selectable levels
• Connector type: 50 ohm BNC for RF and power
• Power requirements: 10 to 15 V DC bias from compatible Shure equipment
• Mounting options: Microphone stand thread, wall mount, ceiling mount with swivel adapter

Connectivity and compatibility

The UA874XA antenna connects via a standard 50 ohm BNC connector that carries both the RF signal and power, which simplifies cabling and reduces clutter. It draws power directly from compatible Shure receivers or antenna distribution systems, so no external power supply is necessary. This makes it easy to integrate into existing Shure wireless microphone setups without additional adapters or modifications.

Its frequency range covers the 902 to 960 MHz band, making it suitable for wireless systems operating within this spectrum. The antenna’s directional pattern helps maintain a strong and clear signal in environments where multiple wireless devices may be competing for bandwidth.

Ideal uses and environments

This antenna is well suited for audio engineers managing wireless microphone systems in venues such as houses of worship, theaters, conference centers, and outdoor events. Its directional reception pattern and adjustable gain settings help maintain a reliable connection even when performers move around or when the RF spectrum is crowded. The flexible mounting options allow it to fit into both permanent installations and mobile rigs, making it a versatile choice for professional audio setups that demand stable wireless performance.

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