Shure UA844+SWB UHF Wideband Antenna Distribution System (470 to 960 MHz)

The Shure UA844+SWB is a UHF wideband antenna distribution system designed to expand and streamline Shure wireless microphone setups. It allows a single pair of antennas to be split across multiple receivers while actively amplifying the RF signal to compensate for insertion loss—ensuring consistent and reliable signal performance across your system.

A single UA844+SWB unit supports up to five wireless receivers, making it ideal for medium to large multi-channel installations. For larger deployments, up to five UA844+ systems can be linked in a two-tiered configuration, enabling scalable expansion while maintaining signal integrity.

The UA844+SWB is compatible with several Shure wireless receiver series, including:

• QLX-D

• ULX

• ULX-D

• SLX

• BLX4R

Engineered for professional touring, broadcast, corporate AV, and installed sound applications, the UA844+SWB provides efficient antenna distribution, RF amplification, and system scalability—helping maintain clean, stable wireless performance in complex RF environments.

Shure UA844 – Specification Sheet

Power

• Power Requirements: 14 to 18 VDC
• DC Output: 4x 14 to 18 VDC
• Output Current: 2.5 A Maximum (Combined Total from All DC Outputs)
• Operating Temperature Range: 0 to 145°F (-18 to 63°C)

RF Input Specifications

• Connector Type: BNC
• RF Frequency Range: 470 to 960 MHz
• Bias Voltage: 2x 15 VDC (150 mA Maximum)
• Impedance: 50 Ohms

RF Output Specifications

• Connector Type: BNC
• RF Frequency Range: 470 to 960 MHz
• Output Intercept Point: 21 dBm (Typical)
• Impedance: 50 Ohms
• Output Connector Isolation: 30 dB (Typical)
• Gain: -1 to +1 dB (Input to Any Output Port, Unused Ports Terminated in 50 Ohms)

Physical

• Dimensions: 1.8 x 19 x 6.8" / 45 x 483 x 172 mm
• Weight: 3.6 lb / 1.62 kg