Shure UA845UWB – Ultra-Wideband 5-Way Active Antenna Distribution System

Product Overview

The Shure UA845UWB is a five-way active antenna distribution system covering VHF, UHF, 1.2, 1.5, and 1.8 GHz — a frequency range of 174 to 1805 MHz — making it compatible with the full current portfolio of Shure wireless systems including Axient Digital, UHF-R, ULX-D, QLX-D, SLX, and BLX4R. It allows up to four wireless receivers to share a single pair of antennas while amplifying the RF signal to compensate for insertion loss, and its CASCADE ports enable expansion to a fifth receiver or a second UA845UWB unit. The internal power supply and rack-mount form factor make it a standard infrastructure component in large commercial wireless deployments.

Product Description

Large commercial wireless systems — such as those found in houses of worship with 8–16 channels, broadcast studios, government conference facilities, or large auditoriums — require antenna distribution infrastructure that can consolidate RF signal paths while compensating for the signal loss introduced by passive splitting. The UA845UWB addresses this with active amplification across an ultra-wideband frequency range, eliminating the need for multiple frequency-specific distribution systems when a mix of Shure wireless product generations is in use. Each unit supports up to four receivers from one antenna pair; the two BNC CASCADE ports then allow connection to a fifth receiver or a second UA845UWB, enabling large multi-channel systems to run from a single, optimized antenna placement. For UHF-R (U4/UR4) systems, the power OUTPUT connectors can supply DC power to up to five daisy-chained receivers from a single source — note this does not apply to ULX or ULX-D. The UA845UWB is available with and without cable; this listing is the cable-included version.

Key Features

• Five-Way Active Antenna Distribution — Splits one pair of antennas to up to four wireless receivers while actively amplifying the RF signal to compensate for the insertion loss introduced by splitting.
• Ultra-Wideband Coverage (174–1805 MHz) — Covers VHF, UHF, 1.2, 1.5, and 1.8 GHz in a single unit, providing compatibility across Shure Axient Digital, UHF-R, ULX-D, QLX-D, SLX, and BLX4R wireless systems.
• CASCADE Ports for System Expansion — Two 50 Ω BNC-type CASCADE connectors allow connection to a fifth receiver or a second UA845UWB, enabling large commercial wireless systems to operate from a single optimized antenna pair.
• Power Distribution for UHF-R Receivers — Power OUTPUT connectors allow up to five U4 or UR4 receivers to be daisy-chained and powered from a single source, simplifying power infrastructure in large installations. (Does not apply to ULX or ULX-D receivers.)
• Internal Power Supply — Self-contained internal power supply eliminates the need for external wall adapters or separate power distribution, reducing rack clutter in commercial AV installations.
• Rack-Mount Form Factor — Designed for standard 19" rack installation, integrating cleanly into commercial AV equipment racks alongside receivers and signal processing equipment.
• Compatible with Current Shure Wireless Platforms — Verified compatibility with Axient Digital, UHF-R, ULX-D, QLX-D, SLX, and BLX4R wireless receivers operating within a compatible frequency range.

Typical Applications

• Boardroom
• Conference room
• House of worship
• Government space
• Broadcast studio
• Auditorium
• All-hands room
• Multi-purpose room

Technical Specifications

Frequently Asked Questions

How many wireless receivers can share a single antenna pair using the UA845UWB?
Each UA845UWB supports up to four wireless receivers from one antenna pair. Using the two CASCADE ports, a fifth receiver or a second UA845UWB can be connected, extending the system further.

Can two UA845UWB units be cascaded together for larger systems?
Yes. The two BNC CASCADE ports allow connection to an additional UA845UWB, enabling large commercial wireless systems with many channels to operate from a single optimized antenna placement.

Does the UA845UWB power ULX-D receivers through its power output connectors?
No. The power distribution OUTPUT connectors are designed for U4 and UR4 (UHF-R) series receivers only. ULX and ULX-D receivers receive power separately through their own power supplies.

What frequency systems is the UA845UWB compatible with?
The UA845UWB is compatible with Shure Axient Digital, UHF-R, ULX-D, QLX-D, SLX, and BLX4R wireless systems operating within a compatible frequency range. Its ultra-wideband design (174–1805 MHz) covers VHF through 1.8 GHz, making it suitable for multi-platform installations.

Is the UA845UWB suitable for permanent commercial installations?
Yes. Its rack-mount form factor, internal power supply, and broad system compatibility make it well-suited for permanent commercial AV installations in conference centers, houses of worship, government facilities, and broadcast environments.