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Shure UA844SWB Antenna Distribution System

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Description

The UA844+SWB UHF Wideband Antenna Distribution System from Shure is for the expansion of a Shure wireless microphone system. It can be used to split one pair of antennas to multiple receivers and amplify the RF signal to compensate for the insertion loss. Read more

Features

  • Five-way active antenna splitter: Splits one antenna pair to five receivers.
  • RF signal amplification: Compensates for signal loss from splitting.
  • Power distribution: Supplies DC power to four connected receivers.
  • Wideband frequency range: Operates across 470-960 MHz.
  • Expandable cascade ports: Connects up to five units in a two-tiered configuration.
  • Front-mounting antenna option: Allows antennas to be mounted on the front panel.

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The UA844+SWB UHF Wideband Antenna Distribution System from Shure is for the expansion of a Shure wireless microphone system. It can be used to split one pair of antennas to multiple receivers and amplify the RF signal to compensate for the insertion loss. Read more

Features

  • Five-way active antenna splitter: Splits one antenna pair to five receivers.
  • RF signal amplification: Compensates for signal loss from splitting.
  • Power distribution: Supplies DC power to four connected receivers.
  • Wideband frequency range: Operates across 470-960 MHz.
  • Expandable cascade ports: Connects up to five units in a two-tiered configuration.
  • Front-mounting antenna option: Allows antennas to be mounted on the front panel.

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About the Shure UA844SWB Antenna Distribution System

The Shure UA844SWB is an active antenna distribution system designed to support large-scale wireless microphone and in-ear monitor setups by efficiently distributing amplified RF signals from one or two master antennas to up to four wireless receivers. Its wideband design covers a broad UHF spectrum, making it versatile for use with various frequency bands without retuning. The system's primary function is to eliminate the signal loss that occurs when multiple receivers are connected to a single antenna via passive splitters, ensuring each receiver gets a strong, clean, and isolated RF signal. This is critical for maintaining system reliability and maximizing range in professional touring, broadcast, and installed sound applications.

The unit features two independent, ultra-low-noise amplifier channels (for true diversity setups), each with its own gain control and LED level metering. This allows technicians to optimize the incoming signal from remote antennas and prevent over-amplification. The rear panel provides antenna inputs and four sets of BNC output pairs, with DC pass-through on each output to remotely power compatible active antennas, such as the Shure PA805, simplifying system cabling. The robust metal chassis is built for rack mounting and designed to withstand the physical demands of road use.

For RF coordinators, the UA844SWB is a key component in building scalable and interference-resistant wireless networks. It reduces the number of remote antennas needed, minimizes cable runs, and ensures every receiver in a rack receives an optimal signal for true diversity operation. This results in greater overall system stability, improved audio clarity, and the ability to support more wireless channels reliably in complex RF environments.

Key Features

  • Five-way active antenna splitter: Splits one antenna pair to five receivers.
  • RF signal amplification: Compensates for signal loss from splitting.
  • Power distribution: Supplies DC power to four connected receivers.
  • Wideband frequency range: Operates across 470-960 MHz.
  • Expandable cascade ports: Connects up to five units in a two-tiered configuration.
  • Front-mounting antenna option: Allows antennas to be mounted on the front panel.

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Shure UA844SWB Antenna Distribution System Specs

System Configuration
Amplifier Channels
2 (Independent)
Outputs per Channel
4 (8 Total BNC Ports)
Distribution Type
Active, Wideband
Electrical Specifications
Frequency Range
470 - 952 MHz
Gain per Channel
Adjustable, Up to 20 dB
Noise Figure
<2.5 dB
Maximum Output Level
+10 dBm per Port
Power & Connectivity
Antenna Input Connector
N-type Female
Output Connectors
BNC Female
DC Power Pass-through
Yes, per Output Pair
AC Power Input
100-240V, 50/60 Hz (Internal)
Physical & Control
Form Factor
1 Rack Unit (1U)
Front Panel Controls
Gain Knobs, Power Switches
Indicators
LED Signal Level Meters
Dimensions
1.72" H x 8.43" W x 6.75" D
Performance Data
Isolation Between Outputs
>30 dB
Intermodulation Rejection
>70 dB

Key Features

  • Five-way active antenna splitter: Splits one antenna pair to five receivers.
  • RF signal amplification: Compensates for signal loss from splitting.
  • Power distribution: Supplies DC power to four connected receivers.
  • Wideband frequency range: Operates across 470-960 MHz.
  • Expandable cascade ports: Connects up to five units in a two-tiered configuration.
  • Front-mounting antenna option: Allows antennas to be mounted on the front panel.

Already own this item and want to sell it?

Click here to sell your item

FAQs about Shure UA844SWB Antenna Distribution System

What is the primary function of the Shure UA844SWB?

The UA844SWB is a wideband UHF antenna and power distribution system that expands a wireless microphone system by splitting one pair of antennas to feed up to four wireless receivers. It also provides DC power distribution to connected receivers, reducing cable clutter and power strip usage in equipment racks.

What frequency range does the UA844SWB operate across?

The "SWB" (Super Wideband) version operates across an expanded frequency range of 470–952 MHz. This wide bandwidth allows it to support multiple wireless system bands globally across standard UHF television channels.

Which Shure wireless systems are compatible with this distributor?

It is compatible with Shure wireless receivers that use standard 50-ohm BNC antenna inputs, including the QLX-D, ULX, ULX-D, SLX, and BLX (BLX4R rackmount) series. It also supplies 15V DC power directly to compatible QLXD4, ULXD4, and SLX4 receivers.

Does the unit support active directional antennas and inline boosters?

Yes, the BNC antenna input ports supply 12V DC bias power to drive active directional antennas (such as the Shure UA874) or inline RF signal amplifiers (UA834) over long coaxial cable runs.

Can I cascade multiple UA844SWB units together for larger systems?

Yes, it features two antenna cascade ports (BNC) on the rear panel that allow you to connect a second UA844SWB unit or a fifth receiver without needing additional external splitters. This enables you to build larger rack systems supporting up to 8 or more channels on a single pair of main antennas.

What power output connections does the unit provide for receivers?

The rear panel features four 15V DC power output jacks. Using the included DC power jumper cables, you can power up to four individual wireless receivers directly from the UA844SWB's internal power supply.

What accessories and cables are included with the unit?

The system comes complete with an internal power supply, front-mount antenna hardware, rackmount brackets, five 2-foot BNC-to-BNC RF interconnect cables, two 6-foot BNC coaxial cables, and four DC power extension cables.

Is the Shure UA844SWB rack-mountable?

Yes, it features a standard 1 RU 19-inch metal rackmount chassis with integrated rack ears. It also includes front-panel BNC passthrough connectors so you can mount the stock 1/2-wave antennas directly on the front of your rack case.

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