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Shure UA845-SWB Five-Way Active Antenna Splitter and Power Distribution System for U4S, UR4S, U4D and UR4D Receivers, 470-952 MHz Frequency Range


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List Price: $942.00

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Shure UA845-SWB: Picture 1 regular $784.95

About Shure UA845-SWB

The Shure UA845-SWB is an amplified, UHF Antenna Distribution System that expands a wireless microphone system by splitting one pair of antennas to multiple Shure U4 or Shure UR4 wireless receivers. It also amplifies RF signals to compensate for insertion loss due to splitting signal power to multiple output connectors. Each UA845-SWB allows up to four receivers to use the same antennas. CASCADE connectors allow connections to a fifth receiver or a second UA845-SWB. There are also power connectors for powering Shure UHF and UHF-R Wireless systems.

Shure UA845-SWB Features

  • Expandability: The UA845-SWB UHF Antenna Distribution System is designed for large UHF or UHF-R wireless systems. Each unit allows up to four wireless receivers to use the same two antennas and the CASCADE ports allow connection to a fifth receiver or a second UA845-SWB
  • Compatibility: The UA845-SWB is compatible with all Shure UHF and UHF-R wireless microphone receivers operating within a compatible frequency range (see UHF Carrier Frequency Ranges in the Specifications section)
  • CASCADE Ports: Two 50 ohm, BNC-type antenna CASCADE ports allow an additional UA845-SWB unit or a fifth wireless receiver. A large wireless system can be run off of a single pair of antennas
  • Power OUTPUT and OUT Connectors: Up to five (5) U4 or UR4 receivers can be daisy-chained and powered from a single source via the Power OUTPUT connectors
  • Low Noise and Intermodulation Distortion: The UA845-SWB maintains clean signals with minimal distortion
  • Insertion Loss Compensation: Whenever a signal is split to multiple output ports, there is a loss in signal strength. The UA845-SWB amplifies signals to compensate, ensuring a strong signal to the receivers
  • Front-Mounted Antennas: The UA845-SWB comes with hardware to front-mount the antennas, if desired

Shure UA845-SWB Specifications

Distributed Output Level (Gain)
3.5 dB typical, 2.0 dB to 5.0 dB from antenna input (Output ports 1-4)
0.5 dB typical, -1.0 dB to 2.0 dB from antenna input (Cascade port)
Models UA845-US, UK, E, J and SWB:
3 dB typical, 0 dB to 3.5 dB from antenna input (Output ports 1-4)
1 dB typical, -1.6 dB to +1.8 dB from antenna input (Cascade port)
Output Connector Isolation
Greater than 25 dB
Third Order Intercept Point (3 OIP)
Typical 24 dBm
Input/Output AC Line Voltage
100 to 240 Vac, 50/60 Hz, unswitched
DC Output Voltage
12 Vdc, 4 connectors
50 ohm
Operating Temperature Range
-7deg. C (+20deg. F) to 49deg. C (+120deg. F)
Input/Output Antenna Connector Type
AC Power Consumption
15 W per unit typical
Dimensions (H x W x D)
44.5 x 482.6 x 295.3" / 1.75 x 19 x 11.6 cm
3.32 kg / 7.31 lbs
Mfr #
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