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General
The Shure Model UA844SWB is a UHF antenna distribution system that allows
the expansion of wireless microphone systems by splitting one pair of antennas to
multiple receivers. It also amplifies RF signals to compensate for insertion loss that
results from splitting signal power to multiple outputs. A single UA844SWB system
can support up to four wireless receivers. A maximum of five UA844SWB systems
may be used in a two-tiered configuration.
Model Variations
UA844SWB: Includes all components
UA844SWB/LC: Includes all components, excluding antenna cables and locking
power cables
Note: A power switch on the front panel is included on some units, depending on country-specific
regulations.
System Components
• Front-mounting antenna hardware
• Rack-mounting hardware
• External power supply
• Antenna cables and hardware for receiver connections (not included in
UA844SWB/LC)
• Locking and non-locking DC power cables for receiver connections (locking
cables not included in UA844SWB/LC)
Optional Accessories
Line Amplifier (470-900 MHz) UA830WB
Line Amplifier (470-698 MHz) UA830USTV
Line Amplifier (944-952 MHz) UA830X
Powered Directional Antenna (470-900 MHz) UA870WB
Powered Directional Antenna (470-698 MHz) UA870USTV
Powered Directional Antenna (944-952 MHz) UA870X
Powered Directional Antenna (470-698 MHz) UA874US
Powered Directional Antenna (470-790 MHz) UA874E
Powered Directional Antenna (470-900 MHz) UA874WB
Powered Directional Antenna (925-952 MHz) UA874X
1/2 Wave Antenna (774-862 MHz) UA820A
1/2 Wave Antenna (690-746 MHz) UA820B
1/2 Wave Antenna (554-590 MHz) UA820D
1/2 Wave Antenna (470-530 MHz) UA820G
1/2 Wave Antenna (518-578 MHz) UA820H4
1/2 Wave Antenna (944-952 MHz) UA820X
2 ft. BNC-BNC Cable UA802
6 ft. BNC-BNC Cable UA806
25 ft. BNC-BNC Cable UA825
50 ft. BNC-BNC Cable UA850
100 ft. BNC-BNC Cable UA8100
Bulkhead Adapters 95A8994
Power Cables for ULX Receivers 95B8420
Power Cables for SLX Receivers 95B8373
Replacement Parts
Hardware Kit 90XN1371
Power Supply PS45US
Power Supply PS45E
Power Supply PS45UK
Important Product Information
LICENSING INFORMATION
Licensing: A ministerial license to operate this equipment may be required in certain
areas. Consult your national authority for possible requirements. Changes or modi-
fications not expressly approved by Shure Incorporated could void your authority to
operate the equipment. Licensing of Shure wireless microphone equipment is the
user’s responsibility, and licensability depends on the user’s classification and ap-
plication, and on the selected frequency. Shure strongly urges the user to contact the
appropriate telecommunications authority concerning proper licensing, and before
choosing and ordering frequencies.
NOTE: This Radio equipment is intended for use in musical professional entertainment and
similar applications. This Radio apparatus may be capable of operating on some frequencies not
authorized in your region. Please contact your national authority to obtain information on authorized
frequencies and RF power levels for wireless microphone products.
The CE Declaration of Conformity can be obtained from Shure Incorporated or any of
its European representatives. For contact information please visit www.shure.com
The CE Declaration of Conformity can be obtained from: www.shure.com/europe/
compliance
Authorized European representative:
Shure Europe GmbH
Headquarters Europe, Middle East & Africa
Department: EMEA Approval
Jakob-Dieffenbacher-Str. 12
75031 Eppingen, Germany
Phone: 49-7262-92 49 0
Fax: 49-7262-92 49 11 4
Email: EMEAsupport@shure.de
Specifications
Power Requirements
14 to 18V DC
DC Output
14 to 18V DC (x4)
Output Current
Combined total from all DC outputs
2.5 A, maximum
Operating Temperature Range
−7°C (20°F) to 49°C (120°F)
Dimensions
45 x 483 x 172 mm (H x W x D)
Net Weight
1.62 kg(3.6 lbs)
RF Input
Connector Type
BNC
RF Frequency Range
470 to 952 MHz
Bias Voltage
12V DC (150 mA max.) (x2)
Impedance
50 Ω
RF Output
RF Frequency Range
470 to 952 MHz
Output Intercept Point (OIP3)
21 dBm, typical
Connector Type
BNC
Impedance
50 Ω
Output Connector Isolation
30 dB, typical
Gain
Input to any output port (Unused ports
terminated in 50 Ω)
−0.5 to 3.0 dB