The Shure Model UA844+ is an antenna distribution system that allows for 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 UA844+ system can support up to five wireless receivers. A maximum of five UA844+ systems may be used in a two-tiered configuration.
UA844+ Model Variations
Note: Some units include a power switch on the front panel to meet regional regulations.
*Model UA844+/LC substitutes (2) 22 in. BNC cables.
**Not included with Model UA844+/LC
1/2 Wave Omnidirectional Receiver Antenna for improved wireless signal reception
In-Line RF Amplifier compensates for signal loss over extended cable runs
UA874 Active Directional Antenna for improved wireless signal reception with greater rejection of unwanted signals
1/2 Wave Antenna Remote Mount Kit
Antenna Rack Panel with Cables and BNC Adapters
Note: Be sure to select antennas and accessories that are compatible with the operating frequency range of your wireless system. Contact Shure or your local retailer for help with selecting the right wireless accessories.
Use 50 ohm low-loss coaxial cable, such as RG-8U. Shure offers pre-terminated antenna cables ranging from 6 to 100 feet.
NOTE: When ordering cables from Shure, select the low-loss "Z" models (available for longer cables) when using frequency bands above 1000 MHz.
14 to 18 V DC
14 to 18 V DC (x4)
Combined total from all DC outputs
2.5 A, maximum
-18°C (0°F) to 63°C (145°F)
45 x 483 x 172 mm (H x W x D)
1.62 kg (3.6 lbs)
174 to 1805 MHz
15 V DC (150 mA, maximum) (x2)
174 to 1805 MHz
21 dBm, typical
30 dB, typical
Input to any output port (Unused ports terminated in 50 Ω)
-1 to +1 dB
① Antenna A Connector
② Power Indicator
③ Power Switch(country dependent)
④ Antenna B Connector
⑤ 15 V dc (2.54 A) power input
⑥ Power Output for receivers. Do not connect to additional distribution systems
⑦ RF Input Antenna B
⑧ Cascade (2)
⑨ RF Output B
⑩ RF Output A
⑪ RF Input Antenna A
① Connect additional systems to the A/B ports of the top level UA844.
② Connect additional systems on the second level to the A and B antenna inputs.
③ Connect each receiver (RX) to the A/B output port pairs on the UA844.
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
75031 Eppingen, Germany
Phone: 49-7262-92 49 0
Fax: 49-7262-92 49 11 4
Licensing: A ministerial license to operate this equipment may be required in certain areas. Consult your national authority for possible requirements. Changes or modifications 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 application, 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.