The UA864 antenna provides active directional RF coverage in an easy-to-install, low-profile enclosure that can be mounted on walls, ceilings, or metal surfaces with improved reception. The paintable, neutral white housing allows the antenna to blend into corporate or classroom settings. The 4-position selectable gain switch provides attenuation and boost settings to match the antenna to the environment. UHF variants provide wideband RF coverage.
The UA864 is a polarized antenna and must be oriented correctly to optimize reception for each transmitter type. The gain switch indicates the antenna's orientation. Position the antennas using the following guidelines:
Note: The antenna's inner construction may differ for each model variation.
Use the following guidelines when mounting antennas:
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The mounting plate installs directly to a wall, ceiling, or a standard junction box.
Junction box mounting: Align the mounting plate with the junction box so that at least two screws can be used.
Wall mounting: Use the mounting plate as a template to mark the location for the holes on the mounting surface. Drill the holes accordingly.
The output connector can be routed through ports 1 or 2 on the antenna. When connecting to an RF cable in the wall, run the cable through the opening in the mounting plate.
The cover can be detached and rotated in any direction for a matched appearance when using multiple antennas.
The cover of the antenna can be painted to match the installation environment. Use the following guidelines when painting the antenna cover:
Warning: Do not touch the internal components of the antenna when the cover is removed.
This antenna is compatible with any receivers, distribution systems, and splitters that operate within the antenna's frequency range. For receivers with multiple antenna ports, connect each antenna being used to a separate port.
Note: The antenna requires bias voltage from the receiver or distribution system to operate and for LED functionality. If these devices do not supply bias voltage, the Shure UABIAST inline power supply can be used.
Use the gain switch to optimize antenna performance for the RF characteristics of the room or location. Monitor the RF signal from the receiver to ensure optimal signal strength.
|RF Gain Setting (dB)||Use Scenario|
|Pad: −10, −20||Provides increased isolation from other RF sources when the desired wireless microphone signal strength is strong. If the RF OVERLOAD LED illuminates when using a higher gain setting, the pad should be used to attenuate the signal, but only after verifying that the transmitter is an appropriate distance from the antenna.|
|0 (Default)||Suitable for typical room installations and provides enough RF gain in most cases when cable runs are between 10 and 50 feet.|
|Boost: +10||Provides an extra 10 dB of RF gain to compensate for signal loss if using long cable runs (50 feet or more).|
Note: Bias power supplied by receiver antenna ports or an external power source is required for antenna to operate and for illuminating the LEDs.
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.
To maintain top performance for antenna cables:
10 to 15 V DC bias from coaxial connection, 75 mA
3 dB Beam Width at center frequency
On Axis, 0 dB Gain Setting at center frequency
±1 dB, Switchable
+10 dB0 dB−10 dB−20 dB
176 x 176 x 51 mm (H x W x D)
|UA864||487 g (17.2 oz.)|
|UA864Z||454 g (16 oz.)|
−7°C (20°F) to 49°C (120°F)
−29°C (-20°F) to 74°C (165°F)
This product meets the Essential Requirements of all relevant European directives and is eligible for CE marking.
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