The Shure UA874 is a UHF active directional antenna that delivers improved wireless reception.

It uses a log periodic dipole array to produce a cardioid pattern towards the desired coverage area with greater rejection of RF signals outside the coverage area when compared to standard ½ wave omnidirectional antennas.

An integrated amplifier with four gain settings compensate for varying degrees of coaxial cable signal loss.

The UA874 can be stand-mounted, suspended from the ceiling, or wall-mounted using the included swivel adapter bracket.

Key Features:

• Compatible with all Shure wireless receivers and antenna distribution systems that provide 12V DC bias
• Four-position gain selector switch includes active, passive and attenuated settings
• Onboard RF overload LED indicator
• Low-noise signal amplifier compensates for transmission loss in coaxial cable
• Integrated threaded adapter mounts easily to microphones stands
• Connector Type: BNC, Female
• Impedance: 50 ohms
• Power Requirements: 10 to 15 V DC bias from coaxial connection, 75 mA
• Reception Pattern: 70 degrees
• Antenna Gain (On Axis): 7.5 dBi
• Signal Gain +/- 1dB: Switchable - Active: +12 dB, +6 dB; Passive: 0 dB, -6 dB
• RF Overload LED Threshold: -5 dBm