Active directional UHF antenna with integrated amplifier for improved wireless signal reception.
Compatible with all Shure wireless receivers and antenna distribution systems that provide 12V DC bias
Four-position gain selector switch
Low-noise signal amplifier compensates for transmission loss in coaxial cable
Integrated threaded adapter mounts easily to microphones stands
The UA874 replaces the UA870. UA874 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.
In this issue, we will focus on transmission lines, beginning with an explanation of coaxial cable impedance and why 50-ohms is the standard in RF systems, followed by a review of cable loss specifications.
All About Wireless: Antenna Types and Characteristics
In this part of our wireless series, we will focus on antennas, covering the design and performance characteristics of those most commonly utilized in the professional audio industry.
