Shure UA874US Active Directional UHF Antenna - Black

The Shure UA874US is an active directional UHF antenna engineered to strengthen and stabilize wireless microphone reception in demanding audio environments. Its log-periodic directional design focuses pickup in a forward pattern, helping to reject unwanted interference from the sides and rear while pulling in clean signal from your transmitters. The built-in low-noise amplifier is the key feature here — it actively compensates for the signal degradation that naturally occurs over long coaxial cable runs, making it especially valuable in large venues, houses of worship, and broadcast setups where receivers may be located far from the stage.

Setup is straightforward thanks to the integrated threaded adapter, which screws onto any standard microphone stand for quick positioning. The four-position gain selector switch on the antenna body lets you dial in the right amount of amplification without over-driving the receiver, giving you precise control over signal strength. Because it draws its 12V DC power through the coaxial connection from compatible Shure receivers or antenna distribution units, there are no extra power cables to manage. For anyone running Shure wireless systems in environments where dropouts and interference are a concern, the UA874US provides a meaningful and measurable improvement in reception quality.