Buy from Amazon : http://www.amazon.com/gp/product/B007XB3D30?tag=wayofcats-20 <br /> <br />Shure UA874US Active Directional UHF Antenna with Gain Switch (470-698 MHz) <br /> <br />Compatible with all Shure wireless receivers and antenna distribution systems that provide 12V DC bias <br />Four-position gain selector switch <br />Low-noise signal amplifier compensates for transmission loss in coaxial cable <br />Integrated threaded adapter mounts easily to microphones stands <br />Legendary Shure build quality and reliability
