The Audio-Technica AEW-DA660D is a UHF active unity-gain diversity antenna distribution system that provides two "1-in, 4-out" RF channels. This unit is designed to complement wireless systems operating in the Audio-Technica "D" Band (655.500 - 680.375MHz), as well as other wireless systems operating in the same frequency ranges. It connects a pair of antennas to as many as four diversity receivers and the cascade output is provided as a directional coupler. AC pass-through allows daisy-chain AC hookup and has defeatable antenna power. It has a metal receiver chassis with reinforced mounting ears and rear rack mount capability. The unit includes detachable IEC power cable, IEC pass-through cable, ten RF cables, front-mount antenna cables and connectors, and four DC power cables and mounts in a single 19" rack space.