Sennheiser AC 3200-II 8-Channel Active Antenna CombinerThe AC 3200 is an active, high power 8: 1 antenna combiner for large multi channel wireless monitoring systems. The AC3200 II combines up to eight channels for transmission via one antenna, with a broadband design covering 500 870 MHz. It significantly reduces intermodulation of wireless monitoring transmitters while keeping backstage clutter to a minimum. Long distances can be covered reliably as the AC 3200 accepts up to 250 mW of input power.