Sennheiser AC3000 8x1 Broadband Antenna Combiner
The AC 3000 is an active antenna combiner for wireless monitoring applications with up to 8 transmitters connected to one common transmitter antenna. Due to its broadband design the AC 3000 can be used in the whole UHF range from 470 - 870 MHz. It significantly reduces intermodulation of wireless monitoring transmitters while keeping cabling limited to the minimum.