Antenna system components for mobile and broadcast communication698-4000 MHz Slim Omni ceiling antennaBlack version of low profile antenna. Both sides of the antenna and cable are black.0-4000 MHz Attenuator 15 WSignal attenuator for test, measuring or tuning purposes698-3800 MHz BiDirectional antennaTwo ways radiating antenna e.g. for tunnels and corridors300W terminatorHigh power load with high performance. Wall and pole mounting.