Hybrid Couplers are used in advanced RF transmission systems for interaction-free signal combining. Blackhawk's 4x4 Hybrid Matrix is a highly effective repeater combiner, commonly used to distribute multiple 4G/5G services across multiple distribution feeder cables. With four input ports, up to four repeaters can be combined across four outputs with a -6 dB coupling loss. 4x4 Hybrid Couplers provide more effective division than Power Dividers.