Andrew's hybrid couplers are most commonly used to combine two wireless carriers to a single antenna feed or cable. This requires the termination of one output port in 50 ohms, and results in a 3 dB loss in each signal. In situations where two similar feeds are required - for example in-building applications - both outputs may be used, eliminating the need for a termination and the 3 dB loss. The H-3-CPUSE-43-Ai6 has 4.3-10 female terminations. COMMSCOPE 555-2700 MHz low PIM hybrid coupler. 2x2. 200 watt. 26dB isolation. 0.2dB insertion loss. In/outdoor. 4.3-10 female term.