The HYB-5310-03-SMA-79 from Cinch Connectivity Solutions is a 90 Degree Hybrid Coupler with Frequency 500 to 1000 MHz, Average Power 50 W, Insertion Loss 0.20 dB, Isolation 25 dB, Coupling 3 dB. Tags: Module with Connectors. More details for HYB-5310-03-SMA-79 can be seen below.