The MM-BHC-002004-90 from Mountain Microwave Technology is a 90 Degree Hybrid Coupler with Frequency 200 MHz to 4 GHz, Average Power 50 W, Insertion Loss 0.2 dB, Isolation 25 dB, Coupling 3 dB. Tags: Module with Connectors. More details for MM-BHC-002004-90 can be seen below.