The DBHB9002000400B from Qotana is a 90 Degree Hybrid Coupler with Frequency 2 to 4 GHz, Average Power 50 W, Peak Power 0.5 kW, Insertion Loss 0.2 to 0.3 dB, Isolation 20 to 22 dB. Tags: Module with Connectors. More details for DBHB9002000400B can be seen below.