The DBHB9001000400A from Qotana is a 90 Degree Hybrid Coupler with Frequency 1 to 4 GHz, Average Power 50 W, Peak Power 0.5 kW, Insertion Loss 0.35 to 0.5 dB, Isolation 20 to 22 dB. Tags: Module with Connectors. More details for DBHB9001000400A can be seen below.