The QC-2550 from Quantic PMI (Planar Monolithics) is a 90 Degree Hybrid Coupler with Frequency 2.5 to 5 GHz, Average Power 75 W, Insertion Loss 0.3 to 0.60 dB, Isolation 16 dB, Coupling 3 Db. Tags: Module with Connectors. More details for QC-2550 can be seen below.