The RQH-4.0-8.0-Nf-100W-w18 from Raditek is a 90 Degree Hybrid Coupler with Frequency 4 to 8 GHz, Average Power 100 W, Insertion Loss 0.3 dB, Isolation 18 dB, Coupling 3 dB. Tags: Module with Connectors. More details for RQH-4.0-8.0-Nf-100W-w18 can be seen below.