The LDC-0.4/4.5-90S from Leader-MW is a 90 Degree Hybrid Coupler with Frequency 400 MHz to 4.5 GHz, Average Power 30 W, Insertion Loss 1.5 dB, Isolation 20 dB, Coupling 3 dB. Tags: Module with Connectors. More details for LDC-0.4/4.5-90S can be seen below.