The LDC-2/4-90N-400W from Leader-MW is a 90 Degree Hybrid Coupler with Frequency 2 to 4 GHz, Average Power 400 W, Insertion Loss 0.5 dB, Isolation 18 dB, Coupling 3 dB. Tags: Module with Connectors. More details for LDC-2/4-90N-400W can be seen below.