The RQH-400-500M-3d-N3-1W-k from Raditek is a 90 Degree Hybrid Coupler with Frequency 400 to 500 MHz, Average Power 1 W, Insertion Loss 0.5 dB, Isolation 20 dB, Coupling 3 dB. Tags: Module with Connectors. More details for RQH-400-500M-3d-N3-1W-k can be seen below.