The RQH-400-800M-3d-SMA(f)-200W-L4 from Raditek is a 90 Degree Hybrid Coupler with Frequency 400 to 800 MHz, Average Power 200 W, Insertion Loss 0.3 dB, Isolation 22 dB, Coupling 3 dB. Tags: Module with Connectors. More details for RQH-400-800M-3d-SMA(f)-200W-L4 can be seen below.