The RMHY3.420Nf from Response Microwave Inc is a 90 Degree Hybrid Coupler with Frequency 210 to 420 MHz, Average Power 1000 W, Insertion Loss 0.3 dB, Isolation 15 dB, Coupling 3 dB. Tags: Module with Connectors. More details for RMHY3.420Nf can be seen below.