The RMHY3.500Nf from Response Microwave Inc is a 90 Degree Hybrid Coupler with Frequency 250 to 500 MHz, Insertion Loss 0.3 dB, Isolation 15 dB, Coupling 3 dB, VSWR 1.50:1. Tags: Module with Connectors. More details for RMHY3.500Nf can be seen below.