The RMHY3.1000-4000Nf from Response Microwave Inc is a 90 Degree Hybrid Coupler with Frequency 1000 to 4000 MHz, Insertion Loss 0.5 dB, Isolation 20 dB, Coupling 3 dB. Tags: Module with Connectors. More details for RMHY3.1000-4000Nf can be seen below.