The RMHY3.1700-2300Nf from Response Microwave Inc is a 90 Degree Hybrid Coupler with Frequency 1.7 to 2.3 GHz, Insertion Loss 0.3 dB, Isolation 23 dB, Coupling 3 dB, Coupling Variation +/- 0.3 dB. Tags: Module with Connectors. More details for RMHY3.1700-2300Nf can be seen below.