The HD-A89D43 from RD Microwaves is a 90 Degree Hybrid Coupler with Frequency 600 MHz to 2.7 GHz, Average Power 200 W, Insertion Loss 0.2 dB, Isolation 30 to 35 dB, Coupling 3 dB. Tags: Module with Connectors. More details for HD-A89D43 can be seen below.