The HD-B05xxx from RD Microwaves is a 90 Degree Hybrid Coupler with Frequency 350 MHz to 2.7 GHz, Average Power 200 W, Isolation 29 dB, Coupling 3 dB, Frequency Sensitivity 0.4 to 0.6 dB. Tags: Module with Connectors. More details for HD-B05xxx can be seen below.