The HMI28-599-28.0-3.0 from HXI is a Waveguide Isolator with Frequency 26.5 to 29.5 GHz, Insertion Loss 0.2 to 0.4 dB, Power fwd 5 W, Power rev 2 W, Isolation 22 to 25 dB. Tags: Faraday Isolator. More details for HMI28-599-28.0-3.0 can be seen below.