The RI2528BS-1.7-1.89 from ZTS Technologies is a RF & Microwave Isolator with Frequency 1.7 to 1.89 GHz, Average Power Forward 100 W, Average Power Reverse 20 W, Insertion Loss 0.40 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for RI2528BS-1.7-1.89 can be seen below.