The RI1220CS-145165 from ZTS Technologies is a RF & Microwave Isolator with Frequency 14.5 to 16.5 GHz, Average Power Forward 20 W, Average Power Reverse 5 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for RI1220CS-145165 can be seen below.