The RI1220CS-127149 from ZTS Technologies is a RF & Microwave Isolator with Frequency 12.7 to 14.9 GHz, Average Power Forward 20 W, Average Power Reverse 5 W, Insertion Loss 0.5 dB, Isolation 19 dB. Tags: Module with Connector, Coaxial Isolator. More details for RI1220CS-127149 can be seen below.