The IS-79 from MCLI is a RF & Microwave Isolator with Frequency 13.5 to 16.5 GHz, Average Power Forward 25 W, Peak Power Forward 0.25 kW, Insertion Loss 0.8 dB, Isolation 16 dB. Tags: Module with Connector, Coaxial Isolator. More details for IS-79 can be seen below.