The IS-68 from MCLI is a RF & Microwave Isolator with Frequency 11.5 to 19 GHz, Average Power Forward 1 W, Peak Power Forward 0.1 kW, Insertion Loss 0.6 dB, Isolation 18 dB. Tags: Module with Connector, Coaxial Isolator. More details for IS-68 can be seen below.