The IS-28 from MCLI is a RF & Microwave Isolator with Frequency 8.5 to 10.5 GHz, Average Power Forward 1 W, Peak Power Forward 0.1 kW, Insertion Loss 0.6 dB, Isolation 17 dB. Tags: Module with Connector, Coaxial Isolator. More details for IS-28 can be seen below.