The IS-8 from MCLI is a RF & Microwave Isolator with Frequency 1.9 to 3.6 GHz, Average Power Forward 50 W, Insertion Loss 0.9 dB, Isolation 15 dB, Operating Temperature 0 to 55 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for IS-8 can be seen below.