The IS-2 from MCLI is a RF & Microwave Isolator with Frequency 1 to 2.6 GHz, Average Power Forward 50 W, Insertion Loss 0.6 dB, Isolation 17 dB, Operating Temperature 0 to 55 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for IS-2 can be seen below.