The IS-144 from MCLI is a RF & Microwave Isolator with Frequency 2.2 to 3 GHz, Average Power Forward 20 W, Insertion Loss 1 dB, Isolation 13 dB, Operating Temperature -10 to 70 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for IS-144 can be seen below.