The IS-28-15 from MCLI is a RF & Microwave Isolator with Frequency 10 to 14 GHz, Average Power Forward 25 W, Insertion Loss 0.6 dB, Isolation 17 dB, Operating Temperature -54 to 85 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for IS-28-15 can be seen below.