The IS-86 from MCLI is a RF & Microwave Isolator with Frequency 18.9 to 22.05 GHz, Average Power Forward 1 W, Insertion Loss 0.6 dB, Isolation 21 dB, Operating Temperature -54 to 85 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for IS-86 can be seen below.