The IS-74 from MCLI is a RF & Microwave Isolator with Frequency 7.8 to 8.2 GHz, Average Power Forward 1 W, Insertion Loss 0.6 dB, Isolation 19 dB, Operating Temperature -50 to 85 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for IS-74 can be seen below.