The IS-17-1 from MCLI is a RF & Microwave Isolator with Frequency 3.7 to 8.2 GHz, Insertion Loss 0.6 dB, Isolation 17 dB, Operating Temperature -30 to 70 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for IS-17-1 can be seen below.