The IS-1-1 from MCLI is a RF & Microwave Isolator with Frequency 1.12 to 2.24 GHz, Insertion Loss 0.7 dB, Isolation 16 dB, Operating Temperature -10 to 40 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for IS-1-1 can be seen below.