The IS-194 from MCLI is a RF & Microwave Isolator with Frequency 1.8 to 2 GHz, Average Power Forward 10 W, Insertion Loss 0.4 dB, Isolation 25 dB, Operating Temperature 10 to 40 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for IS-194 can be seen below.