The IS-45 from MCLI is a RF & Microwave Isolator with Frequency 980 MHz to 2.05 GHz, Average Power Forward 1 W, Peak Power Forward 0.1 kW, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for IS-45 can be seen below.