The U 491 CICW from Southern Microwave Inc is a RF & Microwave Isolator with Frequency 470 to 512 MHz, Average Power Forward 300 W, Average Power Reverse 20 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for U 491 CICW can be seen below.