The CI-850-406 from RF & Noise Components is a RF & Microwave Isolator with Frequency 800 to 900 MHz, Average Power Forward 250 W, Average Power Reverse 100 W, Insertion Loss 0.2 to 0.25 dB, Isolation 23 to 26 dB. Tags: Module with Connector, Coaxial Isolator. More details for CI-850-406 can be seen below.