The COIU8010420GH1- from Cernex Inc is a RF & Microwave Isolator with Frequency 800 MHz to 1.2 GHz, Bandwidth 200 MHz, Average Power Forward 100 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for COIU8010420GH1- can be seen below.