The JIC0800T1200S1 from JQL Electronics is a RF & Microwave Isolator with Frequency 800 MHz to 1.2 GHz, Average Power Forward 1 W, Average Power Reverse 1 W, Insertion Loss 0.5 dB, Isolation 18 dB. Tags: Module with Connector, Coaxial Isolator. More details for JIC0800T1200S1 can be seen below.