The JIC4000T8000S1R from JQL Electronics is a RF & Microwave Isolator with Frequency 4 to 8 GHz, Average Power Forward 30 W, Average Power Reverse 10 W, Insertion Loss 0.6 dB, Isolation 18 dB. Tags: Module with Connector, Coaxial Isolator. More details for JIC4000T8000S1R can be seen below.