The JIC1300T1550S6R from JQL Electronics is a RF & Microwave Isolator with Frequency 1.3 to 1.55 GHz, Average Power Forward 80 W, Average Power Reverse 80 W, Peak Power Forward 1 kW, Insertion Loss 0.4 dB. Tags: Module with Connector, Coaxial Isolator. More details for JIC1300T1550S6R can be seen below.