The JIC0380T0430N5 from JQL Electronics is a RF & Microwave Isolator with Frequency 380 to 430 MHz, Average Power Forward 100 W, Average Power Reverse 50 W, Insertion Loss 0.3 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for JIC0380T0430N5 can be seen below.