The JIC0420T0450N10 from JQL Electronics is a RF & Microwave Isolator with Frequency 420 to 450 MHz, Average Power Forward 200 W, Average Power Reverse 100 W, Insertion Loss 0.25 dB, Isolation 25 dB. Tags: Module with Connector, Coaxial Isolator. More details for JIC0420T0450N10 can be seen below.