The JIC0350T0500N10 from JQL Electronics is a RF & Microwave Isolator with Frequency 350 to 500 MHz, Average Power Forward 300 W, Average Power Reverse 100 W, Insertion Loss 0.7 dB, Isolation 16 dB. Tags: Module with Connector, Coaxial Isolator. More details for JIC0350T0500N10 can be seen below.