The RFLI-403-2 from RF-Lambda is a RF & Microwave Isolator with Frequency 3.7 to 6.5 GHz, Average Power Forward 10 W, Average Power Reverse 2 W, Insertion Loss 0.3 dB, Isolation 23 dB. Tags: Module with Connector, Coaxial Isolator. More details for RFLI-403-2 can be seen below.