The CIRC3P-750003 from ETL Systems is a RF & Microwave Circulator with Frequency 5.1 to 5.85 GHz, Average Power Forward 60 W, Average Power Reverse 60 W, Insertion Loss 0.35 dB, Isolation 23 dB. Tags: Module with Connector, Coaxial Circulator. More details for CIRC3P-750003 can be seen below.