The JCC3000T6000S2 from JQL Electronics is a RF & Microwave Circulator with Frequency 3 to 6 GHz, Average Power Forward 20 W, Insertion Loss 0.6 dB, Isolation 16 dB, Operating Temperature -30 to 70 Degree C. Tags: Coaxial Circulator. More details for JCC3000T6000S2 can be seen below.