The JCC12K0T15K0S1 from JQL Electronics is a RF & Microwave Circulator with Frequency 12 to 15 GHz, Average Power Forward 10 W, Insertion Loss 0.6 dB, Isolation 18 dB, Operating Temperature -40 to 75 Degree C. Tags: Coaxial Circulator. More details for JCC12K0T15K0S1 can be seen below.