The JCC10K0T12K0S1 from JQL Electronics is a RF & Microwave Circulator with Frequency 10 to 12 GHz, Average Power Forward 10 W, Insertion Loss 0.5 dB, Isolation 20 dB, Operating Temperature -40 to 75 Degree C. Tags: Coaxial Circulator. More details for JCC10K0T12K0S1 can be seen below.