The JCC7700T8300S1 from JQL Electronics is a RF & Microwave Circulator with Frequency 7.7 to 8.3 GHz, Average Power Forward 10 W, Insertion Loss 0.35 dB, Isolation 20 dB, Operating Temperature -40 to 75 Degree C. Tags: Coaxial Circulator. More details for JCC7700T8300S1 can be seen below.