The JCC0512T0698N20 from JQL Electronics is a RF & Microwave Circulator with Frequency 512 to 698 MHz, Average Power Forward 200 W, Insertion Loss 0.4 dB, Isolation 20 dB, Operating Temperature -30 to 60 Degree C. Tags: Coaxial Circulator. More details for JCC0512T0698N20 can be seen below.