The JCD13K4T15K0G2 from JQL Electronics is a RF & Microwave Circulator with Frequency 13.4 to 15 GHz, Average Power Forward 20 W, Insertion Loss 0.5 dB, Isolation 20 dB, Operating Temperature -40 to 85 Degree C. Tags: Drop-in Circulator. More details for JCD13K4T15K0G2 can be seen below.