The JCD1030T1090G6 from JQL Electronics is a RF & Microwave Circulator with Frequency 1.03 to 1.09 GHz, Average Power Forward 60 W, Insertion Loss 0.4 dB, Isolation 20 dB, Operating Temperature -30 to 70 Degree C. Tags: Drop-in Circulator. More details for JCD1030T1090G6 can be seen below.