The JCD1930T1990G6 from JQL Electronics is a RF & Microwave Circulator with Frequency 1.93 to 1.99 GHz, Average Power Forward 60 W, Insertion Loss 0.3 dB, Isolation 25 dB, Operating Temperature -30 to 70 Degree C. Tags: Drop-in Circulator. More details for JCD1930T1990G6 can be seen below.