The JCD1850T1910M10 from JQL Electronics is a RF & Microwave Circulator with Frequency 1.85 to 1.91 GHz, Average Power Forward 100 W, Insertion Loss 0.25 dB, Isolation 21 dB, Operating Temperature -35 to 85 Degree C. Tags: Drop-in Circulator. More details for JCD1850T1910M10 can be seen below.