The DCC180188I from DEEWAVE Electronics is a RF & Microwave Circulator with Frequency 1.805 to 1.88 GHz, Average Power Forward 150 W, Insertion Loss 0.6 dB, Isolation 50 dB, Operating Temperature -40 to 85 Degree C. Tags: Coaxial Circulator. More details for DCC180188I can be seen below.