The CMB180188CS from 3Rwave is a RF & Microwave Circulator with Frequency 1.805 to 1.88 GHz, Average Power Forward 120 W, Insertion Loss 0.3 to 0.35 dB, Isolation 21 to 25 dB, Return Loss 21 to 25 dB. Tags: Surface Mount Circulator. More details for CMB180188CS can be seen below.