The CMB270310CS from 3Rwave is a RF & Microwave Circulator with Frequency 2.7 to 3.1 GHz, Average Power Forward 80 W, Insertion Loss 0.3 to 0.35 dB, Isolation 21 to 24 dB, Return Loss 21 to 24 dB. Tags: Surface Mount Circulator. More details for CMB270310CS can be seen below.