The CMC180188AS from 3Rwave is a RF & Microwave Circulator with Frequency 1.805 to 1.88 GHz, Average Power Forward 100 W, Insertion Loss 0.35 to 0.4 dB, Isolation 21 to 24 dB, Return Loss 21 to 24 dB. Tags: Coaxial Circulator. More details for CMC180188AS can be seen below.