The CMB180188DS from 3Rwave is a RF & Microwave Circulator with Frequency 1805 to 1880 MHz, Average Power Forward 100 W, Insertion Loss 0.25 to 0.3 dB, Isolation 21 to 25 dB, Return Loss 21 to 25 dB. Tags: Surface Mount Circulator. More details for CMB180188DS can be seen below.