The CKB180188AA from 3Rwave is a RF & Microwave Circulator with Frequency 1.805 to 1.88 GHz, Average Power Forward 80 W, Insertion Loss 0.25 to 0.3 dB, Isolation 22 to 26 dB, Return Loss 22 to 26 dB. Tags: Surface Mount Circulator. More details for CKB180188AA can be seen below.