The CMA180188AA from 3Rwave is a RF & Microwave Circulator with Frequency 1.805 to 1.88 GHz, Average Power Forward 120 W, Insertion Loss 0.22 to 0.28 dB, Isolation 22 to 27 dB, Return Loss 22 to 27 dB. Tags: Drop-in Circulator. More details for CMA180188AA can be seen below.