The CFA180199AA from 3Rwave is a RF & Microwave Circulator with Frequency 1.805 to 1.99 GHz, Average Power Forward 200 W, Insertion Loss 0.25 to 0.3 dB, Isolation 21 to 25 dB, Return Loss 21 to 25 dB. Tags: Drop-in Circulator. More details for CFA180199AA can be seen below.