The CMA211217AA from 3Rwave is a RF & Microwave Circulator with Frequency 2.11 to 2.17 GHz, Average Power Forward 100 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 CMA211217AA can be seen below.