The CMC280330AS from 3Rwave is a RF & Microwave Circulator with Frequency 2.8 to 3.3 GHz, Average Power Forward 30 W, Insertion Loss 0.35 to 0.4 dB, Isolation 18 to 21 dB, Return Loss 18 to 21 dB. Tags: Coaxial Circulator. More details for CMC280330AS can be seen below.