The D3C0118 from DiTom Microwave is a RF & Microwave Circulator with Frequency 1.6 to 1.8 GHz, Average Power Forward 150 W, Peak Power 750 W, Insertion Loss 0.3 to 0.4 dB, Isolation 20 to 23 dB. Tags: Coaxial Circulator. More details for D3C0118 can be seen below.