The D3C7018 from DiTom Microwave is a RF & Microwave Circulator with Frequency 7 to 18 GHz, Average Power Forward 5 W, Peak Power 30 W, Insertion Loss 0.9 to 1 dB, Isolation 15 to 16 dB. Tags: Coaxial Circulator. More details for D3C7018 can be seen below.