The D4C1112 from DiTom Microwave is a RF & Microwave Circulator with Frequency 10.7 to 11.7 GHz, Average Power Forward 10 W, Peak Power 30 W, Insertion Loss 0.2 dB, Isolation 23 dB. Tags: Coaxial Circulator. More details for D4C1112 can be seen below.