The D4C6012 from DiTom Microwave is a RF & Microwave Circulator with Frequency 6.0 to 12.4 GHz, Average Power Forward 10 W, Peak Power 20 W, Insertion Loss 0.6 dB, Isolation 20 dB. Tags: Coaxial Circulator. More details for D4C6012 can be seen below.