The VDDC-1818-5C from VidaRF is a RF & Microwave Circulator with Frequency 1.805 to 1.88 GHz, Average Power Forward 200 W, Average Power Reverse 200 W, Peak Power 500 W, Insertion Loss 0.5 to 0.6 dB. Tags: Drop-in Circulator. More details for VDDC-1818-5C can be seen below.