The VDDC-1819-5C from VidaRF is a RF & Microwave Circulator with Frequency 1.85 to 1.91 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-1819-5C can be seen below.