The VDC-1819-6C from VidaRF is a RF & Microwave Circulator with Frequency 1.85 to 1.91 GHz, Average Power Forward 50 W, Average Power Reverse 50 W, Peak Power 100 W, Insertion Loss 0.2 to 0.25 dB. Tags: Drop-in Circulator. More details for VDC-1819-6C can be seen below.