The VDC-177197 from VidaRF is a RF & Microwave Circulator with Frequency 17.70 to 19.70 GHz, Average Power Forward 25 W, Peak Power 200 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Drop-in Circulator. More details for VDC-177197 can be seen below.