The VMDC-177197 from VidaRF is a RF & Microwave Circulator with Frequency 17.70 to 19.70 GHz, Average Power Forward 10 W, Average Power Reverse 10 W, Insertion Loss 0.7 dB, Isolation 18 dB. Tags: Drop-in Circulator. More details for VMDC-177197 can be seen below.