The VBCC-180220 from VidaRF is a RF & Microwave Circulator with Frequency 18 to 22 GHz, Average Power Forward 250 W, Average Power Reverse 25 W, Insertion Loss 0.6 dB, Isolation 19 dB. Tags: Coaxial Circulator. More details for VBCC-180220 can be seen below.