The RFCR6401 from RF-CI is a RF & Microwave Circulator with Frequency 1.35 to 1.85 GHz, Average Power Forward 200 W, Average Power Reverse 200 W, Peak Power 2000 w, Insertion Loss 0.50 to 0.60 dB. Tags: Coaxial Circulator. More details for RFCR6401 can be seen below.