The RFCR6403 from RF-CI is a RF & Microwave Circulator with Frequency 1.4 to 1.6 GHz, Average Power Forward 200 W, Average Power Reverse 200 W, Peak Power 2000 W, Insertion Loss 0.30 to 0.40 dB. Tags: Coaxial Circulator. More details for RFCR6403 can be seen below.