The RFCR6301 from RF-CI is a RF & Microwave Circulator with Frequency 1 to 1.4 GHz, Average Power Forward 250 W, Average Power Reverse 250 W, Peak Power 2500 W, Insertion Loss 0.50 to 0.60 dB. Tags: Coaxial Circulator. More details for RFCR6301 can be seen below.