The RFCR3817 from RF-CI is a RF & Microwave Circulator with Frequency 3 to 3.5 GHz, Average Power Forward 100 W, Average Power Reverse 100 W, Peak Power 1000 W, Insertion Loss 0.30 to 0.40 dB. Tags: Coaxial Circulator. More details for RFCR3817 can be seen below.