The RFCR3109 from RF-CI is a RF & Microwave Circulator with Frequency 520 to 576 MHz, Average Power Forward 200 W, Average Power Reverse 200 W, Peak Power 1000 W, Insertion Loss 0.30 to 0.40 dB. Tags: Coaxial Circulator. More details for RFCR3109 can be seen below.