The RFCR3309 from RF-CI is a RF & Microwave Circulator with Frequency 950 MHz to 1.25 GHz, Average Power Forward 200 W, Average Power Reverse 200 W, Peak Power 1000 W, Insertion Loss 0.60 to 0.70 dB. Tags: Coaxial Circulator. More details for RFCR3309 can be seen below.