The RFCR2909 from RF-CI is a RF & Microwave Circulator with Frequency 11 to 13.7 GHz, Average Power Forward 10 W, Average Power Reverse 25 W, Peak Power 250 W, Insertion Loss 0.45 to 0.5 dB. Tags: Drop-in Circulator. More details for RFCR2909 can be seen below.