The RFCR2891 from RF-CI is a RF & Microwave Circulator with Frequency 2.62 to 2.69 GHz, Average Power Forward 50 W, Average Power Reverse 50 W, Peak Power 500 W, Insertion Loss 0.25 to 0.35 dB. Tags: Drop-in Circulator. More details for RFCR2891 can be seen below.