The RFCR2897D from RF-CI is a RF & Microwave Circulator with Frequency 3.1 to 3.3 GHz, Average Power Forward 50 W, Average Power Reverse 50 W, Peak Power 500 W, Insertion Loss 0.35 to 0.4 dB. Tags: Drop-in Circulator. More details for RFCR2897D can be seen below.