The RFCR2918D from RF-CI is a RF & Microwave Circulator with Frequency 5.8 to 7.1 GHz, Average Power Forward 35 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 RFCR2918D can be seen below.