The RFCR2888 from RF-CI is a RF & Microwave Circulator with Frequency 8 to 10.5 GHz, Average Power Forward 35 W, Average Power Reverse 50 W, Peak Power 500 W, Insertion Loss 0.35 to 0.5 dB. Tags: Drop-in Circulator. More details for RFCR2888 can be seen below.