The RFCR2927 from RF-CI is a RF & Microwave Circulator with Frequency 9 to 11.5 GHz, Average Power Forward 25 W, Average Power Reverse 25 W, Peak Power 250 W, Insertion Loss 0.4 to 0.5 dB. Tags: Drop-in Circulator. More details for RFCR2927 can be seen below.