The RFCR2904 from RF-CI is a RF & Microwave Circulator with Frequency 9.5 to 10.5 GHz, Average Power Forward 25 W, Average Power Reverse 25 W, Peak Power 250 W, Insertion Loss 0.35 to 0.4 dB. Tags: Drop-in Circulator. More details for RFCR2904 can be seen below.