The RFCR8922 from RF-CI is a RF & Microwave Circulator with Frequency 5.3 to 12.7 GHz, Average Power Forward 20 W, Average Power Reverse 30 W, Peak Power 250 W, Insertion Loss 0.7 to 0.8 dB. Tags: Drop-in Circulator. More details for RFCR8922 can be seen below.