The RFCR2907D from RF-CI is a RF & Microwave Circulator with Frequency 10.3 to 11.9 GHz, Average Power Forward 10 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 RFCR2907D can be seen below.