The RFCR3815 from RF-CI is a RF & Microwave Circulator with Frequency 2.7 to 2.9 GHz, Average Power Forward 100 W, Average Power Reverse 100 W, Peak Power 1000 W, Insertion Loss 0.30 to 0.40 dB. Tags: Coaxial Circulator. More details for RFCR3815 can be seen below.