The RFC27W500G25 from RF-Lambda is a RF & Microwave Circulator with Frequency 2.1 to 2.9 GHz, Bandwidth 800 MHz, Average Power Forward 500 W, Average Power Reverse 500 W, Insertion Loss 0.5 dB. Tags: Coaxial Circulator. More details for RFC27W500G25 can be seen below.