The FMCR1027 from Fairview Microwave is a RF & Microwave Circulator with Frequency 18 to 26.5 GHz, Average Power Forward 10 W, Average Power Reverse 10 W, Insertion Loss 1.7 dB, Isolation 12 dB. Tags: Coaxial Circulator. More details for FMCR1027 can be seen below.