The RFCR3306 from RF-CI is a RF & Microwave Circulator with Frequency 1.4 to 1.6 GHz, Average Power Forward 200 W, Average Power Reverse 200 W, Peak Power 1000 W, Insertion Loss 0.35 to 0.50 dB. Tags: Coaxial Circulator. More details for RFCR3306 can be seen below.