The CIH-01A-8290 from Stellant Systems is a RF & Microwave Circulator with Frequency 0.82 to 0.9 GHz, Average Power Forward 100 W, Average Power Reverse 10 W, Insertion Loss 0.8 dB, Isolation 40 dB. Tags: Module with Connector, Coaxial Circulator. More details for CIH-01A-8290 can be seen below.