The CIH-01A-1720 from Stellant Systems is a RF & Microwave Circulator with Frequency 0.935 to 0.96 GHz, Average Power Forward 100 W, Average Power Reverse 1 W, Insertion Loss 0.8 dB, Isolation 40 dB. Tags: Module with Connector, Coaxial Circulator. More details for CIH-01A-1720 can be seen below.