The CC-805-285 from RF & Noise Components is a RF & Microwave Circulator with Frequency 750 to 860 MHz, Average Power Forward 600 W, Insertion Loss 0.15 to 0.2 dB, Isolation 23 to 26 dB, Return Loss 23 to 26 dB. Tags: Module with Connectors, Coaxial Circulator. More details for CC-805-285 can be seen below.