The CC-850-386 from RF & Noise Components is a RF & Microwave Circulator with Frequency 800 to 900 MHz, Average Power Forward 250 W, Insertion Loss 0.2 to 0.25 dB, Isolation 23 to 26 dB, Return Loss 23 to 26 dB. Tags: Coaxial Circulator. More details for CC-850-386 can be seen below.