The CC-910-055 from RF & Noise Components is a RF & Microwave Circulator with Frequency 860 to 960 MHz, Average Power Forward 250 W, Insertion Loss 0.3 to 0.35 dB, Isolation 20 to 23 dB, Return Loss 20 to 23 dB. Tags: Coaxial Circulator. More details for CC-910-055 can be seen below.