The CC-905-388 from RF & Noise Components is a RF & Microwave Circulator with Frequency 850 to 960 MHz, Average Power Forward 250 W, Insertion Loss 0.35 to 0.4 dB, Isolation 20 to 23 dB, Return Loss 20 to 23 dB. Tags: Coaxial Circulator. More details for CC-905-388 can be seen below.