The CC-1843-398 from RF & Noise Components is a RF & Microwave Circulator with Frequency 1.805 to 1.88 GHz, Average Power Forward 250 W, Insertion Loss 0.2 to 0.35 dB, Isolation 20 to 23 dB, Return Loss 20 to 23 dB. Tags: Coaxial Circulator. More details for CC-1843-398 can be seen below.