The CC-1748-063 from RF & Noise Components is a RF & Microwave Circulator with Frequency 1.71 to 1.785 GHz, 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-1748-063 can be seen below.