The CC-1100-058 from RF & Noise Components is a RF & Microwave Circulator with Frequency 1 to 1.2 GHz, Average Power Forward 250 W, Insertion Loss 0.35 to 0.4 dB, Isolation 21 to 24 dB, Return Loss 21 to 24 dB. Tags: Coaxial Circulator. More details for CC-1100-058 can be seen below.