The CC-1150-390 from RF & Noise Components is a RF & Microwave Circulator with Frequency 1 to 1.3 GHz, 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-1150-390 can be seen below.