The CC-750-384 from RF & Noise Components is a RF & Microwave Circulator with Frequency 700 to 800 MHz, Average Power Forward 250 W, Insertion Loss 0.4 to 0.5 dB, Isolation 20 to 23 dB, Return Loss 20 to 23 dB. Tags: Coaxial Circulator. More details for CC-750-384 can be seen below.