The CC-705-284 from RF & Noise Components is a RF & Microwave Circulator with Frequency 650 to 760 MHz, Average Power Forward 600 W, Insertion Loss 0.15 to 0.2 dB, Isolation 23 to 26 dB, Return Loss 23 to 26 dB. Tags: Module with Connectors, Coaxial Circulator. More details for CC-705-284 can be seen below.