The CC-515-022 from RF & Noise Components is a RF & Microwave Circulator with Frequency 470 to 560 MHz, Average Power Forward 250 W, Insertion Loss 0.4 to 0.5 dB, Isolation 20 to 21 dB, Return Loss 20 to 21 dB. Tags: Coaxial Circulator. More details for CC-515-022 can be seen below.