The CC-410-012 from RF & Noise Components is a RF & Microwave Circulator with Frequency 390 to 430 MHz, 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-410-012 can be seen below.