The DC-465-179 from RF & Noise Components is a RF & Microwave Circulator with Frequency 460 to 470 MHz, Average Power Forward 250 W, Insertion Loss 0.3 to 0.35 dB, Isolation 23 to 25 dB, Return Loss 23 to 25 dB. Tags: Drop-in Circulator. More details for DC-465-179 can be seen below.