The DC-837-117 from RF & Noise Components is a RF & Microwave Circulator with Frequency 824 to 849 MHz, Average Power Forward 250 W, Insertion Loss 0.25 to 0.3 dB, Isolation 23 to 26 dB, Return Loss 23 to 26 dB. Tags: Drop-in Circulator. More details for DC-837-117 can be seen below.