The DC-1050-152 from RF & Noise Components is a RF & Microwave Circulator with Frequency 1 to 1.1 GHz, Average Power Forward 250 W, Insertion Loss 0.2 to 0.25 dB, Isolation 23 to 26 dB, Return Loss 23 to 26 dB. Tags: Drop-in Circulator. More details for DC-1050-152 can be seen below.