The DC-1088-429 from RF & Noise Components is a RF & Microwave Circulator with Frequency 960 MHz to 1.21 GHz, Average Power Forward 250 W, Insertion Loss 0.35 to 0.45 dB, Isolation 20 to 23 dB, Return Loss 20 to 23 dB. Tags: Drop-in Circulator. More details for DC-1088-429 can be seen below.