The 990-101110-501 from M2 Global Technology is a RF & Microwave Circulator with Frequency 1.01 to 1.1 GHz, Average Power Forward 100 W, Insertion Loss 0.3 dB, Operating Temperature -40 to 85 Degree C. Tags: Drop-in Circulator. More details for 990-101110-501 can be seen below.