The 890-171217-501 from M2 Global Technology is a RF & Microwave Circulator with Frequency 1.71 to 2.17 GHz, Average Power Forward 150 W, Insertion Loss 0.4 dB, Operating Temperature 0 to 70 Degree C. Tags: Drop-in Circulator. More details for 890-171217-501 can be seen below.