The 890-185199-301 from M2 Global Technology is a RF & Microwave Circulator with Frequency 1.85 to 1.99 GHz, Average Power Forward 70 W, Insertion Loss 0.45 dB, Operating Temperature -20 to 70 Degree C. Tags: Drop-in Circulator. More details for 890-185199-301 can be seen below.