The 994-039038-051 from M2 Global Technology is a RF & Microwave Circulator with Frequency 2.11 to 2.17 GHz, Average Power Forward 50 W, Insertion Loss 0.23 dB, Operating Temperature -40 to 100 Degree C. Tags: Drop-in Circulator. More details for 994-039038-051 can be seen below.