The DBCL1702000400E from Qotana is a RF & Microwave Circulator with Frequency 2 to 4 GHz, Average Power Forward 100 W, Insertion Loss 0.45 to 0.50 dB, Isolation 18 to 18.5 dB, Operating Temperature -20 to 70 Degree C. Tags: Coaxial Circulator. More details for DBCL1702000400E can be seen below.