The DBCL2002100290B from Qotana is a RF & Microwave Circulator with Frequency 2.1 to 2.9 GHz, Average Power Forward 100 W, Insertion Loss 0.25 to 0.35 dB, Isolation 20 to 21dB, Operating Temperature -20 to 70 Degree C. Tags: Coaxial Circulator. More details for DBCL2002100290B can be seen below.