The DBCL2008001200C from Qotana is a RF & Microwave Circulator with Frequency 8 to 12 GHz, Average Power Forward 20 W, Insertion Loss 0.30 to 0.40 dB, Isolation 20 to 21 dB, Operating Temperature -20 to 70 Degree C. Tags: Coaxial Circulator. More details for DBCL2008001200C can be seen below.