The DBCL2000400050A from Qotana is a RF & Microwave Circulator with Frequency 400 to 500 MHz, Average Power Forward 100 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 DBCL2000400050A can be seen below.