The DBCL1704000800B from Qotana is a RF & Microwave Circulator with Frequency 4 to 8 GHz, Average Power Forward 80 W, Average Power Reverse 80 W, Insertion Loss 0.45 to 0.50 dB, Isolation 19 to 19.5 dB. Tags: Coaxial Circulator. More details for DBCL1704000800B can be seen below.