The DH9-1-2G-1556 from COM-MW is a RF & Microwave Circulator with Frequency 1 to 2 GHz, Average Power Forward 50 W, Insertion Loss 1 dB, Isolation 14 dB, Operating Temperature -0 to 60 Degree C. Tags: Module With Connector, Coaxial Circulator. More details for DH9-1-2G-1556 can be seen below.