The DH9-8-18G-1558 from COM-MW is a RF & Microwave Circulator with Frequency 8 to 18 GHz, Average Power Forward 10 W, Insertion Loss 0.8 dB, Isolation 14 dB, Operating Temperature -10 to 60 Degree C. Tags: Module With Connector, Coaxial Circulator. More details for DH9-8-18G-1558 can be seen below.