The ACC-20190 from Atlantic Microwave is a RF & Microwave Circulator with Frequency 8 to 9.5 GHz, Average Power Forward 10 W, Insertion Loss 0.35 dB, Isolation 20 dB, Operating Temperature 10 to 60 Degree C. Tags: Coaxial Circulator. More details for ACC-20190 can be seen below.