The ACC-20100 from Atlantic Microwave is a RF & Microwave Circulator with Frequency 2.7 to 3.2 GHz, Average Power Forward 20 W, Insertion Loss 0.4 dB, Isolation 20 dB, Operating Temperature -30 to 65 Degree C. Tags: Coaxial Circulator. More details for ACC-20100 can be seen below.