The AT11B-080120J-AF from Aaren Technology Ltd is a RF & Microwave Circulator with Frequency 8 to 12 GHz, Average Power Forward 30 W, Insertion Loss 0.5 dB, Isolation 18 dB, Operating Temperature 0 to 60 Degree C. Tags: Coaxial Circulator. More details for AT11B-080120J-AF can be seen below.